CN113230828A - H2Automatic S waste gas treatment system and method - Google Patents

H2Automatic S waste gas treatment system and method Download PDF

Info

Publication number
CN113230828A
CN113230828A CN202110636063.6A CN202110636063A CN113230828A CN 113230828 A CN113230828 A CN 113230828A CN 202110636063 A CN202110636063 A CN 202110636063A CN 113230828 A CN113230828 A CN 113230828A
Authority
CN
China
Prior art keywords
sodium sulfide
absorption tower
caustic soda
liquid
acid water
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202110636063.6A
Other languages
Chinese (zh)
Inventor
毛艳丽
李山东
王科红
陈虎
宋小虎
马莹
朱昊天
程华花
吴智娟
张雪峰
宋超
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jinchuan Group Co Ltd
Original Assignee
Jinchuan Group Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Jinchuan Group Co Ltd filed Critical Jinchuan Group Co Ltd
Priority to CN202110636063.6A priority Critical patent/CN113230828A/en
Publication of CN113230828A publication Critical patent/CN113230828A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • 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
    • B01D53/14—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 by absorption
    • B01D53/1456—Removing acid components
    • B01D53/1468—Removing hydrogen sulfide
    • 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
    • B01D53/14—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 by absorption
    • B01D53/1406—Multiple stage absorption
    • 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
    • B01D53/14—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 by absorption
    • B01D53/1493—Selection of liquid materials for use as absorbents
    • 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
    • B01D53/14—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 by absorption
    • B01D53/18—Absorbing units; Liquid distributors therefor
    • 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
    • B01D53/30—Controlling by gas-analysis apparatus
    • 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
    • B01D53/346—Controlling the process
    • 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
    • B01D53/52—Hydrogen sulfide
    • 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
    • B01D53/77—Liquid phase processes
    • B01D53/78—Liquid phase processes with gas-liquid contact
    • 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
    • B01D53/96—Regeneration, reactivation or recycling of reactants
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2251/00—Reactants
    • B01D2251/30—Alkali metal compounds
    • B01D2251/304—Alkali metal compounds of sodium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2251/00—Reactants
    • B01D2251/60—Inorganic bases or salts
    • B01D2251/604—Hydroxides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2252/00—Absorbents, i.e. solvents and liquid materials for gas absorption
    • B01D2252/10—Inorganic absorbents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2252/00—Absorbents, i.e. solvents and liquid materials for gas absorption
    • B01D2252/10—Inorganic absorbents
    • B01D2252/103—Water

Abstract

The invention discloses a method for producing H2The automatic treatment system of S waste gas, the device include the acid water absorption tower, the bottom inlet end of acid water absorption tower passes through pipeline and H2And S, connecting gas conveying equipment, and arranging an acid water spray head in the acid water absorption tower. The invention also discloses an H2The automatic S waste gas treating process includes the following stepsThe method comprises the following steps: A. h generated in the sulfurization reaction tank2S gas enters from the lower part of the acid water absorption tower; B. the acidic wastewater is controlled by an automatic valve and a flowmeter on a liquid inlet pipe at the top of the acid water circulating tank; C. the automatic valve and the liquid level meter are interlocked on the liquid inlet pipe at the top of the sodium sulfide circulation tank. The invention can solve the problem of H of the common liquid caustic soda in the industry at present2S waste gas is absorbed to result in H2The S standard-reaching treatment cost is high, meanwhile, the replacement process after the liquid caustic soda absorption reaches the saturation point is manually operated, the automation degree is low, the labor intensity of personnel is high, and the replacement process easily causes H2S exceeds standard.

