CN105126533A - Method, apparatus and system for controlling natural gas adsorption column, and purification system - Google Patents
Method, apparatus and system for controlling natural gas adsorption column, and purification system Download PDFInfo
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- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 384
- 238000001179 sorption measurement Methods 0.000 title claims abstract description 383
- 239000003345 natural gas Substances 0.000 title claims abstract description 192
- 238000000034 method Methods 0.000 title claims abstract description 93
- 238000000746 purification Methods 0.000 title claims abstract description 26
- 239000012535 impurity Substances 0.000 claims abstract description 197
- 230000008929 regeneration Effects 0.000 claims abstract description 102
- 238000011069 regeneration method Methods 0.000 claims abstract description 102
- 238000007664 blowing Methods 0.000 claims abstract description 69
- 239000003463 adsorbent Substances 0.000 claims abstract description 49
- 238000001514 detection method Methods 0.000 claims description 28
- 239000002994 raw material Substances 0.000 abstract description 18
- 238000010521 absorption reaction Methods 0.000 abstract description 6
- 230000008569 process Effects 0.000 description 52
- 239000007789 gas Substances 0.000 description 40
- 239000002253 acid Substances 0.000 description 13
- 238000003795 desorption Methods 0.000 description 11
- 238000012544 monitoring process Methods 0.000 description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- 238000010586 diagram Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 5
- 238000005265 energy consumption Methods 0.000 description 5
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 5
- 229910052753 mercury Inorganic materials 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000013064 chemical raw material Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000003949 liquefied natural gas Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- -1 natural gas form hydrates Chemical class 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
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Abstract
The invention provides a method, an apparatus and a system for controlling a natural gas adsorption column, and a purification system, wherein the method for controlling the natural gas adsorption column includes following steps: (1) sending a signal controlling a valve at an absorption section of the adsorption column to be opened; (2) obtaining the flow rate and the impurity content of natural gas in an inlet pipeline of the absorption section, and determining a preset adsorption time according to the flow rate and the impurity content of the natural gas, and sending a control signal controlling the valve at the absorption section to be closed and the valve at the regeneration section to be opened when the actual adsorption time reaches the preset adsorption time; and (3) obtaining the impurity content of natural gas in an outlet pipeline of the regeneration section in real time, and sending a control signal controlling the valve at the regeneration section to be closed and a valve at a cold-blowing section to be opened when the impurity content reaches a preset impurity content value. In the embodiment, the method selects different adsorption time on the basis of different impurity content and flow rate of the raw material natural gas, so that the impurities in the raw material natural gas can be adsorbed better, thereby increasing the efficiency and service life of an adsorbent and saving energy.
Description
Technical Field
The invention relates to the technical field of natural gas purification, in particular to a natural gas adsorption tower control method, a natural gas adsorption tower control device, a natural gas adsorption tower control system and a natural gas purification system.
Background
The natural gas is a clean energy and chemical raw material, a natural gas long-distance pipeline in China conveys the natural gas to each natural gas valve station in a high-pressure gas conveying mode, and the natural gas is conveyed into a downstream pipe network after being subjected to pressure reduction treatment or is liquefied into liquefied natural gas for users to use.
Generally, a raw gas from a natural gas station contains impurities such as water, mercury, and acid gas, and each impurity has a serious influence on a system for depressurizing natural gas. For example, the water content in the natural gas and the natural gas form hydrates under certain conditions to block pipelines, which affects the cooling liquefaction process; acid gas in natural gas can form acid in free water, thus eroding pipelines and equipment; the corrosion of aluminum equipment and pipelines by mercury is severe; in addition, unnecessary power consumption is caused due to the existence of moisture; because of the low natural gas liquefaction temperature, the presence of water and acid gases can also lead to freeze-plugging of the equipment and must be removed.
In order to solve the problem, the common mode at present is to purify the raw material gas of each natural gas valve station by a purification system before the natural gas is depressurized. At present, a plurality of purification units are generally arranged in a purification system, each purification unit is internally provided with a plurality of adsorption towers, each adsorption tower is filled with an adsorbent to selectively remove impurities such as acid gas, mercury, water and the like in raw natural gas, and the plurality of towers can simultaneously carry out adsorption and regeneration (desorption) cycle operation. Common adsorption methods are TSA (temperature swing adsorption) and PSA (pressure swing adsorption). The TSA adsorption mode is that natural gas entering from the bottom of a tower adsorbs impurities such as acid gas, water and the like in the gas under the action of an adsorbent in the tower, and after adsorption is finished, high-temperature desorption gas is used for regeneration, namely the adsorbent is used for adsorbing the impurities such as water, acid gas and the like at normal temperature or low temperature, and then the adsorbent is subjected to desorption regeneration at high temperature to form a regeneration cycle of the adsorbent, so that the purposes of continuous separation and gas purification are achieved. The PSA adsorption mode is that natural gas entering from the bottom of the tower adsorbs impurities such as acid gas, water and the like in the gas under the action of an adsorbent in the tower, and after adsorption is finished, low-pressure regeneration gas is used for regeneration, namely the adsorbent is used for adsorbing the impurities such as water, acid gas and the like in the natural gas under higher pressure, and then desorption regeneration is carried out under low pressure, so that adsorption and regeneration circulation of the adsorbent is formed, and the purposes of continuous separation and purification of gas are achieved.
Generally speaking, the TSA includes three sections of adsorption, regeneration and cold blowing, and a plurality of valves are arranged on the adsorption tower, and the intake of the adsorption, regeneration and cold blowing processes is realized by switching of each valve, specifically: opening a valve corresponding to an adsorption process, allowing high-pressure natural gas to enter an adsorption tower, adsorbing impurities such as acid gas in the gas under the action of an adsorbent in the tower, closing the valve corresponding to the adsorption process after adsorption is completed, opening the valve corresponding to a regeneration process, inputting high-temperature gas, regenerating the adsorbent by using high-temperature desorption gas, closing the valve corresponding to the regeneration process after regeneration is completed, opening the valve corresponding to a cold blowing process, conveying cold blowing gas into the adsorption tower, and cooling the adsorption tower.
