CN203090757U - Desulfurization and denitrification system for boiler smoke - Google Patents
Desulfurization and denitrification system for boiler smoke Download PDFInfo
- Publication number
- CN203090757U CN203090757U CN 201320055656 CN201320055656U CN203090757U CN 203090757 U CN203090757 U CN 203090757U CN 201320055656 CN201320055656 CN 201320055656 CN 201320055656 U CN201320055656 U CN 201320055656U CN 203090757 U CN203090757 U CN 203090757U
- Authority
- CN
- China
- Prior art keywords
- desulfurization
- boiler smoke
- scr reactor
- desulfuration
- smoke
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000006477 desulfuration reaction Methods 0.000 title claims abstract description 27
- 239000000779 smoke Substances 0.000 title claims abstract description 17
- 230000023556 desulfurization Effects 0.000 title abstract description 12
- 238000010521 absorption reaction Methods 0.000 claims abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 5
- 239000007788 liquid Substances 0.000 claims abstract description 4
- 230000003197 catalytic effect Effects 0.000 claims description 7
- 150000004767 nitrides Chemical class 0.000 claims description 6
- 239000007921 spray Substances 0.000 claims description 4
- 239000000428 dust Substances 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 6
- 238000000034 method Methods 0.000 abstract description 3
- 239000002245 particle Substances 0.000 abstract description 3
- 239000003054 catalyst Substances 0.000 abstract description 2
- 238000010531 catalytic reduction reaction Methods 0.000 abstract 1
- 238000005507 spraying Methods 0.000 abstract 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 9
- 239000003546 flue gas Substances 0.000 description 9
- 239000007789 gas Substances 0.000 description 5
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000007086 side reaction Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 235000011114 ammonium hydroxide Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000004202 carbamide Substances 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 239000011280 coal tar Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000002006 petroleum coke Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- XTQHKBHJIVJGKJ-UHFFFAOYSA-N sulfur monoxide Chemical compound S=O XTQHKBHJIVJGKJ-UHFFFAOYSA-N 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Landscapes
- Treating Waste Gases (AREA)
Abstract
The utility model relates to a desulfurization and denitrification system for boiler smoke. The desulfurization and denitrification system comprises a dust remover and an SCR (selective catalytic reduction) reactor, wherein a desulfurization absorption tower is installed between an air outlet of the dust remover and an air inlet of the SCR reactor; a heat exchanger is also arranged at the air inlet of the dust remover for carrying out heat exchange on absorption liquid of the desulfurization absorption tower and the boiler smoke; and a clear water spraying tower, a dewaterer and an induced draft fan are sequentially installed at the air outlet of the SCR reactor. By utilizing the desulfurization and denitrification system, large particles of dust in the smoke can be removed by arranging a cyclone separator, and desulfurization operation is carried out firstly before a denitrification process, and therefore, the impact of to-be-tested smoke on the service life of a catalyst is little, harmful side effects are few, and the desulfurization effect of the SCR reactor is good.
Description
Technical field
The utility model relates to a kind of system for desulfuration and denitration of boiler smoke, belongs to gas cleaning equipment technology field.
Background technology
Growing along with modern industrial technology, the contaminative flue gas that produces in the using energy source process 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 boilers 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 health, but also can corrode production equipment, whole production technology is caused adverse effect.The boiler flue gas desulfurization technology of taking off of comparative maturity is to adopt 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, the requirement height to pipeline equipment has increased equipment cost, and because NH
3Addition be difficult to accurate control, cause secondary pollution easily.
The utility model content
Technical problem to be solved in the utility model is, overcomes the shortcoming of prior art, and a kind of big dust particle that can effectively remove in the flue gas is provided, and desulfurization off sulfide effect is good, harmful few flue gas desulfurization and denitrification system of side reaction.
In order to solve above technical problem, the utility model provides a kind of system for desulfuration and denitration of boiler smoke, comprise deduster and SCR reactor, desulfuration absorbing tower is installed at the air inlet place of described deduster gas outlet and SCR reactor, described deduster air inlet place also is provided with heat exchanger, and the absorption liquid and the boiler smoke of described desulfuration absorbing tower carried out heat exchange; Place, gas outlet at described SCR reactor also is equipped with clear water spray column, dehydrator and air-introduced machine successively.
The technical scheme that the utility model further limits is: the system for desulfuration and denitration of aforesaid boiler smoke, described deduster are cyclone separator, can realize continuous operation, good dedusting effect.
Further, the system for desulfuration and denitration of aforesaid boiler smoke is provided with three layers of nitride at least and absorbs Catalytic Layer in the described SCR reactor, and described nitride absorbs the space increase gradually from top to bottom of Catalytic Layer.
The beneficial effects of the utility model are: the utility model can be removed big dust particle in the flue gas by cyclone separator is set, and before denitrating technique, carry out desulfurization operations earlier, make pending flue gas little to the catalyst life influence, harmful side reaction is few, and the denitration effect of SCR reactor is good.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
The specific embodiment
Embodiment 1
The system for desulfuration and denitration of a kind of boiler smoke that present embodiment provides, structure as shown in Figure 1, comprise cyclone separator 1 and SCR reactor 2, in SCR reactor 2, be provided with three layers of nitride and absorb Catalytic Layer, and described nitride absorbs the space increase gradually from top to bottom of Catalytic Layer; Desulfuration absorbing tower 3 is installed at the air inlet place of the gas outlet of cyclone separator 1 and SCR reactor 2, and cyclone separator 1 air inlet place also is provided with heat exchanger 4, and the absorption liquid and the boiler smoke of desulfuration absorbing tower carried out heat exchange; Place, gas outlet at the SCR reactor also is equipped with clear water spray column 5, dehydrator 6 and air-introduced machine 7 successively through pipeline, to be blended in the absorbent of handling in the flue gas of back by the clear water spray column eliminates, avoid secondary pollution, will handle qualified flue gas by dehydrator and air-introduced machine again and deliver to chimney 8 and discharge.
In addition to the implementation, the utility model can also have other embodiments.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop on the protection domain of the utility model requirement.
Claims (3)
1. the system for desulfuration and denitration of a boiler smoke, comprise deduster and SCR reactor, it is characterized in that: desulfuration absorbing tower is installed at the air inlet place of described deduster gas outlet and SCR reactor, described deduster air inlet place also is provided with heat exchanger, and the absorption liquid and the boiler smoke of described desulfuration absorbing tower carried out heat exchange; Place, gas outlet at described SCR reactor also is equipped with clear water spray column, dehydrator and air-introduced machine successively.
2. the system for desulfuration and denitration of boiler smoke as claimed in claim 1, it is characterized in that: described deduster is a cyclone separator.
3. the system for desulfuration and denitration of boiler smoke as claimed in claim 1 is characterized in that: be provided with three layers of nitride in the described SCR reactor at least and absorb Catalytic Layer, and described nitride absorbs the space increase gradually from top to bottom of Catalytic Layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320055656 CN203090757U (en) | 2013-01-31 | 2013-01-31 | Desulfurization and denitrification system for boiler smoke |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320055656 CN203090757U (en) | 2013-01-31 | 2013-01-31 | Desulfurization and denitrification system for boiler smoke |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203090757U true CN203090757U (en) | 2013-07-31 |
Family
ID=48842202
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320055656 Expired - Fee Related CN203090757U (en) | 2013-01-31 | 2013-01-31 | Desulfurization and denitrification system for boiler smoke |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203090757U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104785087A (en) * | 2015-04-01 | 2015-07-22 | 东北大学 | Seawater desulfurization auxiliary equipment system and desulfurization method |
| CN105056682A (en) * | 2015-08-21 | 2015-11-18 | 哈尔滨市金京锅炉有限公司 | Boiler waste gas treatment device |
| CN107485985A (en) * | 2017-10-10 | 2017-12-19 | 佛山市宝粤美科技有限公司 | A kind of desulfuring and denitrifying apparatus |
| CN108079777A (en) * | 2017-11-28 | 2018-05-29 | 石河子大学 | A kind of coal-fired plant flue gas low-temperature denitration method and its device |
| CN109126441A (en) * | 2018-08-08 | 2019-01-04 | 江苏吉能达环境能源科技有限公司 | A kind of intelligent flue gas denitration device |
-
2013
- 2013-01-31 CN CN 201320055656 patent/CN203090757U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104785087A (en) * | 2015-04-01 | 2015-07-22 | 东北大学 | Seawater desulfurization auxiliary equipment system and desulfurization method |
| CN105056682A (en) * | 2015-08-21 | 2015-11-18 | 哈尔滨市金京锅炉有限公司 | Boiler waste gas treatment device |
| CN107485985A (en) * | 2017-10-10 | 2017-12-19 | 佛山市宝粤美科技有限公司 | A kind of desulfuring and denitrifying apparatus |
| CN108079777A (en) * | 2017-11-28 | 2018-05-29 | 石河子大学 | A kind of coal-fired plant flue gas low-temperature denitration method and its device |
| CN109126441A (en) * | 2018-08-08 | 2019-01-04 | 江苏吉能达环境能源科技有限公司 | A kind of intelligent flue gas denitration device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20130731 Termination date: 20210131 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |