CN201445905U - Process unit for waste gas utilization in gas desulfurization process by liquid phase catalyzed oxidation - Google Patents
Process unit for waste gas utilization in gas desulfurization process by liquid phase catalyzed oxidation Download PDFInfo
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- CN201445905U CN201445905U CN2009200429435U CN200920042943U CN201445905U CN 201445905 U CN201445905 U CN 201445905U CN 2009200429435 U CN2009200429435 U CN 2009200429435U CN 200920042943 U CN200920042943 U CN 200920042943U CN 201445905 U CN201445905 U CN 201445905U
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- desulfurization
- regeneration tower
- desulfurization regeneration
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Abstract
The utility model discloses a process unit for waste gas utilization in gas desulfurization process by liquid phase catalyzed oxidation. The desulfurization process by liquid phase catalyzed oxidation comprises three grades of desulfurization regeneration towers that are connected in series; the gas is subjected to desulfurization and decyanation in the grade-one desulfurization regeneration tower and then sequentially enters the grade-two desulfurization regeneration tower and the grade-three desulfurization regeneration tower for desulfurization and decyanation; a desulfurization circulation solution in the grade-three desulfurization regeneration tower is pressurized by a desulfurization solution circulation pump and self-inhales fresh airs by an injection regenerator to carry out oxidation and regeneration of the desulfurization solution; the waste gas discharged by the next grade of desulfurization regeneration tower enters the air-inhaling hole of the previous grade of desulfurization regeneration tower; and the waste gas of the grade-one desulfurization regeneration tower is exhausted out of an outlet. In the utility model, the waste gas in the three grades of the desulfurization regeneration towers that are connected in series in the prior art are optimized and utilized; the waste gas generated in the desulfurization regeneration tower at the rear end is reversely returned to the regeneration section of the desulfurization regeneration tower of the front end, so that the oxygen and ammonia are sufficiently reacted and utilized, therefore, the emission of the pollutant is effectively reduced, the air pollution is prevented, and the utilization ratios of the oxygen and the ammonia are improved.
Description
Technical field
The utility model relates to a kind of gas liquid phase catalytic oxidation sulfur removal technology, is specifically related to the process unit of exhaust gas utilization in a kind of gas liquid phase catalytic oxidation sulfur removal technology.
Background technology
When adopting liquid phase catalytic oxidation to carry out gas sweetening, the doctor solution that has absorbed hydrogen sulfide need be recycling through oxidation regeneration ability, it is to pressurize by the doctor solution circulating pump that liquid phase catalytic oxidation carries out the gas sweetening decyanation technology, to its oxidation regeneration, the toxic emission that the regeneration back produces is in air through jet regeneration device air self-suction.For the desulfurization regeneration tower of series connection, every grade of desulfurization regeneration tower of former technology all absorbs air regenesis, and the waste gas of generation is discharging separately separately also, and the theoretical oxygen amount in the regeneration off gases is 18.8%.During regenerative response in the air oxygen amount only reduce 10.4%, in waste gas, contain 3 to 6g/m
3Ammonia.Environment has promptly been polluted in the direct discharging of this part waste gas has also wasted valuable ammonia alkali, is unfavorable for the comprehensive utilization of ammonia alkali.
The utility model content
Goal of the invention: at the deficiencies in the prior art, the purpose of this utility model provides the process unit of exhaust gas utilization in a kind of gas liquid phase catalytic oxidation sulfur removal technology, to realize the comprehensive utilization of ammonia alkali, reduces the pollution of environment.
