CN100398181C - Purifying device for air separation system - Google Patents
Purifying device for air separation system Download PDFInfo
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- CN100398181C CN100398181C CNB2005100611078A CN200510061107A CN100398181C CN 100398181 C CN100398181 C CN 100398181C CN B2005100611078 A CNB2005100611078 A CN B2005100611078A CN 200510061107 A CN200510061107 A CN 200510061107A CN 100398181 C CN100398181 C CN 100398181C
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- 238000000926 separation method Methods 0.000 title claims abstract description 14
- 239000007789 gas Substances 0.000 claims abstract description 44
- 238000010438 heat treatment Methods 0.000 claims abstract description 39
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 30
- 239000012530 fluid Substances 0.000 claims abstract description 15
- 238000000746 purification Methods 0.000 claims description 12
- 239000002912 waste gas Substances 0.000 claims description 6
- 238000003795 desorption Methods 0.000 abstract description 13
- 239000007788 liquid Substances 0.000 abstract description 2
- 239000003795 chemical substances by application Substances 0.000 abstract 1
- 238000005406 washing Methods 0.000 abstract 1
- 239000002918 waste heat Substances 0.000 abstract 1
- 238000000034 method Methods 0.000 description 9
- 239000002245 particle Substances 0.000 description 7
- 238000010521 absorption reaction Methods 0.000 description 6
- 239000002250 absorbent Substances 0.000 description 4
- 230000002745 absorbent Effects 0.000 description 4
- 239000003463 adsorbent Substances 0.000 description 4
- 238000005057 refrigeration Methods 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 238000009835 boiling Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005243 fluidization Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000007781 pre-processing Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
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Abstract
The present invention discloses a purifying device for an air separation system, which has a compressor, a cooler, a water scrubber, a water separator, a first purifier, an oil pump and a heating furnace which are orderly connected, wherein the first purifier is connected with a second purifier in parallel, and the first purifier and the second purifier are connected with a filter; the water washing tower is connected with a water pump; the first purifier and the second purifier are fluid beds. The present invention adopts the fluid beds to replace fixed beds; in such a way, the requirements for heat transfer and mass transfer between an adsorbing agent and a feeding gas can be rapidly fulfilled, and the running efficiency of the system is improved; a liquid heating medium is utilized for heaing the purifiers, and a stable heat source is provided for the purifiers; the heat amount generated by compressed air is used for preheating the gas entering the fluid beds in a desorption stage, and waste heat is fully utilized.
Description
Technical field
The present invention relates to a kind of purification devices that is used for space division system, fluidized bed applications in the purification devices of space division system, is blowed absorbent particles by feeding gas and flows in fluid bed, finish rapidly and conduct heat and mass transport process, improved running efficiency of system; Utilize liquid heating medium heating purifier, for purifier provides stable thermal source, the heat preheating that compressed air is produced will enter the gas of desorption stage fluid bed, make full use of used heat, improve the energy utilization rate of system.
Background technology
Air separation is the technology of a comparative maturity in the domestic and international industrial production.Adopt the sixties separation by deep refrigeration to obtain space division product in the past always, after this, along with deepening continuously to (PSA) technical research of transformation adsorbing separation, this technology is used widely industrial also having obtained, for now, large-scale air separation plant is mainly used separation by deep refrigeration, and small-sized equipment then mainly tends to adopt the transformation isolation technics.The structure of space division system is generally comparatively complicated, purification devices is as a preprocessing system of space division system, in whole space division system, occupy important status, the height of purification devices efficient not only directly affects the height of space division system final products purity, but also influences the safety and the stable operation of system's operation.The core component of purification devices is a purifier, and traditional purifier is generally the fixed bed of two alternations, a bed absorption, another desorption, the shortcoming of fixed-bed operation is that running efficiency of system is lower, and it is slow that absorption and desorption process carry out, and the utilization rate of adsorbent is lower.Desorption process is that the waste gas from air separation column is delivered in the bed after the heating furnace heating, carries out desorption by heating, and heating furnace generally has several being used alternatingly.The mode of heating that this purifier adopted is, in heating furnace, heater strip is the gas that directly heats in the heating furnace of flowing through, and power ratio is bigger, the shortcoming of this heating means is: not only heater strip is easy to damage, and, be easy to generate superheating phenomenon in the system according to the experience of practical application.The control system of heating furnace not only will be considered parameters such as the power, heating-up temperature of flow velocity, the heater strip of gas, but also will consider the influence between each parameter, and because the hysteresis of control system image data, the factors of bringing to system such as influence.Heater control system be difficult to guarantee the long-time operate as normal of heating furnace like this because as long as small deviation appears in a certain link of control system, just might cause heater strip to burn and heating furnace overheated.