Description

H2Automatic S waste gas treatment system and method
Technical Field
The invention relates to the technical field of chemical environmental protection and automation control, in particular to H2S waste gas automatic treatment system and method.
Background
A large amount of heavy metal acid wastewater can be generated in the pyrometallurgical production process, the heavy metal ions are precipitated by the sulfuration method mostly for treating the acid wastewater, and H is inevitably generated in the production process2And S gas escapes. Liquid caustic soda (NaOH solution) to H commonly used in the industry at present2S waste gas is absorbed, and H is caused by high market price of liquid caustic soda2S has high standard treatment cost; the liquid caustic soda absorption reaches a saturation point, fresh liquid caustic soda needs to be replenished after replacement, the replacement process is manual operation, the automation degree is low, the labor intensity of personnel is high, and the replacement process easily causes H2And S exceeds the standard.
Disclosure of Invention
Aiming at the technical problem, the invention provides an underground T-shaped fork vehicle guiding device, which aims at the common liquid caustic soda pair H in the industry2S waste gas is absorbed to result in H2The S standard-reaching treatment cost is high, meanwhile, the replacement process after the liquid caustic soda absorption reaches the saturation point is manually operated, the automation degree is low, the labor intensity of personnel is high, and the replacement process easily causes H2S exceeds standard.
In order to achieve the above purpose, the technical scheme of the invention is as follows:
h2The automatic S waste gas treatment system comprises an acid water absorption tower, wherein the bottom air inlet end of the acid water absorption tower passes through a pipeline and an H2S, connecting gas conveying equipment, wherein an acid water spray head is arranged in an acid water absorption tower, the bottom of the acid water absorption tower is connected with a vulcanization reaction tank through an acid water conveying pump, the acid water spray head is connected with an acid water circulating tank through an acid water circulating pump, the top of the acid water absorption tower is connected with the gas inlet end at the bottom of a sodium sulfide absorption tower through a pipeline, a sodium sulfide spray head is arranged in the sodium sulfide absorption tower, the bottom of the sodium sulfide absorption tower is connected with the sodium sulfide circulating tank through a pipeline, the sodium sulfide spray head is connected with the outlet at the bottom of the sodium sulfide circulating tank through a sodium sulfide circulating pump, the top of the sodium sulfide absorption tower is connected with the gas inlet end at the bottom of a liquid caustic soda absorption tower through a pipeline, a liquid caustic soda spray head is arranged in the liquid caustic soda absorption tower, a corrugated water collector is arranged at the upper part of the liquid caustic soda absorption tower, the liquid caustic soda absorption tower is connected with the liquid caustic soda circulating tank through a pipeline, and the liquid caustic soda spray head is connected with the outlet at the bottom of the liquid caustic soda circulating tank through a liquid caustic soda circulating pump, the outlet at the top of the liquid caustic soda absorption tower is connected with an induced draft fan through an exhaust pipe, the output end of the induced draft fan is connected with a low-altitude exhaust pipe, and the exhaust pipe is provided with H2And S, an online analyzer.
And the lower part of the acid water spray head is provided with a high-efficiency uniformly distributed tower tray.
And the lower part of the sodium sulfide spray head is provided with sodium sulfide absorption tower packing.
And the lower part of the liquid caustic soda spray head is provided with liquid caustic soda absorption tower packing.
The height of the air inlet end at the bottom of the acid water absorption tower is lower than that of the efficient uniformly distributed tower trays.
And the gas inlet end at the bottom of the sodium sulfide absorption tower is lower than the position of the bottom of the sodium sulfide absorption tower packing.
And the gas inlet end at the bottom of the liquid caustic soda absorption tower is lower than the bottom of the liquid caustic soda absorption tower packing.
The top of the acid water circulating tank is provided with a liquid inlet pipe, an automatic valve and a flowmeter, and a liquid level meter is arranged in the acid water circulating tank.
The sour water delivery pump is provided with automatic valve and flowmeter on the pipeline that vulcanization reaction tank is connected, sodium sulfide circulation tank top is equipped with feed liquor pipe, automatic valve, be equipped with the level gauge in the sodium sulfide circulation tank, sodium sulfide circulating pump export be provided with first branch pipe with the vulcanization reaction tank links to each other, install automatic valve and flowmeter on the branch pipe, liquid alkali circulation tank top is equipped with feed liquor pipe, automatic valve, be equipped with the level gauge in the liquid alkali circulation tank, be provided with on the liquid alkali circulation pump export the second branch pipe with the sodium sulfide circulation tank links to each other, install the automatic valve on the second branch pipe.
The invention also provides a method for preparing the H2The automatic S waste gas treating process includes the following steps:
A. h generated in the sulfurization reaction tank2S gas enters from the lower part of the acid water absorption tower and passes through the high-efficiency uniformly-distributed tower trays to remove H2S gas is uniformly distributed, acid wastewater in the acid water circulating tank is sent to an acid water spray head by an acid water circulating pump to be sprayed with H from bottom to top2S gas uniform contact, H2S gas is absorbed by heavy metal ions in the acidic wastewater, H2S is initially absorbed by an acid water absorption tower, enters the lower part of a sodium sulfide absorption tower from the top of the acid water absorption tower through a pipeline, sodium sulfide solution from a sodium sulfide circulating tank is sent to a sodium sulfide spray head by a sodium sulfide circulating pump for spraying, and a packing material of the sodium sulfide absorption tower is in gas-liquid two-phase uniform contact for mass transfer process, H2S gas is absorbed, and H is absorbed by sodium sulfide solution2S gas enters the lower part of the liquid caustic soda absorption tower from the top of the sodium sulfide absorption tower through a pipeline, and alkali liquor from the liquid caustic soda circulation tank is sent to a liquid caustic soda spray head by a liquid caustic soda circulation pump to be sprayed and absorbed in the liquid caustic sodaThe tower filler gas-liquid two-phase is uniformly contacted to carry out mass transfer process H2S, absorbing the gas, removing saturated water through a corrugated water collector, and sending the gas into a low-altitude discharge pipe through a draught fan to be discharged after reaching the standard;
B. the acidic waste water is controlled by an automatic valve and a flowmeter on a liquid inlet pipe at the top of the acid water circulating tank, enters the acid water circulating tank at a certain flow rate, and is sprayed to absorb H2Collecting the acidic wastewater after S into the bottom of an acid water absorption tower, conveying the acidic wastewater into a vulcanization reaction tank through an acid water conveying pump for vulcanization reaction, arranging an automatic valve and a flowmeter on an outlet pipeline of the acid water conveying pump, controlling a certain flow, and automatically controlling the supplement and discharge of the acidic wastewater;
C. the automatic valve and the liquid level meter on the liquid inlet pipe at the top of the sodium sulfide circulation tank are interlocked, the sodium sulfide solution is automatically supplemented according to the liquid level in the sodium sulfide circulation tank, and H is sprayed and absorbed2The sodium sulfide solution after S is returned to a sodium sulfide circulation tank through a bottom pipeline of a sodium sulfide absorption tower, a certain flow is controlled by an automatic valve and a flow meter of a first branch pipe at the outlet of a sodium sulfide circulation pump, the sodium sulfide solution is sent into a vulcanization reaction tank to carry out vulcanization reaction with the acidic wastewater discharged from an acid water absorption tower, and the supplement and discharge of the sodium sulfide solution are automatically controlled;
D. the automatic valve on the liquid inlet pipe at the top of the liquid caustic soda circulating tank and the automatic valve of the second branch pipe at the outlet of the liquid caustic soda circulating pump are both connected with the H2S on-line analyzer interlock, H2And when the S on-line analyzer reaches a certain value, the liquid caustic soda absorption liquid is saturated and converted into sodium sulfide, the automatic valve of the second branch pipe at the outlet of the liquid caustic soda circulating pump is opened, the saturated liquid is sent into the sodium sulfide circulating tank to be used as an absorbent, meanwhile, the automatic valve on the liquid inlet pipe of the liquid caustic soda circulating tank is opened, the alkali liquor is supplemented into the liquid caustic soda circulating tank, and the liquid caustic soda supplementation and the discharge are automatically controlled.
The invention has the beneficial effects that: the device comprises an acid water absorption tower, a sodium sulfide absorption tower, an alkali liquor absorption tower, an acid water circulating tank, a sodium sulfide circulating tank, a liquid alkali circulating tank, an acid water circulating pump, an acid water delivery pump, a sodium sulfide circulating pump, a liquid alkali circulating pump, a draught fan, a low-altitude discharge pipe, a high-efficiency uniformly-distributed tower tray, an acid water spray head, a sodium sulfide spray head, sodium sulfide absorption tower filler, a liquid alkali spray head, a liquid alkali absorption tower filler, a corrugated water collector and an H-shaped water collector2S on-line analyzer, using acidic waste water, sodium sulfide and liquid alkali to form H2The three-stage series absorption process for S treatment firstly utilizes heavy metal ions in the acidic wastewater to treat high-concentration H2S gas is primarily absorbed, and then sodium sulfide solution is utilized to carry out H2Further absorbing S gas, and finally absorbing the residual small amount of H by using liquid caustic soda2S; absorbing H by acidic wastewater and sodium sulfide2S, the obtained product enters a reaction tank to remove heavy metals through a vulcanization reaction, so that the acidic wastewater and sodium sulfide are greatly utilized, the liquid caustic soda consumption is reduced, and the treatment cost is reduced; liquid caustic soda as the final safeguard to ensure the final H2S is discharged after reaching the standard; the saturated absorption liquid caustic soda is sent into a sodium sulfide absorption tower circulation tank in a sodium sulfide form for reuse, the saturated absorption liquid of sodium sulfide is sent into a vulcanization reaction tank to be used as a vulcanizing agent, and all materials in the whole process are fully utilized; three absorption towers are provided with independent circulating grooves, the three absorption towers circulate independently and carry out absorption liquid replacement independently according to working conditions, and H in the replacement period is solved2S is easy to exceed the standard; by means of automatic valves, flow meters, and H2S, an on-line analyzer and other automatic control instruments can complete automatic feeding and discharging of three absorption liquids, and automatic unmanned operation is realized; the invention has simple flow, reliable operation, high automation degree and low treatment cost, and realizes H2And S waste gas is economically treated after reaching the standard.
Drawings
FIG. 1 is a schematic process flow diagram of the present invention.
