CN107569989A - A kind of method that Peracetic acid and ozone aoxidize flue gas desulfurization and denitrification jointly - Google Patents
A kind of method that Peracetic acid and ozone aoxidize flue gas desulfurization and denitrification jointly Download PDFInfo
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- CN107569989A CN107569989A CN201710978363.6A CN201710978363A CN107569989A CN 107569989 A CN107569989 A CN 107569989A CN 201710978363 A CN201710978363 A CN 201710978363A CN 107569989 A CN107569989 A CN 107569989A
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Abstract
The invention discloses a kind of method that Peracetic acid and ozone aoxidize flue gas desulfurization and denitrification jointly, it is characterised in that：Comprise the following steps：（1）Flue gas is passed through to reactor and the Peracetic acid after atomization process is reacted；Wherein Peracetic acid and NOXMol ratio be 0.4：1‑2:1, Peracetic acid and SOXMol ratio be 0.4：1‑2:1；Reaction time is 0.8 3S, and reaction temperature is 25 DEG C 80 DEG C；（2）To step（1）Gas phase ozone is passed through in reacted reactor to be reacted；Wherein ozone and NOXMol ratio be 0.3：1‑2:1, ozone and SOXMol ratio be 0.3：1‑2:1；Reaction time is 1 3S, and reaction temperature is 25 DEG C 90 DEG C；（3）Reacted gas absorbs through water.The present invention aoxidizes flue gas desulfurization and denitrification jointly using ozone and Peracetic acid, not only reacts simple and quick, and desulphurization denitration rate is high, and course of reaction is few, and reaction product is environmentally friendly.
Description
Technical field
The present invention relates to a kind of method that Peracetic acid and ozone aoxidize flue gas desulfurization and denitrification jointly, belong to environment protection method skill
Art field.
Background technology
Flue gas and desulfurizing and denitrifying technology mainly has three classes, and the first kind is the combination technique of flue gas desulfurization and denitrating flue gas；
Second class is using adsorbent while removes SOX and NOX；3rd class is that existing flue gas desulfurization (FGD) system is transformed
(denitrfying agent is such as added in doctor solution), increase denitration function.It is applied at present in the method for actual flue gas desulfurization and denitrification
In the presence of：Floor space is big；Operating cost is high；Energy resource consumption is big；Denitration rate is low；In place of the deficiencies of secondary pollution can be produced.
The content of the invention
The purpose of the present invention is intended to make up the deficiency of existing desulphurization denitration technology, there is provided a kind of Peracetic acid and ozone are total to
With the method for oxidation flue gas desulfurization and denitrification, this method can realize simple efficient desulphurization denitration.
The purpose of the present invention and solves its technical problem underlying using following technical scheme to realize：A kind of peroxide second
The method that acid and ozone aoxidize flue gas desulfurization and denitrification jointly, comprises the following steps：
（1）Flue gas is passed through to reactor and the Peracetic acid after atomization process is reacted；Wherein Peracetic acid and NOX's
Mol ratio is 0.4：1-2:1, Peracetic acid and SOXMol ratio be 0.4：1-2:1；Reaction time is 0.8-3S, reaction temperature
For 25 DEG C -80 DEG C；
（2）To step（1）Gas phase ozone is passed through in reacted reactor to be reacted；Wherein ozone and NOXMol ratio be
0.3：1-2:1, ozone and SOXMol ratio be 0.3：1-2:1；Reaction time is 1-3S, and reaction temperature is 25 DEG C -90 DEG C；
（3）Reacted gas absorbs through water.
Step（1）In, the mass fraction of Peracetic acid is 20%-40%.
The present invention has clear advantage and beneficial effect compared with prior art.From above technical scheme, this hair
In bright method, the oxidability of ozone is extremely strong, and the reaction product of ozone is oxygen, so it is a kind of Strong oxdiative of high-efficiency cleaning
Agent, Peracetic acid obtain more economical simple.This method aoxidizes flue gas desulfurization and denitrification jointly using ozone and Peracetic acid, not only instead
Should be simple and quick, and desulphurization denitration rate is high, and course of reaction is few, and reaction product is environmentally friendly.
Embodiment
Below in conjunction with preferred embodiment, taken off to aoxidizing flue gas jointly according to a kind of Peracetic acid proposed by the present invention and ozone
Method embodiment, feature and its effect of sulphur denitration, describe in detail as after.
A kind of method that Peracetic acid and ozone aoxidize flue gas desulfurization and denitrification jointly, comprises the following steps：
（1）Flue gas is passed through to reactor and the Peracetic acid after atomization process is reacted；Wherein Peracetic acid and NOX's
Mol ratio is 0.4：1-2:1, Peracetic acid and SOXMol ratio be 0.4：1-2:1；Reaction time is 0.8-3S, reaction temperature
For 25 DEG C -80 DEG C；
（2）To step（1）Gas phase ozone is passed through in reacted reactor to be reacted；Wherein ozone and NOXMol ratio be
0.3：1-2:1, ozone and SOXMol ratio be 0.3：1-2:1；Reaction time is 1-3S, and reaction temperature is 25 DEG C -90 DEG C；
（3）Reacted gas absorbs through water.
The step（1）In, the mass fraction of Peracetic acid is 20%-40%.
Embodiment 1：Flue gas and the Peracetic acid reaction after atomization process are passed first into, wherein：Take the anti-of reactor
It is 25 DEG C to answer temperature；Peracetic acid and NOXMol ratio be 0.4：1；Peracetic acid and SOXMol ratio be 0.4：1；During reaction
Between be 0.8S；The mass fraction of Peracetic acid is passed through flue gas and the Peracetic acid reaction after atomization process, Ran Houji for 20%
It is continuous to be passed through gas phase ozone and reacted, wherein：It is 25 DEG C to take with the reaction temperature of gas phase ozone；Ozone and NOXMol ratio be
0.3:1；Ozone and SOXMol ratio be 0.3：1 reaction time was 1S, was absorbed after the completion of reaction by water.Using this method, measure
Desulfurization degree is 97%, and denitration rate is 95%.
Embodiment 2：Flue gas and the Peracetic acid reaction after atomization process are passed first into, wherein：Take the anti-of reactor
It is 50 DEG C to answer temperature；Peracetic acid and NOXMol ratio be 1：1；Peracetic acid and SOXMol ratio be 1：1；Reaction time is
1S；The mass fraction of Peracetic acid is passed through flue gas and the Peracetic acid reaction after atomization process for 30%, then proceedes to be passed through
Gas phase ozone is reacted, wherein：It is 40 DEG C to take with the reaction temperature of gas phase ozone；Ozone and NOXMol ratio be 1:1；It is smelly
Oxygen and SOXMol ratio be 1：1 reaction time was 1S, was absorbed after the completion of reaction by water.Using this method, measuring desulfurization degree is
98%, denitration rate is 97%.
Embodiment 3：Flue gas and the Peracetic acid reaction after atomization process are passed first into, wherein：Take the anti-of reactor
It is 80 DEG C to answer temperature；Peracetic acid and NOXMol ratio be 2：1；Peracetic acid and SOXMol ratio be 2：1；Reaction time is
3S；The mass fraction of Peracetic acid is passed through flue gas and the Peracetic acid reaction after atomization process for 20%, then proceedes to be passed through
Gas phase ozone is reacted, wherein：It is 80 DEG C to take with the reaction temperature of gas phase ozone；Ozone and NOXMol ratio be 2:1；It is smelly
Oxygen and SOXMol ratio be 2：1 reaction time was 3S, was absorbed after the completion of reaction by water.Using this method, measuring desulfurization degree is
99%, denitration rate is 99%.
The above described is only a preferred embodiment of the present invention, not making any formal limitation to the present invention, appoint
Without departing from technical solution of the present invention content, what the technical spirit according to the present invention was made to above example any simply repaiies for what
Change, equivalent variations and modification, in the range of still falling within technical solution of the present invention.
Claims (2)
1. a kind of method that Peracetic acid and ozone aoxidize flue gas desulfurization and denitrification jointly, it is characterised in that：Comprise the following steps：
（1）Flue gas is passed through to reactor and the Peracetic acid after atomization process is reacted；Wherein Peracetic acid and NOX's
Mol ratio is 0.4：1-2:1, Peracetic acid and SOXMol ratio be 0.4：1-2:1；Reaction time is 0.8-3S, reaction temperature
For 25 DEG C -80 DEG C；
（2）To step（1）Gas phase ozone is passed through in reacted reactor to be reacted；Wherein ozone and NOXMol ratio be
0.3：1-2:1, ozone and SOXMol ratio be 0.3：1-2:1；Reaction time is 1-3S, and reaction temperature is 25 DEG C -90 DEG C；
（3）Reacted gas absorbs through water.
2. the method that a kind of Peracetic acid according to claim 1 and ozone aoxidize flue gas desulfurization and denitrification jointly, its feature
It is：The step（1）In, the mass fraction of Peracetic acid is 20%-40%.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710978363.6A CN107569989A (en) | 2017-10-19 | 2017-10-19 | A kind of method that Peracetic acid and ozone aoxidize flue gas desulfurization and denitrification jointly |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710978363.6A CN107569989A (en) | 2017-10-19 | 2017-10-19 | A kind of method that Peracetic acid and ozone aoxidize flue gas desulfurization and denitrification jointly |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0274823A1 (en) * | 1986-11-14 | 1988-07-20 | Southern Water Services Limited | Improvements in methods and compositions for gas deodorisation |
| US5639434A (en) * | 1994-09-19 | 1997-06-17 | Tampella Power Oy | Process for removing nitrogen oxides from the flue gases of a pulp mill |
| CN103638809A (en) * | 2013-12-13 | 2014-03-19 | 江苏大学 | Method and system for removing mercury from optical flue with air cooling device |
| US20160023927A1 (en) * | 2014-07-23 | 2016-01-28 | Ecolab Usa Inc. | Hydrogen sulfide abatement in geothermal facilities |
| CN105771600A (en) * | 2016-04-12 | 2016-07-20 | 刘杨先 | Method and device for integrally removing multiple pollutants in tail gas through plant ash seriflux |
| CN106390711A (en) * | 2016-06-21 | 2017-02-15 | 秦皇岛玻璃工业研究设计院 | A denitration oxidant for glass melting furnace flue gas, a denitration device and a denitration method |
-
2017
- 2017-10-19 CN CN201710978363.6A patent/CN107569989A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0274823A1 (en) * | 1986-11-14 | 1988-07-20 | Southern Water Services Limited | Improvements in methods and compositions for gas deodorisation |
| US5639434A (en) * | 1994-09-19 | 1997-06-17 | Tampella Power Oy | Process for removing nitrogen oxides from the flue gases of a pulp mill |
| CN103638809A (en) * | 2013-12-13 | 2014-03-19 | 江苏大学 | Method and system for removing mercury from optical flue with air cooling device |
| US20160023927A1 (en) * | 2014-07-23 | 2016-01-28 | Ecolab Usa Inc. | Hydrogen sulfide abatement in geothermal facilities |
| CN105771600A (en) * | 2016-04-12 | 2016-07-20 | 刘杨先 | Method and device for integrally removing multiple pollutants in tail gas through plant ash seriflux |
| CN106390711A (en) * | 2016-06-21 | 2017-02-15 | 秦皇岛玻璃工业研究设计院 | A denitration oxidant for glass melting furnace flue gas, a denitration device and a denitration method |
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Application publication date: 20180112 |
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