CN202638263U - Tail gas absorption device - Google Patents
Tail gas absorption device Download PDFInfo
- Publication number
- CN202638263U CN202638263U CN2012203363569U CN201220336356U CN202638263U CN 202638263 U CN202638263 U CN 202638263U CN 2012203363569 U CN2012203363569 U CN 2012203363569U CN 201220336356 U CN201220336356 U CN 201220336356U CN 202638263 U CN202638263 U CN 202638263U
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- absorption tower
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- tail gas
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Abstract
The utility model discloses a tail gas absorption device which comprises a water absorption tower unit, an alkali absorption tower unit and a blocking valve which is arranged on a connecting pipeline, wherein the water absorption tower unit absorbs hydrogen chloride in the tail gas by using water, and the alkali absorption tower unit absorbs sulfur dioxide in the tail gas by using alkali. The water absorption tower unit comprises a first-level water absorption tower, a second-level water absorption tower, a third-level water absorption tower, a first-level water absorption liquid circulating pump, a second-level water absorption liquid circulating pump and a third-level water absorption liquid circulating pump; and the alkali absorption tower unit comprises a first-level alkali absorption tower, a second-level alkali absorption tower, a third-level alkali absorption tower, a first-level alkali absorption liquid circulating pump, a second-level alkali absorption liquid circulating pump and a third-level alkali absorption liquid circulating pump. The device has the advantages that more than 95% of sulfur dioxide and hydrogen chloride can be absorbed effectively, and production tail gas can be discharged up to standards, sulfur dioxide and hydrogen chloride are absorbed separately to obtain hydrochloric acid and sodium sulfite solutions which are high in concentration and can be sold as by-products, and the utilization rate of the absorption liquid is improved.
Description
Technical field
The utility model relates to a kind of chemical industry equipment, particularly a kind of device for absorbing tail gas.
Background technology
2,4,6-trimethylbenzene chloroacetic chloride is a kind of important chemical intermediate, and very large market demand is arranged.Technique is to adopt 2,4,6-trimethylbenzene acetic acid and thionyl chloride reaction at present, and a large amount of sulfur dioxide and hydrogen chloride gas output are arranged in the course of reaction, and these toxic and harmfuls must carry out vent gas treatment and could discharge, otherwise bring very large impact to environment.
It generally is to adopt alkali liquor absorption that traditional tail gas absorbs, and produces a large amount of saliferous alkaline waste waters in the absorption process, be good at processing, and the assimilation ratio of sulfur dioxide and hydrogen chloride is not high, can not fundamentally solve environmental issue.
Summary of the invention
For addressing the above problem, the utility model provides a kind of device for absorbing tail gas that can effectively absorb the utilization rate of sulfur dioxide in the tail gas and hydrogen chloride, raising absorption liquid.
The technical solution of the utility model is a kind of device for absorbing tail gas, comprises the water absorption tower device that utilizes water to absorb hydrogen chloride in tail gas, utilizes alkali to absorb the alkali absorption tower device of sulfur dioxide in tail gas and is arranged on the valve that cuts on the connecting line;
Described water absorption tower device comprises one-level water absorption tower, two-stage water absorption tower, three grades of water absorption towers, one-level water absorption liquid circulating pump, secondary water absorption tower circulating pump and three grades of water absorption tower circulating pumps; One-level water absorption tower comprises the one-level film-falling absorption tower that is arranged on the top and is arranged on the one-level aqueous solution storage tank of below; Secondary water absorption tower comprises the secondary film-falling absorption tower that is arranged on the top and is arranged on the secondary aqueous solution storage tank of below; Three grades of water absorption towers comprise three grades of film-falling absorption towers that are arranged on the top and three grades of aqueous solution storage tanks that are arranged on the below;
One-level aqueous solution storage tank links to each other with secondary aqueous solution storage tank by one-level water absorption liquid circulating pump, one-level water absorption liquid circulating pump links to each other with the top of one-level film-falling absorption tower, and with the connecting line that the top of one-level film-falling absorption tower links to each other outlet is set at one-level water absorption liquid circulating pump, the top of one-level film-falling absorption tower is provided with the import of one-level tail gas; The one-level film-falling absorption tower tail gas outlet that the bottom of one-level film-falling absorption tower is provided with links to each other with the secondary tail gas import that the top of secondary film-falling absorption tower is provided with;
Secondary aqueous solution storage tank links to each other with three grades of aqueous solution storage tanks by secondary water absorption tower circulating pump, secondary water absorption tower circulating pump links to each other with the top of secondary film-falling absorption tower, and the secondary film-falling absorption tower tail gas outlet that the bottom of secondary film-falling absorption tower is provided with links to each other with three grades of tail gas imports that the top of three grades of film-falling absorption towers is provided with;
