CN111514727A - Recovery device and method for acid tail gas emission of workshop - Google Patents
Recovery device and method for acid tail gas emission of workshop Download PDFInfo
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- CN111514727A CN111514727A CN202010283508.2A CN202010283508A CN111514727A CN 111514727 A CN111514727 A CN 111514727A CN 202010283508 A CN202010283508 A CN 202010283508A CN 111514727 A CN111514727 A CN 111514727A
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- 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
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- 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
- B01D53/02—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 adsorption, e.g. preparative gas chromatography
- B01D53/04—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 adsorption, e.g. preparative gas chromatography with stationary adsorbents
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- 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
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- 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
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- 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
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- 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
- B01D53/75—Multi-step processes
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- 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
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B17/00—Sulfur; Compounds thereof
- C01B17/02—Preparation of sulfur; Purification
- C01B17/0253—Preparation of sulfur; Purification from non-gaseous sulfur compounds other than sulfides or materials containing such sulfides
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Abstract
The invention relates to a recovery device for acid tail gas emission of a workshop, which comprises a first liquid storage tank (1), a first liquid storage pump (2), a desulfurization tower (3), a second liquid storage tank (5), a second liquid storage pump (6), a regeneration tank (7) and a spray tower (9) which are sequentially connected, wherein a first recovery port (72) below the regeneration tank (7) is connected with a first recovery tank (8), a return port (73) is connected with the first liquid storage tank (1), an ammonia water sprayer (9 a) and an active carbon adsorption plate (9 c) are arranged at the upper part of the spray tower (9), a second recovery tank (9 b) is arranged at the lower part of the spray tower (9), a vent (93) is arranged at the top part of the spray tower, and two adjacent active carbon adsorption plates (9 c) are arranged in a stacking and staggered mode. The invention has the advantages of improving the quality and efficiency of tail gas treatment, avoiding air pollution, recycling the products in the reaction, saving energy and protecting environment.
Description
Technical Field
The invention relates to the technical field of workshop tail gas emission treatment, in particular to a recovery device and a recovery method for acid workshop tail gas emission.
Background
At present, in the chemical industry, various chemical substances are reacted to produce various required products, but the final exhaust tail gas generally contains more H2S、SO2And the like, and the gases are directly discharged into the atmosphere without being treated, which is undoubtedly pollution to the air.
In general, for the treatment of acid tail gas, a mode of spraying an alkaline solution is adopted to remove acid gas, and then emptying treatment is performed, however, the mode cannot be recycled, the cost is high, and valuable substances in the acid gas cannot be effectively recovered, so that resource waste is caused; in addition, when the solution is absorbed incompletely, part of the acidic tail gas is directly discharged, and the atmosphere is polluted to a certain degree.
Disclosure of Invention
The invention aims to solve the problems that the existing workshop acidic tail gas emission treatment device cannot be recycled and treated thoroughly, and provides the recovery device for the workshop acidic tail gas emission, which not only can fully and thoroughly purify the discharged gas and avoid polluting the atmosphere, but also can recycle part of substances of the acidic gas, thereby saving the energy and protecting the environment.
In order to achieve the purpose, the invention adopts the following technical scheme:
a recovery device for acid tail gas emission of a workshop comprises a first liquid storage tank, wherein the first liquid storage tank is connected with the upper part of a desulfurizing tower through a first liquid storage pump, the upper part of the desulfurizing tower is provided with an atomizer, the middle part of the desulfurizing tower is provided with an air inlet, the bottom of the desulfurizing tower is provided with a liquid outlet, the liquid outlet of the desulfurizing tower is connected with a second liquid storage tank through a pipeline, the outlet of the second liquid storage tank is connected with the top of a regeneration tank through a second liquid storage pump, the top of the regeneration tank is provided with an ejector, the lower part of the regeneration tank is provided with a first recovery port, the;
the first recovery port of the regeneration tank is connected with a first recovery tank for recovering elemental sulfur through a pipeline, the reflux port of the regeneration tank is connected with the first liquid storage tank through a pipeline, a reflux valve is arranged on the pipeline between the first recovery port and the first liquid storage tank, and the gas lifting port of the regeneration tank is connected with the middle part of a spray tower through a pipeline;
the upper part of the spray tower is provided with an ammonia water sprayer, the lower part of the spray tower is provided with a second recovery tank for recovering liquid, and the spray tower which is right opposite to the second recovery tank is provided with a second recovery port for conveying the liquid in the second recovery tank to the production flow for reuse;
a set of active carbon adsorption board is connected to the top of spray column, and the top of aqueous ammonia spray thrower is located to the active carbon adsorption board, and range upon range of crisscross setting between two adjacent active carbon adsorption boards, and the top of spray column is equipped with the drain.
Further, a pipeline between the desulfurization tower and the second liquid storage tank is set to be a U-shaped pipeline.
Furthermore, a recovery valve is arranged on the second recovery port.
Further, a rain shade is connected to the top of the spray tower.
In order to further achieve the purpose of the invention, the invention also provides a method for recovering acid tail gas emission in a workshop, the device comprises a first liquid storage tank, a desulfurizing tower, a second liquid storage tank, a regeneration tank and a spray tower, and the method comprises the following specific steps:
(1) tail gas discharged from a workshop enters the desulfurizing tower through an air inlet in the middle of the desulfurizing tower, meanwhile, a first liquid storage pump pumps alkaline solution in a first liquid storage tank into an atomizer on the upper part of the desulfurizing tower, the alkaline solution is sprayed downwards and is in reverse contact with the tail gas, and the solution falls down after being absorbed and is discharged from a liquid outlet at the bottom;
(2) the solution absorbing the acid gas is discharged into a second liquid storage tank through a U-shaped pipeline and is pumped into an ejector at the top of the regeneration tank through a second liquid storage pump, and during the ejection process, the hydrogen sulfide ions in the solution are contacted with oxygen in the air to generate oxidation reaction to generate elemental sulfur which falls into the lower part of the regeneration tank;
(3) floating the reacted elemental sulfur out of the liquid surface in the form of sulfur foam, then overflowing the elemental sulfur into a first recovery tank, melting the sulfur to obtain industrial sulfur, and reflowing the solution without the sulfur foam into a first liquid storage tank for continuous recycling;
(4) small amount of S produced in the side reaction of the oxidation reaction2The O gas is discharged into a spray tower through a gas lifting port at the top of the regeneration tank, an ammonia water sprayer at the upper part of the spray tower sprays downwards to be contacted with the gas, the generated ammonium bisulfite solution falls into a second recovery tank at the bottom of the spray tower, and then the ammonium bisulfite solution is sent to a part required in chemical production through a second recovery port;
(5) the gas purified by ammonia water upwards passes through a bent shell pass formed by activated carbon adsorption plates, is further adsorbed by activated carbon and is discharged from a vent at the top.
According to the technical scheme, acidic tail gas discharged from a workshop is effectively purified through layer-by-layer reaction and filtration, the quality and efficiency of tail gas treatment are improved, and meanwhile, byproducts generated in the reaction are recycled, so that resources are saved, and the cost is reduced.
Drawings
FIG. 1 is a schematic structural diagram of a recovery device for acid tail gas emission of a workshop according to the present invention.
Detailed Description
Example 1
In order to make the present invention more clear, the following description of the recycling apparatus and method for acid tail gas emissions from a plant according to the present invention is made with reference to the accompanying drawings, and the specific embodiments described herein are only for the purpose of illustrating the present invention and are not intended to limit the present invention.
As shown in fig. 1, a recovery unit for acid tail gas emission in workshop, includes first reservoir 1, and first reservoir pump 2 is connected to the export 11 of first reservoir 1, and first reservoir pump 2 passes through the pipeline and links to each other with the upper portion import 31 of a desulfurizing tower 3, and the upper portion of desulfurizing tower 3 is equipped with atomizer 3a, the middle part is equipped with air inlet 32, the bottom is equipped with liquid outlet 33, its characterized in that:
the liquid outlet 33 of the desulfurizing tower 3 is connected with the inlet 51 of a second liquid storage tank 5 through a U-shaped pipeline 4;
the outlet 52 of the second liquid storage tank 5 is connected with a second liquid storage pump 6, and the second liquid storage pump 6 is connected with the top inlet 71 of a regeneration tank 7 through a pipeline;
the top of the regeneration tank 7 is provided with an ejector 7a, the lower part of the regeneration tank is provided with a first recovery port 72, the bottom of the regeneration tank is provided with a return port 73, and the top of the regeneration tank is provided with an air lifting port 74;
the first recovery port 72 of the regeneration tank 7 is connected with a first recovery tank 8 through a pipeline for recovering elemental sulfur;
the return port 73 of the regeneration tank 7 is connected with the inlet 12 of the first liquid storage tank 1 through a pipeline, and a return valve 7b is arranged on the pipeline between the return port and the inlet 12;
the air lift port 74 of the regeneration tank 7 is connected with a middle inlet 91 of a spray tower 9 through a pipeline;
an ammonia water sprayer 9a is arranged at the upper part of the spray tower 9, and a second recovery tank 9b is arranged at the lower part of the spray tower 9 and is used for recovering the ammonium bisulfite solution;
a second recovery port 92 is arranged on the spray tower 9 which is right opposite to the second recovery groove 9b, and a recovery valve 9e is arranged on the second recovery port 92 for conveying the liquid in the second recovery groove to the production flow for reuse;
a group of activated carbon adsorption plates 9c are connected above the spray tower 9, the activated carbon adsorption plates 9c are arranged above the ammonia water sprayer 9a, two adjacent activated carbon adsorption plates 9c are arranged in a stacked and staggered manner, a vent 93 is arranged at the top of the spray tower 9, and a rain shade 9d is connected on the vent 93.
The method for recovering the tail gas emission by using the device is characterized by comprising the following steps:
(1) tail gas discharged from a workshop enters the desulfurizing tower 3 through an air inlet 32 in the middle of the desulfurizing tower 3, meanwhile, the first liquid storage pump 2 pumps alkaline solution in the first liquid storage tank 1 into an atomizer 3a at the upper part of the desulfurizing tower 3, the alkaline solution is sprayed downwards and contacts with the tail gas in the reverse direction, and the solution falls down after being absorbed and is discharged from a liquid outlet 33 at the bottom;
(2) the solution absorbing the acid gas is discharged into a second liquid storage tank 5 through a U-shaped pipeline 4 and is pumped into an ejector 7a at the top of a regeneration tank 7 through a second liquid storage pump 6, and in the ejection process, the hydrogen sulfide ions in the solution are contacted with oxygen in the air to generate oxidation reaction to generate elemental sulfur, and the elemental sulfur falls into the lower part of the regeneration tank 7;
(3) the reacted elemental sulfur floats out of the liquid surface in the form of sulfur foam and overflows to the first recovery tank 8, then industrial sulfur is obtained through sulfur melting, and the solution from which the sulfur foam is removed flows back to the first liquid storage tank 1 through the reflux port 73 to be recycled;
(4) small amount of S produced in the side reaction of the oxidation reaction2The O gas is discharged into the spray tower 9 through the gas lifting port 74 at the top of the regeneration tank 7, the ammonia water sprayer 9a at the upper part of the spray tower 9 sprays downwards to contact with the gas, the generated ammonium bisulfite solution falls into the second recovery tank 9b at the bottom of the spray tower, and then the ammonium bisulfite solution is sent to the part required in the chemical production through the second recovery port 92;
(5) the gas purified by ammonia water passes upwards through a bent shell pass formed by the activated carbon adsorption plate 9c, is further adsorbed by activated carbon and is discharged from a vent 93 at the top.
According to the invention, through layer-by-layer reaction and filtration, acidic tail gas discharged from a workshop is effectively purified, the quality and efficiency of tail gas treatment are improved, and meanwhile, byproducts generated in the reaction are recycled, so that resources are saved, and the cost is reduced.
In addition to the above embodiments, the present invention may have other embodiments. All technical solutions formed by adopting equivalent substitutions or equivalent transformations fall within the protection scope of the claims of the present invention.
Claims (5)
1. The utility model provides a recovery unit for workshop acid tail gas emission, includes first reservoir (1), and first reservoir (1) links to each other with a desulfurizing tower (3) through first stock solution pump (2), and the upper portion of desulfurizing tower (3) is equipped with atomizer (3 a), the middle part is equipped with air inlet (32), the bottom is equipped with liquid outlet (33), its characterized in that:
a liquid outlet (33) of the desulfurizing tower (3) is connected with a second liquid storage tank (5), an outlet of the second liquid storage tank (5) is connected with a regeneration tank (7) through a second liquid storage pump (6), the top of the regeneration tank (7) is provided with an ejector (7 a), a first return port (72) is arranged below the regeneration tank, the bottom of the regeneration tank is provided with a return port (73), and the top of the regeneration tank is provided with an air lifting port (74);
a first recovery port (72) of the regeneration tank (7) is connected with a first recovery tank (8), a return port (73) of the regeneration tank (7) is connected with the first liquid storage tank (1), a return valve (7 b) is arranged on a pipeline between the first recovery port and the first liquid storage tank, and a gas lifting port (74) of the regeneration tank (7) is connected with the middle part of a spray tower (9);
an ammonia water sprayer (9 a) is arranged at the upper part of the spray tower (9), a second recovery tank (9 b) is arranged at the lower part of the spray tower (9), and a second recovery port (92) is arranged on the spray tower (9) which is right opposite to the second recovery tank (9 b);
a group of active carbon adsorption plates (9 c) are connected above the spray tower (9), the active carbon adsorption plates (9 c) are arranged above the ammonia water sprayer (9 a), two adjacent active carbon adsorption plates (9 c) are stacked and staggered, and a vent (93) is arranged at the top of the spray tower (9).
