CN215963022U - Novel vertical tube type ammonia-air mixer - Google Patents
Novel vertical tube type ammonia-air mixer Download PDFInfo
- Publication number
- CN215963022U CN215963022U CN202121793755.3U CN202121793755U CN215963022U CN 215963022 U CN215963022 U CN 215963022U CN 202121793755 U CN202121793755 U CN 202121793755U CN 215963022 U CN215963022 U CN 215963022U
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- China
- Prior art keywords
- air
- mixer
- ammonia
- pipeline
- mixer shell
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- 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
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- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims abstract description 110
- 229910021529 ammonia Inorganic materials 0.000 claims abstract description 49
- 238000007789 sealing Methods 0.000 claims description 18
- 239000007789 gas Substances 0.000 description 27
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 9
- 230000000694 effects Effects 0.000 description 5
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 3
- 239000003546 flue gas Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 238000010248 power generation Methods 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 238000010531 catalytic reduction reaction Methods 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000008246 gaseous mixture Substances 0.000 description 1
- 239000005431 greenhouse gas Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 229910000069 nitrogen hydride Inorganic materials 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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Abstract
The utility model relates to a novel vertical tube type ammonia-air mixer, which is characterized in that an air pipeline and an ammonia supply pipeline are designed, the air pipeline is divided into four gradually-expanding pipelines, the flow velocity of air in the mixer is reduced, the ammonia supply pipeline is also provided with four branch pipes led out at four heights corresponding to the four gradually-expanding pipelines, the branch pipes are provided with a plurality of through holes, the air at each height is fully mixed when passing through the through holes of the ammonia supply pipeline at the corresponding height, and is further mixed by an angle-adjustable guide plate, so that the aim of completely mixing ammonia gas and air is fulfilled, and the uniformity of mixing the ammonia gas and the air at the outlet of the ammonia-air mixer is greatly improved.
Description
Technical Field
The utility model relates to the technical field of mixing equipment for flue gas denitration, in particular to a novel vertical pipe type ammonia air mixer.
Background
The current power generation in China mainly comes from coal-fired thermal power generation and accounts for more than 70% of the total power generation. The atmospheric pollutants generated after coal combustion mainly comprise sulfur dioxide, nitrogen oxides, smoke dust (inhalable particles) and greenhouse gas carbon dioxide; due to the emission of coal and motor vehicles, the pollution of nitrogen oxides in China is very serious; in recent years, with the increasing demand for environmental protection, flue gas denitration devices have been increasingly added in utility boilers and other equipment (such as cement kilns and sintering machines) in order to reduce the emission of nitrogen oxides in flue gas.
The ammonia-air mixer is important equipment in the denitration technology, is used for mixing ammonia gas and air in a safe ratio, and then spraying the mixture into a flue for reaction; the uniformity of ammonia is very important to SCR deNOx systems, and on the one hand, the uniform ammonia spraying can improve the denitration efficiency and avoid the local area from being formed by NH3The denitration efficiency is reduced due to insufficient/NOx thousand ratio; on the other hand, the utilization rate of ammonia can be improved, the escape rate of ammonia in the exhaust tail gas is reduced, and the corrosion to subsequent equipment is reduced; traditional blender is mostly static mixer, and ammonia and air form layering easily and flow, mix inhomogeneous, and the catalytic reduction who leads to low reaches SCR denitration reactor reacts inhomogeneously, and local denitration effect is poor, and the ammonia utilization ratio is low to influence whole denitration effect of system and denitration efficiency, the ammonia of escape can corrode follow-up equipment.
Therefore, an ammonia-air mixer with good ammonia gas diffusion effect and excellent mixing uniformity becomes the first choice in the field.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems, the utility model provides a novel vertical pipe type ammonia air mixer.
The technical scheme of the utility model is as follows: a novel vertical tube type ammonia-air mixer comprises a mixer shell, a sealing cover plate, an air pipeline, an ammonia supply pipeline, a guide plate, a fixing ring and an angle adjusting mechanism; the mixer shell is provided with through holes on two walls, one end of the mixer shell is provided with a mixed gas outlet, the upper surface of the mixer shell is provided with a threaded hole, and the mixer shell is connected with a sealing cover plate through threads and sealed;
the air pipeline is arranged at the other end of the mixer shell opposite to the mixed gas outlet, one end of the air pipeline extends out of the surface of the mixer shell, and the other end of the air pipeline is divided into four pipelines with gradually-expanded pipe diameters after entering the mixer shell;
one end of the ammonia supply pipeline enters the mixer shell and then four branch pipes are led out, and a plurality of through holes are formed in the branch pipes;
one end of the guide plate is provided with a rotating shaft which forms a rotating pair with the fixing ring, and the fixing ring is connected to the inner walls of the two sides of the mixer shell by threads;
the angle adjusting mechanism comprises a square nut and a positioning rod, and one end of the positioning rod abuts against the guide plate.
The profile of the sealing cover plate is matched with the profile of the outer part of the mixer shell, the sealing cover plate is provided with a mounting hole matched with the diameter of the ammonia supply pipeline, and the other end of the ammonia supply pipeline extends out of the mounting hole and is mounted inside the mixer shell.
The front end of the air pipeline is a round pipe, the four pipes with gradually-expanded pipe diameters are square pipes, and the width of each square pipe is equal to the width of each branch pipe of the ammonia supply pipeline.
The four branch pipes of the ammonia supply pipeline correspond to the pipeline height of the four gradually-expanded pipe diameters of the air pipeline.
The square nut and the through holes on the two walls of the mixer shell are coaxial and fixed on the inner wall of the mixer shell.
The locating lever be equipped with square nut assorted external screw thread, the locating lever other section stretches out the blender casing.
The utility model has the beneficial technical effects that: the utility model relates to a novel vertical tube type ammonia-air mixer, which is characterized in that an air pipeline and an ammonia supply pipeline are designed, the air pipeline is divided into four gradually-expanding pipelines, the flow velocity of air in the mixer is reduced, four branch pipes are led out from the ammonia supply pipeline at four heights corresponding to the four gradually-expanding pipelines, a plurality of through holes are formed in the branch pipes, and the air at each height is fully mixed when passing through the through holes of the ammonia supply pipeline at the corresponding height and is further mixed by an angle-adjustable guide plate; the purpose of completely mixing ammonia and air is achieved, and the uniformity degree of mixing the ammonia and the air at the outlet of the ammonia-air mixer is improved.
Drawings
FIG. 1 is a perspective view of the vertical tube type ammonia air mixer of the present invention (with the sealing cover plate removed);
FIG. 2 is a perspective view of the sealing cover plate with bolts;
FIG. 3 is a top view of the riser ammonia air mixer of the present invention;
FIG. 4 is a cross-sectional view A-A of FIG. 3;
FIG. 5 is a front view of the vertical tube type ammonia-air mixer of the present invention;
FIG. 6 is a cross-sectional view B-B of FIG. 5;
FIG. 7 is an enlarged view taken at I in FIG. 6;
FIG. 8 is a perspective view of an air duct;
FIG. 9 is a perspective view of an ammonia supply conduit;
FIG. 10 is a front view of an ammonia supply conduit;
FIG. 11 is a perspective view of the angle adjustment mechanism;
fig. 12 is a perspective view of a baffle;
FIG. 13 is a schematic diagram of the riser ammonia air mixer of the present invention;
in the figure: 1. the mixer comprises a mixer shell, a threaded hole 101, a mixed gas outlet 102, a through hole 103, a sealing cover plate 2, a mounting hole 201, a thread 202, an air pipeline 3, an ammonia supply pipeline 4, a gas inlet pipe 2, a gas outlet pipe 2, a gas inlet pipe 2, a gas outlet pipe 3, a gas outlet pipe 2, a gas inlet pipe 2, a gas outlet pipe 3, a gas outlet pipe 4, a gas outlet pipe 2, a gas inlet pipe 2, a gas outlet pipe 3, a gas inlet pipe 4, a gas outlet pipe 2, a gas inlet pipe 2, a gas outlet pipe 4, a gas inlet pipe 4, and a gas outlet pipe,
5. The device comprises a guide plate, 51 rotating shafts, 6 fixing rings, 7 square nuts, 8 positioning rods, 9 air, 91 ammonia gas and 92 mixed gas.
