CN201389432Y - Ammonia and air counterflow mixer of ammonia injection and denitration system in heat power plant - Google Patents
Ammonia and air counterflow mixer of ammonia injection and denitration system in heat power plant Download PDFInfo
- Publication number
- CN201389432Y CN201389432Y CN200920107341U CN200920107341U CN201389432Y CN 201389432 Y CN201389432 Y CN 201389432Y CN 200920107341 U CN200920107341 U CN 200920107341U CN 200920107341 U CN200920107341 U CN 200920107341U CN 201389432 Y CN201389432 Y CN 201389432Y
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- ammonia
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- power plant
- mixer
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Abstract
The utility model discloses an ammonia and air counterflow mixer of an ammonia injection and denitration system in a heat power plant, which belongs to a part scope of a denitration system in the heat power plant. The left end of the mixer is an air inlet section while the right end is a mixed gas outlet section, and an ammonia sprayer tube is arranged near the mixed gas outlet section. Ammonia is injected into an air flow in a counterflow form, and then the speed of the ammonia is reduced until flowing with air in the same direction. Counterflow multi-pipe arrangement of the ammonia prologs a flow path of the ammonia, increases ammonia and air mixing effect, and shortens the length of the mixer. The ammonia and air counterflow mixer is simple in structure, uniform in ammonia and air mixing, low in gas flowing resistance and partial resistance and low in pressure drop, shortens the length of a main body section of the mixer and reduces cost.
Description
Technical field
The utility model belongs to thermal power plant denitrating system components range, particularly a kind of thermal power plant spray ammonia denitrating system ammonia air inversion blender.
Background technology
In the thermal power plant spray ammonia denitrating system, ammonia enters blender respectively with diluent air fully to be mixed, and the ammonia gas volume concentrations that blender comes out is lower than 5%, and gaseous mixture enters the spray ammonia system subsequently.Blender should be simple in structure, mixes, and gas pressure drop is low.The kind of blender is more at present, but all has some problems, and the blender that has is arranged too much deflection plate in order to improve mixed effect in internal mixer, has increased gas pressure drop, thereby has increased exerting oneself of dilution blower fan, has reduced the economy of operation; The blender mixed effect that has is poor, and the gas pressure fluctuation is big, influences the denitration efficiency in later stage; The blender that has adopts the ammonia air to arrange in the same way, in order to guarantee mixed effect, causes the mixer design size long, has increased the initial investment cost.
Summary of the invention
The purpose of this utility model is to arrange too much deflection plate at internal mixer in the prior art, and the gas pressure fluctuation is big, influences the denitration efficiency in later stage; The blender that has adopts the ammonia air to arrange in the same way, in order to guarantee mixed effect, cause the mixer design size long, increased the deficiency of initial investment cost, and a kind of thermal power plant spray ammonia denitrating system ammonia air inversion blender is provided, it is characterized in that, the blender left end is the air intake end, the centre is the blender main paragraph, and right-hand member is the mixer outlet end, and spray ammonia pipe is arranged in 4/5 length of blender main paragraph from the left side meter.
Described spray ammonia pipe is three parallel being connected on the person in charge of steel pipe of 35mm internal diameter, and stretches in the blender, 5 nozzles that internal diameter is 12mm that evenly distribute on intervalve, and 4 nozzles that internal diameter is 12mm that all evenly distributed on two side pipes.
The nozzle of described intervalve and two side pipe top nozzle interlaced arrangement.
Described blender air intake end is measure-alike or different conical shells with the mixer outlet end.
The direction of described nozzle and air intake end air enter flow to reverse.
The beneficial effects of the utility model are that (1) ammonia adverse current sprays in the air, are equivalent under the situation that does not prolong mixer length, have increased ammonia and Air mixing time, help improving the mixed effect of ammonia and flue gas; (2) the three a plurality of spray ammonia of ammonia playpipe nozzle interlaced arrangement, the air velocity highest point is arranged more a plurality of spray ammonia nozzles, help the even distribution of ammonia in the space, improve mixed effect, the mist three ammonia playpipes of flowing through, behind pipe, form stronger disturbance, further improved the uniformity of mixing; (3) simple in structure, in blender, do not arrange various deflection plates, reduced pressure drop, reduce the length of blender main paragraph, reduced cost.
Description of drawings
Fig. 1 is an ammonia air inversion mixer structure schematic diagram.