2. The recovery plant for plant acid off-gas emissions according to claim 1, characterized in that:
the pipeline between the desulfurizing tower (3) and the second liquid storage tank (5) is a U-shaped pipeline (4).
3. The recovery plant for plant acid off-gas emissions according to claim 1 or 2, characterized in that:
a second recovery port (92) of the spray tower (9) is provided with a recovery valve (9 e).
4. The recovery plant for plant acid off-gas emissions according to claim 1 or 2, characterized in that:
the top of the spray tower (9) is connected with a rain shade (9 d).
5. A method for recovering acid tail gas emissions from a plant using the apparatus of claim 1 or 2, comprising:
the method comprises the following steps: tail gas enters a desulfurizing tower (3), and meanwhile, a first liquid storage pump (2) pumps alkaline solution in a first liquid storage tank (1) into an atomizer (3 a) at the upper part of the desulfurizing tower (3), the solution is in reverse contact with the tail gas, falls down after absorption and is discharged from the bottom of the desulfurizing tower (3);
step two: the discharged solution is sent into a second liquid storage tank (5) through a U-shaped pipeline (4) and is pumped into an ejector (7 a) at the top of a regeneration tank (7) through a second liquid storage pump (6), and in the ejection process, the solution and oxygen in the air are subjected to oxidation reaction to generate elemental sulfur which falls into the lower part of the regeneration tank (7);
step three: the elemental sulfur floats out of the liquid surface in the form of sulfur foam and overflows to the first recovery tank (8) for reuse, and the solution from which the sulfur foam is removed flows back to the first liquid storage tank (1) for continuous recycling;
step four: small amount of S produced in side reaction of oxidation reaction2O gas is discharged into a spray tower (9) through an air lifting port (74) at the top of the regeneration tank (7), an ammonia water sprayer (9 a) at the upper part of the spray tower (9) sprays downwards to be contacted with the gas, and the generated ammonium bisulfite solution falls into a second recovery tank (9 b) at the bottom for recycling;
step five: the gas purified by ammonia water upwards passes through a bent shell pass formed by an activated carbon adsorption plate (9 c), and is discharged from a vent (93) at the top after adsorption and purification.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010283508.2A CN111514727A (en) | 2020-04-13 | 2020-04-13 | Recovery device and method for acid tail gas emission of workshop |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010283508.2A CN111514727A (en) | 2020-04-13 | 2020-04-13 | Recovery device and method for acid tail gas emission of workshop |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101249375A (en) * | 2008-03-20 | 2008-08-27 | 胜利油田胜利动力机械集团有限公司 | Wet-type oxidation sweetening method and apparatus |
| CN101596399A (en) * | 2009-06-29 | 2009-12-09 | 安徽工业大学 | A kind of self-suction oxidation desulfuration process and device thereof |
| RU2527991C1 (en) * | 2010-10-27 | 2014-09-10 | Меричем Компани | Method of continuous removal of hydrogen sulphide from gas flow |
| CN108246082A (en) * | 2018-01-13 | 2018-07-06 | 安徽金禾实业股份有限公司 | Waste gas processing method and device in a kind of liquid method desulfurization regeneration system |
| CN109529580A (en) * | 2017-09-21 | 2019-03-29 | 中国石油化工股份有限公司 | The process unit and process of sulfur dioxide and hydrogen sulfide liquid phase reactor desulfurization |
-
2020
- 2020-04-13 CN CN202010283508.2A patent/CN111514727A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101249375A (en) * | 2008-03-20 | 2008-08-27 | 胜利油田胜利动力机械集团有限公司 | Wet-type oxidation sweetening method and apparatus |
| CN101596399A (en) * | 2009-06-29 | 2009-12-09 | 安徽工业大学 | A kind of self-suction oxidation desulfuration process and device thereof |
| RU2527991C1 (en) * | 2010-10-27 | 2014-09-10 | Меричем Компани | Method of continuous removal of hydrogen sulphide from gas flow |
| CN109529580A (en) * | 2017-09-21 | 2019-03-29 | 中国石油化工股份有限公司 | The process unit and process of sulfur dioxide and hydrogen sulfide liquid phase reactor desulfurization |
| CN108246082A (en) * | 2018-01-13 | 2018-07-06 | 安徽金禾实业股份有限公司 | Waste gas processing method and device in a kind of liquid method desulfurization regeneration system |
Non-Patent Citations (3)
| Title |
|---|
| 中国炼焦行业协会编: "《创新发展中的中国焦化业》", 31 January 2017, 冶金工业出版社 * |
| 孙克勤: "《电厂烟气脱硫设备及运行》", 30 April 2007, 中国电力出版社 * |
| 张蕾: "《烟气脱硫脱硝技术及催化剂的研究进展》", 31 July 2016, 中国矿业大学出版社 * |
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