CN104984652A - Treating device for tail gas in acidifying refinement of alkaline residues and treating process thereof - Google Patents
Treating device for tail gas in acidifying refinement of alkaline residues and treating process thereof Download PDFInfo
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- CN104984652A CN104984652A CN201510403389.9A CN201510403389A CN104984652A CN 104984652 A CN104984652 A CN 104984652A CN 201510403389 A CN201510403389 A CN 201510403389A CN 104984652 A CN104984652 A CN 104984652A
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Abstract
The invention discloses a treating device for tail gas in acidifying refinement of alkaline residues and a treating process thereof. The treating device mainly comprises an alkaline washing tower and an adsorbing tower, wherein an active-carbon adsorbing filler layer is arranged at the middle part of the adsorbing tower; a caustic-soda feeding pipe is connected at the upper part of the alkaline washing tower; the top part of the alkaline washing tower is connected with the lower part of the adsorbing tower by a pipeline; the bottom part of the alkaline washing tower is connected with the upper part of the alkaline washing tower by two alkaline-washing circulation pumps which are connected in parallel; a feeding port of the alkaline washing tower is connected with a process tail-gas pipeline, a middle storage tank, a refined-acid storage tank, a front distillation storage tank and a rear distillation storage tank in an alkaline-residue acidifying refinement device. The treating device has the characteristics that an alkaline-washing and active-carbon adsorbing process is adopted, the production and the operation are good, the waste-gas recovery rate of the device is more than or equal to 99.98 percent, the air-emission quality reaches the national standard, the green and environment-friendly industrial chain engineering of the device is effectively realized, and simultaneously, the obtained side product is sodium sulfide. The treating device disclosed by the invention has the advantages of environment-friendliness and economic effects, flexible operation and low energy consumption.
Description
Technical field
The present invention relates to alkaline residue acidifying and refine tail gas disposal technique field, be specifically related to a kind of alkaline residue acidifying and refine exhaust gas processing device and treatment process thereof.
Background technology
Alkaline residue acidifying process for refining flow process, alkaline residue enters static mixer, neutralization reaction settler in intensification de-oiling acid by a certain percentage through alkaline residue pump and sulfuric acid, and the thick acid in upper strata enters thick sour storage tank, lower floor's sewage decontaminated water Treatment stations.Thick acid enters distillation still after preheat, carry out interval decompression distillation under vacuum, the purified product of different labels can be produced according to the difference of production decision, front and back cut can be produced and the byproduct such as still is residual in production process, produce a small amount of hydrogen sulfide and volatility oil gas in the process, and in production process and smart sour storage tank, front heat up in a steamer storage tank and after heat up in a steamer in storage tank and can there is a certain amount of process tail gas, these tail gas are as caused great pollution to air ambient without process, and the hydrogen sulfide simultaneously contained in tail gas is also a kind of useful industrial chemicals.
Summary of the invention
The invention provides a kind of alkaline residue acidifying and refine exhaust gas processing device and treatment process thereof, the process tail gas contaminated environment that the alkaline residue acidifying existed to solve prior art is refined and wasting problem.
The technical solution adopted for the present invention to solve the technical problems is:
Exhaust gas processing device is refined in a kind of alkaline residue acidifying, primarily of caustic wash tower and adsorption tower composition, charcoal absorption packing layer is set in the middle part of adsorption tower, caustic wash tower top connects a caustic soda feed pipe, caustic wash tower top is connected with the bottom of adsorption tower by pipeline, be connected with the top of caustic wash tower by two alkali cleaning circulating pumps in parallel bottom caustic wash tower, the charging aperture of caustic wash tower and the process tail gas pipeline in alkaline residue acidifying refining plant, intermediate storage tank, smart sour storage tank, front heat up in a steamer storage tank with after heat up in a steamer storage tank and be connected.
The treatment process of exhaust gas processing device is refined in above-mentioned alkaline residue acidifying, with caustic soda and active carbon for raw material, by caustic wash tower and adsorption tower, catalytic reaction and adsorption treatment are carried out to process tail gas, concrete technology step is: the process tail gas in alkaline residue acidifying refining plant, intermediate storage tank, the sour storage tank of essence, before heat up in a steamer storage tank and after heat up in a steamer storage tank process tail gas deliver in caustic wash tower, the soda bath that process tail gas and top flow down in caustic wash tower contacts, under the catalyst action of caustic wash tower, hydrogen sulfide in process tail gas and production of caustic soda sodium sulfide solution, alkaline solution bottom caustic wash tower loops back the gap portion of setting foot on by alkali cleaning circulating pump to be continued to react with process tail gas, a part of sodium sulfide solution bottom caustic wash tower sends take-away by alkali cleaning circulating pump, the remaining micro-tail gas in caustic wash tower top is tightly held by activated carbon packing layer and carries out physical absorption entering in adsorption tower, the process tail gas finally handled well is by the emptying of adsorption tower top.
Apparatus of the present invention adopt alkali cleaning-active carbon absorption technology, production run is good, device waste gas recovery rate >=99.98%, air venting quality is up to state standards, the industrial chain engineering of effective implement device environmental protection, by-product obtains vulcanized sodium product simultaneously, has the advantage that environmental protection and economy, flexible operation and energy consumption are low.
accompanying drawing illustrates:
Below in conjunction with drawings and Examples, the present invention is further described.
Fig. 1 is the structural representation of apparatus of the present invention.
Storage tank, 21 charcoal absorption packing layers are heated up in a steamer after heating up in a steamer storage tank, 7 before 1 caustic wash tower, 2 adsorption towers, 3 NaOH solution circulating pumps, 4 intermediate storage tanks, 5 smart sour storage tanks, 6 in figure.
detailed description of the invention:
As shown in the figure, exhaust gas processing device is refined in a kind of alkaline residue acidifying, form primarily of caustic wash tower 1 and adsorption tower 2, charcoal absorption packing layer 21 is set in the middle part of adsorption tower 2, caustic wash tower 1 top connects a caustic soda feed pipe, caustic wash tower 1 top is connected by the bottom of pipeline with adsorption tower 2, be connected with the top of caustic wash tower 1 by two alkali cleaning circulating pumps 3 in parallel bottom caustic wash tower 1, the charging aperture of caustic wash tower 1 and the process tail gas pipeline in alkaline residue acidifying refining plant, intermediate storage tank 4, smart sour storage tank 5, front heat up in a steamer storage tank 6 with after heat up in a steamer storage tank 7 and be connected.
The treatment process of exhaust gas processing device is refined in above-mentioned alkaline residue acidifying, with caustic soda and active carbon for raw material, by caustic wash tower and adsorption tower, catalytic reaction and adsorption treatment are carried out to process tail gas, concrete technology step is: the process tail gas in alkaline residue acidifying refining plant, intermediate storage tank, the sour storage tank of essence, before heat up in a steamer storage tank and after heat up in a steamer storage tank process tail gas deliver in caustic wash tower, the soda bath that process tail gas and top flow down in caustic wash tower contacts, under the catalyst action of caustic wash tower, hydrogen sulfide in process tail gas and production of caustic soda sodium sulfide solution, alkaline solution bottom caustic wash tower loops back the gap portion of setting foot on by alkali cleaning circulating pump to be continued to react with process tail gas, a part of sodium sulfide solution bottom caustic wash tower sends take-away by alkali cleaning circulating pump, the remaining micro-tail gas in caustic wash tower top is tightly held by activated carbon packing layer and carries out physical absorption entering in adsorption tower, the process tail gas finally handled well is by the emptying of adsorption tower top.
Claims (2)
1. exhaust gas processing device is refined in an alkaline residue acidifying, it is characterized in that primarily of caustic wash tower and adsorption tower composition, charcoal absorption packing layer is set in the middle part of adsorption tower, caustic wash tower top connects a caustic soda feed pipe, caustic wash tower top is connected with the bottom of adsorption tower by pipeline, be connected with the top of caustic wash tower by two alkali cleaning circulating pumps in parallel bottom caustic wash tower, the charging aperture of caustic wash tower and the process tail gas pipeline in alkaline residue acidifying refining plant, intermediate storage tank, smart sour storage tank, front heat up in a steamer storage tank with after heat up in a steamer storage tank and be connected.
