CN204276205U - A kind of high pressure fine water fog spraying gun for SNCR denitration system - Google Patents
A kind of high pressure fine water fog spraying gun for SNCR denitration system Download PDFInfo
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- CN204276205U CN204276205U CN201420674419.0U CN201420674419U CN204276205U CN 204276205 U CN204276205 U CN 204276205U CN 201420674419 U CN201420674419 U CN 201420674419U CN 204276205 U CN204276205 U CN 204276205U
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- gun barrel
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- atomizer
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Abstract
The utility model relates to a kind of high pressure fine water fog spraying gun for SNCR denitration system, can effectively solve SNCR denitrification spray gun easy to wear, corrosion, and atomizing particle is large, the problem that result of use is unsatisfactory, technical scheme is, interior gun barrel is installed on center in outer gun barrel, outer gun barrel is stretched out in one end, stretch out one end to be connected with reducing agent entrance, the other end is connected with the import of the atomizer being contained in outer gun barrel end, cavity between the tube wall of interior gun barrel and the inboard wall of tube body of outer gun barrel is configured for the compressed air channel protecting interior gun barrel, one end that outer gun barrel is equipped with atomizer has the compressed air outlet be connected with compressed air channel, the sidewall of outer gun barrel has compressed air inlet port, the utility model atomizing particle particle diameter reaches 1 ~ 100 μm, adopt gun barrel in compressed air thermal insulation protection, spray gun is made at high temperature to keep high strength, corrosion resistance and high-wearing feature, can ensure that spray ammonia regional sustained is balanced, easy to use, effective.
Description
Technical field
The utility model relates to spray gun, particularly a kind of high pressure fine water fog spraying gun for SNCR denitration system.
Background technology
SNCR denitration technology is sprayed in Boiler Furnace by spray gun by the reducing agent such as ammoniacal liquor, urea to carry out selective reaction with NOx, without catalyst, therefore must add reducing agent in high-temperature region.Reducing agent sprays into the region that fire box temperature is 850 ~ 1100 DEG C, rapid thermal decomposition becomes NH3, react with the NOx in flue gas and generate N2 and water, due to the operating temperature of SNCR denitrification spray gun higher (flue-gas temperature 850 DEG C-1100 DEG C), and flue gas flow rate is also fast, a large amount of dust is carried secretly in flue gas, tradition SNCR denitrification spray gun is due to its structural problem, compressed air and reductant solution adopt same pipeline, reductant solution is adopted directly to be atomized the mode combined with compressed air secondary-atomizing, this mode is due in high temperature environments, be difficult to play a protective role to reducing agent pipeline, easy to wear, corrosion, and atomizing particle is large, be difficult to meet instructions for use, result of use is unsatisfactory, therefore, the improvement and bring new ideas of spray gun is imperative.
Summary of the invention
For above-mentioned situation, for overcoming the defect of prior art, the object of the utility model is just to provide a kind of high pressure fine water fog spraying gun for SNCR denitration system, can effectively solve SNCR denitrification spray gun easy to wear, corrosion, and atomizing particle is large, the problem that result of use is unsatisfactory.
The technical scheme that the utility model solves is; comprise outer gun barrel, interior gun barrel and atomizer; interior gun barrel is installed on center in outer gun barrel; outer gun barrel is stretched out in one end; stretch out one end to be connected with reducing agent entrance; the other end is connected with the import of the atomizer being contained in outer gun barrel end; cavity between the tube wall of interior gun barrel and the inboard wall of tube body of outer gun barrel is configured for the compressed air channel protecting interior gun barrel; one end that outer gun barrel is equipped with atomizer has the compressed air outlet be connected with compressed air channel, and the sidewall of outer gun barrel has compressed air inlet port.
Described reducing agent entrance is connected with the outlet of heavy pressure fine spray system; Described heavy pressure fine spray system comprises frame, liquid reserve tank, filter, high-pressure pump and high-pressure water mist spray head, liquid reserve tank, filter, low pressure ball valve, high-pressure pump and high-pressure ball valve frame be equipped with successively, the delivery port of liquid reserve tank is connected through the water inlet of filter with low pressure ball valve, the delivery port of low pressure ball valve is connected with the water inlet of high-pressure pump, the delivery port of high-pressure pump is connected with the water inlet of high-pressure ball valve, the delivery port of high-pressure ball valve is connected with high-pressure water mist spray head through pressure duct, and the outlet of high-pressure water mist spray head is connected with reducing agent entrance.
The utility model novel structure is unique; advantages of simple; easy production, easy to operate, atomizing particle particle diameter reaches 1 ~ 100 μm; adopt gun barrel in compressed air thermal insulation protection; make spray gun at high temperature keep high strength, corrosion resistance and high-wearing feature, can ensure that spray ammonia region (or spray urea region) continues balanced, easy to use; effective, be the innovation on spray gun.
Accompanying drawing explanation
Fig. 1 is sectional front view of the present utility model.
Fig. 2 is that the A-A of the utility model Fig. 1 is to sectional view.
Fig. 3 is the stereogram of the utility model filtering bodies.
Detailed description of the invention
Below in conjunction with accompanying drawing, detailed description of the invention of the present utility model is described in further detail.
Provided by Fig. 1-3, the utility model comprises outer gun barrel, interior gun barrel and atomizer, interior gun barrel 5 is installed on center in outer gun barrel 3, outer gun barrel 3 is stretched out in one end, stretch out one end to be connected with reducing agent entrance 7, the other end is connected with the import of the atomizer 1 being contained in outer gun barrel 3 end, cavity between the tube wall of interior gun barrel 5 and the inboard wall of tube body of outer gun barrel 3 is configured for the compressed air channel 5a protecting interior gun barrel, one end that outer gun barrel 3 is equipped with atomizer has the compressed air outlet 2 be connected with compressed air channel 5a, the sidewall of outer gun barrel 3 has compressed air inlet port 6.
For ensureing result of use, described outer gun barrel 3 is the hollow structure of one end open, the oral area of outer gun barrel 3 is equipped with end cap 3a, atomizer 1 end cap 3a is equipped with, the outside of atomizer 1 has inside and outside through compressed air outlet 2 on end cap, compressed air inlet port 6 is arranged on the sealed end of outer gun barrel 3, and interior gun barrel 5 stretches into center in outer gun barrel 3 through the sealed end of outer gun barrel 3, stretches into one end and is connected with the import of atomizer 1;
The adpting flange 4 for being connected with boiler described outer gun barrel 3 is equipped with;
Described reducing agent entrance 7 is connected with the outlet of heavy pressure fine spray system, described heavy pressure fine spray system comprises frame 18, liquid reserve tank 12, filter 16, high-pressure pump 14 and high-pressure water mist spray head 9, frame 18 is equipped with liquid reserve tank 12 successively, filter 16, low pressure ball valve 15, high-pressure pump 14 and high-pressure ball valve 17, the delivery port of liquid reserve tank 12 is connected through the water inlet of filter 16 with low pressure ball valve 15, the delivery port of low pressure ball valve 15 is connected with the water inlet of high-pressure pump 14, the delivery port of high-pressure pump 14 is connected with the water inlet of high-pressure ball valve 17, the delivery port of high-pressure ball valve 17 is connected with high-pressure water mist spray head 9 through pressure duct 8, the outlet of high-pressure water mist spray head 9 is connected with reducing agent entrance 7,
Pipeline between described filter 16 and low pressure ball valve 15 is equipped with pressure sensor; Reductant solution liquid-feeding tube 12a described liquid reserve tank 12 is equipped with; Described high-pressure pump 14 is connected with the battery 10 be contained in frame 17; The delivery port of described high-pressure pump 14 is connected through the water inlet of overflow valve 11 with liquid reserve tank 12; Hanging nose 13 is equipped with in described frame 18 front end;
Described high-pressure water mist spray head 9 and atomizer 1 patent No. be as applicant's earlier application be 200420074456.4 the dual-purpose shower nozzle of mobile high-voltage single-fluid water mist or the patent No. be " super fine mist spraying head " of " 200610017940.7 ".