Wherein: 1. an acid water absorption tower; 2. a sodium sulfide absorption tower; 3. an alkali liquor absorption tower; 4. an acid water circulation tank; 5. a sodium sulfide circulation tank; 6. a liquid caustic soda circulation tank; 7. an acid water circulating pump; 8. a sodium sulfide circulating pump; 9. a liquid caustic soda circulating pump; 10. an induced draft fan; 11. a low-altitude drain pipe; 12. efficient uniform distribution of the trays; 13. an acid water spray head; 14. sodium sulfide absorption tower packing; 15. a sodium sulfide spray head; 16. packing of the liquid caustic soda absorption tower; 17. a liquid caustic soda spray head; 18. a corrugated water collector; 19. h2S, an online analyzer; 20. acid water delivery pump.
Detailed Description
As shown in FIG. 1, a H2Automation of S waste gasThe treatment system comprises an acid water absorption tower 1, wherein the bottom air inlet end of the acid water absorption tower 1 passes through a pipeline and an H2S gas conveying equipment is connected, an acid water spray head 13 is arranged in an acid water absorption tower 1, the bottom of the acid water absorption tower 1 is connected with a vulcanization reaction tank through an acid water conveying pump 20, the acid water spray head 13 is connected with an acid water circulating tank 4 through an acid water circulating pump 7, the top of the acid water absorption tower 1 is connected with a gas inlet end at the bottom of a sodium sulfide absorption tower 2 through a pipeline, a sodium sulfide spray head 15 is arranged in the sodium sulfide absorption tower 2, the bottom of the sodium sulfide absorption tower 2 is connected with a sodium sulfide circulating tank 5 through a pipeline, the sodium sulfide spray head 15 is connected with a bottom outlet of the sodium sulfide circulating tank 5 through a sodium sulfide circulating pump 8, the top of the sodium sulfide absorption tower 2 is connected with a gas inlet end at the bottom of a liquid caustic soda absorption tower 3 through a pipeline, a liquid caustic soda spray head 17 is arranged in the liquid caustic soda absorption tower 3, a corrugated water collector 18 is arranged at the upper part of the liquid caustic soda spray head 17, the bottom of the liquid caustic soda absorption tower 3 is connected with a liquid caustic soda circulating tank 6 through a pipeline, the liquid caustic soda spray head 17 is connected with a bottom outlet of the liquid caustic soda circulating tank 6 through a liquid caustic soda circulating pump 9, the outlet at the top of the liquid caustic soda absorption tower 3 is connected with a draught fan 10 through an exhaust pipe, the output end of the draught fan 10 is connected with a low-altitude exhaust pipe 11, and the exhaust pipe is provided with H2S on-line analyzer 19.
As shown in fig. 1, the lower part of the acid water spray head 13 is provided with a highly effective uniform tray 12.
As shown in fig. 1, a sodium sulfide absorption tower packing 14 is arranged below the sodium sulfide spray head 15.
As shown in figure 1, the lower part of the liquid caustic soda spray head 17 is provided with liquid caustic soda absorption tower packing 16.
As shown in fig. 1, the inlet end of the bottom of the acid water absorption tower 1 is lower than the highly effective uniform tray 12.
As shown in fig. 1, the inlet end of the bottom of the sodium sulfide absorption tower 2 is lower than the bottom of the sodium sulfide absorption tower packing 14.
As shown in figure 1, the gas inlet end at the bottom of the liquid caustic soda absorption tower 3 is lower than the bottom of the packing 16 of the liquid caustic soda absorption tower.
As shown in figure 1, the top of the acid water circulating tank 4 is provided with a liquid inlet pipe, an automatic valve and a flowmeter, and a liquid level meter is arranged in the acid water circulating tank 4.
As shown in figure 1, the pipeline that sour water delivery pump 20 and vulcanization reaction tank are connected is provided with automatic valve and flowmeter, 5 tops in sodium sulfide circulating tank are equipped with the feed liquor pipe, the automatic valve, be equipped with the level gauge in the sodium sulfide circulating tank 5, 8 exports of sodium sulfide circulating pump are provided with first branch pipe and link to each other with the vulcanization reaction tank, install automatic valve and flowmeter on the branch pipe, 6 tops in liquid caustic soda circulating tank are equipped with the feed liquor pipe, the automatic valve, be equipped with the level gauge in the liquid caustic soda circulating tank 6, it links to each other with the sodium sulfide circulating tank to be provided with the second branch pipe in the liquid caustic soda circulating pump 9 export, install the automatic valve on the second branch pipe.
The invention also provides a method for preparing the H2The automatic S waste gas treating process includes the following steps:
A. h generated in the sulfurization reaction tank2S gas enters from the lower part of the acid water absorption tower 1 and passes through a high-efficiency uniform distribution tower tray 12 to remove H2S gas is uniformly distributed, acid wastewater in the acid water circulating tank 4 is sent to an acid water spray head 13 by an acid water circulating pump 7 to be sprayed with H from bottom to top2S gas uniform contact, H2S gas is absorbed by heavy metal ions in the acidic wastewater, H2S is primarily absorbed by an acid water absorption tower 1, enters the lower part of a sodium sulfide absorption tower 2 from the top of the acid water absorption tower 1 through a pipeline, sodium sulfide solution from a sodium sulfide circulating tank 5 is sent to a sodium sulfide spray head 15 by a sodium sulfide circulating pump 8 for spraying, and a gas-liquid two-phase uniform contact is carried out on a filler 14 of the sodium sulfide absorption tower for a mass transfer process, H2S gas is absorbed, and H is absorbed by sodium sulfide solution2S gas enters the lower part of the liquid caustic soda absorption tower 3 from the top of the sodium sulfide absorption tower 2 through a pipeline, alkali liquor from the liquid caustic soda circulation tank 6 is sent into a liquid caustic soda spray nozzle 17 by a liquid caustic soda circulation pump 9 for spraying, and a mass transfer process is carried out by gas-liquid two-phase uniform contact of a filler 16 of the liquid caustic soda absorption tower, wherein H is H2S, absorbing the gas, removing saturated water through a corrugated water collector 18, and sending the gas into a low-altitude discharge pipe 11 through a draught fan 10 to be discharged after reaching the standard;
