CN203564958U - Ammonia injection grid for flue gas denitration - Google Patents
Ammonia injection grid for flue gas denitration Download PDFInfo
- Publication number
- CN203564958U CN203564958U CN201320602999.8U CN201320602999U CN203564958U CN 203564958 U CN203564958 U CN 203564958U CN 201320602999 U CN201320602999 U CN 201320602999U CN 203564958 U CN203564958 U CN 203564958U
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- Prior art keywords
- ammonia
- flue gas
- nozzle pipes
- tube
- mixing tube
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Abstract
The utility model discloses an ammonia injection grid for flue gas denitration. The ammonia injection grid comprises an injection pipe and nozzle pipes, which are mutually connected, wherein the nozzle pipes are arranged on the injection pipe at intervals. The ammonia injection grid is characterized by further comprising a mixing pipe arranged above the nozzle pipes. According to the utility model, the mixing pipe is arranged right above the nozzle pipes, so that a spoiler effect on ammonia and air mixed gas ejected from the nozzle pipes can be produced and the ammonia gas and the flue gas can be fully and uniformly mixed; and a baffle effect on the smoke dust fallen from the upward side is further produced at the same time, the smoke dust fallen from the upward side is prevented from falling into the nozzle pipes and the nozzle pipes are prevented from blockage.
Description
Technical field
The utility model relates to the field of purification of flue gas pollutant, and particularly flue gas denitrification equipment aspect, specifically refers to a kind of denitrating flue gas ammonia-spraying grid.
Background technology
Nitrogen oxide (NO
x) normally by stationary source as generations such as Industrial Boiler, gas turbine, coal-burning power plants, be one of current most important atmosphere pollution, the mankind's health in serious harm.Flue Gas Denitrification Engineering can effectively be subdued the existence of nitrogen oxide, reduces the threat of nitrogen oxide to human health.SCR (SCR) gas denitrifying technology is widely used in Flue Gas Denitrification Engineering because operation is controlled simply, denitration efficiency is high.SCR gas denitrifying technology is by ammonia-spraying grid, ammonia to be sprayed in flue and mixed with flue gas, at present conventional ammonia-spraying grid is often because ammonia mixes with flue gas apart from growing etc. former thereby causing mixed effect poor, in order to address this problem, the jet port that Chinese patent Granted publication number has disclosed a kind of jet pipe for the utility model patent < < denitrating flue gas ammonia-spraying grid > > of CN202410519U is provided with the ammonia-spraying grid of flue gas disturbance sheet, flue gas disturbance sheet can form turbulent flow in part when encountering flue gas, ammonia is fully mixed with flue gas, but because jet port is direct exposed and the dirt measure that hides is not set, the agglomerating flue dust that jet port is easily fallen in flue stops up, thereby cause the empty gaseous mixture of ammonia to spray inhomogeneous, affect the mixed effect of ammonia and flue gas, therefore, for current denitrating flue gas ammonia-spraying grid, still await further improvement.
Utility model content
Technical problem to be solved in the utility model is the present situation for prior art, provides a kind of and ammonia and flue gas can be carried out to the full and uniform denitrating flue gas ammonia-spraying grid that mixes, effectively prevents that blast tube from stopping up.
The utility model solves the problems of the technologies described above adopted technical scheme: a kind of denitrating flue gas ammonia-spraying grid, comprise the playpipe and the blast tube that are connected, described blast tube is arranged at intervals on described playpipe, it is characterized in that: also comprise the mixing tube that is arranged at described blast tube top.
As preferably, described mixing tube be arranged at described blast tube directly over.
Preferably, in described mixing tube periphery, be provided with abrasionproof parts.
Preferably, described mixing tube is polygon prism.
Preferably, described mixing tube rib is over against described blast tube.
Compared with prior art, the utility model has the advantage of: because the utility model is provided with mixing tube directly over blast tube, can not only produce flow-disturbing effect to the empty gaseous mixture of the ammonia of blast tube ejection, make ammonia and flue gas obtain full and uniform mixing, also flue dust top being fallen has barrier effect simultaneously, the flue dust of having avoided top to fall falls into blast tube, prevents the obstruction of blast tube.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model embodiment;
Fig. 2 is the schematic diagram of playpipe, blast tube and mixing tube in the utility model embodiment;
Fig. 3 is that Fig. 2 is along the cutaway view of A-A direction.
The specific embodiment
Below in conjunction with accompanying drawing, be described in further detail.
