CN203886437U - High-efficiency ammonia gas and air mixer for selective catalytic reduction (SCR) denitrification device - Google Patents
High-efficiency ammonia gas and air mixer for selective catalytic reduction (SCR) denitrification device Download PDFInfo
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- CN203886437U CN203886437U CN201420306156.8U CN201420306156U CN203886437U CN 203886437 U CN203886437 U CN 203886437U CN 201420306156 U CN201420306156 U CN 201420306156U CN 203886437 U CN203886437 U CN 203886437U
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Abstract
The utility model discloses a high-efficiency ammonia gas and air mixer for a selective catalytic reduction (SCR) denitrification device. The high-efficiency ammonia gas and air mixer comprises an air input tube (1), wherein the air input tube (1) is connected to the front end of a mixing tube (4) through a flaring (2); the rear end of the mixing tube (4) is connected with an output tube (9) through a closing port (8); the mixing tube (4) is horizontally arranged; an ammonia gas input tube (3) is arranged at the front end of the mixing tube (4); the ammonia gas input tube (3) vertically penetrates through the mixing tube (4); an ammonia gas outlet of the ammonia gas input tube (3) is a bending section which faces the rear end of the mixing tube (4); and a triple helix guide mixing component is arranged in the ammonia gas input tube (3) and is positioned at the rear end of the ammonia gas input tube (3). According to the high-efficiency ammonia gas and air mixer, the ammonia gas and air can be efficiently mixed, and the mixing uniformity can be effectively improved.
Description
Technical field
The utility model relates to a kind of efficient ammonia air mixer of SCR denitrification apparatus, belongs to environmental protection equipment technical field.
Background technology
SCR denitration technology is high with its removal efficiency, adapt to current environmental requirement and obtain power industry pay much attention to and widely application.In for example Germany of the strict developed country of environmental requirement, Japan, the U.S., Canada, Holland, Austria, Sweden, the state SCR denitration technologies such as Denmark be apply at most, one of the most ripe technology.According to the experience of developed country, SCR denitration technology will inevitably become the main denitration technology of China's firepower power station coal-burning boiler and obtain applying more and more widely.SCR system generally sprays into system, reactor assembly, detection control system etc. by stocking system, ammonia and air hybrid system, the ammonia of ammonia and forms.Liquefied ammonia from liquefied ammonia tank vehicle by the discharging compressor liquefied ammonia storage tank of making a gift to someone, after being evaporated to ammonia, evaporator tank enters people's boiler area by ammonia dashpot and conveyance conduit again, react by entering SCR inside reactor after being distributed by ammonia-spraying grid after evenly mixing with air, SCR reactor is arranged at before air preheater, ammonia is above SCR reactor, be uniformly distributed mixing by a kind of special sprayer unit and flue gas, after mixing, flue gas carries out reduction reaction by catalyst in reactor layer.In this course of work, the mixture homogeneity of ammonia and air is very important to follow-up reduction reaction efficiency.
Utility model content
The purpose of this utility model is, a kind of efficient ammonia air mixer of SCR denitrification apparatus is provided.It can mix ammonia and air efficiently, and can effectively improve the uniformity of mixing.
The technical solution of the utility model: the efficient ammonia air mixer of SCR denitrification apparatus, be characterized in: the efficient ammonia air mixer of SCR denitrification apparatus, be characterized in: comprise air input pipe, air input pipe links to the front end of mixing tube by an enlarging, the rear end of mixing tube is connected with efferent duct by a closing in, and what finally form is the thin tube chamber in thick two, a centre; Described mixing tube is horizontally disposed with, and the front end of mixing tube is also provided with ammonia input pipe, and ammonia input pipe is vertically through mixing tube, and the ammonia outlet of ammonia input pipe is to point to a bending segment of mixing tube rear end; In described ammonia input pipe, be also provided with triple helices water conservancy diversion electric hybrid module, triple helices water conservancy diversion electric hybrid module is positioned at the rear end of ammonia input pipe.
In the efficient ammonia air mixer of above-mentioned SCR denitrification apparatus, described triple helices water conservancy diversion electric hybrid module comprises central shaft; On central shaft, from front end to rear end, be provided with successively the first fixing conducting element, rotate conducting element and the second fixing conducting element; The described first fixing conducting element and the second fixing conducting element are fixed on central shaft, and the first fixing conducting element and the second fixing conducting element include multiple three fan-shaped sloping baffles that are distributed on outside central shaft; Described rotation conducting element comprises the bearing being set on central shaft and is distributed on three fan-shaped sloping baffles outside bearing.In the time that air and ammonia together blow to triple helices water conservancy diversion electric hybrid module, the first fixing conducting element makes gas form vortex, thereby mix for the first time, to rotate under airflow function and rotate conducting element, rotary course is broken up air-flow, can complete for the second time and mix, the fixing conducting element of the second last mixes for the third time to gas again.
In the efficient ammonia air mixer of aforesaid SCR denitrification apparatus, fan-shaped sloping baffle and the central shaft of the described first fixing conducting element, rotation conducting element and the second fixing conducting element are 45 ° of inclination angles.
In the efficient ammonia air mixer of aforesaid SCR denitrification apparatus, the fan-shaped sloping baffle of the described first fixing conducting element and the second fixing conducting element staggers 60 ° and arranges, and staggering of angle can fully improve mixing efficiency.
Compared with prior art, the utility model, by different calibers, spreads the air and the ammonia that enter, then utilizes the first fixing conducting element, rotation conducting element and the second fixing conducting element of triple helices water conservancy diversion electric hybrid module to carry out triple diffusion.The utility model can improve the mixture homogeneity of ammonia and air greatly, and the utility model is little to the resistance of air-flow, and therefore flow velocity is very fast, and the efficiency of mixing is also higher.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the structural representation of the utility model triple helices water conservancy diversion electric hybrid module;
Fig. 3 is the side view of the utility model triple helices water conservancy diversion electric hybrid module.
Detailed description of the invention
Below in conjunction with drawings and Examples, the utility model is further described, but not as the foundation to the utility model restriction.
Embodiment.The efficient ammonia air mixer of SCR denitrification apparatus, as shown in Figure 1: comprise air input pipe 1, air input pipe 1 links to the front end of mixing tube 4 by an enlarging 2, the rear end of mixing tube 4 is connected with efferent duct 9 by a closing in 8; Described mixing tube 4 is horizontally disposed with, and the front end of mixing tube 4 is also provided with ammonia input pipe 3, and ammonia input pipe 3 is vertically through mixing tube 4, and the ammonia outlet of ammonia input pipe 3 is to point to a bending segment of mixing tube 4 rear ends; In described ammonia input pipe 3, be also provided with triple helices water conservancy diversion electric hybrid module, triple helices water conservancy diversion electric hybrid module is positioned at the rear end of ammonia input pipe 3.
Described triple helices water conservancy diversion electric hybrid module, comprises central shaft 10; On central shaft 10, from front end to rear end, be provided with successively the first fixing conducting element 5, rotate conducting element 6 and the second fixing conducting element 7; The described first fixing conducting element 5 and the second fixing conducting element 7 are fixed on central shaft 10, and the first fixing conducting element 5 and the second fixing conducting element 7 include multiple three fan-shaped sloping baffles that are distributed on outside central shaft; Described rotation conducting element 6 comprises the bearing being set on central shaft 10 and is distributed on three fan-shaped sloping baffles outside bearing.Fan-shaped sloping baffle and the central shaft 10 of the described first fixing conducting element 5, rotation conducting element 6 and the second fixing conducting element 7 are 45 ° of inclination angles, as shown in Figure 3.The fan-shaped sloping baffle of the described first fixing conducting element 5 and the second fixing conducting element 7 staggers 60 ° and arranges, as shown in Figure 2.
Operation principle of the present utility model: air enters mixing tube from air input pipe, because caliber becomes suddenly large, air spreads rapidly, then ammonia enters mixing tube from ammonia input pipe and tentatively mixes with air, then the fixing conducting element of the fixing conducting element first of the preliminary air impingement to the first mixing makes gas form vortex, thereby mix for the first time, to rotate under airflow function and rotate conducting element, rotary course is broken up air-flow, can complete for the second time and mix, the fixing conducting element of the second last mixes for the third time to gas again.
Claims (4)
- The efficient ammonia air mixer of 1.SCR denitrification apparatus, it is characterized in that: comprise air input pipe (1), air input pipe (1) links to the front end of mixing tube (4) by an enlarging (2), the rear end of mixing tube (4) is connected with efferent duct (9) by a closing in (8); Described mixing tube (4) is horizontally disposed with, the front end of mixing tube (4) is also provided with ammonia input pipe (3), ammonia input pipe (3) is vertically through mixing tube (4), and the ammonia outlet of ammonia input pipe (3) is for pointing to a bending segment of mixing tube (4) rear end; In described ammonia input pipe (3), be also provided with triple helices water conservancy diversion electric hybrid module, triple helices water conservancy diversion electric hybrid module is positioned at the rear end of ammonia input pipe (3).
- 2. the efficient ammonia air mixer of SCR denitrification apparatus according to claim 1, is characterized in that: described triple helices water conservancy diversion electric hybrid module comprises central shaft (10); Central shaft (10) is upper, is provided with successively the first fixing conducting element (5), rotates conducting element (6) and the second fixing conducting element (7) from front end to rear end; It is upper that the described first fixing conducting element (5) and the second fixing conducting element (7) are fixed on central shaft (10), and the first fixing conducting element (5) and the second fixing conducting element (7) include multiple three fan-shaped sloping baffles that are distributed on outside central shaft; Described rotation conducting element (6) comprises the bearing being set on central shaft (10) and is distributed on three fan-shaped sloping baffles outside bearing.
- 3. the efficient ammonia air mixer of SCR denitrification apparatus according to claim 2, is characterized in that: fan-shaped sloping baffle and the central shaft (10) of the described first fixing conducting element (5), rotation conducting element (6) and the second fixing conducting element (7) are 45 ° of inclination angles.
- 4. the efficient ammonia air mixer of SCR denitrification apparatus according to claim 2, is characterized in that: the 60 ° of settings of staggering of the described first fixing conducting element (5) and the second fan-shaped sloping baffle of fixing conducting element (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420306156.8U CN203886437U (en) | 2014-06-10 | 2014-06-10 | High-efficiency ammonia gas and air mixer for selective catalytic reduction (SCR) denitrification device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420306156.8U CN203886437U (en) | 2014-06-10 | 2014-06-10 | High-efficiency ammonia gas and air mixer for selective catalytic reduction (SCR) denitrification device |
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| CN203886437U true CN203886437U (en) | 2014-10-22 |
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| CN201420306156.8U Active CN203886437U (en) | 2014-06-10 | 2014-06-10 | High-efficiency ammonia gas and air mixer for selective catalytic reduction (SCR) denitrification device |
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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 |
| CN107321183A (en) * | 2017-08-30 | 2017-11-07 | 中国新时代国际工程公司 | A kind of SCR denitration device |
| CN108757125A (en) * | 2018-06-19 | 2018-11-06 | 中国船舶重工集团柴油机有限公司 | A kind of improved selective catalytic reduction device suitable for boat diesel engine |
| CN110237734A (en) * | 2019-06-10 | 2019-09-17 | 中国石油大学(北京) | Gas mixer and emission-control equipment |
| JP7385956B1 (en) | 2022-10-05 | 2023-11-24 | カンケンテクノ株式会社 | Gas abatement equipment and gas treatment method |
-
2014
- 2014-06-10 CN CN201420306156.8U patent/CN203886437U/en active Active
Cited By (6)
| 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 |
| CN107321183A (en) * | 2017-08-30 | 2017-11-07 | 中国新时代国际工程公司 | A kind of SCR denitration device |
| CN108757125A (en) * | 2018-06-19 | 2018-11-06 | 中国船舶重工集团柴油机有限公司 | A kind of improved selective catalytic reduction device suitable for boat diesel engine |
| CN110237734A (en) * | 2019-06-10 | 2019-09-17 | 中国石油大学(北京) | Gas mixer and emission-control equipment |
| JP7385956B1 (en) | 2022-10-05 | 2023-11-24 | カンケンテクノ株式会社 | Gas abatement equipment and gas treatment method |
| WO2024075312A1 (en) * | 2022-10-05 | 2024-04-11 | カンケンテクノ株式会社 | Gas removal apparatus and gas treatment method |
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