B. the acidic wastewater is controlled by an automatic valve and a flowmeter on a liquid inlet pipe at the top of the acid water circulating tank 4, enters the acid water circulating tank 4 at a certain flow rate, and is sprayed to absorb H2The acidic wastewater after S is converged into the bottom of the acid water absorption tower 1, and is sent into a vulcanization reaction tank for vulcanization reaction through an acid water delivery pump 20, an automatic valve and a flowmeter are arranged on an outlet pipeline of the acid water delivery pump 20 to control a certain flow,the acid wastewater is supplemented and discharged under automatic control;
C. the automatic valve and the liquid level meter on the liquid inlet pipe at the top of the sodium sulfide circulation tank 5 are interlocked, the sodium sulfide solution is automatically supplemented according to the liquid level in the sodium sulfide circulation tank 5, and H is sprayed and absorbed2The sodium sulfide solution after S is returned to a sodium sulfide circulating tank 5 through a pipeline at the bottom of a sodium sulfide absorption tower 2, is controlled to have a certain flow through an automatic valve and a flow meter of a first branch pipe at the outlet of a sodium sulfide circulating pump 8, is sent into a vulcanization reaction tank, and is subjected to vulcanization reaction with the acidic wastewater discharged from an acid water absorption tower 1, and the supplement and discharge of the sodium sulfide solution are automatically controlled;
D. the automatic valve on the liquid inlet pipe at the top of the liquid caustic soda circulating tank 6 and the automatic valve of the second branch pipe at the outlet of the liquid caustic soda circulating pump 9 are both connected with the H2S on-line analyzer 19 interlock, H2When the S on-line analyzer 19 reaches a certain value, the liquid caustic soda absorption liquid is saturated and converted into sodium sulfide, the automatic valve of the second branch pipe at the outlet of the liquid caustic soda circulating pump 9 is opened, the saturated liquid is sent into the sodium sulfide circulating tank 5 to be used as an absorbent, meanwhile, the automatic valve on the liquid inlet pipe of the liquid caustic soda circulating tank 6 is opened, the alkali liquor is supplemented into the liquid caustic soda circulating tank 6, and the liquid caustic soda supplementation and the discharge are automatically controlled.
The process flow is as follows: the acidic wastewater enters an acid water circulating tank 4 at a certain flow rate, is sent into a spray head 13 of an acid water absorption tower 1 through an acid water circulating pump 7, and is sprayed from top to bottom; high concentration of H from the inside of the reaction tank2The S gas enters a high-efficiency uniformly-distributed tray 12 of the acid water absorption tower 1 under the action of a draught fan 10, and H is uniformly distributed2The S gas is in countercurrent contact with the sprayed acidic wastewater, and a large amount of H2The S gas is absorbed and then enters a sodium sulfide absorption tower 2; absorption of H2Sending the acidic wastewater after S into a reaction tank through an acid water delivery pump 20, wherein the water inlet flow in the acid water circulation tank 4 is equal to the outlet flow of the acid water delivery pump 7 so as to maintain the liquid level in the acid water circulation tank 4 to be stable; the sodium sulfide solution in the sodium sulfide circulating tank 5 is conveyed into a spray head 15 of the sodium sulfide absorption tower 2 by a sodium sulfide circulating pump 8, and is uniformly distributed by a filler 14 and H from bottom to top2S gas is uniformly contacted with most of H2S is absorbed by sodium sulfide to generate sodium hydrosulfide; sodium hydrosulfide is sent into the reaction tank through the outlet branch pipe of the sodium sulfide circulating pump 8 to be sulfured with the acidic wastewaterCarrying out chemical reaction, and supplementing a sodium sulfide solution through an automatic valve when the liquid level in the sodium sulfide circulation tank 5 is insufficient; the dilute alkali liquor in the liquid alkali circulating tank 6 is conveyed into a spray head 17 of the liquid alkali absorption tower 3 by a liquid alkali circulating pump 9, and is uniformly distributed by a filler 16 and H from bottom to top2S gas uniform contact, H2S is absorbed by liquid caustic soda; the automatic valve on the liquid inlet pipe of the liquid caustic soda circulating tank 6 and the automatic valve of the outlet branch pipe of the liquid caustic soda circulating pump 9 are both connected with the H2S on-line analyzer 19 interlock, H2S, when the on-line analyzer 19 reaches a certain value, the liquid caustic soda absorption liquid is saturated and converted into sodium sulfide, the automatic valve of the branch pipe at the outlet of the liquid caustic soda circulating pump 9 is opened, the saturated liquid is sent into the sodium sulfide circulating tank 5 to be used as an absorbent, and meanwhile, the automatic valve on the liquid inlet pipe of the liquid caustic soda circulating tank 6 is opened to supplement new alkali liquor into the liquid caustic soda circulating tank 6; the waste gas after the three-stage absorption treatment is treated by a corrugated water collector 18 to remove saturated water, and is sent into a low-altitude discharge pipe 11 through a draught fan 10 to be discharged after reaching the standard.
Example 1
Reacting the above H2The automatic treatment device and method for S waste gas are applied to a certain system, and the working conditions are as follows: exhaust gas quantity 3000 Nm3/h、H2The S concentration is 200-500 ppm, and the specific steps are as follows: adding a 10% sodium sulfide solution into the sodium sulfide circulation tank 5 through an automatic valve, closing the automatic valve after the liquid level of the sodium sulfide circulation tank reaches 2m, and starting a sodium sulfide circulation pump 8; adding 10% alkali liquor into the liquid alkali circulation tank 6 through an automatic valve, closing the automatic valve to start a liquid alkali circulation pump 9 when the liquid level of the liquid alkali circulation tank is 2 m; the acid wastewater has a particle size of 30m3The flow of the acid water enters an acid water circulating tank 4 at a rate of 1.5m, an acid water circulating pump 7 is started, and the acid water is adjusted by a pump 20 with the outlet flow of 30m3The liquid level of the acid water circulation tank 4 is stabilized to about 1.5 m; the induced draft fan 10 is started to drive the high concentration H2S gas is sent into a high-efficiency uniformly-distributed tower tray 12 of the acid water absorption tower 1 to be uniformly distributed, and then reacts with the acid wastewater sprayed by the spray head 13 to absorb H2The acidic wastewater after S is converged into the bottom of the acid water absorption tower 1 and is sent into a reaction tank through an acid water delivery pump 20; h2S waste gas enters a sodium sulfide absorption tower 2 to be in contact reaction with a sodium sulfide solution uniformly distributed by a filler 14, H2S is absorbed again, and the flow of the outlet branch pipe of the sodium sulfide circulating pump 8 is adjusted to be 1.0m3H, willAbsorption of H2Feeding the sodium sulfide after S into a reaction tank, and opening an automatic valve to supplement a sodium sulfide solution when the liquid level of a sodium sulfide circulation tank is lower than 1.5 m; after two-stage absorption, the product contains a small amount of H2The waste gas of S enters a spray head 17 of a liquid caustic soda absorption tower 3 and contacts with the caustic soda evenly distributed by the filler 16, H2S is absorbed and then discharged through a low-altitude discharge pipe 11; in normal operation, H2S, the value of an online analyzer 19 is in the range of 0-15 ppm, when the value reaches 15ppm, liquid caustic soda is saturated and converted into sodium sulfide, an automatic valve of a branch pipe at the outlet of a liquid caustic soda circulating pump 9 is opened, saturated liquid is sent into a sodium sulfide circulating tank 5 to be used as an absorbent, meanwhile, an automatic valve on a liquid inlet pipe of a liquid caustic soda circulating tank 6 is opened, and new alkali liquor is supplemented into the liquid caustic soda circulating tank 6; h discharged in the whole process2S concentration through H2The S on-line analyzer 19 monitors in real time and reaches the standard all the time.
Example 2
The same as example 1, the above-mentioned H2S waste gas automatic treatment device and method applied to another H2The system with higher S concentration and the working condition are as follows: exhaust gas amount 7000 Nm3/h、H2The S concentration is 600-900 ppm, and the method comprises the following specific steps: adding a 15% sodium sulfide solution into the sodium sulfide circulation tank 5 through an automatic valve, closing the automatic valve to start a sodium sulfide circulation pump 8 after the liquid level of the sodium sulfide circulation tank reaches 2 m; 15% alkali liquor is added into the liquid caustic soda circulating tank 6 through an automatic valve, and the automatic valve is closed to start a liquid caustic soda circulating pump 9 when the liquid level of the liquid caustic soda circulating tank is 2 m; acid wastewater with a particle size of 50m3The flow of the acid water enters an acid water circulating tank 4 at a rate of 50m, a acid water circulating pump 7 is started when the liquid level reaches 1.5m, and the outlet flow of an acid water delivery pump 20 is adjusted to be 50m3The liquid level of the acid water circulation tank 4 is stabilized to about 1.5 m; the induced draft fan 10 is started to drive the high concentration H2S gas is sent into a high-efficiency uniformly-distributed tower tray 12 of the acid water absorption tower 1 to be uniformly distributed, and then reacts with the acid wastewater sprayed by the spray head 13 to absorb H2Sending the acidic wastewater after S into a reaction tank through an acid water delivery pump 20; h2S waste gas enters a sodium sulfide absorption tower 2 to be in contact reaction with a sodium sulfide solution uniformly distributed by a filler 14, H2S is absorbed again, and the flow of the outlet branch pipe of the sodium sulfide circulating pump 8 is adjusted to be 1.4m3H will absorb H2The sodium sulfide after S is sent into a reaction tank,when the liquid level of the sodium sulfide circulation tank is lower than 1.5m, an automatic valve is opened to supplement the sodium sulfide solution; after two-stage absorption, the product contains a small amount of H2The waste gas of S enters a spray head 17 of a liquid caustic soda absorption tower 3 and contacts with the caustic soda evenly distributed by the filler 16, H2S is absorbed and then discharged through a low-altitude discharge pipe 11; in normal operation, H2S, the value of an online analyzer 19 is in the range of 0-20 ppm, when the value reaches 20ppm, liquid caustic soda is saturated and converted into sodium sulfide, an automatic valve of a branch pipe at the outlet of a liquid caustic soda circulating pump 9 is opened, saturated liquid is sent into a sodium sulfide circulating tank 5 to be used as an absorbent, meanwhile, an automatic valve on a liquid inlet pipe of a liquid caustic soda circulating tank 6 is opened, and new alkali liquor is supplemented into the liquid caustic soda circulating tank 6; h discharged in the whole process2S concentration through H2S on-line analyzer 19 real-time monitoring and full time standard reaching
The technical solution provided by the present invention is described in detail above. The present invention has been described herein with the aid of specific principles and embodiments, and the foregoing description of the embodiments is merely intended to facilitate the understanding of the structure and spirit of the present invention. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.

