CN203291990U - Reducing agent spraying gun suitable for SNCR denitration technology - Google Patents
Reducing agent spraying gun suitable for SNCR denitration technology Download PDFInfo
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- CN203291990U CN203291990U CN2013202946729U CN201320294672U CN203291990U CN 203291990 U CN203291990 U CN 203291990U CN 2013202946729 U CN2013202946729 U CN 2013202946729U CN 201320294672 U CN201320294672 U CN 201320294672U CN 203291990 U CN203291990 U CN 203291990U
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- reducing agent
- spray gun
- denitration technology
- sncr denitration
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Abstract
The utility model discloses a reducing agent spraying gun suitable for the SNCR denitration technology, and belongs to the technical field of atomization devices. The reducing agent spraying gun suitable for the SNCR denitration technology comprises a nozzle, a spraying gun body and a draught fan. The nozzle comprises a reducing agent outlet formed in the center of the nozzle, and an air outlet surrounding the reducing agent outlet, wherein a reducing agent pipeline which is communicated with the reducing agent outlet and a compressed air pipeline which is communicated with the air outlet are arranged in the spraying gun body, and the compressed air pipeline is communicated with the draught fan. The reducing agent spraying gun suitable for the SNCR denitration technology is simple and reliable in structure, capable of being prevented from being blocked and good in cooling effect, the design of pressure type atomization and a horn mouth is adopted so that the flowing speed can be raised, a reducing agent solution can deeply penetrate through the smoke so that the mixing degree of a reducing agent and the smoke can be increased, and the surface tension of liquid drops is damaged after the liquid is pumped by a firing pin so that the atomization effect can be remarkably enhanced.
Description
Technical field
The utility model belongs to the atomising device technical field, is particularly related to a kind of reducing agent spray gun of the SNCR of being applicable to denitration technology.
Background technology
The domestic waste combustion process can be discharged a large amount of NOx pollutants, has very large harmfulness.In industry at present, denitration means commonly used can be divided into denitration in the stove and the outer denitration of stove, and wherein SNCR method (SNCR) and selective catalytic reduction (SCR) are widely applied.The SNCR denitration technology is that amino reductive is sprayed into to 900～1100 ℃ of intervals in stove, and NOx is reduced to the nitrogen G&W.The SNCR denitration technology does not use catalyst, denitration efficiency is lower, but adopt burner hearth as reactor, have that equipment is simple, small investment, the advantage such as floor space is few and operating cost is low, especially being suitable for small-sized pulverized-coal fired boiler, CFBB, incinerator and cement decomposing furnace etc., is one of main development direction of present denitration.
The reducing agent that the SNCR denitration is adopted is mainly low concentration ammoniacal liquor or urea liquid, after atomization, sprays into burner hearth.Atomization quality is the key that determines mixed effect, comprises particle diameter distribution, speed and the atomization angle etc. of atomized drop.Therefore, the performance of reducing agent atomizing lance is extremely important in the SNCR denitrification process.
The pneumatic atomizing nozzle atomizing effect is better, but have that the gas consumption rate is high, gas consumption medium and reducing agent pressure is high, the power consumption large and the shortcomings such as complex structure.
The utility model content
The purpose of this utility model is to overcome the above-mentioned defect of mentioning and deficiency, and a kind of reducing agent spray gun of the SNCR of being applicable to denitration technology is provided.
The technical scheme that its purpose that realizes the utility model adopts is as follows:
A kind of reducing agent spray gun that is applicable to the SNCR denitration technology, comprise nozzle, spray gun and blower fan, described nozzle comprises the reducing agent outlet that is positioned at center and the air outlet slit that exports around reducing agent, in described spray gun, be provided with the reducing agent pipeline that is communicated with the reducing agent outlet and the compressed air piping that is communicated with air outlet slit, described compressed air piping is communicated with blower fan.
Described spray gun front end is provided with interior narrow outer wide horn mouth.
Described spray nozzle front end is equipped with striker.
Described spray gun is arranged with holder, and through hole is offered in described spray gun rear end, makes the gap between spray gun and holder be communicated with compressed air piping.
Described reducing agent pipeline left end is connected with hydraulic hose, and described hydraulic hose is communicated with first microcephaly by snap joint.
Described compressed air piping left end is taken over and is connected by second largest microcephaly and first, and described the first adapter is connected with bellows by hose clamp, and described bellows is taken over and the elbow connecting tee by second, and described threeway is taken over blower fan and is connected by blower fan.
Described spray gun rear end evenly is provided with 4 through holes.
This reducing agent spray gun compared with prior art, has following beneficial effect:
1. simple and reliable for structure, prevent from stopping up good cooling results;
2. adopt pressure type atomization and bell-mouthed design, flow velocity improves, and reductant solution penetrates into the degree of depth in flue gas, thereby has increased the mixability of reducing agent and flue gas;
3. liquid Surface Tension of Liquid Drops after striker clashes into is destroyed, thereby atomizing effect is obviously strengthened.
The accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is that the A of Fig. 1 is to the partial structurtes schematic diagram;
Fig. 3 is the B place partial enlarged drawing of Fig. 1;
Fig. 4 is nozzle front view of the present utility model;
In figure: 1-striker, 2-nozzle, the outlet of 2a-reducing agent, 2b-air outlet slit, 3-spray gun, 3a-reducing agent pipeline, 3b-compressed air piping, 3c-through hole, 4-holder, 5-hydraulic hose, 6-snap joint, the first microcephaly of 7-, the second largest microcephaly of 8-, 9-the first adapter, 10-bellows, 11-the second adapter, the adapter of 12-blower fan, 13-blower fan, 14-elbow, 15-threeway.
The specific embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
In the utility model, in the situation that do not do opposite explanation, the noun of locality of use typically refers to reference to upper and lower, left and right shown in the drawings as " upper and lower, left and right "; " inside and outside " refers to inside and outside with respect to the profile of each parts itself.
A kind of reducing agent spray gun that is applicable to the SNCR denitration technology, comprise nozzle 2, spray gun 3 and blower fan 13.Described nozzle 2 comprises the reducing agent outlet 2a that is positioned at center and the air outlet slit 2b that exports 2a around reducing agent, in described spray gun 3, be provided with the reducing agent pipeline 3a that is communicated with reducing agent outlet 2a and the compressed air piping 3b that is communicated with air outlet slit 2b, described compressed air piping 3b is communicated with blower fan 13.The high-speed air that blower fan 13 work produce carries reductant solution, and this reduction solvent penetrates into the degree of depth in flue gas, thereby has increased the mixability of reducing agent and flue gas, for guaranteeing the denitration rate, lays a good foundation.
Described spray gun 3 front ends are interior narrow outer wide horn mouth, have increased blast and wind speed, have also controlled spray angle simultaneously.
Described nozzle 2 front ends are equipped with striker 1.Liquid Surface Tension of Liquid Drops after striker 1 clashes into is destroyed, thereby atomizing effect is obviously strengthened.
Described spray gun 3 is arranged with holder 4, through hole 3c is offered in described spray gun 3 rear ends, make the gap between spray gun 3 and holder 4 be communicated with compressed air piping 3b, the a part of air quantity of blower fan 13 can enter between spray gun 3 outer walls and holder 4 inwalls, can carry out cooling to spray gun 3 and holder 4, extended the service life of spray gun 3, avoided simultaneously producing dust stratification between the inwall of the outer wall of spray gun 3 and holder 4.As preferably, described spray gun 3 rear ends are evenly equipped with 4 through hole 3c.
Described reducing agent pipeline 3a left end is connected with hydraulic hose 5, and described hydraulic hose 5 is communicated with first microcephaly 7 by snap joint 6.
Described compressed air piping 3b left end is taken over 9 by second largest microcephaly 8 and first and is connected, described first takes over 9 is connected with bellows 10 by hose clamp, described bellows 10 is by the second adapter 11 and elbow 14 connecting tees 15, and described threeway 15 is taken over 12 by blower fan and is connected with blower fan 13.
The utility model is illustrated according to embodiment, and under the prerequisite that does not break away from present principles, this device can also be made some distortion and improvement.It should be pointed out that all employings are equal to the technical scheme that the modes such as replacement or equivalent transformation obtain, and all drop in protection domain of the present utility model.
Claims (7)
1. reducing agent spray gun that is applicable to the SNCR denitration technology, it is characterized in that, comprise nozzle (2), spray gun (3) and blower fan (13), described nozzle (2) comprises the reducing agent outlet (2a) that is positioned at center and the air outlet slit (2b) that exports (2a) around reducing agent, in described spray gun (3), be provided with the reducing agent pipeline (3a) that is communicated with reducing agent outlet (2a) and the compressed air piping (3b) that is communicated with air outlet slit (2b), described compressed air piping (3b) is communicated with blower fan (13).
2. a kind of reducing agent spray gun that is applicable to the SNCR denitration technology as claimed in claim 1, is characterized in that, described spray gun (3) front end is provided with interior narrow outer wide horn mouth.
3. a kind of reducing agent spray gun that is applicable to the SNCR denitration technology as claimed in claim 1, is characterized in that, described nozzle (2) front end is equipped with striker (1).
4. a kind of reducing agent spray gun that is applicable to the SNCR denitration technology as claimed in claim 1, it is characterized in that, described spray gun (3) is arranged with holder (4), through hole (3c) is offered in described spray gun (3) rear end, makes the gap between spray gun (3) and holder (4) be communicated with compressed air piping (3b).
5. a kind of reducing agent spray gun that is applicable to the SNCR denitration technology as claimed in claim 1, it is characterized in that, described reducing agent pipeline (3a) left end is connected with hydraulic hose (5), and described hydraulic hose (5) is communicated with first microcephaly (7) by snap joint (6).
6. a kind of reducing agent spray gun that is applicable to the SNCR denitration technology as claimed in claim 1, it is characterized in that, described compressed air piping (3b) left end is taken over (9) by second largest microcephaly (8) and first and is connected, described first takes over (9) is connected with bellows (10) by hose clamp, described bellows (10) is taken over (11) and elbow (14) connecting tee (15) by second, and described threeway (15) is taken over (12) by blower fan and is connected with blower fan (13).
7. a kind of reducing agent spray gun that is applicable to the SNCR denitration technology as claimed in claim 4, is characterized in that, described spray gun (3) rear end evenly is provided with 4 through holes (3c).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202946729U CN203291990U (en) | 2013-05-27 | 2013-05-27 | Reducing agent spraying gun suitable for SNCR denitration technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202946729U CN203291990U (en) | 2013-05-27 | 2013-05-27 | Reducing agent spraying gun suitable for SNCR denitration technology |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203291990U true CN203291990U (en) | 2013-11-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013202946729U Expired - Lifetime CN203291990U (en) | 2013-05-27 | 2013-05-27 | Reducing agent spraying gun suitable for SNCR denitration technology |
Country Status (1)
| Country | Link |
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| CN (1) | CN203291990U (en) |
Cited By (1)
| 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 |
-
2013
- 2013-05-27 CN CN2013202946729U patent/CN203291990U/en not_active Expired - Lifetime
Cited By (1)
| 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 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131120 |
|
| CX01 | Expiry of patent term |