Detailed Description
The first embodiment is as follows: referring to fig. 1-13, a novel vertical tube type ammonia-air mixer is shown, which comprises a mixer shell, a sealing cover plate, an air pipeline, an ammonia supply pipeline, a guide plate, a fixing ring and an angle adjusting mechanism; the mixer shell is provided with through holes on two walls, one end of the mixer shell is provided with a mixed gas outlet, the upper surface of the mixer shell is provided with a threaded hole, and the mixer shell is connected with a sealing cover plate through threads and sealed;
the front end of the air pipeline is a round pipe, the air pipeline is arranged at the other end of the mixer shell opposite to the mixed gas outlet, one end of the air pipeline extends out of the surface of the mixer shell, the other end of the air pipeline enters the mixer shell and is divided into four pipelines with gradually-expanded pipe diameters, the four pipelines with gradually-expanded pipe diameters are square pipes, the width of the four pipelines is equal to the width of a branch pipe of the ammonia supply pipeline, and the flow rate of air in the ammonia-air mixer is reduced; one end of the ammonia supply pipeline enters the mixer shell and then leads out four branch pipes, a plurality of through holes are arranged on the branch pipes, and ammonia gas is output from the through holes, so that the diffusion range is wide, and the ammonia gas and air can be uniformly mixed;
one end of the guide plate is provided with a rotating shaft which forms a rotating pair with the fixing ring, and the fixing ring is connected to the inner walls of the two sides of the mixer shell by threads; the angle adjusting mechanism comprises a square nut and a positioning rod, one end of the positioning rod props against the guide plate, the positioning rod is provided with an external thread matched with the square nut, the other section of the positioning rod extends out of the mixer shell, the guide plate can rotate in a fixing ring, the guide plate is propped against by one end of the positioning rod, the angle of the guide plate can be changed by adjusting the length of the positioning rod, the angle of the guide plate can not be changed due to the self-locking property of the thread after the change, the guide plate with adjustable angle can be further selectively mixed, the aim of completely mixing ammonia gas and air is achieved, the other section of the positioning rod extends out of the mixer shell, the angle of the guide plate can be changed by operating the positioning rod through a tool outside, and the sealing cover plate does not need to be opened for operation;
the profile of the sealing cover plate is matched with the profile of the outer part of the mixer shell, the sealing cover plate is provided with a mounting hole matched with the diameter of the ammonia supply pipeline, and the other end of the ammonia supply pipeline extends out of the mounting hole and is mounted inside the mixer shell.
The four branch pipes of the ammonia supply pipeline correspond to the pipeline height of the four gradually-expanded pipe diameters of the air pipeline, and air at each height is fully mixed when passing through the through holes of the ammonia supply pipeline at the corresponding height.
The square nut and the through holes on the two walls of the mixer shell are coaxial and fixed on the inner wall of the mixer shell;
the working process is as follows: the mixed gas outlet of the mixer shell is connected with equipment needing ammonia-air mixed gas, an air pipeline is arranged in the mixer shell, and one end of the air pipeline is connected with a suction pump; the guide plate, the fixing ring and the angle adjusting mechanism are well installed, and the angle of the guide plate is well adjusted; adjusting the height of four branch pipes of the ammonia supply pipeline to correspond to the height of four pipes of the air pipeline with gradually-expanded pipe diameters, inserting the mounting hole of the sealing cover plate into the ammonia supply pipeline and then sealing the ammonia supply pipeline by using a bolt, wherein one end of the ammonia supply pipeline is connected with ammonia equipment; air and ammonia gas are input, the flow velocity of the air in the pipeline with the gradually-expanded pipe diameter is reduced, the air and the ammonia gas which flows out from the branch pipe penetrating through the through hole are mixed for the first time, and the air and the ammonia gas are further mixed in the guide plate area with the adjustable angle, so that the aim of completely mixing the ammonia gas and the air is fulfilled; if need come readjustment guide plate's angle according to the gas flow rate or change the mixed effect midway, can externally change the guide plate angle through instrument operation locating lever, need not open sealed apron operation, and finally, the empty gaseous equipment that flows into needs the empty gaseous mixture of ammonia from the mist outlet of mixing after the mixture.
Claims (6)
1. The utility model provides a novel riser formula ammonia air-to-air blender, characterized by: comprises a mixer shell, a sealing cover plate, an air pipeline, an ammonia supply pipeline, a guide plate, a fixing ring and an angle adjusting mechanism; the mixer shell is provided with through holes on two walls, one end of the mixer shell is provided with a mixed gas outlet, the upper surface of the mixer shell is provided with a threaded hole, and the mixer shell is connected with a sealing cover plate through threads and sealed;
the air pipeline is arranged at the other end of the mixer shell opposite to the mixed gas outlet, one end of the air pipeline extends out of the surface of the mixer shell, and the other end of the air pipeline is divided into four pipelines with gradually-expanded pipe diameters after entering the mixer shell;
one end of the ammonia supply pipeline enters the mixer shell and then four branch pipes are led out, and a plurality of through holes are formed in the branch pipes;
one end of the guide plate is provided with a rotating shaft which forms a rotating pair with the fixing ring, and the fixing ring is connected to the inner walls of the two sides of the mixer shell by threads;
the angle adjusting mechanism comprises a square nut and a positioning rod, and one end of the positioning rod abuts against the guide plate.
2. The novel vertical pipe type ammonia-air mixer as claimed in claim 1, wherein: the profile of the sealing cover plate is matched with the profile of the outer part of the mixer shell, the sealing cover plate is provided with a mounting hole matched with the diameter of the ammonia supply pipeline, and the other end of the ammonia supply pipeline extends out of the mounting hole and is mounted inside the mixer shell.
3. The novel vertical pipe type ammonia-air mixer as claimed in claim 1, wherein: the front end of the air pipeline is a round pipe, the four pipes with gradually-expanded pipe diameters are square pipes, and the width of each square pipe is equal to the width of each branch pipe of the ammonia supply pipeline.
4. The novel vertical pipe type ammonia-air mixer as claimed in claim 1, wherein: the four branch pipes of the ammonia supply pipeline correspond to the pipeline height of the four gradually-expanded pipe diameters of the air pipeline.
5. The novel vertical pipe type ammonia-air mixer as claimed in claim 1, wherein: the square nut and the through holes on the two walls of the mixer shell are coaxial and fixed on the inner wall of the mixer shell.
6. The novel vertical pipe type ammonia-air mixer as claimed in claim 1, wherein: the locating lever be equipped with square nut assorted external screw thread, the locating lever other section stretches out the blender casing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121793755.3U CN215963022U (en) | 2021-08-03 | 2021-08-03 | Novel vertical tube type ammonia-air mixer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121793755.3U CN215963022U (en) | 2021-08-03 | 2021-08-03 | Novel vertical tube type ammonia-air mixer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215963022U true CN215963022U (en) | 2022-03-08 |
Family
ID=80576853
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121793755.3U Expired - Fee Related CN215963022U (en) | 2021-08-03 | 2021-08-03 | Novel vertical tube type ammonia-air mixer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215963022U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115138313A (en) * | 2022-06-28 | 2022-10-04 | 杭州德泓科技有限公司 | Polymerization device for polylactic acid production |
| CN116920595A (en) * | 2023-09-18 | 2023-10-24 | 中建材环保研究院（江苏）有限公司 | Industrial flue gas desulfurization, denitrification and dust removal integrated system |
-
2021
- 2021-08-03 CN CN202121793755.3U patent/CN215963022U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115138313A (en) * | 2022-06-28 | 2022-10-04 | 杭州德泓科技有限公司 | Polymerization device for polylactic acid production |
| CN115138313B (en) * | 2022-06-28 | 2024-05-28 | 杭州德泓科技有限公司 | Polymerization reaction device for polylactic acid production |
| CN116920595A (en) * | 2023-09-18 | 2023-10-24 | 中建材环保研究院（江苏）有限公司 | Industrial flue gas desulfurization, denitrification and dust removal integrated system |
| CN116920595B (en) * | 2023-09-18 | 2023-12-22 | 中建材环保研究院（江苏）有限公司 | Industrial flue gas desulfurization, denitrification and dust removal integrated system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220308 |