PSA is provided with a plurality of valves including two workshop sections of absorption and regeneration on the adsorption tower, realizes adsorbing the admit air of with regeneration process through the switching of each valve, specifically is: opening a valve corresponding to the adsorption process, allowing high-pressure natural gas to enter an adsorption tower, adsorbing impurities such as acid gas in the gas under the action of an adsorbent in the tower, closing the valve corresponding to the adsorption process after adsorption is completed, opening a valve corresponding to a regeneration process, allowing low-pressure natural gas from a liquefaction process to pass through the adsorbent as regenerated gas, desorbing the impurities in the adsorbent through pressure change, and conveying the desorbed regenerated gas to a natural gas pipe network to input the low-pressure gas.
In general, the adsorption time T for the purification process by the TSA adsorption method and the PSA adsorption method1And a regeneration time T2To control the switching of each valve, thereby changing the process state of the adsorption tower, and in order to improve the use efficiency of the adsorbent and reduce the energy consumption, the adsorption time T must be prolonged1Shortening the desorption time T2However, simple time adjustments may result in reduced adsorption or incomplete desorption. At present, the adsorption and desorption time is usually determined according to the mechanism analysis and engineering practice of the adsorption and regeneration process, but flexible adjustment of the time cannot be carried out according to the specific situation of different raw material gases, which not only reduces the service life and efficiency of the adsorbent, but also can cause increase of energy consumption.
Disclosure of Invention
In view of this, the invention provides a natural gas adsorption tower control method, and aims to solve the problem that the existing control method cannot flexibly adjust the time of each process. The invention also provides a natural gas adsorption tower control device, a natural gas adsorption tower control system and a natural gas adsorption tower purification system.
In one aspect, the present invention provides a method for controlling a natural gas adsorption tower, comprising the steps of: the first step, sending out a control signal for controlling the opening of a valve at an adsorption section of the adsorption tower; acquiring the flow and impurity content of natural gas in an inlet pipeline of the adsorption working section, determining preset adsorption time according to the flow and impurity content of the natural gas, and sending control signals for controlling the valve of the adsorption working section to be closed and the valve of the regeneration working section to be opened when the actual adsorption time reaches the preset adsorption time; and a second step of acquiring the impurity content of the natural gas in an outlet pipeline of a regeneration section of the adsorption tower in real time, and sending out control signals for controlling the valve of the regeneration section to be closed and the valve of the cold blowing section to be opened when the impurity content reaches an impurity preset value.
Further, in the above method for controlling a natural gas adsorption tower, the second step further includes: sending out a control signal for opening a valve of the cold blowing section; the method further comprises the following steps: and a third step of acquiring the temperature of the natural gas in an outlet pipeline of the cold blowing section of the adsorption tower in real time, and sending a control signal for controlling the closing of a valve of the cold blowing section when the temperature reaches a preset temperature.
Further, in the above method for controlling a natural gas adsorption tower, in the first step, determining the preset adsorption time according to the flow rate and the impurity content of the inlet pipeline further includes: according to the formulaRespectively determining the adsorption time required by each impurity adsorbed by the adsorption tower, wherein T is the adsorption time required by the impurity; q is the full load adsorbent adsorption capacity of the adsorption tower; s0Is the content of the impurity in the natural gas in the inlet pipeline of the adsorption section; s' is the index content of the natural gas at the outlet of the adsorption section for controlling the impurities; f is the flow in the inlet pipeline of the adsorption working section; and taking the determined minimum adsorption time as a preset adsorption time.
According to the method, the adsorption time can be determined according to the flow and the impurity content of the natural gas in the inlet pipeline of the adsorption working section, when the impurity content is high and/or the flow is large, the adsorption time is prolonged, and when the impurity content is low and/or the flow is small, the adsorption time is shortened, so that compared with the prior art, the method has the advantages that different adsorption times are adopted for the raw material natural gas with different impurity contents and flows, impurities in the raw material natural gas can be well adsorbed, the efficiency and the service life of the adsorbent are improved, and the energy consumption is saved; in addition, the embodiment also monitors the impurity content of the natural gas in the outlet pipeline of the regeneration section in real time to determine whether the regeneration process is finished, so that the adsorbent can be fully desorbed.
In another aspect, the present invention further provides a natural gas adsorption tower control device, including: the first module is used for sending a control signal for controlling the opening of a valve of an adsorption section of the adsorption tower, acquiring the flow and the impurity content of natural gas in an inlet pipeline of the adsorption section, determining preset adsorption time according to the flow and the impurity content of the natural gas in the inlet pipeline, and sending a control signal for controlling the closing of the valve of the adsorption section and the opening of the valve of a regeneration section when the actual adsorption time reaches the preset adsorption time; and the second module is used for acquiring the impurity content of the natural gas in an outlet pipeline of the regeneration section of the adsorption tower in real time and sending a control signal for controlling the valve of the regeneration section to be closed when the impurity content reaches an impurity preset value.
Further, in the above natural gas adsorption tower control device, the second module is further configured to send a control signal for controlling the valve of the cold blowing section to be opened, and the device further includes: and the third module is used for acquiring the temperature of the natural gas in the outlet pipeline of the cold blowing section of the adsorption tower in real time and sending a control signal for controlling the closing of a valve of the cold blowing section when the temperature reaches a preset temperature.
Further, in the above natural gas adsorption tower control apparatus, the first module includes: a first calculation unit for calculatingRespectively determining the adsorption time required by each impurity adsorbed by the adsorption tower, wherein T is the adsorption time required by the impurity; q is the full load adsorbent adsorption capacity of the adsorption tower; s0Is the content of the impurity in the natural gas in the inlet pipeline of the adsorption section; s' is adsorptionControlling the index content of the impurities by the natural gas at the outlet of the working section; f is the flow in the inlet pipeline of the adsorption working section; and taking the determined minimum adsorption time as a preset adsorption time.
In another aspect, the present invention further provides a natural gas adsorption tower control system, including: the first impurity detection unit is used for detecting the impurity content of the natural gas in an inlet pipeline of an adsorption section of the adsorption tower; the flowmeter is used for detecting the flow of the natural gas in an inlet pipeline of an adsorption section of the adsorption tower; and the controller is connected with the first impurity detection unit and the flowmeter and is used for receiving the impurity content and the flow of the natural gas in the inlet pipeline of the adsorption working section, determining preset adsorption time according to the impurity content and the flow of the inlet pipeline, and sending out control signals for controlling the valve of the adsorption working section to be closed and the valve of the regeneration working section to be opened when the actual adsorption time reaches the preset adsorption time.
Further, the above natural gas adsorption tower control system further comprises: the second impurity detection unit is used for detecting the impurity content of the natural gas in an outlet pipeline of a regeneration working section of the adsorption tower in real time; the controller is connected with the second impurity detection unit and used for receiving the impurity content and sending out control signals for controlling the regeneration section valve to be closed and the cold blowing section valve to be opened when the impurity content reaches an impurity preset value.
Further, the above natural gas adsorption tower control system further comprises: the temperature detection unit is used for detecting the temperature of the natural gas in the outlet pipeline of the cold blowing section of the adsorption tower in real time; the controller is connected with the temperature detection unit and used for receiving the temperature and sending out a control signal for controlling the closing of the cold blowing section valve when the temperature reaches a preset temperature.
The control device and the control system for the natural gas adsorption tower have the same technical effects as the control method.
In yet another aspect, the present invention further provides a purification system comprising at least one adsorption unit and any one of the above natural gas adsorption tower control systems; wherein each of the purification units comprises at least one adsorption column.
Because the natural gas adsorption tower control system has the effects, the purification system with the natural gas adsorption tower control system also has corresponding technical effects.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
FIG. 1 is a flow chart of a method for controlling a natural gas adsorption tower according to an embodiment of the present invention;
FIG. 2 is another flow chart of a method for controlling a natural gas adsorption tower according to an embodiment of the present invention;
fig. 3 is a block diagram of a control device of a natural gas adsorption tower according to an embodiment of the present invention;
fig. 4 is another block diagram of a natural gas adsorption tower control device according to an embodiment of the present invention;
fig. 5 is a block diagram of a first module in a natural gas adsorption tower control device according to an embodiment of the present invention;
FIG. 6 is a schematic structural diagram of a natural gas adsorption tower control system provided by an embodiment of the present invention;
FIG. 7 is a schematic diagram of another configuration of a natural gas adsorption tower control system provided by an embodiment of the present invention;
FIG. 8 is a schematic diagram of another configuration of a natural gas adsorption tower control system provided by an embodiment of the present invention;
fig. 9 is a schematic structural diagram of a natural gas adsorption tower control system according to an embodiment of the present invention.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
The embodiment of the control method comprises the following steps:
referring to fig. 1, fig. 1 is a flow chart of a method for controlling a natural gas adsorption tower according to an embodiment of the present invention. As shown, the method comprises the following steps:
step S1, sending out a control signal for controlling the opening of a valve at an adsorption section of the adsorption tower; the method comprises the steps of obtaining the flow rate and the impurity content of natural gas in an inlet pipeline of an adsorption working section, determining preset adsorption time according to the flow rate and the impurity content of the natural gas in the inlet pipeline, and sending out control signals for controlling the valve of the adsorption working section to be closed and the valve of a regeneration working section to be opened when the actual adsorption time reaches the preset adsorption time.
Referring to fig. 7, it will be understood by those skilled in the art that for the TSA adsorption mode, corresponding to the adsorption section, the regeneration section, and the cold-blowing section, the adsorption tower is generally provided with an adsorption section inlet pipeline a1, an adsorption section outlet pipeline a2, a regeneration section inlet pipeline A3, a regeneration section outlet pipeline a4, a cold-blowing section inlet pipeline a5, and a cold-blowing section outlet pipeline a 6. The raw material natural gas at the adsorption section enters the adsorption tower through an inlet pipeline A1 at the adsorption section, and flows out of the adsorption tower through an outlet pipeline A2 at the adsorption section after being adsorbed in the adsorption tower; the regeneration gas enters the adsorption tower through a regeneration section inlet pipeline A3, and the adsorbent is desorbed and then flows out of the adsorption tower through a regeneration section outlet pipeline A4; cold blowing air flows into the adsorption tower through a cold blowing section inlet pipeline A5, and the adsorbent is heated and then flows out of the adsorption tower through a cold blowing section outlet pipeline A6. In order to control the gas entering each section, the adsorption section inlet pipeline a1, the adsorption section outlet pipeline a2, the regeneration section inlet pipeline A3, the regeneration stage outlet pipeline a4, the cold blowing stage inlet pipeline a5 and the cold blowing stage outlet pipeline a6 are respectively provided with a first valve 11, a second valve 12, a third valve 21, a fourth valve 22, a fifth valve 31 and a sixth valve 32. Referring again to fig. 6, for the PSA adsorption mode, since the cold blowing section is not provided, compared to the TSA adsorption mode, the cold blowing section inlet pipeline a5 and the cold blowing section outlet pipeline a6, and the corresponding fifth valve 31 and sixth valve 32 are not provided, and the rest is the same as the TSA adsorption mode.
Specifically, in this embodiment, a control signal for opening the first valve 11 and the second valve 12 is first sent out, so that the raw natural gas enters the adsorption tower through the adsorption section inlet pipeline a1, and then the flow rate and the impurity content of the natural gas in the adsorption section inlet pipeline a1 can be obtained through a flow meter and an impurity detection unit provided on the adsorption section inlet pipeline a 1. It should be noted that, in this embodiment, the impurities in the natural gas may include H2O、CO2、C5+Acid gas (e.g. H)2S, etc.), mercury, etc., and may be other impurities known to those skilled in the art, and the specific content of the impurities is not limited in this embodiment.
In this embodiment, the adsorption process is controlled by the adsorption time. Specifically, the preset adsorption time is determined according to the flow rate and the impurity content of the natural gas in the inlet pipeline A1 of the adsorption section, when the impurity content is high and/or the flow rate is large, the adsorption time is prolonged, and when the impurity content is low and/or the flow rate is small, the adsorption time is shortened; when the actual adsorption time reaches the preset adsorption time, control signals for controlling the closing of the valves of the adsorption section and the opening of the valves of the regeneration section are sent out, namely the first valve 11 and the second valve 12 are closed, the third valve 21 and the fourth valve 22 are opened, so that the adsorption tower enters the regeneration process.
And step S2, acquiring the impurity content of the natural gas in the outlet pipeline of the regeneration section of the adsorption tower in real time, and sending a control signal for controlling the valve of the regeneration section to be closed when the impurity content reaches the preset impurity value.
Specifically, the content of impurities in the outlet pipeline of the regeneration section can be continuously reduced along with the progress of the regeneration process through the content of impurities in the natural gas arranged in the outlet pipeline a2 of the regeneration section, and when the content of impurities is equal to the preset value of the impurities, a control signal for controlling the valve of the regeneration section to be closed is sent, namely, the third valve 21 and the fourth valve 22 are closed.
In this embodiment, can confirm adsorption time according to the flow and the impurity content of the natural gas in the inlet pipeline of adsorption workshop section, when impurity content is high and/or flow is big, prolong adsorption time, when impurity content is low and/or flow is little, shorten adsorption time, can see out, compared with the prior art, this embodiment adopts different adsorption time to the raw materials natural gas of different impurity content and flow, and then carry out abundant absorption to the impurity in the raw materials natural gas better, improve the efficiency and the life of adsorbent, practice thrift the energy consumption. According to the embodiment, whether the regeneration process is finished or not is determined by monitoring the impurity content of the natural gas in the outlet pipeline of the regeneration section in real time, so that the adsorbent can be fully desorbed.
Referring to fig. 2, fig. 2 is another flow chart of a natural gas adsorption tower control method according to an embodiment of the present invention. As shown, the method comprises the following steps:
step S1, sending out a control signal for controlling the opening of a valve at an adsorption section of the adsorption tower; the method comprises the steps of obtaining the flow and the impurity content of natural gas in an inlet pipeline of an adsorption working section, determining preset adsorption time according to the flow and the impurity content of natural gas in the inlet pipeline, and sending out control signals for controlling the valve of the adsorption working section to be closed and the valve of a regeneration working section to be opened when the actual adsorption time reaches the preset adsorption time.
And step S2, acquiring the impurity content of the natural gas in the outlet pipeline of the regeneration section of the adsorption tower in real time, and sending out control signals for controlling the valve of the regeneration section to be closed and the valve of the cold blowing section to be opened when the impurity content reaches the preset impurity value. The specific implementation of steps S1 and S2 is substantially the same as that of the above embodiment, except that after the third valve 21 and the fourth valve 22 are closed, the regeneration process is ended, and control signals for opening the fifth valve 31 and the sixth valve 32 are sent to enter the cold blowing process.
And step S3, acquiring the temperature of the natural gas in the outlet pipeline of the cold blowing section of the adsorption tower in real time, and sending a control signal for controlling the closing of a valve of the cold blowing section when the temperature reaches a preset temperature.
Specifically, the temperature in the outlet duct a6 of the cold-blowing section may be detected by a temperature detecting instrument, and as the cold-blowing section proceeds, the temperature in the outlet duct a6 of the cold-blowing section may decrease, and when the temperature decreases to a preset temperature, that is, equal to the preset temperature, a signal for controlling the fifth valve 31 and the sixth valve 32 to be closed is sent. It should be noted that the preset temperature may be determined according to actual situations, and the present embodiment does not limit the preset temperature.
In this embodiment, the end of the cold blowing section is determined by monitoring the temperature of the natural gas in the outlet pipeline a6 of the cold blowing section in real time, and the real-time monitoring mode can make the adsorbent more sufficiently lower to the preset temperature and better recover the adsorption function of the adsorbent.
In specific implementation, the preset adsorption time can be determined according to the following method: firstly according to the formulaDetermining the impurities required by the adsorption towerIn the formula, T is the adsorption time required by a certain impurity, and the unit is h; q is the full load adsorbent adsorption capacity of the adsorption tower, is determined by the structure of the device and the property and the mass of the adsorbent, and is a fixed value in kg; s is the content of the impurity in mg/Nm of the natural gas in the inlet pipeline of the adsorption section3(ii) a S' is the content of the impurity index controlled by natural gas at an outlet pipeline of an adsorption working section, and the unit is mg/Nm3(ii) a F is the flow in Nm of the inlet pipeline of the adsorption section3H is used as the reference value. And taking the determined minimum adsorption time as a preset adsorption time. In specific implementation, S' is an index content of the impurity in the natural gas in the outlet pipeline a2 of the adsorption section, that is, an allowable content of the impurity in the natural gas output from the adsorption section, and the content may be determined according to actual conditions, and this embodiment does not limit this content at all.
For example, for H which can adsorb impurity2O、CO2、C5+And H2For S adsorption column, first, H is calculated according to the above formula2O、CO2、C5+And H2The adsorption times required for S are respectively T1、T2、T3And T4Then, the minimum of the four adsorption times obtained by calculation is taken as a preset adsorption time.
In conclusion, the adsorption process is controlled by the adsorption time or the content of impurities in the natural gas in the outlet pipeline of the adsorption process, so that the impurities in the raw natural gas can be fully adsorbed, the adsorption process can be better controlled, the process is finished after the impurities are fully adsorbed, and the adsorption efficiency is improved; in addition, the impurity content of the natural gas in the outlet pipeline of the regeneration section is monitored in real time to determine whether the regeneration process is finished, so that the adsorbent can be fully desorbed.