Claims (10)

1. H2S waste gas' S automatic treatment system, its characterized in that: comprises an acid water absorption tower (1), wherein the bottom gas inlet end of the acid water absorption tower (1) is communicated with H through a pipeline2S gas conveying equipment is connected, be equipped with sour water shower nozzle (13) in sour water absorption tower (1), the bottom of sour water absorption tower (1) is passed through sour water delivery pump (20) and is connected with the vulcanization reaction tank, sour water shower nozzle (13) are connected with sour water circulating tank (4) through sour water circulating pump (7), sour water absorption tower (1) top is passed through the pipeline and is connected with sodium sulfide absorption tower (2) bottom inlet end, be equipped with sodium sulfide shower nozzle (15) in sodium sulfide absorption tower (2), the bottom of sodium sulfide absorption tower (2) is passed through the pipeline and is connected with sodium sulfide circulating tank (5), sodium sulfide shower nozzle (15) through sodium sulfide circulating pump (8) with the sulphurBottom exit linkage of changing sodium circulation groove (5), sodium sulfide absorption tower (2) top is passed through the pipeline and is connected with liquid caustic soda absorption tower (3) bottom inlet end, be equipped with liquid caustic soda shower nozzle (17) in liquid caustic soda absorption tower (3), liquid caustic soda shower nozzle (17) upper portion sets up ripple and receives hydrophone (18), liquid caustic soda absorption tower (3) bottom is passed through the pipeline and is connected with liquid caustic soda circulation groove (6), liquid caustic soda shower nozzle (17) through liquid caustic soda circulating pump (9) with the bottom exit linkage of liquid caustic soda circulation groove (6), liquid caustic soda absorption tower (3) top export is passed through the blast pipe and is connected with draught fan (10), low empty discharge pipe (11) is connected to the output of draught fan (10), be provided with H on the blast pipe2S on-line analyzer (19).
2. A process according to claim 1, comprising2S waste gas' S automatic treatment system, its characterized in that: the lower part of the acid water spray head (13) is provided with a high-efficiency uniformly distributed tray (12).
3. A process according to claim 2, comprising2S waste gas' S automatic treatment system, its characterized in that: and the lower part of the sodium sulfide spray head (15) is provided with sodium sulfide absorption tower packing (14).
4. A process according to claim 3, H2S waste gas' S automatic treatment system, its characterized in that: and the lower part of the liquid caustic soda spray head (17) is provided with liquid caustic soda absorption tower packing (16).
5. H according to claim 42S waste gas' S automatic treatment system, its characterized in that: the height of the air inlet end at the bottom of the acid water absorption tower (1) is lower than that of the efficient uniform distribution tower tray (12).
6. H according to claim 52S waste gas' S automatic treatment system, its characterized in that: the air inlet end at the bottom of the sodium sulfide absorption tower (2) is lower than the bottom of the sodium sulfide absorption tower packing (14).
7. H according to claim 62S waste gas' S automatic treatment system, its characterized in that: the gas inlet end at the bottom of the liquid caustic soda absorption tower (3) is lower than the bottom of the liquid caustic soda absorption tower packing (16).
8. A process according to claim 7, comprising2S waste gas' S automatic treatment system, its characterized in that: the top of the acid water circulating tank (4) is provided with a liquid inlet pipe, an automatic valve and a flowmeter, and a liquid level meter is arranged in the acid water circulating tank (4).
9. H according to claim 82S waste gas' S automatic treatment system, its characterized in that: be provided with automatic valve and flowmeter on the pipeline that sour water delivery pump (20) and vulcanization reaction tank are connected, sodium sulfide circulation tank (5) top is equipped with feed liquor pipe, automatic valve, be equipped with the level gauge in sodium sulfide circulation tank (5), sodium sulfide circulating pump (8) export be provided with first spinal branch pipe with the vulcanization reaction tank links to each other, install automatic valve and flowmeter on the spinal branch pipe, liquid alkali circulation tank (6) top is equipped with feed liquor pipe, automatic valve, be equipped with the level gauge in liquid alkali circulation tank (6), be provided with the second branch pipe in liquid alkali circulating pump (9) export with the sodium sulfide circulation tank links to each other, install the automatic valve on the second branch pipe.
10. Use of a H according to claim 92H of S waste gas automatic treatment system2The automatic treatment method of S waste gas is characterized by comprising the following steps: the method comprises the following steps:
A. h generated in the sulfurization reaction tank2S gas enters from the lower part of the acid water absorption tower (1) and passes through the high-efficiency uniform distribution tower tray (12) to remove H2S gas is uniformly distributed, acid wastewater in the acid water circulating tank (4) is sent to an acid water spray nozzle (13) by an acid water circulating pump (7) to be sprayed with H from bottom to top2S gas uniform contact, H2S gas is absorbed by heavy metal ions in the acidic wastewater, H2S is absorbed by acid waterAfter the tower (1) primarily absorbs the sodium sulfide, the sodium sulfide solution from the top of the acid water absorption tower (1) enters the lower part of the sodium sulfide absorption tower (2) through a pipeline, the sodium sulfide solution from the sodium sulfide circulating tank (5) is sent into a sodium sulfide spray head (15) by a sodium sulfide circulating pump (8) to be sprayed, the packing (14) of the sodium sulfide absorption tower is uniformly contacted with gas and liquid phases to carry out a mass transfer process, and H2S gas is absorbed, and H is absorbed by sodium sulfide solution2S gas enters the lower part of the liquid caustic soda absorption tower (3) from the top of the sodium sulfide absorption tower (2) through a pipeline, alkali liquor from the liquid caustic soda circulation tank (6) is sent into a liquid caustic soda spray nozzle (17) by a liquid caustic soda circulation pump (9) for spraying, gas-liquid two phases are uniformly contacted in a filler (16) of the liquid caustic soda absorption tower for a mass transfer process, H gas2S gas is absorbed, saturated water is removed through a corrugated water collector (18), and the gas is sent into a low-altitude discharge pipe (11) through a draught fan (10) to be discharged after reaching the standard;
B. the acidic wastewater is controlled by an automatic valve and a flowmeter on a liquid inlet pipe at the top of the acid water circulating tank (4) to enter the acid water circulating tank (4) at a certain flow rate, and is sprayed to absorb H2The acidic wastewater after S is converged into the bottom of an acid water absorption tower (1), and is sent into a vulcanization reaction tank for vulcanization reaction through an acid water delivery pump (20), an automatic valve and a flowmeter are arranged on an outlet pipeline of the acid water delivery pump (20) to control a certain flow, and the supplement and discharge of the acidic wastewater are automatically controlled;
C. the automatic valve and the liquid level meter on the liquid inlet pipe at the top of the sodium sulfide circulation tank (5) are interlocked, sodium sulfide solution is automatically supplemented according to the liquid level in the sodium sulfide circulation tank (5), and H is sprayed and absorbed2The sodium sulfide solution after S is returned to a sodium sulfide circulation tank (5) through a pipeline at the bottom of a sodium sulfide absorption tower (2), a certain flow is controlled through an automatic valve and a flow meter of a first branch pipe at the outlet of a sodium sulfide circulation pump (8) and sent into a vulcanization reaction tank, the sodium sulfide solution is subjected to vulcanization reaction with acidic wastewater discharged from an acid water absorption tower (1), and the supplement and discharge of the sodium sulfide solution are automatically controlled;
D. the automatic valve on the liquid inlet pipe at the top of the liquid caustic soda circulating tank (6) and the automatic valve of the second branch pipe at the outlet of the liquid caustic soda circulating pump (9) are both connected with the H2S on-line analyzer (19) interlocked, H2When the S on-line analyzer (19) reaches a certain valueAnd the saturated liquid caustic soda absorption liquid is converted into sodium sulfide after saturation, a second branch pipe automatic valve at the outlet of a liquid caustic soda circulating pump (9) is opened, saturated liquid is sent into a sodium sulfide circulating tank (5) to be used as an absorbent, meanwhile, the automatic valve on a liquid inlet pipe of the liquid caustic soda circulating tank (6) is opened, alkali liquor is supplemented into the liquid caustic soda circulating tank (6), and the liquid caustic soda supplementation and the liquid caustic discharge are automatically controlled.
CN202110636063.6A 2021-06-08 2021-06-08 H2Automatic S waste gas treatment system and method Pending CN113230828A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110636063.6A CN113230828A (en) 2021-06-08 2021-06-08 H2Automatic S waste gas treatment system and method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110636063.6A CN113230828A (en) 2021-06-08 2021-06-08 H2Automatic S waste gas treatment system and method