Summary of the invention
The purpose of this invention is to provide a kind of purification devices that is used for space division system.
It has compressor, cooler, water scrubber, separator, first purifier, oil pump, the heating furnace that connects successively, first purifier also is connected to second purifier, first purifier, second purifier link to each other with filter, water scrubber is connected to water pump, and first purifier, second purifier are fluid bed.
The compressor gas outlet links to each other with first port of cooler, the pipe end of cooler second port is divided into two-way, the pipe end of second port of cooler tell a road through second valve, first gas circulator links to each other with first purifier, another Lu Jingdi three valves that the pipe end of second port of cooler is told, second gas circulator links to each other with second purifier, the 3rd port of cooler links to each other with first port of water scrubber, the 4th port of cooler links to each other with the waste gas outlet of air separation column, second port of water scrubber links to each other with separator through pipeline, the 3rd port of water scrubber links to each other with water pump through pipeline, the 4th port of water scrubber links to each other with first valve, the gas vent pipeline end of separator is divided into two-way, the gas vent pipeline end of separator tell a road through the 4th valve, first gas circulator links to each other with first purifier, another Lu Jingdi five valves that the gas vent pipeline end of separator is told, second gas circulator links to each other with second purifier, first port of heating furnace links to each other with oil pump, the pipeline end of second port of heating furnace is divided into two-way, what the pipeline end of second port of heating furnace was told a road links to each other with second purifier through the 9th valve, another Lu Jingdi eight valves that the pipeline end of second port of heating furnace is told link to each other with first purifier, the terminal pipeline of oil pump outlet is divided into two-way, what the terminal pipeline of oil pump outlet was told a road links to each other with first purifier through the 6th valve, another Lu Jingdi seven valves that the terminal pipeline of oil pump outlet is told link to each other with second purifier, first purifier is divided into three the tunnel through the outlet conduit end of first cyclone separator, the first via that first purifier is told through the outlet conduit end of first cyclone separator links to each other with filter through the tenth valve, first purifier through the outlet conduit end of first cyclone separator tell the second the tunnel through the 12 valve, the pipe outlet of the 13 valve and second cyclone separator is terminal to link to each other, the Third Road that first purifier is told through the outlet conduit end of first cyclone separator communicates with atmosphere through the 14 valve, second purifier is divided into three the tunnel through the outlet conduit end of second cyclone separator, the first via that second purifier is told through the outlet conduit end of second cyclone separator links to each other with filter through the 11 valve, second purifier through the outlet conduit end of second cyclone separator tell the second the tunnel through the 13 valve, the pipe outlet of the 12 valve and first cyclone separator is terminal to link to each other, and the Third Road that second purifier is told through the outlet conduit end of second cyclone separator communicates with atmosphere through the 15 valve.
The present invention is applied to fluidization technique in the purification devices of space division system.The running efficiency of system that is occurred in its process at the operation of fixed bed purifier is low, it is slow that absorption and desorption process carry out, the utilization rate of adsorbent is lower, heater strip damages easily and heating furnace is easy to generate shortcomings such as superheating phenomenon, adopt fluid bed to replace fixed bed, with the heating system that has oil pump, by heat-conducting oil heating desorption particle, not only can finish the heat transfer between adsorbent and the feeding gas so fast, the mass transfer requirement, for desorption process provides stable thermal source, reduce energy resource consumption, and simplified control system, increased the life-span of system's operation.
Description of drawings
Fig. 1 is the purification devices structural representation that is used for space division system;
Fig. 2 is a purifier structural representation of the present invention.
The specific embodiment
The purification devices that is used for space division system has compressor 1, cooler 2, water scrubber 5, separator 10, first purifier 18, oil pump 33, the heating furnace 35 that connects successively, first purifier 18 also is connected to second purifier 19, first purifier 18, second purifier 19 link to each other with filter 36, water scrubber 5 is connected to water pump 7, the first purifiers 18, second purifier 19 is a fluid bed.
Compressor 1 gas vent links to each other with first port 40 of cooler 2, the pipe end of cooler 2 second ports 3 is divided into two-way, the pipe end of second port 3 of cooler 2 tell a road through second valve 12, first gas circulator 16 links to each other with first purifier 18, another Lu Jingdi three valves 13 that the pipe end of second port 3 of cooler 2 is told, second gas circulator 17 links to each other with second purifier 19, the 3rd port 4 of cooler 2 links to each other with first port 41 of water scrubber 5, the 4th port 37 of cooler 2 links to each other with the waste gas outlet of air separation column, second port 9 of water scrubber 5 links to each other with separator 10 through pipeline, the 3rd port 8 of water scrubber 5 links to each other with water pump 7 through pipeline, the 4th port 42 of water scrubber 5 links to each other with first valve 6, gas vent pipeline 11 ends of separator 10 are divided into two-way, gas vent pipeline 11 ends of separator 10 tell a road through the 4th valve 14, first gas circulator 16 links to each other with first purifier 18, another Lu Jingdi five valves 15 that gas vent pipeline 11 ends of separator 10 are told, second gas circulator 17 links to each other with second purifier 19, first port 34 of heating furnace 35 links to each other with oil pump 33, the pipeline end of second port 32 of heating furnace 35 is divided into two-way, what the pipeline end of second port 32 of heating furnace 35 was told a road links to each other with second purifier 19 through the 9th valve 25, another Lu Jingdi eight valves 24 that the pipeline end of second port 32 of heating furnace 35 is told link to each other with first purifier 18, the terminal pipeline of oil pump 33 outlets is divided into two-way, what the terminal pipeline of oil pump 33 outlet was told a road links to each other with first purifier 18 through the 6th valve 22, another Lu Jingdi seven valves 23 that the terminal pipeline of oil pump 33 outlets is told link to each other with second purifier 19, first purifier 18 is divided into three the tunnel through the outlet conduit end of first cyclone separator 20, the first via that first purifier 18 is told through the outlet conduit end of first cyclone separator 20 links to each other with filter 36 through the tenth valve 26, first purifier 18 through the outlet conduit end of first cyclone separator 20 tell the second the tunnel through the 12 valve 28, the pipe outlet of the 13 valve 29 and second cyclone separator 21 is terminal to link to each other, the Third Road that first purifier 18 is told through the outlet conduit end of first cyclone separator 20 is through the 14 valve 30, pipeline 39 communicates with atmosphere, second purifier 19 is divided into three the tunnel through the outlet conduit end of second cyclone separator 21, the first via that second purifier 19 is told through the outlet conduit end of second cyclone separator 21 links to each other with filter 36 through the 11 valve 27, second purifier 19 through the outlet conduit end of second cyclone separator 21 tell the second the tunnel through the 13 valve 29, the pipe outlet of the 12 valve 28 and first cyclone separator 20 is terminal to link to each other, and the Third Road that second purifier 19 is told through the outlet conduit end of second cyclone separator 21 is through the 15 valve 31, pipeline 39 communicates with atmosphere.
Enter cooler from the waste gas of air separation column from the 4th port 37 of cooler 2, flow out from second port 3 of cooler 2.
The gas that comes out from compressor 1 enters cooler from first port 40 of cooler 2, flows out from the 3rd port 4 of cooler 2.The gas that is preheated from cooler (2) second ports 3 flow out enters first purifier 18 or enters second purifier 19 through the 3rd valve 13, second gas circulator 17 through second valve 12, first gas circulator 16.