Control device embodiment:
referring to fig. 3, fig. 3 is a block diagram of a natural gas adsorption tower control device according to an embodiment of the present invention. As shown, the apparatus comprises: a first module 100 and a second module 200. Wherein,
the first module 111 is configured to send a control signal for controlling an adsorption section valve of the adsorption tower to be opened, obtain a flow rate and an impurity content of natural gas in an inlet pipe of the adsorption section, determine a preset adsorption time according to the flow rate and the impurity content of the inlet pipe a1 of the adsorption section, and send a control signal for controlling the adsorption section valve to be closed and a regeneration section valve to be opened when an actual adsorption time reaches the preset adsorption time.
And the second module 200 is used for acquiring the impurity content of the natural gas in the outlet pipeline of the regeneration section of the adsorption tower in real time, and sending out control signals for controlling the valve of the regeneration section to be closed and the valve of the cold blowing section to be opened when the impurity content reaches the preset impurity value.
The specific implementation process of this embodiment may refer to the above control method embodiment, and this embodiment is not described herein again.
In this embodiment, can confirm adsorption time according to the flow and the impurity content of the natural gas in the inlet pipeline of adsorption workshop section, when impurity content is high and/or flow is big, prolong adsorption time, when impurity content is low and/or flow is little, shorten adsorption time, can see out, compared with the prior art, this embodiment adopts different adsorption time to the raw materials natural gas of different impurity content and flow, and then carry out abundant absorption to the impurity in the raw materials natural gas better, improve the efficiency and the life of adsorbent, practice thrift the energy consumption. According to the embodiment, whether the regeneration process is finished or not is determined by monitoring the impurity content of the natural gas in the outlet pipeline of the regeneration section in real time, so that the adsorbent can be fully desorbed.
Referring to fig. 4, the above embodiment further includes: a third module 300. The second module 200 is further configured to send a control signal for controlling the opening of the valve of the cold blowing section. The third module 300 is configured to obtain the temperature of the natural gas in the outlet pipeline of the cold blowing section of the adsorption tower in real time, and send a control signal for controlling the closing of a valve of the cold blowing section when the temperature reaches a preset temperature. For specific implementation processes of the second module 200 and the third module 300, reference may be made to the above control method embodiment, and details of this embodiment are not described herein again.
In this embodiment, the end of the cold blowing section is determined by monitoring the temperature of the natural gas in the outlet pipeline of the cold blowing section in real time, and the adsorbent can be more sufficiently reduced to the preset temperature by the real-time monitoring mode, so that the adsorption function of the adsorbent can be better recovered.
Referring to fig. 5, in the above embodiments, the first module 100 includes: a first calculating unit 110 for calculatingRespectively determining the adsorption time required by each impurity adsorbed by the adsorption tower, wherein T is the adsorption time required by the impurity; q is the full load adsorbent adsorption capacity of the adsorption tower; s0The impurity content of the natural gas in an inlet pipeline of an adsorption working section; s' is the control index content of the natural gas at the outlet of the adsorption section; f is the flow in the inlet pipeline of the adsorption working section; and taking the determined minimum adsorption time as a preset adsorption time. The specific implementation process of the first calculating unit 110 may refer to the above embodiment of the control method, and this embodiment is not described herein again.
In conclusion, the adsorption process is controlled by the adsorption time or the content of impurities in the natural gas in the outlet pipeline of the adsorption process, so that the impurities in the raw natural gas can be fully adsorbed, the adsorption process can be better controlled, the process is finished after the impurities are fully adsorbed, and the adsorption efficiency is improved; in addition, the impurity content of the natural gas in the outlet pipeline of the regeneration section is monitored in real time to determine whether the regeneration process is finished, so that the adsorbent can be fully desorbed.
The control system comprises:
referring to fig. 6 and 7, a preferred structure of the natural gas adsorption tower control system provided in the present embodiment is shown. As shown, the system includes: a first impurity detection unit 1, a flow meter 2, and a controller 4.
The first impurity detection unit 1 and the flowmeter 2 are both installed on an inlet pipeline A1 of an adsorption workshop section, the first impurity detection unit 1 is used for detecting the impurity content of natural gas in the inlet pipeline of the adsorption workshop section of the adsorption tower, and the flowmeter 2 is used for detecting the flow of the natural gas in the inlet pipeline of the adsorption workshop section of the adsorption tower.
The controller 4 is electrically connected with the first impurity detection unit 1 and the flowmeter 2, and is used for receiving the impurity content and the flow rate of the natural gas in the inlet pipeline A1 of the adsorption section, determining preset adsorption time according to the flow rate and the impurity content of the inlet pipeline A1 of the adsorption section, and sending out control signals for controlling the valve of the adsorption section to be closed and the valve of the regeneration section to be opened when the actual adsorption time reaches the preset adsorption time.
Specifically, the controller 4 may issue control to open and close the first valve 11, the second valve 12, the third valve 21, the fourth valve 22, the fifth valve 31, and the sixth valve 32. After the first valve 11 and the second valve 12 are opened, the raw natural gas enters the adsorption tower through the adsorption section inlet pipeline a1, and the flow rate and the impurity content of the natural gas in the adsorption section inlet pipeline a1 are obtained through the flowmeter 2 and the first impurity detection unit 1. The controller 4 can be a single chip microcomputer, a DSP and other processors.
In this embodiment, the controller 4 may control the adsorption process by controlling the adsorption time. Specifically, the preset adsorption time is determined according to the flow rate and the impurity content of the natural gas of the inlet pipeline of the adsorption section, and when the actual adsorption time reaches the preset adsorption time, the first valve 11 and the second valve 12 are controlled to be closed, and the third valve 21 and the fourth valve 22 are controlled to be opened, so that the adsorption tower enters a regeneration process. In this embodiment, the adsorption time may be determined according to the flow rate and the impurity content of the natural gas in the inlet pipe a1 of the adsorption section, when the impurity content is high and/or the flow rate is large, the adsorption time is prolonged, and when the impurity content is low and/or the flow rate is small, the adsorption time is shortened, and in specific implementation, the preset adsorption time may be determined according to the following method: firstly according to the formulaDetermining the adsorption time required by each impurity adsorbed by the adsorption tower, wherein T is the adsorption time required by a certain impurity and the unit is h; q is the full load adsorbent adsorption capacity of the adsorption tower, is determined by the structure of the device and the property and the mass of the adsorbent, and is a fixed value in kg; s is the content of the impurity in mg/Nm of the natural gas in the inlet pipeline of the adsorption section3(ii) a S' is the content of the impurity index controlled by natural gas at an outlet pipeline of an adsorption working section, and the unit is mg/Nm3(ii) a F is the flow in Nm of the inlet pipeline of the adsorption section3H is used as the reference value. And taking the determined minimum adsorption time as a preset adsorption time. In specific implementation, S' is an index content of the impurity in the natural gas in the outlet pipeline a2 of the adsorption section, and the content can be determined according to actual conditions, and this embodiment does not limit the content at all.
