CN101474526A - Dual-purpose reaction desulfuration method and system with calcium-base absorbing agent - Google Patents
Dual-purpose reaction desulfuration method and system with calcium-base absorbing agent Download PDFInfo
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- CN101474526A CN101474526A CNA2008101636771A CN200810163677A CN101474526A CN 101474526 A CN101474526 A CN 101474526A CN A2008101636771 A CNA2008101636771 A CN A2008101636771A CN 200810163677 A CN200810163677 A CN 200810163677A CN 101474526 A CN101474526 A CN 101474526A
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- calcium
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- absorbing agent
- base absorbing
- deduster
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Abstract
The invention discloses a calcium-based asorbent double reaction desulphurization method and a system thereof. The system comprises a boiler, a reactor, a dust catcher, a draught fan and a chimney which are sequentially connected. The boiler is connected with an absorbent addition device. The lower part of the dust catcher is connected with a conditioning device. The outlet of the conditioning device is connected with a reactor. The first time desulphurization is carried out in the boiler. And then the second desulphurization is carried out in the reactor. The CaO part generated after the calcium-based asorbent is calcined in the boiler reacts with SO<X>. The other unreacted CaO enters into the reactor and the dust catcher along with the flue gas. The Cao which is unreacted after dust removal enters into the conditioning device, humidified with a conditioning ash containing CaO in the conditioning device; the activity of desulfurating agent is recovered, enters into the reactor and secondly reacts with the SO<x> in the flue gas. The invention not only can increase the utilization rate and the desulphurization efficiency of the desulfurating agent, but also does not need the desulfurating agent to be added in the exterior of the boiler and a desulfurating agent digestive organ, thus reducing the cost.
Description
[technical field]
The present invention relates to industrially desulfurized field, relate in particular to a kind of calcium-base absorbing agent dual-purpose reaction desulfuration method and system.
[technical background]
At present, industrially desulfurized desulfuration in furnace and the stove foreign cigarette qi exhaustion sulphur dual mode of mainly containing.
Desulfuration in furnace is to add desulfurizing agent in stove, because temperature is higher in the stove, unfavorable to desulphurization reaction, unreacted desulfurizing agent can not make full use of with fume emission, so the sorbent utilization of desulfuration in furnace is low, and desulfurization consuming cost height, and desulfuration efficiency is low.
Stove foreign cigarette qi exhaustion sulphur is to add desulfurizing agent to remove SO in flue gas
x, this mode also needs to add specially desulfurizing agent, and needs configuration desulfurizing agent digester, cost height.
[summary of the invention]
Purpose of the present invention is exactly in order to solve problems of the prior art, proposes a kind of calcium-base absorbing agent dual-purpose reaction desulfuration method and system, can improve the low and desulfuration efficiency of sorbent utilization, thereby reduce desulphurization cost.
For achieving the above object, patent of the present invention has proposed a kind of calcium-base absorbing agent dual-purpose reaction desulfuration system, comprise the boiler, reactor, deduster, air-introduced machine and the chimney that connect successively, be connected with the absorbent adding set on the described boiler, the below of described deduster is connected with quality-adjusting device, and the outlet of described quality-adjusting device is connected on the reactor.
As preferably, the bottom of described reactor is provided with unusual ash exhauster.
As preferably, the below of described deduster also is provided with out ash system.
As preferably, be provided with ash-valve between described deduster and the quality-adjusting device with function of measuring.
As preferably, the ash bucket of described deduster adopts taper ash bucket or ship shape ash bucket.
As preferably, have agitating device and water injector in the described quality-adjusting device.
For achieving the above object, patent of the present invention has also proposed a kind of calcium-base absorbing agent dual-purpose reaction desulfuration method, add calcium-base absorbing agent by the absorbent adding set in boiler, calcium-base absorbing agent resolves into CaO and realizes that the gas-solid desulphurization reaction generates CaSO under 800-1000 ℃ of high temperature
4Carry out once desulfurization, unreacted CaO enters in the reactor in the boiler then, enter in the deduster again, grey major part under deduster removes enters in the quality-adjusting device, ash unreacted CaO after the water spray damping recovers active in quality-adjusting device, and recirculation enters into reactor (3) and carries out the secondary desulfurization, and the flue gas in the deduster after the desulfurization is guided chimney into by air-introduced machine and discharged.
As preferably, ash is 1-5% through the water spray damping to the water content of combination ash in the quality-adjusting device.
As preferably, the temperature of flue gas is 110-180 ℃ in the described reactor, and reactor is square or rectangular reactor, and flue gas flow rate is 10-25m/s in the reactor.
As preferably, described deduster adopts sack cleaner or electric cleaner or electric bag dust collector.
The beneficial effect of patent of the present invention: calcium-base absorbing agent calcining back generates in the stove of the present invention CaO part and SO
xReaction, all the other unreacted CaO enter reactor, deduster with flue gas, enter into quality-adjusting device by unreacted CaO after the dedusting, contain the grey modified humidification of CaO in quality-adjusting device, recover the activity of desulfurizing agent, enter into the SO of reactor and flue gas
xPlay secondary response.The present invention not only can improve the utilization rate and the desulfuration efficiency of desulfurizing agent, need not add desulfurizing agent outside stove, and need not the desulfurizing agent digester, has reduced cost.
[description of drawings]
Fig. 1 is the structural representation of a kind of calcium-base absorbing agent dual-purpose reaction desulfuration of the present invention system.
[specific embodiment]
Consult Fig. 1, calcium-base absorbing agent dual-purpose reaction desulfuration system, comprise the boiler 2, reactor 3, deduster 5, air-introduced machine 8 and the chimney 9 that connect successively, be connected with absorbent adding set 1 on the described boiler 2, the below of described deduster 5 is connected with quality-adjusting device 6, and the outlet of described quality-adjusting device 6 is connected on the reactor 3, and the bottom of reactor 3 is provided with unusual ash exhauster 4, the below of deduster 5 also is provided with out ash system 7, is provided with the ash-valve with function of measuring between deduster 5 and the quality-adjusting device 6.
The calcium-base absorbing agent dual-purpose reaction desulfuration method adds calcium-base absorbing agent by the absorbent adding set in boiler, calcium-base absorbing agent resolves into CaO and realizes that the gas-solid desulphurization reaction generates CaSO under 800-1000 ℃ of high temperature
4Carry out once desulfurization, unreacted CaO enters in the reactor in the boiler then, enter in the deduster again, deduster removes grey major part down and enters in the quality-adjusting device, in quality-adjusting device ash after the water spray damping is 1-5% to the water content of combination ash, unreacted CaO recovery activity, recirculation enters into reactor 3 and carries out the secondary desulfurization, and the flue gas in the deduster after the desulfurization is guided chimney into by air-introduced machine and discharged.The temperature of flue gas is 110-180 ℃ in the reactor, and the outlet temperature of reactor is 60～90 ℃.
Add calcium-base absorbing agent by absorbent adding set 1 in boiler 2, calcium-base absorbing agent is calcined CaO part and the SO that the back generates in boiler 2
xReaction, all the other unreacted CaO enter reactor 3, deduster 5 with flue gas.Dust in flue gas and unreacted CaO are removed down in deduster 5, enter into quality-adjusting device 6 by ash-valve with function of measuring, the grey modified humidification that in quality-adjusting device 6, contains CaO, recover the activity of desulfurizing agent, through the ash of modified humidification, grey humidity is that 1%-5% enters into reactor 3, reduced flue-gas temperature, make flue-gas temperature reach 60～90 ℃, this is a desulfurization operating mode preferably, recovers the desulfurizing agent of activity and the SO in the flue gas this moment in the ash of modified humidification
xReact.The time of staying of flue gas in reactor 3 is 0.5-3s.Described quality-adjusting device 6 has agitating device and water injector, and the ash bucket of described deduster 5 can be taper ash bucket or ship shape ash bucket, and the ash bucket below is provided with the ash-valve with function of measuring.Deduster 5 adopts sack cleaner or electric cleaner or electric bag dust collector.
The foregoing description is to explanation of the present invention, is not limitation of the invention, any scheme after the simple transformation of the present invention is all belonged to protection scope of the present invention.
Claims (10)
1. calcium-base absorbing agent dual-purpose reaction desulfuration system, it is characterized in that: comprise the boiler (2), reactor (3), deduster (5), air-introduced machine (8) and the chimney (9) that connect successively, be connected with absorbent adding set (1) on the described boiler (2), the below of described deduster (5) is connected with quality-adjusting device (6), and the outlet of described quality-adjusting device (6) is connected on the reactor (3).
2. a kind of calcium-base absorbing agent dual-purpose reaction desulfuration as claimed in claim 1 system, it is characterized in that: the bottom of described reactor (3) is provided with unusual ash exhauster (4).