The high temperature heat conductive oil that flows out from heating furnace 35 enters in the heat exchange coil of first purifier 18 through oil pump 33, the 6th valve 22, after the 8th valve 24 flows back to heating furnace 35, or enter in the heat exchange coil of second purifier 19 through the 7th valve 23, after the 9th valve 25 flows back to heating furnace 35.
As shown in Figure 1, after air is compressed by compressor 1, enter through subcooler 2 and the 4th port 37 from cooler 2, after carrying out heat exchange from the waste gas of air separation column, enter water scrubber 5, separator 10, remove wherein dust and free water, suppose 18 absorption of first purifier, then gas enters first purifier 18 by pipeline 11 through the 4th valve 14, first gas circulator 16, and purified gas removes air separation column through the tenth valve 26, filter 36 by pipeline 38.
After 18 absorption of first purifier are saturated, the 4th valve 14, the tenth valve 26 are closed at this moment, the 12 valve 28 is opened, and the 13 valve 29 is closed, and two purifiers are all pressed several seconds, close 12 valves 28 then, open second valve the 12, the 14 valve 30 and carry out the emptying desorption process, simultaneously, open the 6th valve 22, the 8th valve 24, start oil pump 33, heat the particle in first purifier 18.The absorption of second purifying 19, desorption process follow first purifier 18 identical.Wherein, the 12 valve the 28, the 13 valve 29 is reverse energising magnetic diaphragm valve.
As shown in Figure 2, what flow in first purifier 18 (or the second purifier 19) coil pipe is hot fluid, the hot fluid that flows out from heating furnace 35 is flowed in first purifier 18 (or the second purifier 19) coil pipe by oil pump 33 pressurization back self-heating fluid intakes, carry out heat exchange with the particle of boiling in first purifier 18 (or second purifier 19), the hot fluid after being cooled is got back to heating furnace 35 from the hot fluid outlet; Absorbent particles rests in first purifier 18 (or second purifier 19) all the time; Gas after the preheating by gas circulator in first purifier 18 (or second purifier 19) is sent in the gas access, blow absorbent particles and in first purifier 18 (or second purifier 19), make turbulent flow, carry out heat convection with the hot fluid in the heat exchange coil, when the temperature of absorbent particles reached desorption temperature, the gas that is adsorbed desorption in the adsorbent came out; The feed gas of first purifier 18 (or second purifier 19) of flowing through flows out first purifier 18 (or second purifier 19) through first cyclone separator 20 (or second cyclone separator 21) from gas vent.
Claims (2)
1. purification devices that is used for space division system, it is characterized in that, it has the compressor (1) that connects successively, cooler (2), water scrubber (5), separator (10), first purifier (18), oil pump (33), heating furnace (35), first purifier (18) also is connected to second purifier (19), first purifier (18), second purifier (19) links to each other with filter (36), water scrubber (5) is connected to water pump (7), first purifier (18), second purifier (19) is a fluid bed, said compressor (1) gas vent links to each other with first port (40) of cooler (2), the pipe end of cooler (2) second ports (3) is divided into two-way, the pipe end of second port (3) of cooler (2) tell a road through second valve (12), first gas circulator (16) links to each other with first purifier (18), another Lu Jingdi three valves (13) that the pipe end of second port (3) of cooler (2) is told, second gas circulator (17) links to each other with second purifier (19), the 3rd port (4) of cooler (2) links to each other with first port (41) of water scrubber (5), the 4th port (37) of cooler (2) links to each other with the waste gas outlet of air separation column, second port (9) of water scrubber (5) links to each other with separator (10) through pipeline, the 3rd port (8) of water scrubber (5) links to each other with water pump (7) through pipeline, the 4th port (42) of water scrubber (5) links to each other with first valve (6), gas vent pipeline (11) end of separator (10) is divided into two-way, gas vent pipeline (11) end of separator (10) tell a road through the 4th valve (14), first gas circulator (16) links to each other with first purifier (18), another Lu Jingdi five valves (15) that gas vent pipeline (11) end of separator (10) is told, second gas circulator (17) links