Embodiment 1: as Fig. 1, shown in 2, a kind of denitrating flue gas ammonia-spraying grid, comprise playpipe 1 and blast tube 2, described playpipe 1 is connected with air supply pipe 3, blast tube 2 is arranged at intervals on described playpipe 1, above-mentioned denitrating flue gas ammonia-spraying grid also comprises the mixing tube 4 that is arranged at blast tube 2 tops, adopt such design, when the empty gaseous mixture of the ammonia of blast tube 2 interior ejections is during through mixing tube 4 directly over it, because the empty gaseous mixture of 4 pairs of ammonia of mixing tube produces flow-disturbing effect, make ammonia and flue gas be able to full and uniform mixing, in addition, the mixing tube 4 that is positioned at blast tube 2 tops also can stop that flue dust falls into blast tube 2, blast tube 2 is there is to the effect that prevents that flue dust from stopping up.
Embodiment 2: be with the difference of embodiment 1, as shown in Figure 3, in described mixing tube 4 peripheries, be provided with abrasionproof parts 5, these abrasionproof parts 5 are preferably abrasionproof angle steel, in described mixing tube 4 peripheries, by 120 degree, mixing tube 4 is carried out to trisection, at each Along ent place welding abrasionproof angle steel, three seamed edges of the end to end formation in end points place of three abrasionproof angle steel, the abrasionproof angle steel of welding can be resisted the abrasive action of soot dust granule to mixing tube 4, extends the service life of mixing tube 4; A seamed edge of described mixing tube 4 is over against described blast tube 2, make the empty gaseous mixture of ammonia after ejection, be divided into 2 strands and mixing tube 4 dorsad air-flow side form eddy current, make that ammonia and flue gas are full and uniform to be mixed.
Embodiment 3: be with the difference of embodiment 1, the profile of described mixing tube 4 is polygon prism, and a rib of mixing tube 4 is over against described blast tube 2, make the empty gaseous mixture of ammonia after ejection, be divided into 2 strands and mixing tube 4 dorsad air-flow side form eddy current, make that ammonia and flue gas are full and uniform to be mixed.
Claims (1)
1. a denitrating flue gas ammonia-spraying grid, comprises the playpipe and the blast tube that are connected, and described blast tube is arranged at intervals on described playpipe, it is characterized in that: also comprise the mixing tube that is arranged at described blast tube top; Described mixing tube be arranged at described blast tube directly over; In described mixing tube periphery, be provided with abrasionproof parts or mixing tube is set to polygon prism; A rib of polygon prism-shaped mixing tube is over against described blast tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320602999.8U CN203564958U (en) | 2013-09-27 | 2013-09-27 | Ammonia injection grid for flue gas denitration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320602999.8U CN203564958U (en) | 2013-09-27 | 2013-09-27 | Ammonia injection grid for flue gas denitration |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203564958U true CN203564958U (en) | 2014-04-30 |
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ID=50532722
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320602999.8U Expired - Lifetime CN203564958U (en) | 2013-09-27 | 2013-09-27 | Ammonia injection grid for flue gas denitration |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203564958U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104548929A (en) * | 2014-12-26 | 2015-04-29 | 大连贝斯特环境工程设备有限公司 | Selective catalytic reduction (SCR) denitration ammonia injection grid |
| CN105233686A (en) * | 2015-07-30 | 2016-01-13 | 北京哈泰克工程技术有限公司 | Matrix type ammonia spraying grille with mixing devices |
| CN106268271A (en) * | 2015-05-21 | 2017-01-04 | 同方环境股份有限公司 | A kind of flue gas desulfurization enhancing device |
| CN112984501A (en) * | 2021-02-23 | 2021-06-18 | 河南省锅炉压力容器安全检测研究院 | Low-nitrogen combustion process for gas-fired boiler |
-
2013
- 2013-09-27 CN CN201320602999.8U patent/CN203564958U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104548929A (en) * | 2014-12-26 | 2015-04-29 | 大连贝斯特环境工程设备有限公司 | Selective catalytic reduction (SCR) denitration ammonia injection grid |
| CN106268271A (en) * | 2015-05-21 | 2017-01-04 | 同方环境股份有限公司 | A kind of flue gas desulfurization enhancing device |
| CN105233686A (en) * | 2015-07-30 | 2016-01-13 | 北京哈泰克工程技术有限公司 | Matrix type ammonia spraying grille with mixing devices |
| CN105233686B (en) * | 2015-07-30 | 2018-10-30 | 北京哈泰克工程技术有限公司 | A kind of matrix form ammonia-spraying grid with mixing arrangement |
| CN112984501A (en) * | 2021-02-23 | 2021-06-18 | 河南省锅炉压力容器安全检测研究院 | Low-nitrogen combustion process for gas-fired boiler |
| CN112984501B (en) * | 2021-02-23 | 2024-02-20 | 河南省锅炉压力容器安全检测研究院 | Low-nitrogen combustion process of gas boiler |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140430 |
|
| CX01 | Expiry of patent term |