For example, if the impurities comprise H2O、CO2、C5+And H2S, then H is calculated according to the formula2O、CO2、C5+And H2The adsorption times required for S are respectively T1、T2、T3And T4And the minimum of the four adsorption times obtained by calculation is taken as a preset adsorption time. It should be noted that, in specific implementation, only the adsorption time required by impurities with excessive content can be calculated according to the above formula.
It can be seen that, all adopt fixed adsorption time to compare with the raw materials natural gas of whatever condition among the prior art, different adsorption time can be adopted to the condition of different raw materials natural gas to this embodiment, can adsorb the impurity in the raw materials natural gas better, improves the efficiency and the life-span of adsorbent, and the energy saving.
With reference to fig. 6 again, in the above embodiment, the method may further include: the second impurity detection unit 3 is used for detecting the impurity content of the natural gas in the regeneration section outlet pipeline A4 of the adsorption tower in real time; the controller 4 is connected with the second impurity detection unit 3, and is used for receiving the impurity content and sending out a control signal for controlling the valve of the regeneration section to be closed when the impurity content reaches the preset impurity value.
Specifically, the impurity content of the natural gas can be detected by the second impurity detection unit 3 disposed in the regeneration section outlet pipeline a2, the impurity content in the regeneration section outlet pipeline is continuously reduced as the regeneration process proceeds, and when the impurity content is equal to the preset impurity value, a control signal for controlling the valves of the regeneration section to be closed is sent, that is, the third valve 21 and the fourth valve 22 are closed, so as to end the regeneration process. In the embodiment, whether the regeneration process is finished or not is determined by monitoring the impurity content of the natural gas in the outlet pipeline A2 of the regeneration section in real time, so that the adsorbent can be fully desorbed.
The control method in this embodiment is applied not only to the PSA adsorption method but also to the adsorption step and the regeneration step in the TSA adsorption method, and the operation of this embodiment will be described below with reference to fig. 6 and 7:
1) opening an inlet valve 11 and an outlet valve 12 of an adsorption section, allowing raw material high-pressure natural gas from a gate station to enter the adsorption section of a purification unit C or a purification unit D through an inlet pipeline A1 of the adsorption section to selectively remove impurities (such as H2O, acid gas or mercury), when adsorption begins, the concentration of the impurities at the outlet of the adsorption section is low, the concentration of the impurities gradually rises along with the passage of time, and by detecting the content and flow of the impurities at the inlet of the raw material natural gas, calculating adsorption time T1After the adsorption time is reached, the controller 4 controls to close the first valve 11 and the second valve 12, and simultaneously opens the third valve 21 and the fourth valve 22, the adsorption section is finished, and the regeneration section is started; the output purified high-pressure natural gas enters the cold box through an outlet pipeline of the adsorption working section to exchange heat with the expanded low-temperature natural gas.
2) Inputting regeneration gas into a regeneration section through a regeneration section inlet pipeline A1, desorbing impurities adsorbed in the adsorbent, wherein the concentration of impurities at the outlet of the tower is high when the desorption process is started, the concentration of the impurities is gradually reduced along with the time, the content of the impurities in the regeneration section outlet pipeline A4 is detected by the second impurity detection unit 3, the detection result is sent to the controller 4, and when the content of the impurities is lower than the preset value of the impurities (for example, 1ppm), the controller 4 controls to close the third valve 21 and the fourth valve 22. For the PSA adsorption mode, the regeneration gas is low-pressure natural gas from a liquefaction working section and is used as the regeneration gas, impurities in the adsorbent are desorbed through the change of pressure, and the desorbed regeneration gas is output through an outlet pipeline A4 of the desorption working section and is sent to a natural gas pipe network; for the TSA adsorption mode, the regeneration gas may be low-pressure natural gas from a liquefaction section, the natural gas is heated to 280 ℃ by a heater 6, and then enters a regeneration section as high-temperature regeneration gas to desorb impurities in the adsorbent, and the desorbed regeneration gas is output through an outlet pipeline a4 of the desorption section and sent to a natural gas pipe network.
It can be seen that, in the embodiment, the adsorption time is determined according to the flow rate and the impurity content of the raw material natural gas, so that not only can impurities in the raw material natural gas be fully adsorbed, but also the adsorption working section can be better controlled, and the process is finished after the impurities are fully adsorbed, thereby improving the adsorption efficiency; in addition, the impurity content of the natural gas in the outlet pipeline of the regeneration section is monitored in real time to determine whether the regeneration process is finished, so that the adsorbent can be fully desorbed.
Referring to fig. 7, in the above embodiments, after the regeneration section is finished, the controller 4 is further configured to send out a control signal for controlling the valve opening of the cold blowing section. The embodiment may further include: the temperature detection unit 5 is used for detecting the temperature of the natural gas in the outlet pipeline A6 of the cold blowing section of the adsorption tower in real time, and the controller 4 is connected with the temperature detection unit 5 and used for receiving the temperature and sending out a control signal for controlling the closing of a valve of the cold blowing section when the temperature reaches a preset temperature. This example is applicable to a TSA adsorption mode.
Specifically, after the regeneration section is finished, the controller 4 may further control the cold blowing section to open the valve, and control the fifth valve 31 and the sixth valve 32 to open, so as to enter the cold blowing section. This temperature detecting unit 5 can be a temperature detecting instrument, and is installed on cold-blowing section outlet pipeline a6 to detect the temperature in cold-blowing section outlet pipeline a6, and along with the going on of cold-blowing section, the temperature in cold-blowing section outlet pipeline a6 will drop, and when this temperature drops to the preset temperature, namely equals to the preset temperature, send out the signal of control closing fourth valve 31 and fifth valve 32, finish the cold-blowing section. It should be noted that the preset temperature may be determined according to actual situations, and the present embodiment does not limit the preset temperature.
This embodiment is applicable to a TSA adsorption mode, and the above working process may further include a cold blowing process, specifically:
3) and the low-pressure natural gas enters the adsorption tower through the inlet pipeline A5 of the cold blowing section to cool the adsorbent, after the outlet temperature of the cold blowing section reaches the set temperature, the cold blowing is finished, the next cycle is started, and the low-pressure natural gas used as cold blowing gas is output through the outlet pipeline A6 of the cold blowing section and enters a natural gas pipe network.
In this embodiment, the end of the cold blowing section is determined by monitoring the temperature of the natural gas in the outlet pipeline a6 of the cold blowing section in real time, and the real-time monitoring mode can make the adsorbent more sufficiently lower to the preset temperature and better recover the adsorption function of the adsorbent.
Each valve in the embodiment can be an electric control valve or a hydraulic valve.
Preferably, in the specific implementation, the preset value of the impurities can be less than or equal to 1ppm, and the preset temperature can be less than or equal to 40 ℃.
It should be noted that, in specific implementation, referring to fig. 8 and 9, an optimization calculator may be further added, the optimization calculator receives the parameters detected by the first impurity detection unit 1, the second impurity detection unit 3, the flow meter 2 and the temperature detection unit 5, calculates the preset adsorption time, or compares the preset adsorption time with a corresponding preset value, sends a signal for controlling the opening or closing of each valve to the controller 4, and the controller 4 operates each valve according to the received signal.
It should be noted that the principles of the control method, the control device and the control system of the natural gas adsorption tower in the present invention are similar, and the related points can be referred to each other.
In conclusion, the adsorption process is controlled by the adsorption time or the content of impurities in the natural gas in the outlet pipeline of the adsorption process, so that the impurities in the raw natural gas can be fully adsorbed, the adsorption process can be better controlled, the process is finished after the impurities are fully adsorbed, and the adsorption efficiency is improved; in addition, the impurity content of the natural gas in the outlet pipeline of the regeneration section is monitored in real time to determine whether the regeneration process is finished, so that the adsorbent can be fully desorbed.
Purification system embodiment:
the embodiment of the invention provides a purification system, which comprises at least one purification unit and any one of the natural gas adsorption tower control systems. Each purification unit comprises at least one adsorption tower, and each adsorption tower in the purification system is controlled by the natural gas adsorption tower control system. The specific implementation process of the natural gas adsorption tower control system can be referred to the above description, and the details of this embodiment are not repeated herein.
Because the natural gas adsorption tower control system has the effects, the purification system with the natural gas adsorption tower control system also has corresponding technical effects.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. A natural gas adsorption tower control method is characterized by comprising the following steps:
the first step, sending out a control signal for controlling the opening of a valve at an adsorption section of the adsorption tower; acquiring the flow and impurity content of natural gas in an inlet pipeline of the adsorption working section, determining preset adsorption time according to the flow and impurity content of the natural gas, and sending control signals for controlling the valve of the adsorption working section to be closed and the valve of the regeneration working section to be opened when the actual adsorption time reaches the preset adsorption time;
and a second step of acquiring the impurity content of the natural gas in an outlet pipeline of the regeneration section of the adsorption tower in real time, and sending a control signal for controlling a valve of the regeneration section to be closed when the impurity content reaches an impurity preset value.
2. The natural gas adsorption tower control method of claim 1,
the second step further comprises: sending a control signal for controlling the opening of a valve of the cold blowing section;
the control method further comprises the following steps: and a third step of acquiring the temperature of the natural gas in an outlet pipeline of the cold blowing section of the adsorption tower in real time, and sending a control signal for controlling the closing of a valve of the cold blowing section when the temperature reaches a preset temperature.
3. The natural gas adsorption tower control method of claim 1 or 2, wherein the determining the preset adsorption time according to the flow rate and the impurity content of the inlet pipe in the first step further comprises:
according to the formulaRespectively determining the adsorption time required by each impurity adsorbed by the adsorption tower, wherein T is the adsorption time required by the impurity; q is the full load adsorbent adsorption capacity of the adsorption tower; s0Is the content of the impurity in the natural gas in the inlet pipeline of the adsorption section; s' is the index content of the natural gas at the outlet of the adsorption section for controlling the impurities; f is the flow in the inlet pipeline of the adsorption working section;
and taking the determined minimum adsorption time as a preset adsorption time.
4. A natural gas adsorption tower control device, comprising:
the first module is used for sending a control signal for controlling the valve of the adsorption section of the adsorption tower to be opened, acquiring the flow rate and the impurity content of natural gas in an inlet pipeline of the adsorption section, determining preset adsorption time according to the flow rate and the impurity content of the natural gas in the inlet pipeline, and sending a control signal for controlling the valve of the adsorption section to be closed when the actual adsorption time reaches the preset adsorption time;
and the second module is used for acquiring the impurity content of the natural gas in an outlet pipeline of the regeneration section of the adsorption tower in real time and sending out control signals for controlling the valve of the regeneration section to be closed and the valve of the cold blowing section to be opened when the impurity content reaches an impurity preset value.
5. The natural gas adsorption tower control device of claim 4,
the second module is also used for sending out a control signal for controlling the opening of the valve of the cold blowing section;
the control device further includes: and the third module is used for acquiring the temperature of the natural gas in the outlet pipeline of the cold blowing section of the adsorption tower in real time and sending a control signal for controlling the closing of a valve of the cold blowing section when the temperature reaches a preset temperature.