Technical scheme: in order to realize the foregoing invention purpose, the technical solution adopted in the utility model is:
The process unit of exhaust gas utilization in a kind of gas liquid phase catalytic oxidation sulfur removal technology, gas enters second level desulfurization regeneration tower successively behind first order desulfurization regeneration tower desulfuration and decyanation and third level desulfurization regeneration tower carries out desulfuration and decyanation.Third level desulfurization regeneration tower desulphurization circulating liquid carries out the doctor solution oxidation regeneration by the pressurization of doctor solution circulating pump by jet regeneration device self-priming fresh air.A part of waste gas of third level desulfurization regeneration tower discharging is received the air inlet pipe mouth of pipe of second level desulfurization regeneration tower jet regeneration device; Be that second level desulfurization regeneration tower desulphurization circulating liquid is pressurizeed by the doctor solution circulating pump, in the time of by jet regeneration device self-priming fresh air, suck from the part waste gas of third level desulfurization regeneration tower discharging; A part of waste gas of second level desulfurization regeneration tower discharging is received the air inlet pipe mouth of pipe of first order desulfurization regeneration tower jet regeneration device, be that first order desulfurization regeneration tower desulphurization circulating liquid is pressurizeed by the doctor solution circulating pump, in the time of by jet regeneration device self-priming fresh air, suck from the part waste gas of second level desulfurization regeneration tower discharging; The Waste gas outlet discharging of first order desulfurization regeneration column overhead.
The oxidizing gas that third level desulfurization regeneration tower sucks all is a fresh air.The oxidizing gas that the first order and second level desulfurization regeneration tower suck sucks whole waste gas by valve regulated, or the gaseous mixture of part waste gas and part fresh air.The air intake duct of first order desulfurization regeneration tower and second level desulfurization regeneration tower respectively has two branch roads, is provided with valve on branch road, controls the amount that sucks waste gas and fresh air by control valve.
It is the adding that desulfurization regeneration towers at different levels can be regulated exhaust gas discharging and fresh air in real time according to the real reaction needs in the desulphurization system, generally rear end desulfurization regeneration tower exhaust gas discharged can obtain utilizing fully, and need not be discharged in the air, reduced the disposal of pollutants point, made full use of ammonia and the oxygen in the waste gas, made the more energy-conservation more environmental protection of whole desulphurization system.Main absorption occurs in the first order desulfurization regeneration tower in Chuan Lian the desulfurization regeneration system by analysis, because the hydrogen sulfide that third level desulfurization regeneration tower and second level desulfurization regeneration tower absorb is lower, so required oxidation regeneration air capacity is few, a large amount of inhaled airs are not participated in reaction and promptly are discharged from, also contain a large amount of oxygen in the exhaust gas discharged, also contain a spot of ammonia in addition in the waste gas, for reducing pollutant emission, prevent air pollution, improve the utilization rate of oxygen and ammonia
Beneficial effect: the utility model is optimized utilization with the waste gas in three grades of desulfurization regeneration towers of connecting in the former technology, the reverse regenerator section that turns back to front end desulfurization regeneration tower of waste gas with the generation of rear end desulfurization regeneration tower, make wherein oxygen and ammonia be able to fully reaction utilization, effectively reduce pollutant emission, prevent air pollution, improve the utilization rate of oxygen and ammonia.
Description of drawings
Accompanying drawing is the schematic diagram of the process unit of exhaust gas utilization in the gas liquid phase catalytic oxidation sulfur removal technology of the present utility model.
The specific embodiment
Below in conjunction with accompanying drawing to originally being further explained.
As shown in drawings, be the process unit of exhaust gas utilization in the gas liquid phase catalytic oxidation sulfur removal technology of the present utility model.
The air intake duct of the air intake duct of first order desulfurization regeneration tower 1 and second level desulfurization regeneration tower 2 all has two branch roads, and valve is set on branch road, controls the amount that sucks waste gas and fresh air by control valve.
It is the adding that desulfurization regeneration towers at different levels can be regulated exhaust gas discharging and fresh air in real time according to the real reaction needs in the desulphurization system, generally rear end desulfurization regeneration tower exhaust gas discharged can obtain utilizing fully, and need not be discharged in the air, reduced the disposal of pollutants point, made full use of ammonia and the oxygen in the waste gas, made the more energy-conservation more environmental protection of whole desulphurization system.Ammon amount is from 3～6g/m in the waste gas
3Reduce to 2～3g/m of quite former exhausted air quantity
3, promptly the waste gas total displacement reduces about 40%.
Claims (2)
1. the process unit of exhaust gas utilization in the gas liquid phase catalytic oxidation sulfur removal technology, it is characterized in that: gas liquid phase catalytic oxidation sulfur removal technology device comprises three grades of desulfurization regeneration towers of series connection, gas enters the second level successively behind first order desulfurization regeneration tower desulfuration and decyanation and third level desulfurization regeneration tower carries out desulfuration and decyanation, third level desulfurization regeneration tower desulphurization circulating liquid carries out the doctor solution oxidation regeneration by the pressurization of doctor solution circulating pump by jet regeneration device self-priming fresh air; Back first grade desulfurizing regenerator exhaust gas discharged inserts the air entry of previous stage desulfurization regeneration tower; The waste gas of first order desulfurization regeneration tower is discharged from floss hole.
2. the process unit of exhaust gas utilization in the gas liquid phase catalytic oxidation sulfur removal technology according to claim 1, it is characterized in that: the air intake duct of first order desulfurization regeneration tower and second level desulfurization regeneration tower respectively has two branch roads, on branch road, be provided with valve, control the amount that sucks waste gas and fresh air by control valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200429435U CN201445905U (en) | 2009-06-29 | 2009-06-29 | Process unit for waste gas utilization in gas desulfurization process by liquid phase catalyzed oxidation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200429435U CN201445905U (en) | 2009-06-29 | 2009-06-29 | Process unit for waste gas utilization in gas desulfurization process by liquid phase catalyzed oxidation |
Publications (1)
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| CN201445905U true CN201445905U (en) | 2010-05-05 |
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| CN2009200429435U Expired - Fee Related CN201445905U (en) | 2009-06-29 | 2009-06-29 | Process unit for waste gas utilization in gas desulfurization process by liquid phase catalyzed oxidation |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105038865A (en) * | 2015-06-12 | 2015-11-11 | 宁波科新化工工程技术有限公司 | Coal gas wet oxidation desulfurizing tower type regeneration tail gas recycling process and device thereof |
| CN105311921A (en) * | 2015-11-09 | 2016-02-10 | 宁波科新化工工程技术有限公司 | Collection and treatment process for tail gas emitted by coking equipment devices |
| CN109897709A (en) * | 2018-12-24 | 2019-06-18 | 中石化石油工程技术服务有限公司 | The oxidation regeneration device of matrix form combination |
| CN115305121A (en) * | 2021-05-08 | 2022-11-08 | 宝武碳业科技股份有限公司 | Process method for improving oxygen utilization rate in HPF (high pressure fluidized bed) desulfurization regeneration air |
-
2009
- 2009-06-29 CN CN2009200429435U patent/CN201445905U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105038865A (en) * | 2015-06-12 | 2015-11-11 | 宁波科新化工工程技术有限公司 | Coal gas wet oxidation desulfurizing tower type regeneration tail gas recycling process and device thereof |
| CN105311921A (en) * | 2015-11-09 | 2016-02-10 | 宁波科新化工工程技术有限公司 | Collection and treatment process for tail gas emitted by coking equipment devices |
| CN109897709A (en) * | 2018-12-24 | 2019-06-18 | 中石化石油工程技术服务有限公司 | The oxidation regeneration device of matrix form combination |
| CN115305121A (en) * | 2021-05-08 | 2022-11-08 | 宝武碳业科技股份有限公司 | Process method for improving oxygen utilization rate in HPF (high pressure fluidized bed) desulfurization regeneration air |
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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 |
Granted publication date: 20100505 Termination date: 20150629 |
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| EXPY | Termination of patent right or utility model |