CN203842500U - Anti-blocking ammonia injection grid - Google Patents
Anti-blocking ammonia injection grid Download PDFInfo
- Publication number
- CN203842500U CN203842500U CN201420267458.9U CN201420267458U CN203842500U CN 203842500 U CN203842500 U CN 203842500U CN 201420267458 U CN201420267458 U CN 201420267458U CN 203842500 U CN203842500 U CN 203842500U
- Authority
- CN
- China
- Prior art keywords
- flue gas
- nozzle
- ammonia
- gas
- blender
- 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
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 title claims abstract description 56
- 229910021529 ammonia Inorganic materials 0.000 title claims abstract description 26
- 238000002347 injection Methods 0.000 title abstract 3
- 239000007924 injection Substances 0.000 title abstract 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 55
- 239000003546 flue gas Substances 0.000 claims abstract description 55
- 239000007789 gas Substances 0.000 claims abstract description 13
- 238000005507 spraying Methods 0.000 claims description 11
- 230000001154 acute effect Effects 0.000 claims description 6
- 230000000694 effects Effects 0.000 abstract description 4
- 238000010790 dilution Methods 0.000 abstract description 3
- 239000012895 dilution Substances 0.000 abstract description 3
- 238000005265 energy consumption Methods 0.000 abstract 1
- 239000000428 dust Substances 0.000 description 9
- 239000007921 spray Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 3
- GQPLMRYTRLFLPF-UHFFFAOYSA-N Nitrous Oxide Chemical class [O-][N+]#N GQPLMRYTRLFLPF-UHFFFAOYSA-N 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000010977 unit operation Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Treating Waste Gases (AREA)
Abstract
The utility model relates to an anti-blocking ammonia injection grid which comprises a nozzle connected with an ammonia gas pipeline, wherein the nozzle is vertically downward in the direction of a gas outlet; a flue gas mixer corresponding to the gas outlet is arranged under the gas outlet of the nozzle. According to the anti-blocking ammonia injection grid, a mode that an upward opening is formed in the nozzle is adopted, so that ammonia gas is in countercurrent contact with flue gas; the ammonia gas and the flue gas are guided and mixed through the flue gas mixer, so that the mixing effect of the ammonia gas and the flue gas is enhanced and the blockage of the nozzle during the shutdown period is effectively prevented; the flue gas mixer is in a shuttle-shaped structure, so that the situation that the flue gas carries flying ash to the nozzle can be effectively avoided, a dilution fan is stopped under the circumstance that ammonia is not injected, and then the energy consumption is reduced.
Description
Technical field
The utility model relates to a kind of Coal-fired Thermal Power station-service equipment, particularly a kind of block-resistant type ammonia-spraying grid, belongs to the spray ammonia equipment in flue-gas denitration process.
Background technology
In the denitrating technique adopting at China's coal fired thermal power plant, SCR technique is most widely used a kind of gas denitrifying technology, the mature and reliable that possesses skills, the advantage that denitration efficiency is high.
In existing SCR technique, the nozzle direction of ammonia-spraying grid all adopts upwards and arranges, ensure identical with flow of flue gas direction with this, the main purpose of this set is to prevent that flue gas from carrying flying dust and entering nozzle interior, cause spray nozzle clogging, affect the distribution situation of ammonia in flue inside, thereby make denitration exit portion region the escaping of ammonia or outlet nitrous oxides concentration too high, affect the operational effect of denitrating system.
Although the scheme that adopts nozzle direction upwards to arrange has solved the problems referred to above, the upwards arrangement of nozzle still has following shortcoming, and nozzle opening direction is identical with flue gas flow direction, can cause ammonia to mix with flue gas inhomogeneous; During unit operation, thereby likely can dropping on nozzle interior, oarse-grained flying dust causes spray nozzle clogging, even in the situation that not spraying ammonia, also need the dilution air that puts into operation, cause the serious waste of the energy; In shutdown situation, flue internal freedom flow or support on the flying dust that drops drop on nozzle, also can cause spray nozzle clogging.
