CN112808143A - Medicament precipitation prevention system for desulfurization system and medicament precipitation monitoring method - Google Patents
Medicament precipitation prevention system for desulfurization system and medicament precipitation monitoring method Download PDFInfo
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- CN112808143A CN112808143A CN202110128556.9A CN202110128556A CN112808143A CN 112808143 A CN112808143 A CN 112808143A CN 202110128556 A CN202110128556 A CN 202110128556A CN 112808143 A CN112808143 A CN 112808143A
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- 239000003814 drug Substances 0.000 title claims abstract description 69
- 238000006477 desulfuration reaction Methods 0.000 title claims abstract description 58
- 230000023556 desulfurization Effects 0.000 title claims abstract description 58
- 238000001556 precipitation Methods 0.000 title claims abstract description 48
- 238000012544 monitoring process Methods 0.000 title claims abstract description 21
- 238000000034 method Methods 0.000 title claims abstract description 20
- 230000002265 prevention Effects 0.000 title claims abstract description 14
- 238000003860 storage Methods 0.000 claims abstract description 318
- 239000007921 spray Substances 0.000 claims abstract description 95
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 38
- 238000012423 maintenance Methods 0.000 claims description 69
- 238000003756 stirring Methods 0.000 claims description 64
- 239000003153 chemical reaction reagent Substances 0.000 claims description 29
- 238000001514 detection method Methods 0.000 claims description 28
- 238000005070 sampling Methods 0.000 claims description 26
- 230000008676 import Effects 0.000 claims description 13
- 239000000126 substance Substances 0.000 claims description 13
- 238000004891 communication Methods 0.000 claims description 10
- 230000008859 change Effects 0.000 claims description 9
- 230000000694 effects Effects 0.000 claims description 9
- 230000008569 process Effects 0.000 claims description 7
- 238000006243 chemical reaction Methods 0.000 claims description 2
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 239000013043 chemical agent Substances 0.000 claims 8
- 230000008021 deposition Effects 0.000 claims 8
- 239000002245 particle Substances 0.000 abstract description 5
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 239000007788 liquid Substances 0.000 description 23
- 238000012546 transfer Methods 0.000 description 9
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- 238000002156 mixing Methods 0.000 description 6
- 230000002776 aggregation Effects 0.000 description 5
- 238000005054 agglomeration Methods 0.000 description 4
- 150000003464 sulfur compounds Chemical class 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000009826 distribution Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000013049 sediment Substances 0.000 description 2
- 229910052717 sulfur Inorganic materials 0.000 description 2
- 239000011593 sulfur Substances 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 238000009388 chemical precipitation Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000012459 cleaning agent Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003472 neutralizing effect Effects 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 239000008177 pharmaceutical agent Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 150000004763 sulfides Chemical class 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/20—Measuring; Control or regulation
- B01F35/21—Measuring
- B01F35/211—Measuring of the operational parameters
- B01F35/2117—Weight
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/48—Sulfur compounds
- B01D53/50—Sulfur oxides
- B01D53/501—Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound
- B01D53/502—Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound characterised by a specific solution or suspension
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/80—Semi-solid phase processes, i.e. by using slurries
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/92—Chemical or biological purification of waste gases of engine exhaust gases
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/20—Measuring; Control or regulation
- B01F35/22—Control or regulation
- B01F35/2201—Control or regulation characterised by the type of control technique used
- B01F35/2203—Controlling the mixing process by feed-forward, i.e. a parameter of the components to be mixed is measured and the feed values are calculated
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/40—Alkaline earth metal or magnesium compounds
- B01D2251/402—Alkaline earth metal or magnesium compounds of magnesium
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Environmental & Geological Engineering (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Combustion & Propulsion (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention relates to a medicament precipitation prevention system for a desulfurization system and a medicament precipitation monitoring method. The agent anti-precipitation system for the desulfurization system comprises a storage cabin, a storage cabin inlet pipe, a storage cabin spray pipe and a delivery pump, wherein the storage cabin inlet pipe is communicated with the storage cabin spray pipe, and the delivery pump is arranged on the inlet pipe; the storage cabin inlet pipe comprises a plurality of storage cabin suction ports, the storage cabin spray pipe comprises a plurality of storage cabin spray heads, the storage cabin suction ports and the storage cabin spray heads are arranged in the storage cabin, the storage cabin suction ports are evenly arranged in the bottom of the storage cabin, and the storage cabin spray heads are evenly arranged in the top of the storage cabin. The invention can effectively promote the circular flow of the medicament in the storage cabin, avoid the phenomenon that high-concentration medicament is deposited at the bottom and then a large number of medicament particles are aggregated and agglomerated because the medicament is in a stable state for a long time, and is beneficial to the normal storage of the medicament.