When the present invention uses, frame 18 is connected with power-equipment through hanging nose 13, high-pressure pump 14 is under the situation run well, be contained in reductant solution (ammoniacal liquor, urea etc.) in liquid reserve tank 12 through filter 16, pressure duct 8 is delivered to by high-pressure pump 14, and ejection after high-pressure water mist spray head 9 is atomized, enter interior gun barrel 5 by reducing agent entrance 7, spray and reaction of nitrogen oxides in boiler finally by atomizer 1, reach denitration object; Compressed air enters compressed air channel 5a by compressed air inlet 6, and internal gun barrel plays a protective role, and finally discharges discharge by compressed air outlet 2; Spray gun is connected with boiler by adpting flange 4; Pressure sensor in heavy pressure fine spray system is used for ensureing that high-pressure pump 14 operates under normal operating pressure, and overflow valve 11 is used for the operating pressure of adjusting high-pressure pump 14.Reducing agent presents water mists state after high-pressure water mist spray head 9 sprays, and mist particle diameter is 1-100 μm, and reducing agent through filter 16, can reduce the possibility of reducing agent blocking high-pressure water mist spray head 9 before entering high-pressure pump 14; Unnecessary reducing agent is back in liquid reserve tank 12 by overflow valve 11; High-pressure pump adopts high pressure volume formula plunger displacement pump; pressure is greater than 10MPa; droplet due to heavy pressure fine spray does three-dimensional motion in the mode of High Speed Turbulent, rotation in space; ejection after with extraneous air fully entrainments, fragmentation, be atomized; the high-speed uniform water mists of diameter 1-10 μm can be produced; atomizing effect is good; droplet speed is high, density is large; and the compressed air in compressed air channel 5a serves the effect of air heat insulation; well protect interior gun barrel; compared with prior art, the utility model has the following advantages:
1, easily manufactured, cost is lower, applied widely, is easy to promotion and implementation, has good economic benefit;
2, compressed air require and reducing agent flow individually adjustable, control convenient, simple;
3, SNCR high pressure fine water fog spraying gun spray angle is not from 10 °-150 ° etc., low-angle spray gun penetration capacity is strong, the spray gun area coverage of wide-angle is large, angle is by regulating reducing agent Flow-rate adjustment, simple to operate, be easy in Project Running Process reach optimal design according to field condition, higher denitration efficiency can be reached;
4, SNCR high pressure fine water fog spraying gun mist particle diameter is 1 ~ 100 μm, if project needs, mist particle diameter also can reach nanoscale.The nozzle bore of SNCR high pressure fine water fog spraying gun is various, easy for installation, can according to detailed programs, the atomizing particle particle diameter of design alternative the best;
5, SNCR high pressure fine water fog spraying gun adopts high temperature resistant, wear-resistant, resistant material making, and with gun barrel in compressed air thermal insulation protection, make spray gun at high temperature keep high strength, corrosion resistance and high-wearing feature, can ensure that spray ammonia region (or spray urea region) continues balanced;
6, spray gun tailored appearance, fast-assembling connect arrange, install, overhaul more convenient, work run safety and reliability;
7, atomizer is not afraid of stifled, and heavy pressure fine spray system working pressure is greater than 10MPa, and nozzle does not block, long service life;
8, heavy pressure fine spray system working pressure is greater than 10MPa, ensure that good atomizing effect.
Claims (5)
1. the high pressure fine water fog spraying gun for SNCR denitration system, comprise outer gun barrel, interior gun barrel and atomizer, it is characterized in that, interior gun barrel (5) is installed on outer gun barrel (3) interior center, outer gun barrel (3) is stretched out in one end, stretch out one end to be connected with reducing agent entrance (7), the other end is connected with the import of the atomizer (1) being contained in outer gun barrel (3) end, cavity between the tube wall of interior gun barrel (5) and the inboard wall of tube body of outer gun barrel (3) is configured for the compressed air channel (5a) protecting interior gun barrel, one end that outer gun barrel (3) is equipped with atomizer has the compressed air outlet (2) be connected with compressed air channel (5a), the sidewall of outer gun barrel (3) has compressed air inlet port (6).
2. the high pressure fine water fog spraying gun for SNCR denitration system according to claim 1, it is characterized in that, the hollow structure that described outer gun barrel (3) is one end open, the oral area of outer gun barrel (3) is equipped with end cap (3a), atomizer (1) end cap (3a) is equipped with, the outside of atomizer (1) has inside and outside through compressed air outlet (2) on end cap, compressed air inlet port (6) is arranged on the sealed end of outer gun barrel (3), interior gun barrel (5) stretches into outer gun barrel (3) interior center through the sealed end of outer gun barrel (3), stretch into one end to be connected with the import of atomizer (1).
3. the high pressure fine water fog spraying gun for SNCR denitration system according to claim 1, is characterized in that, described outer gun barrel (3) is equipped with the adpting flange (4) for being connected with boiler.
4. the high pressure fine water fog spraying gun for SNCR denitration system according to claim 1, is characterized in that, described reducing agent entrance (7) is connected with the outlet of heavy pressure fine spray system.
5. the high pressure fine water fog spraying gun for SNCR denitration system according to claim 1, it is characterized in that, described heavy pressure fine spray system comprises frame (18), liquid reserve tank (12), filter (16), high-pressure pump (14) and high-pressure water mist spray head (9), liquid reserve tank (12) frame (18) is equipped with successively, filter (16), low pressure ball valve (15), high-pressure pump (14) and high-pressure ball valve (17), the delivery port of liquid reserve tank (12) is connected through the water inlet of filter (16) with low pressure ball valve (15), the delivery port of low pressure ball valve (15) is connected with the water inlet of high-pressure pump (14), the delivery port of high-pressure pump (14) is connected with the water inlet of high-pressure ball valve (17), the delivery port of high-pressure ball valve (17) is connected with high-pressure water mist spray head (9) through pressure duct (8), the outlet of high-pressure water mist spray head (9) is connected with reducing agent entrance (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420674419.0U CN204276205U (en) | 2014-11-13 | 2014-11-13 | A kind of high pressure fine water fog spraying gun for SNCR denitration system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420674419.0U CN204276205U (en) | 2014-11-13 | 2014-11-13 | A kind of high pressure fine water fog spraying gun for SNCR denitration system |
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| CN204276205U true CN204276205U (en) | 2015-04-22 |
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|---|---|---|---|
| CN201420674419.0U Withdrawn - After Issue CN204276205U (en) | 2014-11-13 | 2014-11-13 | A kind of high pressure fine water fog spraying gun for SNCR denitration system |
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| CN (1) | CN204276205U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104353567A (en) * | 2014-11-13 | 2015-02-18 | 河南海力特机电制造有限公司 | High pressure fine water mist spray gun for SNCR (selective non-catalytic reduction) denitration system |
| CN104948273A (en) * | 2015-05-13 | 2015-09-30 | 中国重汽集团济南动力有限公司 | Air assisting type urea injection system |
| CN104948276A (en) * | 2015-05-13 | 2015-09-30 | 中国重汽集团济南动力有限公司 | Air assisting type urea ejector |
| CN109290084A (en) * | 2018-10-08 | 2019-02-01 | 滁州市协众家电配件有限公司 | It is a kind of for spraying equipment without gas spray gun |
| CN113262627A (en) * | 2021-05-17 | 2021-08-17 | 西安交通大学 | System and method for synergistically removing oxynitride and oxysulfide by strong atomization |
-
2014
- 2014-11-13 CN CN201420674419.0U patent/CN204276205U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104353567A (en) * | 2014-11-13 | 2015-02-18 | 河南海力特机电制造有限公司 | High pressure fine water mist spray gun for SNCR (selective non-catalytic reduction) denitration system |
| CN104948273A (en) * | 2015-05-13 | 2015-09-30 | 中国重汽集团济南动力有限公司 | Air assisting type urea injection system |
| CN104948276A (en) * | 2015-05-13 | 2015-09-30 | 中国重汽集团济南动力有限公司 | Air assisting type urea ejector |
| CN109290084A (en) * | 2018-10-08 | 2019-02-01 | 滁州市协众家电配件有限公司 | It is a kind of for spraying equipment without gas spray gun |
| CN113262627A (en) * | 2021-05-17 | 2021-08-17 | 西安交通大学 | System and method for synergistically removing oxynitride and oxysulfide by strong atomization |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150422 Effective date of abandoning: 20160907 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |