CN102059038A - Treatment process and device of waste gas containing hydrogen sulfide and carbon dioxide - Google Patents
Treatment process and device of waste gas containing hydrogen sulfide and carbon dioxide Download PDFInfo
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- CN102059038A CN102059038A CN 201010596847 CN201010596847A CN102059038A CN 102059038 A CN102059038 A CN 102059038A CN 201010596847 CN201010596847 CN 201010596847 CN 201010596847 A CN201010596847 A CN 201010596847A CN 102059038 A CN102059038 A CN 102059038A
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- carbon dioxide
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Abstract
The invention discloses treatment process and device of a waste gas containing hydrogen sulfide and carbon dioxide. The treatment process comprises the following steps of: firstly decarbonizing the waste gas through a multilevel barium sulfide solution; then carrying out alkali wash through a sodium hydroxide solution, and then emptying; separating sediments generated after decarbonization to obtain a barium carbonate product; recycling mixed liquor generated after the decarbonization; and evaporating, crystallizing and separating a solution obtained by alkali wash to obtain a sodium sulfide product. The treatment process and device provided by the invention have simple process flow, cannot only directly produce the barium carbonate by utilizing CO2 contained in a mixed gas, but also produce an H2S gas needed by next step reaction through reaction, thereby not only consuming the carbon dioxide gas contained in the mixed gas, but also obtaining a hydrogen sulfide gas with very high purity; and in addition, the crystal sodium sulfide is produced by using the hydrogen sulfide, therefore, no matter the environmental protection and the benefits are optimized.
Description
Technical field
The present invention relates to a kind of waste gas treatment process and device, the waste gas treatment process and the device of particularly a kind of sulfide hydrogen, carbon dioxide.
Background technology
The gas that how to make full use of sulfide hydrogen before handling, carbon dioxide is the major issue that at present relevant manufacturing enterprise urgent need solves.Because the composition of waste gas is CO
2And H
2S, the two all belongs to faintly acid gas, and many producers only do simple process to these two kinds of gases, promptly the hydrogen sulfide simple oxidation are obtained being worth low elemental sulfur, the direct emptying of carbon dioxide.Both reduce the use value of hydrogen sulfide, increased emission amount of carbon dioxide again, caused the adverse effect of environment.
Summary of the invention
The object of the present invention is to provide the waste gas treatment process and the device of a kind of sulfide hydrogen, carbon dioxide, waste gas is obtained respectively utilizing in processing procedure, produce product of higher value.
The technical scheme that the present invention takes is:
The waste gas treatment process of a kind of sulfide hydrogen, carbon dioxide, with the waste gas multistage barium sulfide solution decarburization of process earlier, emptying after the sodium hydroxide solution alkali cleaning again, the precipitation that produces after the decarburization through separate barium carbonate product, the mixed liquor that produces after the decarburization recycles, the solution that alkali cleaning obtains through evaporation, crystallization, separate the vulcanized sodium product.
The preferred 15-25% of the concentration range of described barium sulfide solution (wt%), temperature 60-80 ℃.
The preferred 25-35% of the concentration range of described sodium hydroxide solution (wt%).
The emission-control equipment of a kind of sulfide hydrogen, carbon dioxide comprises the multistage de-carbon tower that links to each other with flue gas leading, and de-carbon tower upper end connects caustic wash tower by pipeline, and exhaust outlet is established in the upper end of caustic wash tower, and the lower end connects crystallizer by evaporimeter, and crystallizer is connected with centrifuge; De-carbon tower lower end is connected with storage tank, and storage tank connects centrifuge.
Described de-carbon tower is connected with the barium sulfide solution carrier pipe.
Described caustic wash tower is connected with the sodium hydroxide solution carrier pipe.
Technological process of the present invention is simple, not only can be with the CO in the mist
2Utilize and directly produce brium carbonate, react needed H but also reaction has produced next step
2S gas had both consumed the carbon dioxide in the mix waste gas little, and the hydrogen sulfide gas that the purity of getting back is very high is then produced crystal vulcanized sodium with hydrogen sulfide, and environmental protection, benefit have all obtained optimization.Solved the exhaust gas utilization problem of sulfide hydrogen, carbon dioxide, turned waste into wealth, had good economic environmental benefit, believed that along with development of modern industry this technology will obtain promoting more widely, thereby produce good social benefit.
Description of drawings
Fig. 1 is a structure drawing of device of the present invention,
Wherein: 1. flue gas leading, 2. barium sulfide solution carrier pipe, 3. de-carbon tower, 4. caustic wash tower, 5. evaporimeter, 6. crystallizer, 7. centrifuge, 8. packing machine, 9. storage tank.
The specific embodiment
The emission-control equipment of a kind of sulfide hydrogen, carbon dioxide, comprise the multistage de-carbon tower 3 that links to each other with flue gas leading 1, de-carbon tower 3 upper ends connect caustic wash tower 4 by pipeline, and exhaust outlet is established in the upper end of caustic wash tower 4, the lower end connects crystallizer 6 by evaporimeter 5, and crystallizer 6 is connected with centrifuge 7; De-carbon tower 3 lower ends are connected with storage tank 9, and storage tank 9 connects centrifuge 7.The technological process of the exhaust-gas treatment of sulfide hydrogen, carbon dioxide:
1. handle the carbon dioxide production brium carbonate
Adopt commercial sulphuric acid barium calcining material to be raw material, it is dissolved in water and stirs, solid-liquid is separated, make clean about 20% barium sulfide solution, carbon dioxide that will contain and hydrogen sulfide mist, in carbon dioxide absorption tower,, generate product brium carbonate and hydrogen sulfide gas with the barium sulfide solution counter current contacting.It is as follows that barium sulphide removes the chemical equation of carbon dioxide:
BaS+CO
2+H
2O＝BaCO
3↓+H
2S↑
Solidliquid mixture behind the generation brium carbonate is flowed out by the carbon dioxide absorption tower bottom and enters the brium carbonate solution storage trough, and after centrifuge separated, mother liquor went to make the liquid operation and further dissolves barium sulphide, makes barium sulfide solution, recycles back and forth then.The brium carbonate solid that separates feeding warehouse after drying carries out finished product packing.
2. utilize the hydrogen sulfide after barium sulphide is handled to produce vulcanized sodium
Clean hydrogen sulfide gas and soda bath reaction after the processing generate vulcanized sodium, separate through evaporative crystallization, can obtain the higher sodium sulfide crystal of purity.Reaction equation is as follows:
H
2S+2NaOH＝Na
2S+2H
2O
Claims (6)
1. the waste gas treatment process of a sulfide hydrogen, carbon dioxide, it is characterized in that, with the waste gas multistage barium sulfide solution decarburization of process earlier, emptying after the sodium hydroxide solution alkali cleaning again, the precipitation that produces after the decarburization through separate barium carbonate product, the mixed liquor that produces after the decarburization recycles, the solution that alkali cleaning obtains through evaporation, crystallization, separate the vulcanized sodium product.
2. the waste gas treatment process of sulfide hydrogen according to claim 1, carbon dioxide is characterized in that, the concentration range 15-25% of described barium sulfide solution.
3. the waste gas treatment process of sulfide hydrogen according to claim 1, carbon dioxide is characterized in that, the concentration range 25-35% of described sodium hydroxide solution.
4. the emission-control equipment of a sulfide hydrogen, carbon dioxide is characterized in that, comprises the multistage de-carbon tower that links to each other with flue gas leading, de-carbon tower upper end connects caustic wash tower by pipeline, exhaust outlet is established in the upper end of caustic wash tower, and the lower end connects crystallizer by evaporimeter, and crystallizer is connected with centrifuge; De-carbon tower lower end is connected with storage tank, and storage tank connects centrifuge.
5. the emission-control equipment of sulfide hydrogen according to claim 4, carbon dioxide is characterized in that, described de-carbon tower is connected with the barium sulfide solution carrier pipe.
6. the emission-control equipment of sulfide hydrogen according to claim 4, carbon dioxide is characterized in that described caustic wash tower is connected with the sodium hydroxide solution carrier pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN 201010596847 CN102059038A (en) | 2010-12-20 | 2010-12-20 | Treatment process and device of waste gas containing hydrogen sulfide and carbon dioxide |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010596847 CN102059038A (en) | 2010-12-20 | 2010-12-20 | Treatment process and device of waste gas containing hydrogen sulfide and carbon dioxide |
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| CN 201010596847 Pending CN102059038A (en) | 2010-12-20 | 2010-12-20 | Treatment process and device of waste gas containing hydrogen sulfide and carbon dioxide |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102515112A (en) * | 2011-12-30 | 2012-06-27 | 宜宾海丝特纤维有限责任公司 | Method for preparing sodium sulfide from hydrogen sulfide waste gas produced in production of viscose fibre |
| CN102703149A (en) * | 2012-05-25 | 2012-10-03 | 赵志军 | Method for natural gas desulphurization and resource utilization of desulphurization waste solution |
| CN103551018A (en) * | 2013-11-07 | 2014-02-05 | 中天环保产业(集团)有限公司 | Sulfur-containing tail gas purifying and recycling method |
| CN104071758A (en) * | 2014-07-15 | 2014-10-01 | 袁磊 | Device and method for preparing sodium hydrosulfide |
| US9284621B2 (en) | 2012-11-02 | 2016-03-15 | Strategic Metals Ltd. | Processing of sulfate and/or sulfide-rich waste using CO2-enriched gases to sequester CO2, reduce environmental impacts including acid rock drainage and produce reaction products |
| CN106345254A (en) * | 2015-07-15 | 2017-01-25 | 中国石油化工股份有限公司 | Method and device for treating hydrogen sulfide-containing gas |
| US9695050B2 (en) | 2012-11-02 | 2017-07-04 | Terra Co2 Technologies Ltd. | Methods and systems using electrochemical cells for processing metal sulfate compounds from mine waste and sequestering CO2 |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102515112A (en) * | 2011-12-30 | 2012-06-27 | 宜宾海丝特纤维有限责任公司 | Method for preparing sodium sulfide from hydrogen sulfide waste gas produced in production of viscose fibre |
| CN102703149A (en) * | 2012-05-25 | 2012-10-03 | 赵志军 | Method for natural gas desulphurization and resource utilization of desulphurization waste solution |
| CN102703149B (en) * | 2012-05-25 | 2015-04-08 | 赵志军 | Method for natural gas desulphurization and resource utilization of desulphurization waste solution |
| US9284621B2 (en) | 2012-11-02 | 2016-03-15 | Strategic Metals Ltd. | Processing of sulfate and/or sulfide-rich waste using CO2-enriched gases to sequester CO2, reduce environmental impacts including acid rock drainage and produce reaction products |
| US9695050B2 (en) | 2012-11-02 | 2017-07-04 | Terra Co2 Technologies Ltd. | Methods and systems using electrochemical cells for processing metal sulfate compounds from mine waste and sequestering CO2 |
| CN103551018A (en) * | 2013-11-07 | 2014-02-05 | 中天环保产业(集团)有限公司 | Sulfur-containing tail gas purifying and recycling method |
| CN103551018B (en) * | 2013-11-07 | 2016-08-17 | 中天环保产业(集团)有限公司 | A kind of sulfur-containing tail gas purifies and recoverying and utilizing method |
| CN104071758A (en) * | 2014-07-15 | 2014-10-01 | 袁磊 | Device and method for preparing sodium hydrosulfide |
| CN106345254A (en) * | 2015-07-15 | 2017-01-25 | 中国石油化工股份有限公司 | Method and device for treating hydrogen sulfide-containing gas |
| CN106345254B (en) * | 2015-07-15 | 2019-01-25 | 中国石油化工股份有限公司 | Handle the method and device of H 2 S-containing gas |
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Application publication date: 20110518 |