6. The natural gas adsorption tower control device of claim 4 or 5, wherein the first module comprises: a first calculation unit to:
according to the formulaRespectively determining the adsorption time required by each impurity adsorbed by the adsorption tower, wherein T is the adsorption time required by the impurity; q is the full load adsorbent adsorption capacity of the adsorption tower; s0Is the content of the impurity in the natural gas in the inlet pipeline of the adsorption section; s' is the index content of the natural gas at the outlet of the adsorption section for controlling the impurities; f is the flow in the inlet pipeline of the adsorption working section;
and taking the determined minimum adsorption time as a preset adsorption time.
7. A natural gas adsorption tower control system, comprising:
the first impurity detection unit is used for detecting the impurity content of the natural gas in an inlet pipeline of an adsorption section of the adsorption tower;
the flowmeter is used for detecting the flow of the natural gas in an inlet pipeline of an adsorption section of the adsorption tower;
and the controller is connected with the first impurity detection unit and the flowmeter and is used for receiving the impurity content and the flow of the natural gas in the inlet pipeline of the adsorption working section, determining preset adsorption time according to the impurity content and the flow of the inlet pipeline, and sending out control signals for controlling the valve of the adsorption working section to be closed and the valve of the regeneration working section to be opened when the actual adsorption time reaches the preset adsorption time.
8. The natural gas adsorption tower control system of claim 7, further comprising:
the second impurity detection unit is used for detecting the impurity content of the natural gas in an outlet pipeline of a regeneration working section of the adsorption tower in real time;
and the controller is connected with the second impurity detection unit and used for receiving the impurity content and sending a control signal for controlling the regeneration section valve to be closed when the impurity content reaches an impurity preset value.
9. The natural gas adsorption tower control system of claim 8,
the controller is also used for sending out a control signal for controlling the opening of the valve of the cold blowing section;
the control system further comprises: the temperature detection unit is used for detecting the temperature of the natural gas in the outlet pipeline of the cold blowing section of the adsorption tower in real time;
the controller is connected with the temperature detection unit and used for receiving the temperature and sending out a control signal for controlling the closing of the cold blowing section valve when the temperature reaches a preset temperature.
10. A purification system comprising at least one adsorption unit, each of said purification units comprising at least one adsorption column, further comprising a natural gas adsorption column control system as claimed in any one of claims 7 to 9.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106512647A (en) * | 2016-12-15 | 2017-03-22 | 甘肃银光聚银化工有限公司 | Process of removing CO2 through pressure swing adsorption |
| CN114437846A (en) * | 2020-11-04 | 2022-05-06 | 中国石油化工股份有限公司 | Optimization method for natural gas pressure swing adsorption denitrification based on computer |
| CN114901379A (en) * | 2020-01-02 | 2022-08-12 | 阿特拉斯·科普柯空气动力股份有限公司 | Method for drying compressed gas |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1223167A (en) * | 1997-12-19 | 1999-07-21 | 普拉塞尔技术有限公司 | Method for operation of air prepurifier which takes into account inlet air conditions |
| US20040055462A1 (en) * | 2002-06-21 | 2004-03-25 | Christian Monereau | Method for controlling a unit for the treatment by pressure swing adsorption of at least one feed gas |
| CN101564634A (en) * | 2008-04-21 | 2009-10-28 | 气体产品与化学公司 | Improvements in cyclical swing absorption processes |
| CN101972582A (en) * | 2010-11-05 | 2011-02-16 | 北京信诺海博石化科技发展有限公司 | Switching method of pressure swing adsorption device for treating non-condensable gas |
| CN102712859A (en) * | 2010-01-26 | 2012-10-03 | 大阪瓦斯株式会社 | Combustible gas enrichment device |
| CN103071475A (en) * | 2013-01-09 | 2013-05-01 | 西南石油大学 | Natural gas absorbent regeneration and energy conservation technology and device |
-
2015
- 2015-07-23 CN CN201510438272.4A patent/CN105126533A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1223167A (en) * | 1997-12-19 | 1999-07-21 | 普拉塞尔技术有限公司 | Method for operation of air prepurifier which takes into account inlet air conditions |
| US20040055462A1 (en) * | 2002-06-21 | 2004-03-25 | Christian Monereau | Method for controlling a unit for the treatment by pressure swing adsorption of at least one feed gas |
| CN101564634A (en) * | 2008-04-21 | 2009-10-28 | 气体产品与化学公司 | Improvements in cyclical swing absorption processes |
| CN102712859A (en) * | 2010-01-26 | 2012-10-03 | 大阪瓦斯株式会社 | Combustible gas enrichment device |
| CN101972582A (en) * | 2010-11-05 | 2011-02-16 | 北京信诺海博石化科技发展有限公司 | Switching method of pressure swing adsorption device for treating non-condensable gas |
| CN103071475A (en) * | 2013-01-09 | 2013-05-01 | 西南石油大学 | Natural gas absorbent regeneration and energy conservation technology and device |
Non-Patent Citations (1)
| Title |
|---|
| 王遇冬: "《天然气处理与加工工艺》", 30 April 1999, 石油工业出版社 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106512647A (en) * | 2016-12-15 | 2017-03-22 | 甘肃银光聚银化工有限公司 | Process of removing CO2 through pressure swing adsorption |
| CN114901379A (en) * | 2020-01-02 | 2022-08-12 | 阿特拉斯·科普柯空气动力股份有限公司 | Method for drying compressed gas |
| CN114901379B (en) * | 2020-01-02 | 2024-02-27 | 阿特拉斯·科普柯空气动力股份有限公司 | Method for drying compressed gas |
| CN114437846A (en) * | 2020-11-04 | 2022-05-06 | 中国石油化工股份有限公司 | Optimization method for natural gas pressure swing adsorption denitrification based on computer |
| CN114437846B (en) * | 2020-11-04 | 2023-01-10 | 中国石油化工股份有限公司 | Optimization method for natural gas pressure swing adsorption denitrification based on computer |
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