Description
Technical Field
The invention relates to the technical field of ship engineering, in particular to a medicament precipitation prevention system for a desulfurization system and a medicament precipitation monitoring method.
Background
The International Maritime Organization (IMO) officially decides that, starting from the 70 th meeting of the maritime environmental protection committee (MEPC70) at the 1 st meeting of the maritime environmental protection committee (MEPC70), the global vessels for navigation can only use fuel oil with the sulfur content not exceeding 0.5%, and the global operating vessels have to meet the requirement to reduce the sulfur compounds (SO) in the exhaust gasX) And (5) discharging.
The existing countermeasures mainly include adding a waste gas purification system (desulfurization system), using low-sulfur oil fuel, using LNG fuel instead, and the like. Wherein a desulfurization system is additionally arranged, which adopts seawater or NaOH/Mg (OH)2) SO in exhaust gas in cleaning of liquids and the likeXThe emission of the sulfides on the ship is reduced, and the method is an economical option at present. Wherein, Mg (OH) is adopted2The mixed desulfurization system using NaOH alkaline liquor as cleaning agent is a popular desulfurization system at present.
With the system, a Mg (OH) is required to be arranged on the ship2The medicament storage cabin is used for storing and neutralizing acidic SO in the flue gasXComponents, thereby achieving the purpose of circularly washing the smokeDue to Mg (OH)2The medicament is used as a suspension, has high liquid viscosity, is difficult to dissolve in water, is easy to precipitate, and can agglomerate after being deposited at the bottom of the liquid for a long time, thereby influencing the use and maintenance. Referring to fig. 1, fig. 1 is a schematic structural diagram of a chemical storage tank of a desulfurization system in the prior art, as shown in the figure, a conventional chemical storage tank in the prior art is designed only according to a general ship cabin cabinet, and only one simple square cabin 10 is designed, so as to solve the problem of precipitation in a chemical storage process, a mixer is generally configured, and a mixer motor 22 is used to drive a mixer blade 24 to rotate, so as to drive a chemical to circularly flow.
Disclosure of Invention
Based on the above, the invention aims to provide a reagent anti-precipitation system for a desulfurization system, which has the advantages of simple structure, low installation and maintenance cost and good anti-precipitation effect.
A medicament anti-precipitation system for a desulfurization system comprises a storage cabin, a storage cabin inlet pipe, a storage cabin spray pipe and a delivery pump, wherein the storage cabin inlet pipe is communicated with the storage cabin spray pipe, and the delivery pump is arranged on the inlet pipe; the storage cabin inlet pipe comprises a plurality of storage cabin suction ports, the storage cabin spray pipe comprises a plurality of storage cabin spray heads, the storage cabin suction ports and the storage cabin spray heads are arranged in the storage cabin, the storage cabin suction ports are evenly arranged in the bottom of the storage cabin, and the storage cabin spray heads are evenly arranged in the top of the storage cabin.
According to the agent precipitation prevention system for the desulfurization system, provided by the embodiment of the invention, the agent is sucked from the storage cabin suction port arranged at the bottom of the storage cabin through the storage cabin inlet pipe, the storage cabin spray pipe and the delivery pump, is pressurized by the delivery pump and is delivered to the top of the storage cabin, and is sprayed by the storage cabin spray head, so that the circular flow of the agent in the storage cabin is promoted, the phenomenon that a large amount of agent particles are aggregated and agglomerated due to the fact that the agent is in a stable state for a long time and high-concentration agent is deposited at the bottom is avoided, and the normal storage of the agent is facilitated.
The stirring device further comprises a stirring pipe, wherein the stirring pipe comprises a plurality of stirring spray heads, and the plurality of stirring spray heads are uniformly arranged at the bottom of the storage cabin; the stirring pipe, the storage cabin inlet pipe and the storage cabin spray pipe are movably communicated through a three-way conversion valve. Through the setting of stirring shower nozzle, certainly the medicament that the storage bin suction inlet got into can certainly the stirring shower nozzle sprays and goes out to the feasible can be to the medicament of storage cabin bottom stirs, further promotes the flow of liquid, avoids appearing medicament granule aggregation caking, influences the problem of using.
Further, the storage compartment inlet pipe comprises a first storage compartment inlet pipe and a second storage compartment inlet pipe, and the first storage compartment inlet pipe and the second storage compartment inlet pipe both comprise a plurality of storage compartment suction openings; the conveying pump comprises a first conveying pump and a second conveying pump, and the first conveying pump and the second conveying pump are respectively arranged on the first storage cabin inlet pipe and the second storage cabin inlet pipe; the storage cabin shower includes first storage cabin shower and second storage cabin shower, first storage cabin shower and the second storage cabin shower all includes a plurality of storage cabin shower heads, just first storage cabin shower with first storage cabin import pipe is linked together, second storage cabin shower with second storage cabin import pipe is linked together. Through the arrangement, the number of the storage cabin suction ports and the number of the storage cabin spray headers are increased, the liquidity of liquid in the storage cabin is further increased, and meanwhile, the pressurizing and conveying effects are guaranteed by increasing the number of the conveying pumps.
Further, the stirring pipe includes first stirring pipe and second stirring pipe, three-way change-over valve includes first three-way change-over valve and second three-way change-over valve, first stirring pipe first storage cabin import pipe and first storage cabin shower passes through first three-way change-over valve activity intercommunication, the second stirring pipe second storage cabin import pipe and second storage cabin shower passes through second three-way change-over valve activity intercommunication. The arrangement of the first stirring pipe and the second stirring pipe helps to further improve the stirring effect on the liquid at the bottom of the storage tank.
Further, the storage cabin comprises a first cabin area and a second cabin area, and the first conveying pump and the second conveying pump are arranged on the outer side of the side wall of the first cabin area; a storage cabin suction opening of the first storage cabin inlet pipe is arranged in the first cabin area, and a storage cabin spray head of the first storage cabin spray pipe and a stirring spray head of the first stirring pipe are arranged in the second cabin area; and a storage cabin suction opening of the second storage cabin inlet pipe is arranged in the second cabin area, and a storage cabin spray head of the second storage cabin spray pipe and a stirring spray head of the second stirring pipe are arranged in the first cabin area. Through the storage cabin suction of first storage cabin import pipe with the storage cabin shower head of first storage cabin shower the stirring shower nozzle of first agitator pipe, and the storage cabin suction of second storage cabin import pipe with the storage cabin shower head of second storage cabin shower the position subregion setting of the stirring shower nozzle of second agitator pipe can promote the lateral flow of liquid in the storage cabin improves the homogeneity of liquid, avoids appearing because the area of storage cabin is great and then causes the different condition of medicament concentration in different regions.
Further, the device also comprises a maintenance cabin; the maintenance cabin is arranged adjacent to the storage cabin; the storage cabin is characterized in that a communication port is formed in the side wall of the top of the storage cabin in a penetrating mode, and the storage cabin is movably communicated with the maintenance cabin through the communication port. The maintenance cabin is arranged so that when the condition in the storage cabin is maintained and checked, the medicament in the storage cabin can be temporarily transferred into the maintenance cabin, and the transfer operation is convenient.
The system further comprises a maintenance cabin inlet pipe and a maintenance cabin spray pipe, wherein the maintenance cabin inlet pipe comprises a plurality of maintenance cabin suction ports and is communicated with the first storage cabin inlet pipe or/and the second storage cabin inlet pipe; the maintenance cabin spray pipe comprises a plurality of maintenance cabin spray heads and is communicated with the first storage cabin spray pipe or/and the second storage cabin spray pipe. The arrangement of the inlet pipe of the maintenance cabin and the spray pipe of the maintenance cabin enables the liquid in the maintenance cabin to be circulated in a short period in the maintenance process, and avoids medicament precipitation and agglomeration.
Further, the arrangement height of the maintenance cabin spray header is larger than that of the maintenance cabin suction opening, and the circulation flow of the medicament is promoted.
Furthermore, the volume of the maintenance cabin is smaller than that of the storage cabin, so that the requirement of normal maintenance is met, and the space is saved.
According to the agent precipitation prevention system for the desulfurization system, provided by the embodiment of the invention, after being sucked from a storage cabin suction port arranged at the bottom of the storage cabin through the arrangement of the storage cabin inlet pipe, the storage cabin spray pipe and the delivery pump, the agent is pressurized and delivered to the top of the storage cabin through the delivery pump and is sprayed down through the storage cabin spray head, and in a preferred embodiment, the arrangement of the stirring pipe and the stirring spray head is combined, so that the agent in the storage cabin is effectively promoted to flow circularly through the distribution arrangement of the storage cabin inlet pipe, the storage cabin spray pipe and the stirring pipe, the phenomenon that a large amount of agent particles are aggregated and agglomerated due to the fact that the agent is in a stable state for a long time is avoided, and the agent is beneficial to normal storage; and further combine the setting of maintenance cabin for the short-term storage medicament of storage cabin during the maintenance of storage cabin, be convenient for the going on of storage cabin maintenance work, simultaneously through the setting of maintenance cabin import pipe and maintenance cabin shower, also can carry out the circulation operation to the medicament during the short-term storage medicament of maintenance cabin, avoid its appearance to deposit the caking. The agent anti-precipitation system for the desulfurization system can be additionally arranged and modified on the existing ship structure, is simple in structure, low in additional arrangement and modification cost and low in maintenance cost, and can effectively avoid the problem of precipitation and agglomeration of agents in the storage process.
In addition, the embodiment of the invention also provides a reagent precipitation monitoring method for the desulfurization system, wherein the desulfurization system comprises a control device and the reagent precipitation prevention system for the desulfurization system;
the control device is respectively electrically connected with the delivery pump, the storage cabin spray head and the stirring spray head and correspondingly controls the opening and closing of the control device;
the agent anti-precipitation system for the desulfurization system further comprises a sampling branch pipe and a detection device, wherein the sampling branch pipe is communicated with the inlet pipe of the storage cabin and is positioned on the rear side of the delivery pump; the sampling branch pipe is provided with a sampling valve, and the control device is electrically connected with the sampling valve and controls the opening and closing of the sampling valve; the detection device comprises a container and a pressure sensor, the container is communicated with the sampling branch pipe, and the pressure sensor is electrically connected with the control device and used for detecting the weight of the medicament in the container;
the reagent precipitation monitoring method for the desulfurization system comprises the following steps:
s1, presetting working cycle parameters and monitoring parameters of a medicament anti-precipitation system for the desulfurization system of the control device through a program, and inputting the concentration of an initial medicament; the working period parameters comprise the starting and stopping time of the delivery pump, the storage cabin spray head and the stirring spray head; the monitoring parameters comprise the times of the detection devices and detection time intervals; the initial medicament concentration is the concentration of the medicament before storage;
s2, according to the monitoring parameter setting, the control device controls the sampling valve to open in each detection, and discharges a quantitative volume of medicament from the inlet pipe of the storage cabin into the container, the pressure sensor senses the weight of the medicament in the container and transmits a detection signal to the control device;
and S3, the control device receives and processes the detection signal to obtain concentration data of the medicament in the storage cabin, compares the concentration data with the initial medicament concentration, and makes a curve graph of the change of the concentration data along with time.
According to the method for monitoring the reagent precipitation for the desulfurization system, a quantitative volume of the reagent is discharged from the inlet pipe of the storage cabin through the arrangement of the sampling branch pipe and the detection device, the weight of the reagent is detected, the concentration of the reagent can be converted by the control device according to the weight and the volume and the molecular weight of water and the reagent, the concentration condition of the reagent liquid in the storage cabin can be obtained by comparing the concentration with a preset reference concentration value, series of detection data can be further converted into a curve of the reagent concentration changing along with time, whether the reagent liquid in the storage cabin is precipitated or not is judged according to the change of the curve, and the reagent liquid can be visually displayed through the control device, so that the degree of automation is high, and the market demand is met.
For a better understanding and practice, the invention is described in detail below with reference to the accompanying drawings.
Drawings
FIG. 1 is a schematic view of a chemical storage tank of a desulfurization system in the prior art;
FIG. 2 is a schematic structural diagram of the maintenance cabin and the storage cabin according to embodiment 1 of the present invention;
FIG. 3 is a first schematic view of a chemical anti-settling system for a desulfurization system according to embodiment 1 of the present invention;
fig. 4 is a schematic structural diagram of a reagent precipitation prevention system for a desulfurization system according to embodiment 1 of the present invention.
Detailed Description
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
Example 1
Referring to fig. 2 to 4, fig. 2 is a schematic structural view of a maintenance cabin and a storage cabin in embodiment 1 of the present invention, fig. 3 is a schematic structural view of a first chemical anti-precipitation system for a desulfurization system in embodiment 1 of the present invention, and fig. 4 is a schematic structural view of a second chemical anti-precipitation system for a desulfurization system in embodiment 1 of the present invention. The embodiment 1 of the invention provides a pharmaceutical agent anti-precipitation system for a desulfurization system, which comprises a storage cabin 10, a storage cabin inlet pipe 20, a storage cabin spray pipe 30 and a delivery pump 40, wherein the storage cabin inlet pipe 20 is communicated with the storage cabin spray pipe 30, and the delivery pump 40 is arranged on the storage cabin inlet pipe 20; the storage cabin inlet pipe 20 comprises a plurality of storage cabin suction openings 22, the storage cabin spray pipes 30 comprise a plurality of storage cabin spray heads 32, the storage cabin suction openings 22 and the storage cabin spray heads 32 are both arranged in the storage cabin 10, the storage cabin suction openings 22 are evenly arranged at the bottom of the storage cabin 10, and the storage cabin spray heads 32 are evenly arranged at the top of the storage cabin 10.