Three grades of aqueous solution storage tanks link to each other with three grades of water absorption tower circulating pumps and three grades of water absorption tower circulating pumps link to each other with the top of three grades of film-falling absorption towers; Be provided with three grades of water absorption tower moisturizing imports on three grades of aqueous solution storage tanks;
Described alkali absorption tower device comprises one-level alkali absorption tower, secondary alkali absorption tower, three grades of alkali absorption towers, one-level alkali absorption liquid circulating pump, secondary alkali absorption liquid circulating pump and three grades of alkali absorption liquid circulating pumps; One-level alkali absorption tower comprises that being arranged on the top has one-level packed absorber and one-level aqueous slkali storage tank; The top on secondary alkali absorption tower is provided with secondary packed absorber and secondary aqueous slkali storage tank; The top on three grades of alkali absorption towers is provided with three grades of packed absorbers and three grades of aqueous slkali storage tanks;
One-level aqueous slkali storage tank links to each other with secondary aqueous slkali storage tank by one-level alkali absorption liquid circulating pump; One-level alkali absorption liquid circulating pump links to each other with the top of one-level packed absorber, and with the connecting line that the top of one-level packed absorber links to each other outlet is set at one-level alkali absorption liquid circulating pump; Three grades of film-falling absorption tower tail gas outlets that the bottom of three grades of film-falling absorption towers is provided with link to each other with the one-level alkali absorption tail gas import that one-level aqueous slkali storage tank is provided with; The top of one-level packed absorber absorbs the tail gas import with the secondary alkali that secondary aqueous slkali storage tank is provided with and links to each other;
Secondary aqueous slkali storage tank links to each other with three grades of aqueous slkali storage tanks by secondary alkali absorption liquid circulating pump; Secondary alkali absorption liquid circulating pump links to each other with the top of secondary packed absorber, and the top of secondary packed absorber absorbs the tail gas import with three grades of alkali that three grades of aqueous slkali storage tanks are provided with and links to each other;
Three grades of aqueous slkali storage tanks link to each other with three grades of alkali absorption liquid circulating pumps; Three grades of alkali absorption liquid circulating pumps link to each other with the top of three grades of packed absorbers, and the top of three grades of packed absorbers is provided with the rear tail gas outlet of processing; Be provided with three grades of alkali absorption towers on three grades of aqueous slkali storage tanks and mend the alkali mouth.
The beneficial effects of the utility model are: one is that sulfur dioxide and hydrogen chloride gas more than 95% effectively absorbed, and producing tail gas can qualified discharge; The 2nd, sulfur dioxide and hydrogen chloride gas are separately absorbed, and obtain the higher hydrochloric acid of concentration and sodium sulfite solution, can be used as byproduct and sell; The 3rd, improved the utilization rate of absorption liquid.
Description of drawings
Fig. 1 is structural representation of the present utility model.
The specific embodiment
1 pair of the utility model further specifies by reference to the accompanying drawings:
A kind of device for absorbing tail gas described in the utility model, its structure be, utilize water absorb impurity in the tail gas water absorption tower device, utilize alkali to absorb the alkali absorption tower device of impurity in the tail gas and be arranged on the valve that cuts on the connecting line;
The course of work of the present utility model:
The utility model factory to sulfur dioxide and hydrogen chloride gas take separately, the classification absorption pattern: the sulfur dioxide that produces in the production process and hydrogen chloride gas carry out first three grades of water and absorb in the device of water absorption tower, wherein the hydrogen chloride more than 95% is absorbed, and generates hydrochloric acid solution; And then pass through alkali absorption tower device and carry out three grades of alkali liquor absorptions, wherein the sulfur dioxide more than 95% is absorbed, and generates sodium sulfite solution; Thereby realize the effective separation of sulfur dioxide and hydrogen chloride.
Three grades of absorption mode of the present utility model: gas contacts with the contrary concentration difference of absorption liquid, the tail gas that hydrogen chloride content is higher is entered in the first grade absorption tower by tail gas import 13, behind the one-level film-falling absorption tower 27 through the setting of first grade absorption tower 1 top, the content of hydrogen chloride in tail gas effectively reduces, the tail gas outlet (39) that the bottom of tail gas by one-level film-falling absorption tower (27) is provided with links to each other with the secondary tail gas import (14) that the top of secondary film-falling absorption tower (29) is provided with, enter into secondary water absorption tower and comprise the secondary film-falling absorption tower (29) that is arranged on the top, after tail gas enters into two-level absorption tower, hydrogen chloride in tail gas content further reduces, and enters at last three grades of absorption towers; Absorption liquid concentration in the one-level aqueous solution storage tank 28 of first grade absorption tower is the highest, the gas the highest with content contacts, absorption liquid concentration in three grades of aqueous solution storage tanks 32 on three grades of absorption towers is minimum, the gas minimum with content contacts, thereby realize processing with the absorption liquid of least concentration the gas of minimum content, guarantee the assimilation effect in each step.
