CN203916416U - A kind of acidolysis gas recovery system - Google Patents
A kind of acidolysis gas recovery system Download PDFInfo
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- CN203916416U CN203916416U CN201420272255.9U CN201420272255U CN203916416U CN 203916416 U CN203916416 U CN 203916416U CN 201420272255 U CN201420272255 U CN 201420272255U CN 203916416 U CN203916416 U CN 203916416U
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Abstract
A kind of acidolysis gas recovery system, belongs to exhaust-gas treatment and environmental unit technical field.Acidolysis gas recovery system absorbs rear pump by deentrainment tower, reversal valve, acid absorption column, tail gas absorber, sour absorbent recirculation pump, tail gas absorbent recirculation pump, tail gas and pickling circulating pump forms; The beneficial effects of the utility model are: (1) absorbs moisture in acid mist with silica gel and reaches demist effect, then absorb recovered acid with the concentrated sulfuric acid, reach sour recovery; (2) moisture absorption of silica gel is that acidolysis different times completes respectively with being dried, another spent material and the energy; (3) solid material of waste gas wrapped folder is recycled; (4) implementation result: SO
3the rate of recovery>=99.0%.
Description
Technical field
The application belongs to exhaust-gas treatment and environmental unit technical field.The present invention relates to a kind of acidolysis gas recovery system, more particularly, be one and utilize acidolysis different times waste gas feature, in the acid mist outbreak period, apply silica gel and absorb moisture in acid mist in fluid bed, acid gas absorbs recovered acid with the concentrated sulfuric acid; In air stirring phase at ordinary times, application waste gas dry silica gel, waste gas send the system of vent gas treatment again.
Background technology
Current sulfate process titanium dioxide is produced and is still accounted for very large proportion in China, sulfate process titanium dioxide is produced the serious three wastes problem that exists, wherein useless solid waste liquid has good solution, only has acidolysis waste gas problem, owing to producing a large amount of sulfuric acid mists in the short time,, still there is the problem of direct discharge in the solution not had so far.
Summary of the invention
In order to solve acidolysis waste gas problem in current sulfate process titanium dioxide production, the application proposes a kind of acidolysis gas recovery system, this system is reasonable, reaches raw materials recovery, eliminates the object of acid mist reclaim sulfuric acid, and system small investment, stable and reliable operation, energy resource consumption are few.
A kind of acidolysis gas recovery system, is one and utilizes acidolysis different times waste gas feature, in the acid mist outbreak period, applies silica gel and absorb moisture in acid mist in fluid bed, and acid gas absorbs recovered acid with the concentrated sulfuric acid; In air stirring phase at ordinary times, application waste gas dry silica gel, waste gas send vent gas treatment again; And before moisture, first washing acidolysis waste gas with the concentrated sulfuric acid in application silica gel absorbs acid mist, washing slurries return the system of Producing Titanium Dioxide hydrolysis procedure recovery raw material.
Described acidolysis gas recovery system absorbs rear pump by deentrainment tower, reversal valve, acid absorption column, tail gas absorber, sour absorbent recirculation pump, tail gas absorbent recirculation pump, tail gas and pickling circulating pump forms;
Described deentrainment tower acidolysis exhaust gas inlet is up provided with successively the rapid ball layer of pickling, pickling spray acid layer, supports expanded metals, silica gel layer and restriction expanded metals; Deentrainment tower acidolysis exhaust gas inlet down arranges slurries gathering-device;
The import of described acid absorption column acid gas is up provided with successively absorption gas distributor, dry load layer, absorbs sour spray thrower and absorption demist layer;
Described tail gas absorber exhaust gas inlet is up provided with tail air absorbing body distributor successively, tail is inhaled packing layer, tail imbibition spray thrower and tail and absorbed mist layer.
Apply a kind of acidolysis gas recovery system of the application, comprise the interaction flow of two different times;
Flow process in the acid mist outbreak period is as follows: acidolysis waste gas enters deentrainment tower lower space, mainly contact at the rapid ball layer of pickling with the concentrated acid under the spray of pickling spray acid layer, solid material, the acid solution of acid mist outburst wrapped folder are washed down through spray acid elution, gas phase through overpickling enters silica gel layer, in silica gel layer, dry silica gel absorbs moisture content in acid gas; The acid gas of removing moisture content send acid absorption column to absorb through reversal valve, and acid gas is absorbed, and tail gas send tail gas absorber, the toxic emission after tail gas absorber purifies;
Flow process in air stirring phase is at ordinary times as follows: acidolysis waste gas enters deentrainment tower lower space, mainly contact at the rapid ball layer of pickling with the concentrated acid under the spray of pickling spray acid layer, solid material, the acid solution of air stirring wrapped folder are washed down through spray acid elution, gas phase through overpickling enters silica gel layer, in silica gel layer, wet silica gel removes moisture content and becomes dry; Waste gas main component is now exactly air, directly send tail gas absorber, the toxic emission after tail gas absorber purifies.
What pickling was got off send Producing Titanium Dioxide hydrolysis procedure to realize recovery containing raw material underflow liquid.
Silica gel layer at different times in different motion state, in acid mist outbreak period silica gel layer in fluid bed state, in air stirring phase at ordinary times in fixed bed state.
The application be embodied in following some:
(1) absorb moisture in acid mist with silica gel and reach demist effect, then absorb recovered acid with the concentrated sulfuric acid, reach sour recovery;
(2) moisture absorption of silica gel is that acidolysis different times completes respectively with being dried, another spent material and the energy;
(3) the rapid ball layer of pickling is set in deentrainment tower bottom and carries out pickling, acidolysis waste gas is first through pickling, and the solid material of wrapped folder, acid solution are washed down and are recycled through spray acid elution;
(4) implementation result: SO
3the rate of recovery>=99.0%.
Brief description of the drawings
Accompanying drawing 1 is a kind of acidolysis gas recovery system of the application schematic diagram
1-deentrainment tower in Fig. 1,2-reversal valve, 3-acid absorption column, 4-tail gas absorber, 5-acid absorbent recirculation pump, 6-tail gas absorbent recirculation pump, 7-tail gas absorbs rear pump, 8-pickling circulating pump, the rapid ball layer of 9-pickling, 10-pickling spray acid layer, 11-supports expanded metals, 12-silica gel layer, 13-limits expanded metals, and 14-absorbs gas distributor, 15-dry load layer, 16-absorbs sour spray thrower, and 17-absorbs demist layer, 18-tail air absorbing body distributor, 19-tail is inhaled packing layer, 20-tail imbibition spray thrower, and 21-tail is absorbed mist layer; A-acidolysis waste gas, B-purifying exhaust air, C-tail gas absorption liquid, D-sulfate, E-is containing raw material underflow liquid.
Detailed description of the invention
Embodiment 1
As shown in Figure 1, a kind of acidolysis gas recovery system, is one and utilizes acidolysis different times waste gas feature, in the acid mist outbreak period, applies silica gel and absorb moisture in acid mist in fluid bed, and acid gas absorbs recovered acid with the concentrated sulfuric acid; In air stirring phase at ordinary times, application waste gas dry silica gel, waste gas send vent gas treatment again; And before moisture, first washing acidolysis waste gas with the concentrated sulfuric acid in application silica gel absorbs acid mist, washing slurries return the system of acidolysis system recoveries raw material; Described acidolysis gas recovery system absorbs rear pump 7 by deentrainment tower 1, reversal valve 2, acid absorption column 3, tail gas absorber 4, sour absorbent recirculation pump 5, tail gas absorbent recirculation pump 6, tail gas and pickling circulating pump 8 forms.
Described deentrainment tower 1 acidolysis exhaust gas inlet is up provided with successively the rapid ball layer 9 of pickling, pickling spray acid layer 10, supports expanded metals 11, silica gel layer 12 and restriction expanded metals 13; Deentrainment tower 1 acidolysis exhaust gas inlet down arranges slurries gathering-device;
Described acid absorption column 3 acid gas imports are up provided with successively and absorb gas distributor 14, dry load layer 15, absorb sour spray thrower 16 and absorb demist layer 17;
Described tail gas absorber 4 exhaust gas inlet are up provided with tail air absorbing body distributor 18 successively, tail is inhaled packing layer 19, tail imbibition spray thrower 20 and tail and absorbed mist layer 21.
A kind of acidolysis gas recovery system of application the application, comprise the interaction flow of two different times, flow process in the acid mist outbreak period is as follows: acidolysis waste gas A enters deentrainment tower 1 lower space, mainly contact at the rapid ball layer 9 of pickling with the concentrated acid under 10 spray of pickling spray acid layer, solid material, the acid solution of acid mist outburst wrapped folder are washed down through spray acid elution, gas phase through overpickling enters silica gel layer 12 by supporting expanded metals 11, and in silica gel layer 12, dry silica gel absorbs moisture content in acid gas; The acid gas of removing moisture content send acid absorption column 3 through reversal valve 2, in acid absorption column 3 bottoms absorption acid solutions pump into acid absorption column 3 by sour absorbent recirculation pump 5, absorb sour spray thrower 16 and realize circulation, acid gas is through absorbing gas distributor 14 distributing gas, mainly in dry load layer 15, be absorbed, through absorbing demist layer 17, tail gas send tail gas absorber 4 again; In tail gas absorber 4 bottom tail gas absorption liquids pump into tail gas absorber 4 by tail suction circulating pump 6, tail suction spray thrower 20 is realized circulation, tail gas is through tail air absorbing body distributor 18 distributing gas, mainly inhale in packing layer 19 and be absorbed at tail, then absorb mist layer 21 through tail, purifying exhaust air B discharge;
Flow process in air stirring phase is at ordinary times as follows: acidolysis waste gas A enters deentrainment tower 1 lower space, mainly contact at the rapid ball layer 9 of pickling with the concentrated acid under 10 spray of pickling spray acid layer, solid material, the acid solution of air stirring wrapped folder are washed down through spray acid elution, gas phase through overpickling enters silica gel layer 12 by supporting expanded metals 11, in silica gel layer 12, wet silica gel removes moisture content and becomes dry; Waste gas main component is now exactly air, directly send tail gas absorber 4, the toxic emission after tail gas absorber 4 purifies.
Silica gel layer at different times in different motion state, in acid mist outbreak period silica gel layer in being limited to the fluid bed state of restriction expanded metals 13, in air stirring phase at ordinary times in fixed bed state.
The pickle of collecting in deentrainment tower 1 bottom pumps into deentrainment tower 1 pickling by pickling circulating pump 8 and sprays acid layer 10, realizes the circulation of pickle, and what pickling was got off send Producing Titanium Dioxide hydrolysis procedure to realize recovery containing raw material underflow liquid E.
Application the application acidolysis gas recovery system, SO
3the rate of recovery 99.0%.
The invention has the beneficial effects as follows: (1) absorbs moisture in acid mist with silica gel and reaches demist effect, then absorb recovered acid with the concentrated sulfuric acid, reach sour recovery; (2) moisture absorption of silica gel is that acidolysis different times completes respectively with being dried, another spent material and the energy; (3) solid material of waste gas wrapped folder is recycled; (4) implementation result: SO
3the rate of recovery>=99.0%.
The application is not limited to above-mentioned embodiment, those skilled in the art make to any apparent improvement of above-mentioned embodiment or change, can not exceed the protection domain of design of the present invention and claims.
Claims (1)
1. an acidolysis gas recovery system, is characterized in that:
Described acidolysis gas recovery system absorbs rear pump by deentrainment tower, reversal valve, acid absorption column, tail gas absorber, sour absorbent recirculation pump, tail gas absorbent recirculation pump, tail gas and pickling circulating pump forms;
Described deentrainment tower acidolysis exhaust gas inlet is up provided with successively the rapid ball layer of pickling, pickling spray acid layer, supports expanded metals, silica gel layer and restriction expanded metals; Deentrainment tower acidolysis exhaust gas inlet down arranges slurries gathering-device;
The import of described acid absorption column acid gas is up provided with successively absorption gas distributor, dry load layer, absorbs sour spray thrower and absorption demist layer;
Described tail gas absorber exhaust gas inlet is up provided with tail air absorbing body distributor successively, tail is inhaled packing layer, tail imbibition spray thrower and tail and absorbed mist layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420272255.9U CN203916416U (en) | 2014-05-21 | 2014-05-21 | A kind of acidolysis gas recovery system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420272255.9U CN203916416U (en) | 2014-05-21 | 2014-05-21 | A kind of acidolysis gas recovery system |
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| Publication Number | Publication Date |
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| CN203916416U true CN203916416U (en) | 2014-11-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420272255.9U Expired - Fee Related CN203916416U (en) | 2014-05-21 | 2014-05-21 | A kind of acidolysis gas recovery system |
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| Country | Link |
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| CN (1) | CN203916416U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104001407A (en) * | 2014-05-21 | 2014-08-27 | 淮南市明月环保科技有限责任公司 | Acidolysis waste gas recycling system |
-
2014
- 2014-05-21 CN CN201420272255.9U patent/CN203916416U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104001407A (en) * | 2014-05-21 | 2014-08-27 | 淮南市明月环保科技有限责任公司 | Acidolysis waste gas recycling system |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141105 Termination date: 20170521 |