CN202621023U - Smoke denitration device - Google Patents
Smoke denitration device Download PDFInfo
- Publication number
- CN202621023U CN202621023U CN 201220332823 CN201220332823U CN202621023U CN 202621023 U CN202621023 U CN 202621023U CN 201220332823 CN201220332823 CN 201220332823 CN 201220332823 U CN201220332823 U CN 201220332823U CN 202621023 U CN202621023 U CN 202621023U
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- Prior art keywords
- scr reactor
- flue gas
- smoke
- scr
- outlet
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- Expired - Fee Related
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Abstract
Provided is a smoke denitration device. The smoke denitration device comprises a liquid ammonia storage tank, a selective catalytic reduction (SCR) reactor, a dust-removing device and a smoke denitration device body. Smoke enters the SCR reactor after passing through the dust-removing device and the smoke denitration device body, outlets of the liquid ammonia storage tank and an evaporator are connected with the SCR reactor, and an outlet of the SCR reactor is connected with a dewatering device and an induced draft fan. The smoke denitration device can eliminate large dust particles in the smoke, and is good in denitration effect, few in harmful side-effects and worthy of popularization and application.
Description
Technical field
The utility model relates to the flue gases purification field, particularly a kind of equipment for denitrifying flue gas.
Background technology
Growing along with modern industrial technology, the contaminative flue gas that in the using energy source process, produces has become a very important problem to the harm that ecological environment and human lives bring.With heavy polluted industries such as power plant, heating boiler, glass manufacturings is example; The flue gas that produces after fuel such as coal tar, natural gas, petroleum coke powder even raw coal burn in boiler or kiln mainly comprises multiple harmful substances such as dust, oxysulfide, nitrogen oxide; If directly be disposed in the air; Not only pollution of ecological environment, harm humans are healthy, but also can corrode production equipment, and whole production technology is caused adverse effect.
The flue-gas denitrification of comparative maturity (being commonly called as denitration) technology adopts selective non-catalytic (SNCR) technology and selectivity catalysis (SCR) technology at present, mainly utilizes reducing agents such as ammonia, urea under certain condition with NOx reduction becoming N
2, the SNCR technology is carried out in 900～12000 ℃ temperature range, and denitration efficiency is relatively low, and for example the NOx discharge capacity of oil burning boiler only reduces by 30%～50%; SCR technology denitration efficiency significantly improves, yet owing to has used the very strong NH of corrosivity
3Or ammoniacal liquor, high to the requirement of pipeline equipment, increased equipment cost, and because NH
3Addition be difficult to accurate control, cause secondary pollution easily.
The environmental consciousness of Along with people's progressively strengthens, and standard limit of smog release is also strict day by day, therefore; The denitration efficiency of existing flue gases purification is still waiting further raising; On this basis, also should suitably control the pollutant control cost, to reduce the burden on enterprises through improving flue gases purification.。
The utility model content
The purpose of the utility model provides a kind ofly can effectively remove the big dust particle in the flue gas, and denitration effect is good, harmful few equipment for denitrifying flue gas of side reaction.
The technical scheme of the utility model is:
A kind of equipment for denitrifying flue gas; Comprise liquid ammonia storage tank and evaporimeter and SCR reactor; Also comprise dust arrester and flue gas desulfur device; Flue gas gets into the SCR reactor behind dust arrester and flue gas desulfur device, the outlet of said liquid ammonia storage tank and evaporimeter connects the SCR reactor, and the outlet of said SCR reactor is connected with dehydrator and air-introduced machine.
Preferably, said SCR reactor also is connected with heating system, and said heating system provides heat for the SCR reactor.
Preferably, the outlet of said SCR reactor is connected with dehydrator, air-introduced machine and chimney in turn through pipeline.
Preferably, said dust arrester is a gravitational precipitator.
The beneficial effect of the utility model is:
The utility model can be removed the big dust particle in the flue gas, and denitration effect is good, and harmful side reaction is few, and is little to the catalyst life influence.
Description of drawings
Fig. 1 is the structural representation of the utility model;
The specific embodiment
According to accompanying drawing, the utility model is carried out detailed narration.
Accompanying drawing 1 is the specific embodiment 1 of the utility model, and is as shown in the figure, and a kind of equipment for denitrifying flue gas comprises liquid ammonia storage tank and evaporimeter and SCR reactor, also comprises dust arrester and flue gas desulfur device, and preferably, said dust arrester is a gravitational precipitator.
Flue gas gets into the SCR reactor behind dust arrester and flue gas desulfur device, said SCR reactor also is connected with heating system, and said heating system provides heat for the SCR reactor.The outlet of said liquid ammonia storage tank and evaporimeter connects the SCR reactor, and the outlet of said SCR reactor is connected with dehydrator and air-introduced machine.
The outlet of said SCR reactor is connected with dehydrator, air-introduced machine and chimney in turn through pipeline.
Adopt the SCR treatment process; Catalyst is placed in the SCR reactor; The reducing agent liquid ammonia is vaporized by liquid ammonia storage tank and evaporator evaporation before injecting the SCR reactor; Ammonia after the vaporization and fully be blended in the SCR reactor reaction through the flue gas of dust arrester and flue gas desulfur device and go denitration is provided by heating system that temperature is at 360 ℃ in the heat maintenance SCR reactor, and the denitration rate of flue gas is more than 95%.
The outlet of SCR reactor is connected with dehydrator, air-introduced machine and chimney, carries out processed from the flue gas of SCR reactor output through dehydrator, remove moisture residual in the flue gas after, under the effect of air-introduced machine, send into chimney and discharge.
Claims (4)
1. equipment for denitrifying flue gas; Comprise liquid ammonia storage tank and evaporimeter and SCR reactor; It is characterized in that: also comprise dust arrester and flue gas desulfur device; Flue gas gets into the SCR reactor behind dust arrester and flue gas desulfur device, the outlet of said liquid ammonia storage tank and evaporimeter connects the SCR reactor, and the outlet of said SCR reactor is connected with dehydrator and air-introduced machine.
2. equipment for denitrifying flue gas according to claim 1 is characterized in that: said SCR reactor also is connected with heating system, and said heating system provides heat for the SCR reactor.
3. equipment for denitrifying flue gas according to claim 1 is characterized in that: the outlet of said SCR reactor is connected with dehydrator, air-introduced machine and chimney in turn through pipeline.
4. plant according to power and require 1 described equipment for denitrifying flue gas, it is characterized in that: said dust arrester is a gravitational precipitator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220332823 CN202621023U (en) | 2012-07-08 | 2012-07-08 | Smoke denitration device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220332823 CN202621023U (en) | 2012-07-08 | 2012-07-08 | Smoke denitration device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202621023U true CN202621023U (en) | 2012-12-26 |
Family
ID=47374268
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220332823 Expired - Fee Related CN202621023U (en) | 2012-07-08 | 2012-07-08 | Smoke denitration device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202621023U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105148696A (en) * | 2015-08-11 | 2015-12-16 | 南京中电环保科技有限公司 | Denitration and dust removal system and method for industrial kiln gas |
-
2012
- 2012-07-08 CN CN 201220332823 patent/CN202621023U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105148696A (en) * | 2015-08-11 | 2015-12-16 | 南京中电环保科技有限公司 | Denitration and dust removal system and method for industrial kiln gas |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121226 Termination date: 20130708 |