CN203140020U - Thermal regeneration device for active semi-coke flue gas desulfurization and denitration agent - Google Patents
Thermal regeneration device for active semi-coke flue gas desulfurization and denitration agent Download PDFInfo
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- CN203140020U CN203140020U CN 201320052168 CN201320052168U CN203140020U CN 203140020 U CN203140020 U CN 203140020U CN 201320052168 CN201320052168 CN 201320052168 CN 201320052168 U CN201320052168 U CN 201320052168U CN 203140020 U CN203140020 U CN 203140020U
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Abstract
The utility model relates to a thermal regeneration device for an active semi-coke flue gas desulfurization and denitration agent. The thermal regeneration device comprises a hot blast stove, a circulating pump, an air cooler, a thermal regeneration furnace and a screening device, wherein the thermal regeneration furnace is divided into a feeding section, a heating section, a cooling section and a discharge section from top to bottom; the absorption saturated active semi-coke flue gas desulfurization and denitration agent is added into the thermal regeneration furnace from the top of the thermal regeneration furnace and slowly moves downward; after the coke-oven gas is burnt by the hot blast stove, mixed gas is generated; O2 which is treated by pressure swing adsorption and separation and water vapor are mixed together and filled into the thermal regeneration furnace from the heating section; heat exchange is carried out between the mixed gas of the O2 and the water vapor and the semi-coke flue gas desulfurization and denitration agent moving downward, and the semi-coke flue gas desulfurization and denitration agent is purged; after being heated and purged, the semi-coke is cooled by the cooling section and then discharged from the discharge section; the thermal regeneration of inactive semi-coke flue gas desulfurization and denitration agent can be finally completed by the screening device; and after the regeneration reaction, gas is discharged from the upper part of the heating section of the thermal regeneration furnace, is cooled by the air cooler and then is recycled by the circulating pump and a closed loop of the hot blast stove.
Description
Technical field
The utility model relates to a kind of regenerating unit, a kind of hot regenerating unit that utilizes flue gas and the agent of water vapour thermal regeneration active carbocoal flue gas desulfurization and denitrification of more specifically saying so.
Background technology
As everyone knows, in the dry flue gas desulphurization denitration demercuration process, applying modified active carbocoal carries out SO
2Catalytic oxidation and absorption with NOx can realize SO
2With effectively removing of NOx, and can make SO
2Change into sulfuric acid and nitric acid with NOx in the absorption of semicoke photocatalyst surface, reach the effect of enrichment.But simultaneously, in little/mesopore that the sulfuric acid that catalytic oxidation generates and nitric acid are stored in active carbocoal, occupied the activated adoption position, reduced the adsorption capacity of semicoke.In order to make the utilization of semicoke energy multiple cycles, need regenerate completely to the active carbocoal catalyst.
At present, the renovation process of semicoke mainly contains three kinds: WATER-WASHING METHOD, hot method of reproduction and ammoniacal liquor regeneration.
Wherein, the recovery time that washing regeneration needs is long, and water consumption is big, and washes that to obtain dilute sulfuric acid concentration very low, and value is not high; Washing regeneration is big for the diffusion power of ammoniacal liquor regeneration, and the recovery time is short, and can generate byproduct ammonium sulfate and ammonium nitrate, can be used as chemical fertilizer and recycle, but regeneration inadequately completely; Heat regeneration is relatively thorough, but energy consumption is big, and the active carbocoal loss is big, needs the regular replenishment virgin material.
Summary of the invention
At the problems referred to above, the purpose of this utility model provides a kind of simple in structure, hot regenerating unit that regeneration is used for the agent of active carbocoal flue gas desulfurization and denitrification completely.
Principle of the present utility model is that heat regeneration is proceeded in the semicoke flue gas desulfurization and denitrification agent after the ammoniacal liquor regeneration, provide heat that sulphur ammonium and the ammonium nitrate that the absorption of active carbocoal flue gas desulfurization and denitrification agent surface and reaction generate rinsed out by high-temperature flue gas and steam purging or from the outside, make the agent of active carbocoal flue gas desulfurization and denitrification obtain regeneration, recovery time is short like this, energy consumption is low, can also by-product sulphur ammonium and ammonium nitrate mother liquor, and reproduction ratio is more thorough.