2. the treatment process of exhaust gas processing device is refined in alkaline residue acidifying according to claim 1, it is characterized in that with caustic soda and active carbon for raw material, by caustic wash tower and adsorption tower, catalytic reaction and adsorption treatment are carried out to process tail gas, concrete technology step is: the process tail gas in alkaline residue acidifying refining plant, intermediate storage tank, the sour storage tank of essence, before heat up in a steamer storage tank and after heat up in a steamer storage tank process tail gas deliver in caustic wash tower, the soda bath that process tail gas and top flow down in caustic wash tower contacts, under the catalyst action of caustic wash tower, hydrogen sulfide in process tail gas and production of caustic soda sodium sulfide solution, alkaline solution bottom caustic wash tower loops back the gap portion of setting foot on by alkali cleaning circulating pump to be continued to react with process tail gas, a part of sodium sulfide solution bottom caustic wash tower sends take-away by alkali cleaning circulating pump, the remaining micro-tail gas in caustic wash tower top is tightly held by activated carbon packing layer and carries out physical absorption entering in adsorption tower, the process tail gas finally handled well is by the emptying of adsorption tower top.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510403389.9A CN104984652A (en) | 2015-07-11 | 2015-07-11 | Treating device for tail gas in acidifying refinement of alkaline residues and treating process thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510403389.9A CN104984652A (en) | 2015-07-11 | 2015-07-11 | Treating device for tail gas in acidifying refinement of alkaline residues and treating process thereof |
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| CN104984652A true CN104984652A (en) | 2015-10-21 |
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| CN201510403389.9A Pending CN104984652A (en) | 2015-07-11 | 2015-07-11 | Treating device for tail gas in acidifying refinement of alkaline residues and treating process thereof |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1995007750A1 (en) * | 1993-09-17 | 1995-03-23 | ABB Fläkt AB | Method and apparatus for absorbing hydrogen sulphide |
| CN101450275A (en) * | 2007-12-04 | 2009-06-10 | 中国石油化工股份有限公司 | Treatment method of odor gas containing sulfur and dust |
| CN102049181A (en) * | 2009-10-27 | 2011-05-11 | 中国石油化工股份有限公司 | Purification method of sulfur-containing organic waste gas |
| CN103045289A (en) * | 2011-10-17 | 2013-04-17 | 中国石油化工股份有限公司 | Comprehensive treatment method of liquid hydrocarbon alkali residue waste liquid |
| CN104607435A (en) * | 2013-11-05 | 2015-05-13 | 中国石油化工股份有限公司 | Sulfur-containing alkaline residue comprehensive control method |
| CN204469528U (en) * | 2015-03-04 | 2015-07-15 | 河北新启元能源技术开发股份有限公司 | Device for recovering tail gas |
-
2015
- 2015-07-11 CN CN201510403389.9A patent/CN104984652A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1995007750A1 (en) * | 1993-09-17 | 1995-03-23 | ABB Fläkt AB | Method and apparatus for absorbing hydrogen sulphide |
| CN1133568A (en) * | 1993-09-17 | 1996-10-16 | Abb.弗拉克特有限公司 | Method and apparatus for absorbing hydrogen sulphide |
| CN101450275A (en) * | 2007-12-04 | 2009-06-10 | 中国石油化工股份有限公司 | Treatment method of odor gas containing sulfur and dust |
| CN102049181A (en) * | 2009-10-27 | 2011-05-11 | 中国石油化工股份有限公司 | Purification method of sulfur-containing organic waste gas |
| CN103045289A (en) * | 2011-10-17 | 2013-04-17 | 中国石油化工股份有限公司 | Comprehensive treatment method of liquid hydrocarbon alkali residue waste liquid |
| CN104607435A (en) * | 2013-11-05 | 2015-05-13 | 中国石油化工股份有限公司 | Sulfur-containing alkaline residue comprehensive control method |
| CN204469528U (en) * | 2015-03-04 | 2015-07-15 | 河北新启元能源技术开发股份有限公司 | Device for recovering tail gas |
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Application publication date: 20151021 |
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