Summary of the invention
The purpose of this utility model is to provide a kind of block-resistant type ammonia-spraying grid, for denitrating technique, has solved conventional spout and the obstruction and the ammonia that cause are upwards set have mixed inhomogeneous problem with flue gas.
The technical scheme in the invention for solving the technical problem is such:
A kind of block-resistant type ammonia-spraying grid, comprises the nozzle for connecting ammonia pipeline, and its key technology is: described nozzle gas outlet direction is straight down, is provided with flue gas blender corresponding thereto under the gas outlet of nozzle.Described flue gas blender is the fusiformis body forming with end circular cone by two, the vertical section of this fusiformis body is rhombus, the upper and lower drift angle of the vertical section of this flue gas blender is the line of acute angle and upper and lower drift angle and the axis of nozzle overlaps, and the horizontal catercorner length of vertical section of flue gas blender is not less than shower nozzle gas outlet circle diameter.
Further improvement of the utility model is: the vertical range of the upper end of described flue gas blender and nozzle lower end edge is 1～2 ㎝.
The beneficial effects of the utility model are:
This block-resistant type ammonia-spraying grid is by the mode that adopts nozzle opening upwards to arrange, not only having realized ammonia contacts with flue gas adverse current, by flue gas blender, ammonia and flue gas are carried out after water conservancy diversion and mixing, strengthen the mixed effect of ammonia and flue gas, and effectively prevented the obstruction of nozzle between down period; The fusiformis structure that flue gas blender adopts not only can effectively be avoided flue gas to carry flying dust and enter nozzle interior, and realizes the dilution air of stopping transport in the situation that not putting into operation spray ammonia, thereby has reduced energy resource consumption.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the utility model flue gas mixer structure schematic diagram.
In figure: 1, nozzle, 2, ammonia, 3, flue gas blender, 4, flue gas.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the utility model is further described.
As shown in Figure 1, a kind of block-resistant type ammonia-spraying grid, comprise nozzle 1 for connecting ammonia pipeline and for mixing the flue gas blender 3 of ammonia and flue gas, when installation, nozzle 1 gas outlet direction is arranged straight down, flue gas blender 3 is corresponding thereto installed under the gas outlet of nozzle 1, this flue gas blender 3 is by two fusiformis body structures that form with end circular cone, the vertical section of this fusiformis body is rhombus, the vertical section of flue gas blender 3 is arranged to rhombus, and then the vertical section of guarantee flue gas blender 3 is upper, lower drift angle is acute angle, on ensureing when mounted, the line of lower drift angle overlaps with the axis of nozzle 1, on flue gas blender 3, the acute angle angle of being arranged to lower two ends drift angle can slow down flying dust washing away flue gas blender 3 lower surfaces, also can avoid flying dust to be gathered in the upper surface of flue gas blender 3.In the time that being set, the horizontal catercorner length of vertical section of flue gas blender 3 should be not less than nozzle 1 gas outlet circle diameter length, can avoid like this flying dust from bottom to top flowing directly to wash away nozzle 1, reduce obstruction and the wearing and tearing of nozzle 1, according to ammonia 2 and flue gas 4 mixed effects and the actual requirement using, the vertical range of the upper end of flue gas blender 3 and nozzle 1 lower end edge is set to 1.5 ㎝, so not only can be in additionally not increasing spray ammonia resistance, prevent that flying dust from entering nozzle 1 inside, causes nozzle 1 to stop up.
In the time that this block-resistant type ammonia-spraying grid uses, the ammonia 2 in pipeline is from up to down sprayed by nozzle 1, and when ammonia 2 is after the tapered face of upper end acute angle of flue gas blender 3 stops, ammonia 2 is shunted to the both sides of flue gas blender 3; Meanwhile, flue gas 4 carries flying dust and flows from bottom to top, and when flue gas 4 is after the tapered face of lower end acute angle of flue gas blender 3 stops, flue gas 4 is shunted to the both sides of flue gas blender 3; The ammonia 3 of shunting downwards and flue gas 4 counter current contacting of upwards shunting, and then make ammonia 2 and full and uniform the mixing of flue gas 4.