Through three Tai Shui absorption towers, enter three alkali absorption towers with the flow direction of low in and high out successively again, at last discharging; Each absorption tower is squeezed into absorption tower with absorption liquid in the tower from cat head by the absorption liquid circulating pump, in the falling-film absorber of water absorption tower, hydrogen chloride and absorption liquid co-flow, hydrogen chloride gas is absorbed by liquid absorption, in the filler of alkali absorption tower, sulfur dioxide and absorption liquid reverse flow, sulfur dioxide gas is absorbed by liquid absorption.
Operation along with each absorption tower, the concentration of each absorption liquid raises gradually, after hydrochloric acid in the one-level water absorption tower (perhaps sodium sulfite in the one-level alkali absorption tower) concentration reaches certain numerical value, by one-level water absorbent recirculation pump (perhaps one-level alkali absorbent recirculation pump) the high concentration absorption liquid is transferred to other places, shift respectively and collect, the secondary absorption liquid changes first grade absorption tower over to, three grades of absorption liquids change two-level absorption tower over to, replenish fresh absorption liquid in the first grade absorption tower, thereby guarantee effective utilization of absorption liquid, improve the concentration of the hydrochloric acid (perhaps sodium sulfite) of three grades of absorption liquids, be convenient to the processing of hydrochloric acid (perhaps sodium sulfite) solution, reduce discharge of wastewater.
Claims (1)
1. device for absorbing tail gas is characterized in that: comprise the water absorption tower device that utilizes water to absorb hydrogen chloride in tail gas, utilize alkali to absorb the alkali absorption tower device of sulfur dioxide in tail gas and be arranged on the valve that cuts on the connecting line;
Described water absorption tower device comprises one-level water absorption tower (1), two-stage water absorption tower (2), three grades of water absorption towers (3), one-level water absorption liquid circulating pump (7), secondary water absorption tower circulating pump (8) and three grades of water absorption tower circulating pumps (9); One-level water absorption tower comprises the one-level film-falling absorption tower (27) that is arranged on the top and is arranged on the one-level aqueous solution storage tank (28) of below; Secondary water absorption tower comprises the secondary film-falling absorption tower (29) that is arranged on the top and is arranged on the secondary aqueous solution storage tank (30) of below; Three grades of water absorption towers comprise the three grades of film-falling absorption towers (31) above being arranged on and are arranged on three grades of aqueous solution storage tanks (32) of below;
One-level aqueous solution storage tank (28) links to each other with secondary aqueous solution storage tank (30) by one-level water absorption liquid circulating pump (7), one-level water absorption liquid circulating pump (7) links to each other with the top of one-level film-falling absorption tower (27), and with the connecting line that the top of one-level film-falling absorption tower (27) links to each other outlet (20) is set at one-level water absorption liquid circulating pump (7), the top of one-level film-falling absorption tower (27) is provided with one-level tail gas import (13); The one-level film-falling absorption tower tail gas outlet (39) that the bottom of one-level film-falling absorption tower (27) is provided with links to each other with the secondary tail gas import (14) that the top of secondary film-falling absorption tower (29) is provided with;
Secondary aqueous solution storage tank (30) links to each other with three grades of aqueous solution storage tanks (32) by secondary water absorption tower circulating pump (8), secondary water absorption tower circulating pump (8) links to each other with the top of secondary film-falling absorption tower (29), and the secondary film-falling absorption tower tail gas outlet (40) that the bottom of secondary film-falling absorption tower (29) is provided with links to each other with three grades of tail gas imports (15) that the top of three grades of film-falling absorption towers (31) is provided with;
Three grades of aqueous solution storage tanks (32) link to each other with three grades of water absorption tower circulating pumps (9) and three grades of water absorption tower circulating pumps (9) link to each other with the top of three grades of film-falling absorption towers (31); Be provided with three grades of water absorption tower moisturizing imports (21) on three grades of aqueous solution storage tanks (32);
Described alkali absorption tower device comprises one-level alkali absorption tower (4), secondary alkali absorption tower (5), three grades of alkali absorption towers (6), one-level alkali absorption liquid circulating pump (10), secondary alkali absorption liquid circulating pump (11) and three grades of alkali absorption liquid circulating pumps (12); One-level alkali absorption tower (4) comprises that being arranged on the top has one-level packed absorber (33) and one-level aqueous slkali storage tank (34); The top on secondary alkali absorption tower (5) is provided with secondary packed absorber (35) and secondary aqueous slkali storage tank (36); The top on three grades of alkali absorption towers (6) is provided with three grades of packed absorbers (37) and three grades of aqueous slkali storage tanks (38);
One-level aqueous slkali storage tank (34) links to each other with secondary aqueous slkali storage tank (36) by one-level alkali absorption liquid circulating pump (10); One-level alkali absorption liquid circulating pump (10) links to each other with the top of one-level packed absorber (33), and with the connecting line that the top of one-level packed absorber (33) links to each other outlet (22) is set at one-level alkali absorption liquid circulating pump (10); Three grades of film-falling absorption tower tail gas outlets (41) that the bottom of three grades of film-falling absorption towers (31) is provided with absorb tail gas import (16) with the one-level alkali that one-level aqueous slkali storage tank (34) is provided with and link to each other; The top of one-level packed absorber (33) absorbs tail gas import (17) with the secondary alkali that secondary aqueous slkali storage tank (36) is provided with and links to each other;
Secondary aqueous slkali storage tank (36) links to each other with three grades of aqueous slkali storage tanks (38) by secondary alkali absorption liquid circulating pump (11); Secondary alkali absorption liquid circulating pump (11) links to each other with the top of secondary packed absorber (35), and the top of secondary packed absorber (35) absorbs tail gas import (18) with three grades of alkali that three grades of aqueous slkali storage tanks (38) are provided with and links to each other;
Three grades of aqueous slkali storage tanks (38) link to each other with three grades of alkali absorption liquid circulating pumps (12); Three grades of alkali absorption liquid circulating pumps (12) link to each other with the top of three grades of packed absorbers (37), and the top of three grades of packed absorbers (37) is provided with the rear tail gas outlet (19) of processing; Be provided with three grades of alkali absorption towers on three grades of aqueous slkali storage tanks (38) and mend the alkali mouth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012203363569U CN202638263U (en) | 2012-07-11 | 2012-07-11 | Tail gas absorption device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012203363569U CN202638263U (en) | 2012-07-11 | 2012-07-11 | Tail gas absorption device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202638263U true CN202638263U (en) | 2013-01-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012203363569U Expired - Lifetime CN202638263U (en) | 2012-07-11 | 2012-07-11 | Tail gas absorption device |
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| Country | Link |
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| CN (1) | CN202638263U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105964144A (en) * | 2016-06-02 | 2016-09-28 | 江苏三井环保股份有限公司 | Three waste incineration comprehensive treatment system and method |
| CN106076067A (en) * | 2016-08-03 | 2016-11-09 | 安徽八化工股份有限公司 | A kind of for processing the device of tail gas in benzene chloride production |
| CN106215624A (en) * | 2016-08-03 | 2016-12-14 | 安徽八化工股份有限公司 | The processing method of HCl in the two-stage nitration tail gas of a kind of benzene chloride production |
| CN106431897A (en) * | 2016-09-27 | 2017-02-22 | 宿迁科思化学有限公司 | New compounding technology for 2,4,6-trimethyl phenylacetyl chloride |
| CN111495120A (en) * | 2020-04-23 | 2020-08-07 | 西安三瑞实业有限公司 | Rare earth concentrate acidified tail gas treatment system and method based on indirect-heating type rotary reactor |
| CN111807960A (en) * | 2020-08-01 | 2020-10-23 | 浙江亦龙新材料有限公司 | Preparation process of isooctyl acrylate |
-
2012
- 2012-07-11 CN CN2012203363569U patent/CN202638263U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105964144A (en) * | 2016-06-02 | 2016-09-28 | 江苏三井环保股份有限公司 | Three waste incineration comprehensive treatment system and method |
| CN106076067A (en) * | 2016-08-03 | 2016-11-09 | 安徽八化工股份有限公司 | A kind of for processing the device of tail gas in benzene chloride production |
| CN106215624A (en) * | 2016-08-03 | 2016-12-14 | 安徽八化工股份有限公司 | The processing method of HCl in the two-stage nitration tail gas of a kind of benzene chloride production |
| CN106431897A (en) * | 2016-09-27 | 2017-02-22 | 宿迁科思化学有限公司 | New compounding technology for 2,4,6-trimethyl phenylacetyl chloride |
| CN106431897B (en) * | 2016-09-27 | 2019-06-04 | 宿迁科思化学有限公司 | A kind of new synthesis process of 2,4,6- trimethylbenzene chloroacetic chloride |
| CN111495120A (en) * | 2020-04-23 | 2020-08-07 | 西安三瑞实业有限公司 | Rare earth concentrate acidified tail gas treatment system and method based on indirect-heating type rotary reactor |
| CN111807960A (en) * | 2020-08-01 | 2020-10-23 | 浙江亦龙新材料有限公司 | Preparation process of isooctyl acrylate |
| CN111807960B (en) * | 2020-08-01 | 2022-04-22 | 浙江亦龙新材料有限公司 | Preparation process of isooctyl acrylate |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130102 |