The utility model comprises hot-blast stove, circulating pump, air cooler, hot regenerating furnace and screening plant, described hot regenerating furnace is divided into feed zone, bringing-up section, cooling section and discharge zone from top to bottom, adsorbing saturated active carbocoal flue gas desulfurization and denitrification agent self-heating regenerating furnace top adds, and slowly move down the gaseous mixture of oven gas through generating after the Combustion of Hot Air Furnace, the O after the transformation adsorbing separation
2Mix the back from the bottom feeding of hot regenerating furnace bringing-up section with water vapour, sweep with the semicoke flue gas desulfurization and denitrification agent heat exchange that moves down and to it and to blow, semicoke behind heating and the purging is discharged from discharge zone after the cooling section cooling, finally finishes the heat regeneration of inactivation semicoke flue gas desulfurization and denitrification agent again through screening plant; Gas is discharged from the top of hot regenerating furnace bringing-up section behind the regenerative response, utilizes through circulating pump and hot-blast stove closed cycle behind the air cooler air cooling again.
Heating flue gas of the present utility model is by the circulating pump recycled for multiple times, so energy consumption is lower; Active carbocoal flue gas desulfurization and denitrification agent after flue gas and water vapour are regenerated to ammoniacal liquor provides heat, and sweeps and blow, and the semicoke reproduction ratio is more thorough, and has desulphurization denitration activity preferably after the regeneration.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Wherein, 1. hot-blast stove; 2. circulating pump; 3. air cooler; 4. hot regenerating furnace; 5. screening plant; 6. charging rotary valve; 7. feed zone; 8. bringing-up section; 9. cooling section; 10. discharge zone; 11. roller-type discharging device; 12. discharge rotary valve.
The specific embodiment
Further specify the utility model below in conjunction with accompanying drawing and by instantiation.
As shown in Figure 1, the semicoke flue gas desulfurization and denitrification agent after the ammoniacal liquor regeneration enters hot regenerating furnace 4 from the feed zone 7 on top, passes through bringing-up section 8, cooling section 9 successively, continuously by gravity in hot regenerating furnace 4, discharges from discharge zone 10 at last.Meanwhile, the gaseous mixture of oven gas generation after hot-blast stove 1 burning, the O after the transformation adsorbing separation
2Being mixed with water vapour feeds hot regenerating furnace from the bottom of bringing-up section 8, sweeps with the semicoke flue gas desulfurization and denitrification agent contact heat-exchanging that moves down and to it and blows and wash, and sulphur ammonium and the ammonium nitrate of the absorption of semicoke surface and catalysis generation rinsed out.Top and bottom at hot regenerating furnace are equipped with charging rotary valve 6 and discharge rotary valve 12 respectively, cut off logistics by the inner rotation baffle plate, to prevent leaking of mist.Reaction back gas is discharged from the top of bringing-up section 8, and behind air cooler 3 air coolings, steam condensation is wherein got off again, and the residue flue gas is through circulating pump 2 and hot-blast stove 1 closed cycle utilization.The later half coke desulfurization denitrfying agent temperature of regenerating is about 350-550
οC, through cooling section 9 and the direct mixed heat transfer of fresh semicoke light flue gas desulfurization and denitrification agent that adds, cooling back semicoke drains into screening plant 5 through 11 equilibriums of roller-type discharging device, the broken little collection of semicoke after screening separates is melted down burning or is prepared active carbocoal desulphurization denitration catalyst again, and the bulky grain semicoke returns moving bed.
Concrete process condition of the present utility model is: water vapour volume content 10%-25% in the heating flue gas, O
2Content is 1%-3%, and all the other are N
2And CO
2The coke oven tolerance that consumes is 0.5-5.0m
3/ h, heat regeneration semicoke flue gas desulfurization and denitrification dosage 12.35-500.0Kg/h, additional fresh semicoke amount 0.5-500.0 Kg/h, regeneration temperature 350-550
οC, air speed 1500-3000h
-1, recovery time 0.5-2h.