to each other with second purifier (19), first port (34) of heating furnace (35) links to each other with oil pump (33), the pipeline end of second port (32) of heating furnace (35) is divided into two-way, what the pipeline end of second port (32) of heating furnace (35) was told a road links to each other with second purifier (19) through the 9th valve (25), another Lu Jingdi eight valves (24) that the pipeline end of second port (32) of heating furnace (35) is told link to each other with first purifier (18), the terminal pipeline of oil pump (33) outlet is divided into two-way, what the terminal pipeline of oil pump (33) outlet was told a road links to each other with first purifier (18) through the 6th valve (22), another Lu Jingdi seven valves (23) that the terminal pipeline of oil pump (33) outlet is told link to each other with second purifier (19), first purifier (18) is divided into three the tunnel through the outlet conduit end of first cyclone separator (20), the first via that first purifier (18) is told through the outlet conduit end of first cyclone separator (20) links to each other with filter (36) through the tenth valve (26), first purifier (18) through the outlet conduit end of first cyclone separator (20) tell the second the tunnel through the 12 valve (28), the pipe outlet of the 13 valve (29) and second cyclone separator (21) is terminal to link to each other, the Third Road that first purifier (18) is told through the outlet conduit end of first cyclone separator (20) is through the 14 valve (30), pipeline (39) communicates with atmosphere, second purifier (19) is divided into three the tunnel through the outlet conduit end of second cyclone separator (21), the first via that second purifier (19) is told through the outlet conduit end of second cyclone separator (21) links to each other with filter (36) through the 11 valve (27), second purifier (19) through the outlet conduit end of second cyclone separator (21) tell the second the tunnel through the 13 valve (29), the pipe outlet of the 12 valve (28) and first cyclone separator (20) is terminal to link to each other, and the Third Road that second purifier (19) is told through the outlet conduit end of second cyclone separator (21) is through the 15 valve (31), pipeline (39) communicates with atmosphere.
2. a kind of purification devices that is used for space division system according to claim 1 is characterized in that described the 12 valve (28), the 13 valve (29) are reverse energising magnetic diaphragm valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100611078A CN100398181C (en) | 2005-10-14 | 2005-10-14 | Purifying device for air separation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100611078A CN100398181C (en) | 2005-10-14 | 2005-10-14 | Purifying device for air separation system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1772344A CN1772344A (en) | 2006-05-17 |
| CN100398181C true CN100398181C (en) | 2008-07-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2005100611078A Expired - Fee Related CN100398181C (en) | 2005-10-14 | 2005-10-14 | Purifying device for air separation system |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103357231A (en) * | 2012-04-01 | 2013-10-23 | 昆山市创新科技检测仪器有限公司 | Air purification device and air purification treatment method |
| CN103157342A (en) * | 2012-11-09 | 2013-06-19 | 中国科学院理化技术研究所 | Natural gas/coal bed gas adsorption purification method and device with forced heat exchange structure |
| CN103463926A (en) * | 2013-07-04 | 2013-12-25 | 中国科学院理化技术研究所 | Molecular sieve adsorption tower with heat exchange medium channel |
| CN104190208A (en) * | 2014-08-12 | 2014-12-10 | 清本环保工程(杭州)有限公司 | Method for treating organic waste gas by using circulating fluidized bed |
| CN112484395A (en) * | 2020-11-18 | 2021-03-12 | 浙江理工大学 | Air separation equipment with explosion-proof function |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10225610A (en) * | 1997-02-17 | 1998-08-25 | Kawasaki Steel Corp | Method and device for regenerating adsorber |
| CN1202896C (en) * | 2002-02-07 | 2005-05-25 | 北京燕化高新技术股份有限公司 | Air-purifying method during separating air |
-
2005
- 2005-10-14 CN CNB2005100611078A patent/CN100398181C/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10225610A (en) * | 1997-02-17 | 1998-08-25 | Kawasaki Steel Corp | Method and device for regenerating adsorber |
| CN1202896C (en) * | 2002-02-07 | 2005-05-25 | 北京燕化高新技术股份有限公司 | Air-purifying method during separating air |
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