According to the agent precipitation prevention system for the desulfurization system in the embodiment 1 of the invention, through the arrangement of the storage cabin inlet pipe, the storage cabin spray pipe and the delivery pump, after the agent is sucked from the storage cabin suction port arranged at the bottom of the storage cabin, the agent is pressurized by the delivery pump and delivered to the top of the storage cabin and sprayed by the storage cabin spray head, the circular flow of the agent in the storage cabin is promoted, the phenomenon that a large amount of agent particles are aggregated and agglomerated due to the fact that the agent is in a stable state for a long time and high-concentration agent is deposited at the bottom is avoided, and the normal storage of the agent is facilitated.
As an optional implementation manner, in this embodiment, the agent precipitation prevention system for a desulfurization system further includes a stirring pipe 50, the stirring pipe 50 includes a plurality of stirring nozzles 52, and the plurality of stirring nozzles 52 are uniformly disposed at the bottom of the storage tank 10; the mixing tube 50, the storage compartment inlet tube 20 and the storage compartment shower 30 are in fluid communication through a three-way diverter valve 60. Through the setting of stirring shower nozzle 52, the medicament that gets into from storage compartment import pipe 20 storage compartment suction 22 can spray and go out from stirring shower nozzle 52 to make can stir the medicament of storage compartment 10 bottom, further promote the flow of liquid, avoid appearing the medicament and appear and gather the caking, influence the problem of using.
Specifically, the storage compartment inlet duct 20 comprises a first storage compartment inlet duct 24 and a second storage compartment inlet duct 26, each of the first storage compartment inlet duct 24 and the second storage compartment inlet duct 26 comprising a plurality of storage compartment suction openings 22; the transfer pump 40 comprises a first transfer pump 42 and a second transfer pump 44, wherein the first transfer pump 42 and the second transfer pump 44 are respectively arranged on the first storage compartment inlet pipe 24 and the second storage compartment inlet pipe 26; the storage compartment shower 30 includes a first storage compartment shower 34 and a second storage compartment shower 36, the first storage compartment shower 34 and the second storage compartment shower 36 each include a plurality of storage compartment showerheads 32, the first storage compartment shower 34 is in communication with the first storage compartment inlet pipe 24, and the second storage compartment shower 36 is in communication with the second storage compartment inlet pipe 26. Through the arrangement, the fluidity of the liquid in the storage chamber 10 is further increased by increasing the number of the storage chamber suction ports 22 and the storage chamber spray headers 32, and the pressurizing and conveying effects are ensured by increasing the number of the conveying pumps 40.
The mixing pipe 50 comprises a first mixing pipe 54 and a second mixing pipe 56, the three-way switching valve 60 comprises a first three-way switching valve 62 and a second three-way switching valve 64, the first mixing pipe 54, the first storage compartment inlet pipe 24 and the first storage compartment spray pipe 34 are movably communicated through the first three-way switching valve 62, and the second mixing pipe 56, the second storage compartment inlet pipe 26 and the second storage compartment spray pipe 36 are movably communicated through the second three-way switching valve 64. The arrangement of the first stirring pipe 54 and the second stirring pipe 56 helps to further improve the stirring effect of the liquid at the bottom of the storage tank 10.
As an alternative embodiment, in the present embodiment, the storage tank 10 includes a first tank section 12 and a second tank section 14, and the first transfer pump 42 and the second transfer pump 44 are both disposed outside the side wall of the first tank section 12; the storage compartment suction opening 22 of the first storage compartment inlet pipe 24 is disposed in the first compartment area 12, the storage compartment showerhead 32 of the first storage compartment shower 34 and the agitator showerhead 52 of the first agitator pipe 54 are disposed in the second compartment area 14; the storage compartment suction opening 22 of the second storage compartment inlet pipe 26 is disposed in the second compartment area 14, the storage compartment showerhead 32 of the second storage compartment shower 36 and the agitator showerhead 52 of the second agitator pipe 56 are disposed in the first compartment area 12. Through the storage compartment suction port 22 of the first storage compartment inlet pipe 24, the storage compartment spray head 32 of the first storage compartment spray pipe 34 and the stirring spray head 52 of the first stirring pipe 54, and the storage compartment suction port 22 of the second storage compartment inlet pipe 26, the storage compartment spray head 32 of the second storage compartment spray pipe 36 and the stirring spray head 52 of the second stirring pipe 56, the position partition arrangement can promote the transverse flow of liquid in the storage compartment, improve the uniformity of the liquid, and avoid the occurrence of the situation that the medicament concentration is different in different regions due to the large area of the storage compartment 10.
As an alternative embodiment, in this embodiment, the agent anti-settling system for desulfurization system further includes a maintenance cabin 70; the maintenance compartment 70 is disposed adjacent to the storage compartment 10; the storage compartment 10 has a communication port 16 formed through a top side wall thereof, and the storage compartment 10 is movably communicated with the maintenance compartment 70 through the communication port 16. The maintenance compartment 70 is provided so that the medicine in the storage compartment 10 can be temporarily transferred into the maintenance compartment 70 when the inside condition of the storage compartment 10 is subjected to maintenance inspection, and the transfer operation is convenient.
Further, the chemical anti-settling system for the desulfurization system of the present embodiment further comprises a maintenance chamber inlet pipe 80 and a maintenance chamber spray pipe 90, wherein the maintenance chamber inlet pipe 80 comprises a plurality of maintenance chamber suction ports 82, and is communicated with the first storage chamber inlet pipe 24 or/and the second storage chamber inlet pipe 26; the maintenance compartment shower 90 includes a plurality of maintenance compartment showerheads 92 and is in communication with the first storage compartment shower 34 or/and the second storage compartment shower 36. The arrangement of the maintenance tank inlet pipe 80 and the maintenance tank shower pipe 90 enables short-term circulation of the liquid in the maintenance tank 70 during maintenance, avoiding the precipitation and agglomeration of the agent.
Specifically, the maintenance pod showerhead 92 is positioned at a greater elevation than the maintenance pod suction 82, which helps to promote circulation of the medicament. The volume of the maintenance compartment 70 is smaller than the volume of the storage compartment 10, which meets the requirements of normal maintenance situations and helps to save space.
According to the agent precipitation prevention system for the desulfurization system, provided by the embodiment of the invention, after being sucked from a storage cabin suction port arranged at the bottom of the storage cabin through the arrangement of the storage cabin inlet pipe, the storage cabin spray pipe and the delivery pump, the agent is pressurized and delivered to the top of the storage cabin through the delivery pump and is sprayed down through the storage cabin spray head, and in a preferred embodiment, the arrangement of the stirring pipe and the stirring spray head is combined, so that the agent in the storage cabin is effectively promoted to flow circularly through the distribution arrangement of the storage cabin inlet pipe, the storage cabin spray pipe and the stirring pipe, the phenomenon that a large amount of agent particles are aggregated and agglomerated due to the fact that the agent is in a stable state for a long time is avoided, and the agent is beneficial to normal storage; and further combine the setting of maintenance cabin for the short-term storage medicament of storage cabin during the maintenance of storage cabin, be convenient for the going on of storage cabin maintenance work, simultaneously through the setting of maintenance cabin import pipe and maintenance cabin shower, also can carry out the circulation operation to the medicament during the short-term storage medicament of maintenance cabin, avoid its appearance to deposit the caking. The agent anti-precipitation system for the desulfurization system can be additionally arranged and modified on the existing ship structure, is simple in structure, low in additional arrangement and modification cost and low in maintenance cost, and can effectively avoid the problem of precipitation and agglomeration of agents in the storage process.
Example 2
The embodiment 2 of the invention provides a reagent precipitation monitoring method for a desulfurization system, wherein the desulfurization system comprises a control device and the reagent precipitation prevention system for the desulfurization system.
The control device is respectively electrically connected with the delivery pump, the storage cabin spray head and the stirring spray head and correspondingly controls the opening and closing of the storage cabin spray head and the stirring spray head.
The agent anti-precipitation system for the desulfurization system further comprises a sampling branch pipe and a detection device, wherein the sampling branch pipe is communicated with the inlet pipe of the storage cabin and is positioned on the rear side of the delivery pump; the sampling branch pipe is provided with a sampling valve, and the control device is electrically connected with the sampling valve and controls the opening and closing of the sampling valve; the detection device comprises a container and a pressure sensor, the container is communicated with the sampling branch pipe, and the pressure sensor is electrically connected with the control device and used for detecting the weight of the medicament in the container.
The reagent precipitation monitoring method for the desulfurization system comprises the following steps:
s1, presetting working cycle parameters and monitoring parameters of the chemical anti-precipitation system for the desulfurization system through the program setting of the control device, and inputting the concentration of the initial chemical; the working period parameters comprise the starting and stopping time of the delivery pump, the storage cabin spray head and the stirring spray head; the monitoring parameters comprise the times of the detection devices and detection time intervals; the initial medicament concentration is the concentration of the medicament before storage;
s2, according to the monitoring parameter setting, the control device controls the sampling valve to open in each detection, and discharges a quantitative volume of medicament from the inlet pipe of the storage cabin into the container, the pressure sensor senses the weight of the medicament in the container, and transmits a detection signal to the control device;
and S3, the control device receives and processes the detection signal to obtain concentration data of the medicament in the storage cabin, compares the concentration data with the initial medicament concentration, and makes a curve graph of the change of the concentration data along with time.
According to the method for monitoring the reagent precipitation of the storage cabin of the desulfurization system, through the arrangement of the sampling branch pipe and the detection device, multiple detections are carried out at equal time intervals in the working cycle of a reagent precipitation prevention system for the desulfurization system, a quantitative volume of a reagent is discharged from an inlet pipe of the storage cabin in each detection, the weight of the reagent is detected, the concentration of the reagent can be converted according to the weight and the volume and the molecular weight of water and the reagent by the control device, and the concentration of the reagent is compared with the initial reagent concentration, so that the condition of the reagent liquid in the storage cabin can be obtained; when the concentration data obtained by each detection is not obviously different from the initial medicament concentration or the error is within a preset allowable range, the circulation condition of the medicament liquid in the storage cabin is good and no obvious medicament precipitation condition occurs; furthermore, a series of concentration detection data measured for many times can be converted into a curve of the concentration of the medicament changing along with time, whether the liquid in the storage cabin is precipitated or not is judged according to the change trend of the curve, and the control device can be further provided with a display screen or an external display device to display intuitively; when the change curve shows that the concentration of the medicament is gradually increased along with the time, the change curve indicates that the position of a suction port of the storage cabin, namely the concentration of the medicament at the bottom of the storage cabin is increased, and indicates that the solute of the medicament still gradually sinks to the bottom of the storage cabin and has a tendency of generating sediment or generates a small amount of sediment; when the change curve shows that the concentration of the medicament is gradually reduced along with time, the content of dissolved solute in the surface medicament liquid is reduced, and the medicament at the bottom of the storage cabin is already agglomerated, precipitated and separated; the ascending trend or the descending trend of the change curve shows that the liquid in the storage cabin is poor in circulation, the working strength of the chemical precipitation system for the desulfurization system can be further increased by increasing the number of the storage cabin suction ports, the storage cabin spray heads and the stirring spray heads or increasing the power of a delivery pump or other measures, or related equipment needs to be overhauled to remove faults. The above arrangement and steps are reasonable in design, high in automation degree and capable of meeting market requirements.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention.
Claims (10)
1. A medicine anti-precipitation system for a desulfurization system is characterized in that: the storage cabin inlet pipe is communicated with the storage cabin spray pipe, and the delivery pump is arranged on the inlet pipe; the storage cabin inlet pipe comprises a plurality of storage cabin suction ports, the storage cabin spray pipe comprises a plurality of storage cabin spray heads, the storage cabin suction ports and the storage cabin spray heads are arranged in the storage cabin, the storage cabin suction ports are evenly arranged in the bottom of the storage cabin, and the storage cabin spray heads are evenly arranged in the top of the storage cabin.
2. The system for preventing deposition of chemical agents for desulfurization system according to claim 1, wherein: the stirring pipe comprises a plurality of stirring spray heads, and the stirring spray heads are uniformly arranged at the bottom of the storage cabin; the stirring pipe, the storage cabin inlet pipe and the storage cabin spray pipe are movably communicated through a three-way conversion valve.
3. The system for preventing deposition of chemical agents for desulfurization system according to claim 2, wherein: the storage cabin inlet pipe comprises a first storage cabin inlet pipe and a second storage cabin inlet pipe, and the first storage cabin inlet pipe and the second storage cabin inlet pipe respectively comprise a plurality of storage cabin suction ports; the conveying pump comprises a first conveying pump and a second conveying pump, and the first conveying pump and the second conveying pump are respectively arranged on the first storage cabin inlet pipe and the second storage cabin inlet pipe; the storage cabin shower includes first storage cabin shower and second storage cabin shower, first storage cabin shower and the second storage cabin shower all includes a plurality of storage cabin shower heads, just first storage cabin shower with first storage cabin import pipe is linked together, second storage cabin shower with second storage cabin import pipe is linked together.