Claims (3)
1. the hot regenerating unit of active carbocoal flue gas desulfurization and denitrification agent, it is characterized in that it comprises hot-blast stove, hot regenerating furnace and screening plant, described hot regenerating furnace is divided into feed zone, bringing-up section, cooling section and discharge zone from top to bottom, adsorbing saturated active carbocoal flue gas desulfurization and denitrification agent self-heating regenerating furnace top adds, and slowly move down, oven gas is through the gaseous mixture of the generation after the Combustion of Hot Air Furnace, the O after the transformation adsorbing separation
2Mix the back from the bottom feeding of hot regenerating furnace bringing-up section with water vapour, sweep with the semicoke flue gas desulfurization and denitrification agent heat exchange that moves down and to it and to blow, semicoke behind heating and the purging is discharged from discharge zone after the cooling section cooling, finally finishes the heat regeneration of inactivation semicoke flue gas desulfurization and denitrification agent again through screening plant.
2. hot regenerating unit according to claim 1 is characterized in that it also comprises air cooler and circulating pump, and the gas behind the regenerative response is discharged from the top of hot regenerating furnace bringing-up section, utilizes through circulating pump and hot-blast stove closed cycle behind the air cooler air cooling again.
3. hot regenerating unit according to claim 1, it is characterized in that semicoke flue gas desulfurization and denitrification agent after the regeneration of described hot regenerating furnace bringing-up section heat when being displaced downwardly to cooling section with the hot regenerating furnace of fresh semicoke flue gas desulfurization and denitrification agent heat exchange cooling back discharge of adding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320052168 CN203140020U (en) | 2013-01-30 | 2013-01-30 | Thermal regeneration device for active semi-coke flue gas desulfurization and denitration agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320052168 CN203140020U (en) | 2013-01-30 | 2013-01-30 | Thermal regeneration device for active semi-coke flue gas desulfurization and denitration agent |
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| Publication Number | Publication Date |
|---|---|
| CN203140020U true CN203140020U (en) | 2013-08-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320052168 Expired - Fee Related CN203140020U (en) | 2013-01-30 | 2013-01-30 | Thermal regeneration device for active semi-coke flue gas desulfurization and denitration agent |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104437377A (en) * | 2014-12-25 | 2015-03-25 | 江志鑫 | Regeneration method of flue-gas demercuration absorbent |
| CN107684824A (en) * | 2017-10-20 | 2018-02-13 | 国电科学技术研究院 | More cross-flow moving bed devices of bin |
| CN107812543A (en) * | 2016-09-14 | 2018-03-20 | 北京石油化工工程有限公司 | A kind of gasoline ultra-deep absorption desulfurization catalyst regeneration activating system and method |
| CN109789371A (en) * | 2016-09-26 | 2019-05-21 | 国际壳牌研究有限公司 | Regenerate the method for de- NOx catalyst |
-
2013
- 2013-01-30 CN CN 201320052168 patent/CN203140020U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104437377A (en) * | 2014-12-25 | 2015-03-25 | 江志鑫 | Regeneration method of flue-gas demercuration absorbent |
| CN107812543A (en) * | 2016-09-14 | 2018-03-20 | 北京石油化工工程有限公司 | A kind of gasoline ultra-deep absorption desulfurization catalyst regeneration activating system and method |
| CN107812543B (en) * | 2016-09-14 | 2020-06-30 | 北京石油化工工程有限公司 | Gasoline ultra-deep adsorption desulfurization catalyst regeneration activation system and method |
| CN109789371A (en) * | 2016-09-26 | 2019-05-21 | 国际壳牌研究有限公司 | Regenerate the method for de- NOx catalyst |
| US11471831B2 (en) | 2016-09-26 | 2022-10-18 | Shell Usa, Inc. | Method of regenerating a deNOx catalyst |
| CN107684824A (en) * | 2017-10-20 | 2018-02-13 | 国电科学技术研究院 | More cross-flow moving bed devices of bin |
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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: 20130821 Termination date: 20180130 |
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| CF01 | Termination of patent right due to non-payment of annual fee |