Flue gas blender 3 of the present utility model can directly be fixed on flue inside, and the inside of flue gas blender 3 is adopted to hollow mode, reduces flue bear a heavy burden with this.
To the above-mentioned explanation of the disclosed embodiments, make professional and technical personnel in the field can realize or use the utility model.To be apparent for those skilled in the art to the multiple amendment of these embodiment, General Principle as defined herein can, in the situation that not departing from spirit or scope of the present utility model, realize in other embodiments.Therefore, the utility model will can not be restricted to these embodiment shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (2)
1. a block-resistant type ammonia-spraying grid, comprise the nozzle for connecting ammonia pipeline, it is characterized in that: described nozzle (1) gas outlet direction is straight down, under the gas outlet of nozzle (1), be provided with flue gas blender (3) corresponding thereto, described flue gas blender (3) is by two fusiformis bodies that form with end circular cone, the vertical section of this fusiformis body is rhombus, the vertical section of this flue gas blender (3) upper, lower drift angle be acute angle and on, the line of lower drift angle overlaps with the axis of nozzle (1), the horizontal catercorner length of vertical section of flue gas blender (3) is not less than nozzle (1) gas outlet circle diameter.
2. block-resistant type ammonia-spraying grid according to claim 2, is characterized in that: the vertical range of the upper end of described flue gas blender (3) and nozzle (1) lower end edge is 1～2 ㎝.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420267458.9U CN203842500U (en) | 2014-05-23 | 2014-05-23 | Anti-blocking ammonia injection grid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420267458.9U CN203842500U (en) | 2014-05-23 | 2014-05-23 | Anti-blocking ammonia injection grid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203842500U true CN203842500U (en) | 2014-09-24 |
Family
ID=51555566
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420267458.9U Expired - Fee Related CN203842500U (en) | 2014-05-23 | 2014-05-23 | Anti-blocking ammonia injection grid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203842500U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105381715A (en) * | 2015-12-15 | 2016-03-09 | 浙江百能科技有限公司 | Counter-current ammonia spraying mixer |
| CN105879625A (en) * | 2016-06-08 | 2016-08-24 | 济南清洁能源科技发展有限公司 | Efficient reverse flue gas mixer |
| CN106390743A (en) * | 2016-10-13 | 2017-02-15 | 浙江天地环保科技有限公司 | Counter-current forced mixing ammonia spraying apparatus |
| CN108380011A (en) * | 2018-03-09 | 2018-08-10 | 安徽江淮汽车集团股份有限公司 | A kind of air cleaning unit and automobile |
| CN108543421A (en) * | 2018-07-02 | 2018-09-18 | 大唐环境产业集团股份有限公司 | A kind of accumulatingdust plug nozzle device of ammonia-spraying grid |
| CN110833743A (en) * | 2018-08-17 | 2020-02-25 | 英特佳工程与环境技术有限公司 | Adsorber and method for exhaust gas purification |
-
2014
- 2014-05-23 CN CN201420267458.9U patent/CN203842500U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105381715A (en) * | 2015-12-15 | 2016-03-09 | 浙江百能科技有限公司 | Counter-current ammonia spraying mixer |
| CN105879625A (en) * | 2016-06-08 | 2016-08-24 | 济南清洁能源科技发展有限公司 | Efficient reverse flue gas mixer |
| CN106390743A (en) * | 2016-10-13 | 2017-02-15 | 浙江天地环保科技有限公司 | Counter-current forced mixing ammonia spraying apparatus |
| CN108380011A (en) * | 2018-03-09 | 2018-08-10 | 安徽江淮汽车集团股份有限公司 | A kind of air cleaning unit and automobile |
| CN108543421A (en) * | 2018-07-02 | 2018-09-18 | 大唐环境产业集团股份有限公司 | A kind of accumulatingdust plug nozzle device of ammonia-spraying grid |
| CN110833743A (en) * | 2018-08-17 | 2020-02-25 | 英特佳工程与环境技术有限公司 | Adsorber and method for exhaust gas purification |
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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: 20140924 Termination date: 20160523 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |