CN203425725U - Ammonia gas and air mixer in ammonia-spraying denitration system of thermal power plant - Google Patents
Ammonia gas and air mixer in ammonia-spraying denitration system of thermal power plant Download PDFInfo
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- CN203425725U CN203425725U CN201320467680.9U CN201320467680U CN203425725U CN 203425725 U CN203425725 U CN 203425725U CN 201320467680 U CN201320467680 U CN 201320467680U CN 203425725 U CN203425725 U CN 203425725U
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Abstract
The utility model provides an ammonia gas and air mixer in an ammonia-spraying denitration system of a thermal power plant. The ammonia gas and air mixer comprises a mixer body, an air inlet end formed in one end of the mixer body, a mixer main body section in the middle part, and a mixed air outlet end at the other end, wherein a main ammonia gas tube is arranged on the mixer main body section; a first volute fin and a second volute fin are arranged inside the main ammonia gas tube; the main ammonia gas tube is arranged on the mixer main body section close to the air inlet end, extends into the mixer main body section, and is connected with a plurality of ammonia spraying tubes; the ammonia spraying tubes are uniformly distributed inside the mixer main body along the radial direction; a plurality of nozzles are uniformly distributed on each ammonia spraying tube. The ammonia gas and air mixer has the advantages of low pressure drop, uniform mixing of an ammonia gas and air, and simple structure.
Description
Technical field
The utility model relates to gas mixing apparatus, particularly ammonia, the air mixer in a kind of thermal power plant spray ammonia denitrating system.
Background technology
The main supply of electric power of China is coal-fired thermal power generation, and the coal-fired oxynitrides NOx producing causes optical haze and acid rain major pollutants matter, the Main Means of controlling NOx discharge is combustion product gases denitration, in the denitrating technique of numerous flue gases, SCR (SCR) is most effective, is also a kind of method that technology and technique are the most ripe, at present, the most frequently used SCR technology is based under the effect of metallic catalyst, utilizes ammonia that the NOx in flue gas is reduced into N
2and H
2o.In SCR denitrating system, whether ammonia and air can mix is an important factor that affects SCR denitration efficiency, so require very high to ammonia, air mixer.
Application number 201210137582.9 discloses a kind of gas mixer, comprises main air inlet pipe, sneaks into gas air inlet pipe, ring pipe, shunting taper inlet duct, mozzle, mixing chamber and choke apparatus; The described gas air inlet pipe of sneaking into is connected with ring pipe, described shunting taper inlet duct is comprised of a component stream tapered snorkel that is no less than 4, the wide mouth end of every shunting tapered snorkel is connected with ring pipe, the slot end of every shunting tapered snorkel is connected with main air inlet pipe, described main air inlet pipe is connected with mozzle, mozzle is also connected with mixing chamber, and described choke apparatus is arranged in the internal cavities of mixing chamber.This kind of mixer structure complexity, and there is choke apparatus, pressure drop is larger.
Application number 201020118776.0 discloses another kind of blender, comprising: the blender main body of a cylindrical structure; With the flow-disturbing parts that are fixed on the face of cylinder of described cylindrical structure; Wherein, described flow-disturbing parts are towards the direction away from the described face of cylinder, outwardly convex.This mixer structure is fairly simple, but mixed effect bad, and the uniformity is poor.
Although at present blender kind is many, all has some problems, as: blender pressure drop is large, mixture homogeneity is poor, complex structure etc.
Utility model content
The purpose of this utility model is to overcome the shortcoming that above-mentioned prior art exists, and provides that a kind of pressure drop is low, ammonia and air mix, ammonia, air mixer simple in structure.
The utility model comprises, a blender body comprises the blender main paragraph of an air intake end, that is positioned at described blender body one end in the middle of being positioned at and is positioned at a mixed gas outlet end of its other end; One ammonia supervisor is installed on described blender main paragraph, and inside is provided with one first volute fan sheet and one second volute fan sheet;
Described ammonia supervisor is arranged near on the blender main paragraph of air intake end, and stretch in blender main paragraph, be connected with some ammonia jet pipes, described ammonia jet pipe is radially uniformly distributed along it in described blender main paragraph, on every ammonia jet pipe, is uniformly distributed some nozzles.
Further, described ammonia jet pipe quantity is 8-10.
Further, described nozzle quantity is 8-10, and its internal diameter is 8-12mm.
Further, the distance of described the first volute fan sheet and ammonia jet pipe is 560-700mm, the distance of the second volute fan sheet and the first volute fan sheet is 300-500mm, the fan sheet vertical interlaced layout of the first volute fan sheet and the second volute fan sheet, the first volute fan sheet all becomes 30-60 ° of angle with the longitudinal axis of blender body with the second volute fan sheet.
Further, to enter flow path direction identical for the spout direction of described nozzle and the air of air intake end.
Further, described air intake end and mixed gas outlet end are reducer pipe.
The beneficial effects of the utility model are: simple in structure, it is identical that the spout direction of nozzle and air intake end air enter flow path direction, in the time of can avoiding air intake end pressure excessive, causes ammonia to recharge; Meanwhile, nozzle is radially uniformly distributed in blender main paragraph, is conducive to ammonia being uniformly distributed of blender main paragraph inside, and ammonia and air can evenly be mixed.Simultaneously, be arranged on the first volute fan sheet and the second volute fan sheet in blender main paragraph, can, so that ammonia and air fully mix, avoid the pressure drop that in blender body, layout deflection plate causes excessive, and can reduce the length of blender main paragraph, cost-saving.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of embodiment of the present utility model.
Fig. 2 be in Fig. 1 A-A to profile.
Fig. 3 be in Fig. 1 B-B to profile.
Fig. 4 be in Fig. 1 C-C to profile.
The specific embodiment
For above-mentioned feature and advantage of the present utility model can be become apparent, special embodiment below, and coordinate appended graphic being described in detail below.
Embodiment 1:
As shown in Figures 1 to 4, figure comprises blender body 1, ammonia supervisor the 5, first volute fan sheet 4 and the second volute fan sheet 3.Blender body 1 material is stainless steel, comprises that being positioned at the air intake end of blender body one end, the blender main paragraph in the middle of being positioned at and being positioned at its other end is mixed gas outlet end.Ammonia supervisor 5 is installed being positioned on the blender main paragraph of air intake end, ammonia supervisor 5 stretches in blender main paragraph, be connected with 8 ammonia jet pipes 2, 8 ammonia jet pipes 2 are radially uniformly distributed along it in described blender main paragraph, on each ammonia jet pipe 2, be uniformly distributed the nozzle that 8 internal diameters are 8mm, because nozzle is evenly distributed on the cross section of blender main paragraph, ammonia can evenly be sprayed in blender, be conducive to the even mixing of ammonia and air, ammonia supervisor 5, ammonia jet pipe 2 and nozzle material are stainless steel, the direction of nozzle and air intake end air enter flow path direction in the same way, in the time of can avoiding air intake end pressure excessive, cause ammonia to recharge.The first volute fan sheet 4 and the second volute fan sheet 3 are arranged on hybrid agent intersegmental part, its material is stainless steel, the first volute fan sheet 4 is 560mm with the distance of ammonia jet pipe 2, the distance of the second volute fan sheet 3 and the first volute fan sheet 4 is 300mm, the fan sheet vertical interlaced of the first volute fan sheet 4 and the second volute fan sheet 3 is arranged, the first volute fan sheet 4 all becomes 30 ° of angles with the longitudinal axis of blender main body 1 with the second volute fan sheet 3, the arrangement of the first volute fan sheet 4 and the second volute fan sheet 3 fully mixes ammonia and air, the pressure drop of avoiding the interior layout deflection plate of blender body 1 to cause is excessive, and can reduce the length of blender main paragraph, simple in structure.
Embodiment 2:
As shown in Figures 1 to 4, figure comprises blender body 1, ammonia supervisor the 5, first volute fan sheet 4 and the second volute fan sheet 3.Blender body 1 material is stainless steel, comprises that being positioned at the air intake end of blender body one end, the blender main paragraph in the middle of being positioned at and being positioned at its other end is mixed gas outlet end.Ammonia supervisor 5 is installed being positioned on the blender main paragraph of air intake end, ammonia supervisor 5 stretches in blender main paragraph, be connected with 8 ammonia jet pipes 2, 8 ammonia jet pipes 2 are radially uniformly distributed along it in described blender main paragraph, on each ammonia jet pipe 2, be uniformly distributed the nozzle that 10 internal diameters are 12mm, because nozzle is evenly distributed on the cross section of blender main paragraph, ammonia can evenly be sprayed in blender, be conducive to the even mixing of ammonia and air, ammonia supervisor 5, ammonia jet pipe 2 and nozzle material are stainless steel, the direction of nozzle and air intake end air enter flow path direction in the same way, in the time of can avoiding air intake end pressure excessive, cause ammonia to recharge.The first volute fan sheet 4 and the second volute fan sheet 3 are arranged on hybrid agent intersegmental part, its material is stainless steel, the first volute fan sheet 4 is 700mm with the distance of ammonia jet pipe 2, the distance of the second volute fan sheet 3 and the first volute fan sheet 4 is 500mm, the fan sheet vertical interlaced of the first volute fan sheet 4 and the second volute fan sheet 3 is arranged, the first volute fan sheet 4 all becomes 30 ° of angles with the longitudinal axis of blender main body 1 with the second volute fan sheet 3, the arrangement of the first volute fan sheet 4 and the second volute fan sheet 3 fully mixes ammonia and air, the pressure drop of avoiding the interior layout deflection plate of blender body 1 to cause is excessive, and can reduce the length of blender main paragraph, simple in structure.The difference of the present embodiment and embodiment 1 is, the number of nozzle is 10, and its internal diameter is 12mm.
By reference to the accompanying drawings the specific embodiment of the present utility model and embodiment are described in detail above, but the utility model is not limited to the above-described embodiment and examples, in the ken possessing those skilled in the art, can also under the prerequisite that does not depart from design of the present utility model, make a variety of changes.
Claims (10)
1. ammonia, the air mixer in ammonia denitrating system sprayed in thermal power plant, comprising:
One blender body, comprises the blender main paragraph of an air intake end, that is positioned at described blender body one end in the middle of being positioned at and is positioned at a mixed gas outlet end of its other end;
It is characterized in that, an ammonia supervisor is installed on described blender main paragraph, inside is provided with one first volute fan sheet and one second volute fan sheet; Described ammonia supervisor is arranged near on the blender main paragraph of air intake end, and stretches in blender main paragraph, is connected with some ammonia jet pipes.
2. ammonia, the air mixer in thermal power plant spray ammonia denitrating system according to claim 1, is characterized in that, described ammonia jet pipe quantity is 8-10.
3. ammonia, the air mixer in thermal power plant spray ammonia denitrating system according to claim 1, is characterized in that, described ammonia jet pipe is radially uniformly distributed along it in described blender main paragraph, on every ammonia jet pipe, is uniformly distributed some nozzles.
4. ammonia, the air mixer in thermal power plant spray ammonia denitrating system according to claim 3, is characterized in that, described nozzle quantity is 8-10, and its internal diameter is 8-12mm.
5. according to ammonia, air mixer in the thermal power plant spray ammonia denitrating system described in claim 3 or 4 any one, it is characterized in that, it is identical that the spout direction of described nozzle and the air of air intake end enter flow path direction.
6. ammonia, the air mixer in thermal power plant spray ammonia denitrating system according to claim 1, is characterized in that, the distance of described the first volute fan sheet and ammonia jet pipe is 560-700mm.
7. ammonia, the air mixer in thermal power plant spray ammonia denitrating system according to claim 6, is characterized in that, the distance of the second volute fan sheet and the first volute fan sheet is 300-500mm.
8. ammonia, the air mixer in thermal power plant spray ammonia denitrating system according to claim 7, is characterized in that, the fan sheet vertical interlaced of the first volute fan sheet and the second volute fan sheet is arranged.
9. ammonia, the air mixer in thermal power plant spray ammonia denitrating system according to claim 8, is characterized in that, the first volute fan sheet all becomes 30-60 ° of angle with the longitudinal axis of blender body with the second volute fan sheet.
10. ammonia, the air mixer in thermal power plant spray ammonia denitrating system according to claim 1, is characterized in that, described air intake end and mixed gas outlet end are reducer pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320467680.9U CN203425725U (en) | 2013-08-01 | 2013-08-01 | Ammonia gas and air mixer in ammonia-spraying denitration system of thermal power plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320467680.9U CN203425725U (en) | 2013-08-01 | 2013-08-01 | Ammonia gas and air mixer in ammonia-spraying denitration system of thermal power plant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203425725U true CN203425725U (en) | 2014-02-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320467680.9U Expired - Lifetime CN203425725U (en) | 2013-08-01 | 2013-08-01 | Ammonia gas and air mixer in ammonia-spraying denitration system of thermal power plant |
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| CN (1) | CN203425725U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN104501169B (en) * | 2014-12-16 | 2016-01-20 | 华中科技大学 | For the First air note oxygen conglomerate integration device that rubbish oxygen enrichment burns |
| CN103990395B (en) * | 2014-05-16 | 2016-04-13 | 北京博智伟德环保科技有限公司 | A kind of ammonia/air mixer |
| CN105664747A (en) * | 2016-03-23 | 2016-06-15 | 北京新叶能源科技有限公司 | Static mixer for urea catalytic hydrolysis |
| 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 |
-
2013
- 2013-08-01 CN CN201320467680.9U patent/CN203425725U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103990395B (en) * | 2014-05-16 | 2016-04-13 | 北京博智伟德环保科技有限公司 | A kind of ammonia/air mixer |
| CN104501169B (en) * | 2014-12-16 | 2016-01-20 | 华中科技大学 | For the First air note oxygen conglomerate integration device that rubbish oxygen enrichment burns |
| 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 |
| CN105664747A (en) * | 2016-03-23 | 2016-06-15 | 北京新叶能源科技有限公司 | Static mixer for urea catalytic hydrolysis |
| 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 |
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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 | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 100097 Beijing Haidian District Zizhuyuan Road No. 120 Patentee after: DATANG ENVIRONMENT INDUSTRY GROUP Co.,Ltd. Patentee after: China Datang Technologies & Engineering Co.,Ltd. Address before: 100097 Beijing Haidian District Zizhuyuan Road No. 120 Patentee before: DATANG TECHNOLOGY INDUSTRY GROUP CO.,LTD. Patentee before: China Datang Technologies & Engineering Co.,Ltd. Address after: 100097 Beijing Haidian District Zizhuyuan Road No. 120 Patentee after: DATANG TECHNOLOGY INDUSTRY GROUP CO.,LTD. Patentee after: China Datang Technologies & Engineering Co.,Ltd. Address before: 100097 Beijing Haidian District Zizhuyuan Road No. 120 Patentee before: DATANG TECHNOLOGY INDUSTRY Co.,Ltd. Patentee before: China Datang Technologies & Engineering Co.,Ltd. Address after: 100097 Beijing Haidian District Zizhuyuan Road No. 120 Patentee after: DATANG TECHNOLOGY INDUSTRY Co.,Ltd. Patentee after: China Datang Technologies & Engineering Co.,Ltd. Address before: 100097 Beijing Haidian District Zizhuyuan Road No. 120 Patentee before: CHINA DATANG GROUP ENVIRONMENT TECHNOLOGY CO.,LTD. Patentee before: China Datang Technologies & Engineering Co.,Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20140212 |
|
| CX01 | Expiry of patent term |