Fig. 2 is an ammonia air inversion blender spray ammonia pipe distribution schematic diagram.
The specific embodiment
The utility model provides a kind of thermal power plant spray ammonia denitrating system ammonia air inversion blender.Below in conjunction with accompanying drawing the utility model is illustrated.
In ammonia air inversion mixer structure schematic diagram shown in Figure 1, the blender left end is an air intake end 1, and the centre is a blender main paragraph 2, and right-hand member is a mixer outlet end 5, and spray ammonia pipe 3 is arranged in the 4/5 length place of calculating from left to right of blender main paragraph 2; Blender air intake end 1 is measure-alike or different conical shells with mixer outlet end 5.
Figure 2 shows that ammonia air inversion blender spray ammonia pipe distribution schematic diagram.Among the figure
Spray ammonia pipe 3 is parallel being connected on the person in charge of steel pipe of three internal diameter 35mm, and stretches in the blender, 5 nozzles 4 that internal diameter is 12mm that evenly distribute on intervalve, and 4 nozzles 4 that internal diameter is 12mm that all evenly distributed on two side pipes.The nozzle of intervalve and two side pipe top nozzle interlaced arrangement distribute in the blender space more uniformly with the ammonia that guarantees ejection, and the direction of nozzle and air intake end air enter flow to reverse.Air enters from blender left end 1, and ammonia then adverse current high velocity jet is gone in the air,, is mixed together with air until turning in the decay of air medium velocity, flows out from right-hand member.By the upstream injection of ammonia, can be so that ammonia time of staying in blender prolong relatively, effectively flow process increases, and has finally improved ammonia Air mixing uniformity.In addition, three spray ammonia pipes are evenly distributed in the blender, mixer center place air velocity maximum, spray ammonia pipe has been arranged 5 spray ammonia nozzles in the middle of corresponding, the both sides air velocity is smaller, and corresponding both sides spray ammonia pipe has been arranged 4 spray ammonia nozzles respectively, and the nozzle distribution of different spray ammonia pipes is interlaced, helps improving the uniformity that ammonia distributes in blender.Secondly, mist is flowed through three and sprayed the ammonia pipe, forms stronger disturbance behind the Yi Zaiguan, improves the uniformity that ammonia mixes, and is so this internal mixer has been cancelled arrangement of baffles, simple in structure.
Claims (5)
1. ammonia denitrating system ammonia air inversion blender is sprayed in a thermal power plant, it is characterized in that the blender left end is the air intake end, the centre is the blender main paragraph, right-hand member is the mixer outlet end, and spray ammonia pipe is arranged in 4/5 length of blender main paragraph from the left side meter.
2. according to the described thermal power plant spray of claim 1 ammonia denitrating system ammonia air inversion blender, it is characterized in that, described spray ammonia pipe is parallel being connected on the person in charge of three steel pipes of 35mm internal diameter, and stretch in the blender, even 5 nozzles that internal diameter is 12mm that distribute on intervalve, and 4 nozzles that internal diameter is 12mm that all evenly distributed on two side pipes.
3. according to the described thermal power plant spray of claim 1 ammonia denitrating system ammonia air inversion blender, it is characterized in that the nozzle of described intervalve and two side pipe top nozzle interlaced arrangement.
4. according to the described thermal power plant spray of claim 1 ammonia denitrating system ammonia air inversion blender, it is characterized in that described blender air intake end is measure-alike or different conical shells with the mixer outlet end.
