CN202778376U - Shutter type ammonia/air mixer device for ammonia-spraying denitration system of thermal power plant - Google Patents
Shutter type ammonia/air mixer device for ammonia-spraying denitration system of thermal power plant Download PDFInfo
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- CN202778376U CN202778376U CN201220477449.3U CN201220477449U CN202778376U CN 202778376 U CN202778376 U CN 202778376U CN 201220477449 U CN201220477449 U CN 201220477449U CN 202778376 U CN202778376 U CN 202778376U
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Abstract
The utility model discloses a shutter type ammonia/air mixer device for an ammonia-spraying denitration system of a thermal power plant. According to the shutter type ammonia/air mixer device for the denitration system, the two sides of the mixer are respectively welded with an air inlet section and a mixed gas outlet section; an ammonia spraying tube is welded with the mixer main body at a position close to the air inlet section; and a plurality groups of shutter type baffle plates are arranged in the mixer main body. Through the shutter type ammonia/air mixer device, the mixing of the ammonia and the air is more uniform, the pressure drop of the system is lower. The shutter type ammonia/air mixer device is simple in structure, and is convenient to manufacture.
Description
Technical field
The utility model relates to a kind of SCR(Selective Catalytic Reduction, SCR) parts of flue gas denitrification system; Relate in particular to a kind of thermal power plant and spray the venetian blind type ammonia of ammonia denitrating system/air mixer device.
Background technology
At present; in the SCR denitrating system of thermal power plant; the reducing agent that adopts is ammonia; ammonia and air enter respectively ammonia/air mixer; under the effect of internal mix element; make the counterdiffusion of two kinds of gas phases and fully mixing, guarantee the ammonia gas volume concentrations of mixer outlet less than 5%, thereby realize the dilution of ammonia.Therefore, the mixing of the blender that adopts is had relatively high expectations, and wish simple in structurely, the blender pressure drop is low.
At present, the kind of blender is a lot, but all has various drawbacks.The blender that has mixes requirement for satisfying, and arranges the deflection plate that quantity is more and sectional area is larger in blender, and the blender pressure drop sharply increases, thereby has increased exerting oneself of dilution air, has reduced the economy of operation; The blender that has only changes the form that sprays into of ammonia for reducing the blender pressure drop, and does not take other water conservancy diversion measure, causes the blender mixed effect poor, and the gas pressure fluctuation is large, affects the later stage denitration efficiency.
Summary of the invention
The purpose of this utility model is the technical deficiency part for existing ammonia/air mixer, the venetian blind type ammonia of a kind of thermal power plant spray ammonia denitrating system/air mixer device is provided, satisfies simultaneously the requirements such as ammonia and air mix, pressure drop is low, simple in structure, easily manufactured.
The purpose of this utility model is achieved through the following technical solutions: a kind of venetian blind type ammonia of thermal power plant spray ammonia denitrating system/air mixer device is characterized in that it comprises housing, ammonia jet pipe, deflection plate and deflection plate support; Wherein, described housing is welded successively by air intake section, blender main body and mixed gas outlet section, and the ammonia jet pipe is welded on the blender main body near on the axis of air intake section; Some deflection plate supports are welded at the interval that misplaces successively, the up and down both sides of blender main body inner wall, and the angle of deflection plate support and horizontal plane is a angle, and the mounting distance of homonymy deflection plate support is P, and the mounting distance of heteropleural deflection plate support is P/2; Weld respectively some deflection plates on the every deflection plate support, each deflection plate is parallel, with the angle of deflection plate support be the c angle, be venetian blind type; A angle and c angle are all at 0-90 °, and the length of P is 0.6 times of blender inner major diameter.
The beneficial effects of the utility model are, after ammonia and air enter respectively the venetian blind type ammonia of thermal power plant of the present utility model spray ammonia denitrating system/air mixer device, the venetian blind type deflection plate of flowing through, the counterdiffusion of two kinds of gas phases also fully mixes, so that the ammonia gas volume concentrations of mixer outlet is less than 5%, and the blender pressure drop reduces greatly, can be similar to ignore the venetian blind type deflection plate to the impact of blender pressure drop.
Description of drawings
Fig. 1 is the venetian blind type ammonia/air mixer front view of denitrating system;
Fig. 2 is that the venetian blind type ammonia/air mixer A-A of denitrating system is to cutaway view;
Fig. 3 is the schematic three dimensional views of venetian blind type deflection plate;
Fig. 4 is the two-dimensional representation of venetian blind type deflection plate;
Among the figure, air intake section 1, ammonia jet pipe 2, deflection plate 3, deflection plate support 4, blender main body 5, mixed gas outlet section 6.
The specific embodiment
Further specify the utility model below in conjunction with the drawings and specific embodiments; present embodiment carries out under take technical solutions of the utility model as prerequisite; provided concrete embodiment and detailed result of implementation, but protection domain of the present utility model is not limited to following examples of implementation.
The utility model provides the venetian blind type ammonia of a kind of thermal power plant spray ammonia denitrating system/air mixer device, its profile and structure are as shown in Figure 1, Figure 2, Figure 3 and Figure 4, the venetian blind type ammonia of described thermal power plant spray ammonia denitrating system/air mixer device comprises housing, ammonia jet pipe 2, deflection plate 3 and deflection plate support 4, described housing is welded successively by air intake section 1, blender main body 5 and mixed gas outlet section 6, and ammonia jet pipe 2 is welded on blender main body 5 near on the axis of air intake section 1; Some deflection plate supports 4 are welded at the interval that misplaces successively, the up and down both sides of blender main body 5 inwalls, deflection plate support 4 is a angle with the angle of horizontal plane, some deflection plates 3 of parallel welding respectively on the every deflection plate support 4, with the angle of deflection plate support be the c angle, be venetian blind type; Be dislocatedly distributed between each deflection plate support 4, the mounting distance of homonymy deflection plate support 4 is P, and the mounting distance of heteropleural deflection plate support 4 is P/2.A angle and c angle are all at 0-90 °, and the length of P is 0.6 times of blender main body 5 internal diameters.
The course of work of the present invention is as follows: contact with the air following current that enters from air intake section 1 from the ammonia of ammonia jet pipe 2 ejections, through the too much flow-disturbing effect of group venetian blind type deflection plate 3, phase counterdiffusion and fully mixing between two kinds of gases, so that the ammonia gas volume concentrations that mixed gas outlet section 6 flows out is less than 5%, and the blender pressure drop reduces greatly, can be similar to ignore the venetian blind type deflection plate to the impact of blender pressure drop.
Result of implementation of the present utility model: in above-mentioned venetian blind type ammonia/air mixer, the ratio of air and ammonia entrance velocity is set by 3:2, and mixed gas outlet pressure is-1600pa that temperature is 298K, carries out numerical simulation calculation.On the mixer outlet monitoring surface, adopt the venetian blind type deflection plate after, the concentration deviation of ammonia and original design (conventional mixer, i.e. semicircle deflection plate) are close, but the blender pressure drop reduces greatly, is reduced in the 100Pa by 1600Pa.
Numerical simulation result shows, adopt the venetian blind type deflection plate to be optimized after, the mixed effect of ammonia and air is better, can satisfy the mixing requirement, and the pressure drop of blender reduces greatly, reduces system energy consumption.The above-mentioned venetian blind type ammonia/air of this explanation changes mixer apparatus and not only is conducive to mixing of ammonia and air, can also reduce the blender pressure drop, for follow-up spray ammonia denitration provides safeguard.
The above only is preferred embodiment of the present utility model, is not that structure of the present utility model is done any pro forma restriction.Any simple modification, equivalent variations and modification that every foundation technical spirit of the present utility model is done above examples of implementation all fall in the protection domain of the present utility model.