3. a kind of calcium-base absorbing agent dual-purpose reaction desulfuration as claimed in claim 1 system, it is characterized in that: the below of described deduster (5) also is provided with out ash system (7).
4. a kind of calcium-base absorbing agent dual-purpose reaction desulfuration as claimed in claim 1 system is characterized in that: be provided with the ash-valve with function of measuring between described deduster (5) and the quality-adjusting device (6).
5. as any one described a kind of calcium-base absorbing agent dual-purpose reaction desulfuration system in the claim 1 to 4, it is characterized in that: the ash bucket of described deduster (5) adopts taper ash bucket or ship shape ash bucket.
6. as any one described a kind of calcium-base absorbing agent dual-purpose reaction desulfuration system in the claim 1 to 4, it is characterized in that: described quality-adjusting device has agitating device and water injector in (6).
7. calcium-base absorbing agent dual-purpose reaction desulfuration method is characterized in that: add calcium-base absorbing agent by the absorbent adding set in boiler, calcium-base absorbing agent resolves into CaO and realizes that the gas-solid desulphurization reaction generates CaSO under 800-1000 ℃ of high temperature
4Carry out once desulfurization, unreacted CaO enters in the reactor in the boiler then, enter in the deduster again, grey major part under deduster removes enters in the quality-adjusting device, ash unreacted CaO after the water spray damping recovers active in quality-adjusting device, and recirculation enters into reactor (3) and carries out the secondary desulfurization, and the flue gas in the deduster after the desulfurization is guided chimney into by air-introduced machine and discharged.
8. a kind of calcium-base absorbing agent dual-purpose reaction desulfuration method as claimed in claim 7 is characterized in that: ash is 1-5% through the water spray damping to the water content of combination ash in the quality-adjusting device.
9. a kind of calcium-base absorbing agent dual-purpose reaction desulfuration method as claimed in claim 7 is characterized in that: the temperature of flue gas is 110-180 ℃ in the described reactor, and reactor is square or rectangular reactor, and flue gas flow rate is 10-25m/s in the reactor.
10. as any one described a kind of calcium-base absorbing agent dual-purpose reaction desulfuration method in the claim 7 to 9, it is characterized in that: described deduster adopts sack cleaner or electric cleaner or electric bag dust collector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101636771A CN101474526A (en) | 2008-12-19 | 2008-12-19 | Dual-purpose reaction desulfuration method and system with calcium-base absorbing agent |
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| Application Number | Priority Date | Filing Date | Title |
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| CNA2008101636771A CN101474526A (en) | 2008-12-19 | 2008-12-19 | Dual-purpose reaction desulfuration method and system with calcium-base absorbing agent |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102303957A (en) * | 2011-01-28 | 2012-01-04 | 圣达瀚科技有限公司 | Method and system for treating waste gas by combining dual-effect reactor and cement production |
| CN104338422A (en) * | 2013-07-29 | 2015-02-11 | 碧水蓝天环境工程有限公司 | Desulfurization device and desulphurization method thereof |
| CN108579356A (en) * | 2018-04-02 | 2018-09-28 | 安徽蓝天盈丰环保科技有限公司 | A kind of smoke desulfurizing dust-remover for boiler and method |
| CN111804131A (en) * | 2020-07-30 | 2020-10-23 | 威海市正大环保设备股份有限公司 | Two-stage desulfurization technology with downstream ash curtain |
-
2008
- 2008-12-19 CN CNA2008101636771A patent/CN101474526A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102303957A (en) * | 2011-01-28 | 2012-01-04 | 圣达瀚科技有限公司 | Method and system for treating waste gas by combining dual-effect reactor and cement production |
| CN104338422A (en) * | 2013-07-29 | 2015-02-11 | 碧水蓝天环境工程有限公司 | Desulfurization device and desulphurization method thereof |
| CN108579356A (en) * | 2018-04-02 | 2018-09-28 | 安徽蓝天盈丰环保科技有限公司 | A kind of smoke desulfurizing dust-remover for boiler and method |
| CN111804131A (en) * | 2020-07-30 | 2020-10-23 | 威海市正大环保设备股份有限公司 | Two-stage desulfurization technology with downstream ash curtain |
| CN111804131B (en) * | 2020-07-30 | 2022-02-15 | 威海市正大环保设备股份有限公司 | Downstream ash curtain two-stage desulfurization method |
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Application publication date: 20090708 |