5. according to the described thermal power plant of claim 1 spray ammonia denitrating system ammonia air inversion blender, it is characterized in that, the direction of described nozzle and air intake end air enter flow to reverse.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920107341U CN201389432Y (en) | 2009-04-14 | 2009-04-14 | Ammonia and air counterflow mixer of ammonia injection and denitration system in heat power plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920107341U CN201389432Y (en) | 2009-04-14 | 2009-04-14 | Ammonia and air counterflow mixer of ammonia injection and denitration system in heat power plant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201389432Y true CN201389432Y (en) | 2010-01-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920107341U Expired - Lifetime CN201389432Y (en) | 2009-04-14 | 2009-04-14 | Ammonia and air counterflow mixer of ammonia injection and denitration system in heat power plant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201389432Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102631850A (en) * | 2012-05-07 | 2012-08-15 | 三明中环科经贸有限公司 | Gas mixer |
| GB2488763A (en) * | 2011-03-04 | 2012-09-12 | Secr Defence | Dilution device and manifold system |
| CN105013365A (en) * | 2015-08-17 | 2015-11-04 | 宁夏宝塔石化科技实业发展有限公司 | Novel ammonia and air mixer |
| CN105032262A (en) * | 2015-07-29 | 2015-11-11 | 江苏新中环保股份有限公司 | Ammonia gas and air mixer |
| CN108744971A (en) * | 2018-08-07 | 2018-11-06 | 国电科学技术研究院有限公司 | Ammonia injection apparatus and denitrating flue gas processing system |
| CN108816067A (en) * | 2018-08-06 | 2018-11-16 | 北京京诚科林环保科技有限公司 | A kind of fast mixing device of high-temperature flue gas |
| CN112324488A (en) * | 2020-10-30 | 2021-02-05 | 中国平煤神马能源化工集团有限责任公司 | System for preparing saturated steam by low-gas high-temperature heat storage oxidation of coal mine |
-
2009
- 2009-04-14 CN CN200920107341U patent/CN201389432Y/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2488763A (en) * | 2011-03-04 | 2012-09-12 | Secr Defence | Dilution device and manifold system |
| CN102631850A (en) * | 2012-05-07 | 2012-08-15 | 三明中环科经贸有限公司 | Gas mixer |
| CN102631850B (en) * | 2012-05-07 | 2014-03-26 | 三明中环科经贸有限公司 | Gas mixer |
| CN105032262A (en) * | 2015-07-29 | 2015-11-11 | 江苏新中环保股份有限公司 | Ammonia gas and air mixer |
| CN105032262B (en) * | 2015-07-29 | 2018-03-23 | 江苏新中环保股份有限公司 | A kind of ammonia air mixer |
| CN105013365A (en) * | 2015-08-17 | 2015-11-04 | 宁夏宝塔石化科技实业发展有限公司 | Novel ammonia and air mixer |
| CN108816067A (en) * | 2018-08-06 | 2018-11-16 | 北京京诚科林环保科技有限公司 | A kind of fast mixing device of high-temperature flue gas |
| CN108744971A (en) * | 2018-08-07 | 2018-11-06 | 国电科学技术研究院有限公司 | Ammonia injection apparatus and denitrating flue gas processing system |
| CN112324488A (en) * | 2020-10-30 | 2021-02-05 | 中国平煤神马能源化工集团有限责任公司 | System for preparing saturated steam by low-gas high-temperature heat storage oxidation of coal mine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: HANGZHOU GUANGHAN ENERGY TECHNOLOGY CO., LTD. Assignor: Ye Liping|Weng Weiguo Contract record no.: 2010330001401 Denomination of utility model: Ammonia and air counterflow mixer of ammonia injection and denitration system in heat power plant Granted publication date: 20100127 License type: Exclusive License Record date: 20100720 |
|
| ASS | Succession or assignment of patent right |
Free format text: FORMER OWNER: WENG WEIGUO Effective date: 20121225 Owner name: HANGZHOU GUANGHAN ENERGY TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: YE LIPING Effective date: 20121225 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 310027 HANGZHOU, ZHEJIANG PROVINCE TO: 310051 HANGZHOU, ZHEJIANG PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20121225 Address after: Hangzhou City, Zhejiang province 310051 Binjiang District Jiangling Qianjiang Road No. 2031 building 21 floor room 2101 Patentee after: HANGZHOU GUANGHAN ENERGY TECHNOLOGY CO., LTD. Address before: Hua Rong creative building No. 3760 South Ring Road in Binjiang District Hangzhou city Zhejiang province 310027 room 1402 Patentee before: Ye Liping Patentee before: Weng Weiguo |
|
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: 310051, No. two, No. 1111, Qingxi Road, Jiangdong Industrial Park, Xiaoshan, Hangzhou, Zhejiang, Hangzhou Patentee after: ZHEJIANG GUANGHAN ENVIRONMENTAL PROTECTION TECHNOLOGY CO., LTD. Address before: Hangzhou City, Zhejiang province 310051 Binjiang District Jiangling Qianjiang Road No. 2031 building 21 floor room 2101 Patentee before: HANGZHOU GUANGHAN ENERGY TECHNOLOGY CO., LTD. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100127 |