Publications (1)

Publication Number Publication Date
CN113230828A true CN113230828A (en) 2021-08-10

Family

ID=77137408

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110636063.6A Pending CN113230828A (en) 2021-06-08 2021-06-08 H2Automatic S waste gas treatment system and method

Country Status (1)

Country Link
CN (1) CN113230828A (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7401436A (en) * 1973-02-02 1974-08-06
DE10119991A1 (en) * 2001-04-23 2002-10-24 Stephan Pieper Purification of biogas containing hydrogen sulfide and ammonia, removes hydrogen sulfide at least partially by absorption into alkaline wash solution
CN104474864A (en) * 2014-11-14 2015-04-01 江西铜业股份有限公司 New hydrogen sulfide absorption system
CN107162281A (en) * 2017-07-21 2017-09-15 甘肃中顺石化工程装备有限公司 The processing method and Waste Water Treatment of heavy metal ion in a kind of removal smelting wastewater
CN107399854A (en) * 2017-08-25 2017-11-28 金川集团股份有限公司 The system and method for heavy metal and arsenic in a kind of removing metallurgical off-gas acid-making acid waste water

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7401436A (en) * 1973-02-02 1974-08-06
DE10119991A1 (en) * 2001-04-23 2002-10-24 Stephan Pieper Purification of biogas containing hydrogen sulfide and ammonia, removes hydrogen sulfide at least partially by absorption into alkaline wash solution
CN104474864A (en) * 2014-11-14 2015-04-01 江西铜业股份有限公司 New hydrogen sulfide absorption system
CN107162281A (en) * 2017-07-21 2017-09-15 甘肃中顺石化工程装备有限公司 The processing method and Waste Water Treatment of heavy metal ion in a kind of removal smelting wastewater
CN107399854A (en) * 2017-08-25 2017-11-28 金川集团股份有限公司 The system and method for heavy metal and arsenic in a kind of removing metallurgical off-gas acid-making acid waste water

Similar Documents

Publication Publication Date Title
CN201026440Y (en) Absorption, oxidation, concentration combined desulfurizing tower
CN107694293A (en) A kind of hypergravity ammonia removal device and ammonia-removal method
CN201912877U (en) System for processing medical waste incineration tail gas containing high concentration hydrogen chloride
CN112206641A (en) Single-tower multistage circulating ammonia/ammonium sulfate method for flue gas desulfurization
CN206381832U (en) Integral biological desulfurizer
CN215086121U (en) Coke oven gas ammonia process desulfurization regeneration tail gas processing system
CN201669043U (en) Ammonia flue gas desulfurization device
CN103801185B (en) Metallic fume treatment and purification system
CN104226102B (en) A kind of aluminium electrolytic flue horizontal spraying desulfurizer and method
CN113230828A (en) H2Automatic S waste gas treatment system and method
CN112263898A (en) Integral treatment device for sodium-calcium wet desulphurization, circulation, regeneration and precipitation
CN201441880U (en) Treatment device for nitrogen oxide waste gas containing acid gas
CN201912882U (en) Horizontal type half cross flow padding desulfurization washer
CN110665336A (en) Liquid-phase flue gas denitration and absorption liquid regeneration integrated method and device
CN205815459U (en) A kind of flue gas desulfurization by magnesia wet method system
CN201249101Y (en) Two-stage parallel spray thionizer
CN201543374U (en) Ammonia-method flue gas desulfurization device
CN201543375U (en) Amino flue gas desulfuration device
CN201543377U (en) Amino flue gas desulfurization device
CN206676204U (en) A kind of new sulfuric acid exhaust gas processing device using hydrogen peroxide desulfurization
CN112159017A (en) Device and method for treating and comprehensively utilizing small-particle oil shale retorting wastewater
CN108126495A (en) A kind of hydrogen sulfide absorption tower
CN113413753A (en) High-sulfur coal single-tower spray layer pH value layered control device and use method
CN100425324C (en) Top-push decreasing gas desulfurization at normal-pressure and apparatus thereof
CN210543844U (en) Waste gas purification device for non-ferrous metal production line

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
RJ01 Rejection of invention patent application after publication
RJ01 Rejection of invention patent application after publication

Application publication date: 20210810