4. The system for preventing deposition of chemical agents for desulfurization system according to claim 3, wherein: the stirring pipe includes first stirring pipe and second stirring pipe, three-way change-over valve includes first three-way change-over valve and second three-way change-over valve, first stirring pipe first storage cabin import pipe and first storage cabin shower passes through first three-way change-over valve activity intercommunication, the second stirring pipe second storage cabin import pipe and second storage cabin shower passes through second three-way change-over valve activity intercommunication.
5. The system for preventing deposition of chemical agents for desulfurization system according to claim 4, wherein: the storage cabin comprises a first cabin area and a second cabin area, and the first conveying pump and the second conveying pump are arranged on the outer side of the side wall of the first cabin area; a storage cabin suction opening of the first storage cabin inlet pipe is arranged in the first cabin area, and a storage cabin spray head of the first storage cabin spray pipe and a stirring spray head of the first stirring pipe are arranged in the second cabin area; and a storage cabin suction opening of the second storage cabin inlet pipe is arranged in the second cabin area, and a storage cabin spray head of the second storage cabin spray pipe and a stirring spray head of the second stirring pipe are arranged in the first cabin area.
6. The system for preventing deposition of chemical agents for desulfurization system according to claim 4, wherein: also includes a maintenance cabin; the maintenance cabin is arranged adjacent to the storage cabin; the storage cabin is characterized in that a communication port is formed in the side wall of the top of the storage cabin in a penetrating mode, and the storage cabin is movably communicated with the maintenance cabin through the communication port.
7. The system for preventing deposition of chemical agents for desulfurization system according to claim 6, wherein: the system also comprises a maintenance cabin inlet pipe and a maintenance cabin spray pipe, wherein the maintenance cabin inlet pipe comprises a plurality of maintenance cabin suction ports and is communicated with the first storage cabin inlet pipe or/and the second storage cabin inlet pipe; the maintenance cabin spray pipe comprises a plurality of maintenance cabin spray heads and is communicated with the first storage cabin spray pipe or/and the second storage cabin spray pipe.
8. The system for preventing deposition of chemical agents for desulfurization system according to claim 7, wherein: the setting height of the maintenance cabin spray header is greater than that of the maintenance cabin suction port.
9. The system for preventing deposition of chemical agents for desulfurization system according to claim 6, wherein: the volume of the maintenance cabin is smaller than that of the storage cabin.
10. A reagent precipitation monitoring method for a desulfurization system is characterized by comprising the following steps: the desulfurization system comprises a control device and a reagent precipitation prevention system for the desulfurization system according to any one of claims 2 to 9;
the control device is respectively electrically connected with the delivery pump, the storage cabin spray head and the stirring spray head and correspondingly controls the opening and closing of the control device;
the agent anti-precipitation system for the desulfurization system further comprises a sampling branch pipe and a detection device, wherein the sampling branch pipe is communicated with the inlet pipe of the storage cabin and is positioned on the rear side of the delivery pump; the sampling branch pipe is provided with a sampling valve, and the control device is electrically connected with the sampling valve and controls the opening and closing of the sampling valve; the detection device comprises a container and a pressure sensor, the container is communicated with the sampling branch pipe, and the pressure sensor is electrically connected with the control device and used for detecting the weight of the medicament in the container;
the reagent precipitation monitoring method for the desulfurization system comprises the following steps:
s1, presetting working cycle parameters and monitoring parameters of the chemical anti-precipitation system for the desulfurization system through the program setting of the control device, and inputting the concentration of the initial chemical; the working period parameters comprise the starting and stopping time of the delivery pump, the storage cabin spray head and the stirring spray head; the monitoring parameters comprise the times of the detection devices and detection time intervals; the initial medicament concentration is the concentration of the medicament before storage;
s2, according to the monitoring parameter setting, the control device controls the sampling valve to open in each detection, and discharges a quantitative volume of medicament from the inlet pipe of the storage cabin into the container, the pressure sensor senses the weight of the medicament in the container and transmits a detection signal to the control device;
and S3, the control device receives and processes the detection signal to obtain concentration data of the medicament in the storage cabin, compares the concentration data with the initial medicament concentration, and makes a curve graph of the change of the concentration data along with time.
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