Claims (1)
1. the venetian blind type ammonia of a thermal power plant spray ammonia denitrating system/air mixer device is characterized in that it comprises housing, ammonia jet pipe, deflection plate and deflection plate support; Wherein, described housing is welded successively by air intake section, blender main body and mixed gas outlet section, and the ammonia jet pipe is welded on the blender main body near on the axis of air intake section; Some deflection plate supports are welded at the interval that misplaces successively, the up and down both sides of blender main body inner wall, and the angle of deflection plate support and horizontal plane is a angle, and the mounting distance of homonymy deflection plate support is P, and the mounting distance of heteropleural deflection plate support is P/2; Weld respectively some deflection plates on the every deflection plate support, each deflection plate is parallel, with the angle of deflection plate support be the c angle, be venetian blind type; A angle and c angle are all at 0-90 °, and the length of P is 0.6 times of blender inner major diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220477449.3U CN202778376U (en) | 2012-09-19 | 2012-09-19 | Shutter type ammonia/air mixer device for ammonia-spraying denitration system of thermal power plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220477449.3U CN202778376U (en) | 2012-09-19 | 2012-09-19 | Shutter type ammonia/air mixer device for ammonia-spraying denitration system of thermal power plant |
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| CN202778376U true CN202778376U (en) | 2013-03-13 |
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| CN201220477449.3U Expired - Lifetime CN202778376U (en) | 2012-09-19 | 2012-09-19 | Shutter type ammonia/air mixer device for ammonia-spraying denitration system of thermal power plant |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105353071A (en) * | 2015-10-14 | 2016-02-24 | 浙江广翰环保科技股份有限公司 | Performance detection apparatus for denitration catalyst |
| CN106000140A (en) * | 2016-07-08 | 2016-10-12 | 大唐环境产业集团股份有限公司 | Ammonia-air mixing device for flue gas denitration |
| CN106839828A (en) * | 2017-02-22 | 2017-06-13 | 太原理工大学 | Oblique blinds baffle shell-and-tube heat exchanger in double-shell side external spiral deflection plate |
| CN108465300A (en) * | 2018-04-02 | 2018-08-31 | 杨大鹏 | A kind of chemical industry gas-liquid separation tower |
| CN114404846A (en) * | 2021-12-16 | 2022-04-29 | 蚌埠瑞祥消防机电设备有限公司 | Novel fire engine |
-
2012
- 2012-09-19 CN CN201220477449.3U patent/CN202778376U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105353071A (en) * | 2015-10-14 | 2016-02-24 | 浙江广翰环保科技股份有限公司 | Performance detection apparatus for denitration catalyst |
| CN106000140A (en) * | 2016-07-08 | 2016-10-12 | 大唐环境产业集团股份有限公司 | Ammonia-air mixing device for flue gas denitration |
| CN106839828A (en) * | 2017-02-22 | 2017-06-13 | 太原理工大学 | Oblique blinds baffle shell-and-tube heat exchanger in double-shell side external spiral deflection plate |
| CN108465300A (en) * | 2018-04-02 | 2018-08-31 | 杨大鹏 | A kind of chemical industry gas-liquid separation tower |
| CN108465300B (en) * | 2018-04-02 | 2020-08-25 | 华融化学股份有限公司 | Gas-liquid separation tower for chemical industry |
| CN114404846A (en) * | 2021-12-16 | 2022-04-29 | 蚌埠瑞祥消防机电设备有限公司 | Novel fire engine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: ZHEJIANG LANTIAN QIUSHI ENVIRONMENTAL PROTECTION C Free format text: FORMER NAME: ZHEJIANG ATMOSPHERE ENVIRONMENTAL PROTECTION GROUP CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: Hangzhou City, Zhejiang province Xihu District 310012 teachers Road No. 23 building 21F bonaohui Technology Patentee after: ZHEJIANG ATMOSPHERE ENVIRONMENTAL PROTECTION CO.,LTD. Address before: Hangzhou City, Zhejiang province Xihu District 310012 teachers Road No. 23 building 21F bonaohui Technology Patentee before: ZHEJIANG ATMOSPHERE ENVIRONMENTAL PROTECTION GROUP Co.,Ltd. |
|
| C53 | Correction of patent of invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Zhang Zhenliang Inventor after: Xie Fang Inventor after: Shi Pingping Inventor after: Lv Zhichao Inventor after: Qian Dongsheng Inventor after: Zhu Xiaoya Inventor after: Fang Yun Inventor after: Yu Xiaowei Inventor before: Zhang Zhenliang Inventor before: Xie Fang Inventor before: Shi Pingping Inventor before: Lv Zhichao Inventor before: Qian Dongsheng Inventor before: Zhu Xiaoya Inventor before: Fang Yun Inventor before: Yu Xiaowei |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130313 |