CN107983129A - A kind of SNCR denitration high temperature resistant spray gun - Google Patents
A kind of SNCR denitration high temperature resistant spray gun Download PDFInfo
- Publication number
- CN107983129A CN107983129A CN201711204320.9A CN201711204320A CN107983129A CN 107983129 A CN107983129 A CN 107983129A CN 201711204320 A CN201711204320 A CN 201711204320A CN 107983129 A CN107983129 A CN 107983129A
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- China
- Prior art keywords
- spray gun
- nozzle
- high temperature
- inner nozzle
- temperature resistant
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/77—Liquid phase processes
- B01D53/78—Liquid phase processes with gas-liquid contact
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/54—Nitrogen compounds
- B01D53/56—Nitrogen oxides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
- B05B7/02—Spray pistols; Apparatus for discharge
- B05B7/08—Spray pistols; Apparatus for discharge with separate outlet orifices, e.g. to form parallel jets, i.e. the axis of the jets being parallel, to form intersecting jets, i.e. the axis of the jets converging but not necessarily intersecting at a point
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/20—Reductants
- B01D2251/206—Ammonium compounds
- B01D2251/2062—Ammonia
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/20—Reductants
- B01D2251/206—Ammonium compounds
- B01D2251/2067—Urea
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention belongs to SNCR denitration equipment technical field, more particularly to a kind of SNCR denitration high temperature resistant spray gun, including the outer nozzle outside inner nozzle, inner nozzle, inner nozzle front end is equipped with inner nozzle, and outer nozzle front end is equipped with the outer nozzle being located at outside inner nozzle, spiral helicine cooling duct is equipped with inner nozzle tube body, outer nozzle outer surface is equipped with thermal insulation layer, spray gun can be cooled down in time, more resistant to high temperature, extend service life.
Description
Technical field
The invention belongs to SNCR denitration equipment technical field, and in particular to a kind of SNCR denitration high temperature resistant spray gun.
Background technology
SNCR techniques are the most widely used technologies of denitration, mostly using ammonium hydroxide or using urea by becoming after dissolving
Ammonium hydroxide is evenly distributed in flue, in high temperature environments quickly by solution as reducing agent within the temperature range of 900 DEG C or so
Chemical reaction is completed, NOx is decomposed into generation nitrogen and water.Denitration efficiency can reach 50~75%, and some is even as high as 80%.
It is to generally acknowledge method of denitration the most successful in the world at present.
The atomizing effect of spray gun is one of core technology of SNCR techniques, to obtain preferable denitration effect, it is necessary to ammonia
Water is evenly distributed in flue at a suitable temperature, at suitable position, and the atomizing effect of spray gun is better, is more readily available
High denitration efficiency, for the temperature of denitration between 850 DEG C~1150 DEG C, the position of perforate is in furnace outlet cyclone cylinder import
Place, the position temperature at this can reach the temperature of denitration reaction, and spray gun is under high temperature for a long time can cause spray gun temperature
It is excessive, accelerate gun body aging, seriously affect the service life of spray gun, and the use atomizing effect of spray gun is influenced, cause SNCR
The denitration effect of technique declines.
The content of the invention
The technical problems to be solved by the invention are in view of the foregoing drawbacks, there is provided a kind of SNCR denitration high temperature resistant spray gun, spray
Rifle can be cooled down in time, more resistant to high temperature, extend service life.
It is as follows that the present invention solves the technical solution that its technical problem uses：
A kind of SNCR denitration high temperature resistant spray gun, including the outer nozzle outside inner nozzle, inner nozzle, inner nozzle front end are equipped with interior
Nozzle, outer nozzle front end are equipped with the outer nozzle being located at outside inner nozzle, are equipped with spiral helicine cooling duct in inner nozzle tube body, outside
Jet pipe outer surface is equipped with thermal insulation layer, and the coolant in cooling duct can effectively reduce the temperature of jet pipe, atomization when ensureing to use
Effect, thermal insulation layer can slow down erosion of the high temperature to spray gun, extend the service life of spray gun, while outer nozzle is located at inner nozzle
Outer protection inner nozzle, ensure that atomizing effect.
Further, the outer nozzle is overall package structure, and outer nozzle can avoid inner nozzle from being ground by flue gas erosion
Damage, prolongs the service life.
Further, the outer nozzle front end is equipped with the opening for coordinating inner nozzle, ensures atomizing effect.
Further, the outer nozzle rear portion is equipped with compressed air inlet, and the inner nozzle rear portion is equipped with reducing agent
Entrance, compressed air, reducing agent respectively enter, it is possible to increase atomizing effect.
Further, cooling duct follows mechanism with the coolant that outside is set and is connected, and ensures the without interruption of coolant.
Further, the coolant is cooling water.
Further, the coolant is cooling oil.
Further, the insulation thickness is 0.5-0.8mm, and thermal insulation layer is insulating layer of asbestos.
The beneficial effects of the invention are as follows：Using the above scheme, cooling duct endlessly provides temperature low coolant, drop
The temperature of low spray gun, delays gun body aging, extends the service life of spray gun, and insulating layer of asbestos has excellent heat-proof quality,
Erosion of the high temperature to spray chamber is greatly slow down, further extends the service life of spray gun, outer nozzle protection inner nozzle, ensure that
Atomizing effect during use.
Brief description of the drawings
By detailed description below in conjunction with the accompanying drawings, the present invention is foregoing will to be become with other objects, features and advantages
Obviously.
Fig. 1 is the cross section structure schematic diagram of the present invention.
Wherein：1 is inner nozzle, and 2 be outer nozzle, and 2.1 be thermal insulation layer, and 3 be cooling duct.
Embodiment
Embodiment 1：A kind of SNCR denitration high temperature resistant spray gun as shown in Figure 1, including it is outer outside inner nozzle 1, inner nozzle 1
Jet pipe 2, outer nozzle 2 are overall package structure, avoid inner nozzle 1 from being worn by flue gas erosion, prolong the service life, inner nozzle 1
Front end is equipped with inner nozzle, and 2 front end of outer nozzle is equipped with the outer nozzle being located at outside inner nozzle, and outer nozzle is located at outside inner nozzle
Avoid flue gas erosion from wearing, avoid influence of the smoke-shock to atomizing effect, spiral helicine cooling duct is equipped with 1 tube body of inner nozzle
3, fill in cooling duct 3 and put cooling water, cooling duct 3 connects the coolant cycling mechanism of exterior setting, endlessly provides temperature
Low cooling water, cooling water can effectively reduce the temperature of jet pipe, atomizing effect when ensureing to use, and extend spray gun uses the longevity
Life, the outer layer of outer nozzle 2 are equipped with the insulating layer of asbestos of 0.5mm thickness, and asbestos have excellent heat-proof quality, slow down high temperature significantly
Erosion, further extend the service life of spray gun, the rear portion of outer nozzle 2 is equipped with compressed air inlet, and the rear portion of inner nozzle 1 is set
There is reducing agent entrance, compressed air, reducing agent respectively enter, reducing agent primary atomization under the action of inner nozzle, primary atomization
When outer nozzle spray compressed air, compressed air makes reducing agent be atomized again again, strengthens atomizing effect, improves denitration effect
Fruit.
Embodiment 2：A kind of SNCR denitration high temperature resistant spray gun as shown in Figure 1, including it is outer outside inner nozzle 1, inner nozzle 1
Jet pipe 2, outer nozzle 2 are overall package structure, avoid inner nozzle 1 from being worn by flue gas erosion, prolong the service life, inner nozzle 1
Front end is equipped with inner nozzle, and 2 front end of outer nozzle is equipped with the outer nozzle being located at outside inner nozzle, and outer nozzle is located at outside inner nozzle
Avoid flue gas erosion from wearing, avoid influence of the smoke-shock to atomizing effect, spiral helicine cooling duct is equipped with 1 tube body of inner nozzle
3, fill in cooling duct 3 and put cooling oil, cooling duct 3 connects the coolant cycling mechanism of exterior setting, endlessly provides temperature
Low cooling oil, cooling oil can effectively reduce the temperature of jet pipe, atomizing effect when ensureing to use, and extend spray gun uses the longevity
Life, the outer layer of outer nozzle 2 are equipped with the insulating layer of asbestos of 0.8mm thickness, and asbestos have excellent heat-proof quality, slow down high temperature significantly
Erosion, further extend the service life of spray gun, the rear portion of outer nozzle 2 is equipped with compressed air inlet, and the rear portion of inner nozzle 1 is set
There is reducing agent entrance, compressed air, reducing agent respectively enter, reducing agent primary atomization under the action of inner nozzle, primary atomization
When outer nozzle spray compressed air, compressed air makes reducing agent be atomized again again, strengthens atomizing effect, improves denitration effect
Fruit.
The above, is only presently preferred embodiments of the present invention, not does limitation in any form to the present invention, it is every according to
Any simply modification, the equivalent variations made in technical spirit according to the present invention to above example, each fall within the guarantor of the present invention
Within the scope of shield.
Claims (8)
- A kind of 1. SNCR denitration high temperature resistant spray gun, it is characterised in that：Including the outer nozzle outside inner nozzle, inner nozzle, inner nozzle Front end is equipped with inner nozzle, and outer nozzle front end is equipped with the outer nozzle being located at outside inner nozzle, helical form is equipped with inner nozzle tube body Cooling duct, outer nozzle outer surface is equipped with thermal insulation layer.
- A kind of 2. SNCR denitration high temperature resistant spray gun according to claim 1, it is characterised in that：The outer nozzle is overall Encapsulating structure.
- A kind of 3. SNCR denitration high temperature resistant spray gun according to claim 1, it is characterised in that：The outer nozzle front end is set There is the opening for coordinating inner nozzle.
- A kind of 4. SNCR denitration high temperature resistant spray gun according to claim 1, it is characterised in that：The outer nozzle rear portion is set There is compressed air inlet, the inner nozzle rear portion is equipped with reducing agent entrance.
- A kind of 5. SNCR denitration high temperature resistant spray gun according to claim 1, it is characterised in that：Cooling duct and exterior setting Coolant follows mechanism connection.
- A kind of 6. SNCR denitration high temperature resistant spray gun according to claim 5, it is characterised in that：The coolant is cooling Water.
- A kind of 7. SNCR denitration high temperature resistant spray gun according to claim 5, it is characterised in that：The coolant is cooling Oil.
- A kind of 8. SNCR denitration high temperature resistant spray gun according to claim 1, it is characterised in that：The insulation thickness is 0.5-0.8mm, thermal insulation layer are insulating layer of asbestos.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711204320.9A CN107983129A (en) | 2017-11-27 | 2017-11-27 | A kind of SNCR denitration high temperature resistant spray gun |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711204320.9A CN107983129A (en) | 2017-11-27 | 2017-11-27 | A kind of SNCR denitration high temperature resistant spray gun |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107983129A true CN107983129A (en) | 2018-05-04 |
Family
ID=62032363
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711204320.9A Pending CN107983129A (en) | 2017-11-27 | 2017-11-27 | A kind of SNCR denitration high temperature resistant spray gun |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107983129A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108392960A (en) * | 2018-05-11 | 2018-08-14 | 光大环保技术研究院（南京）有限公司 | SNCR spray gun devices and garbage combustion device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102160964A (en) * | 2011-02-18 | 2011-08-24 | 中国航天科技集团公司第六研究院第十一研究所 | Selective non-catalytic reduction (SNCR) denitration multi-nozzle long-gun injector |
| CN102688681A (en) * | 2012-05-25 | 2012-09-26 | 中国华能集团清洁能源技术研究院有限公司 | Air cooling type air atomization spray gun applicable to denitration by SNCR (selective non-catalytic reduction) method |
| CN103170231A (en) * | 2013-04-10 | 2013-06-26 | 南京西普水泥工程集团有限公司 | Spray gun specially for selective non-catalytic reduction (SNCR) denitration process |
| CN103657385A (en) * | 2012-09-10 | 2014-03-26 | 杨建华 | Double-atomization spray gun for SNCR (selective non-catalytic reduction) denitration system |
-
2017
- 2017-11-27 CN CN201711204320.9A patent/CN107983129A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102160964A (en) * | 2011-02-18 | 2011-08-24 | 中国航天科技集团公司第六研究院第十一研究所 | Selective non-catalytic reduction (SNCR) denitration multi-nozzle long-gun injector |
| CN102688681A (en) * | 2012-05-25 | 2012-09-26 | 中国华能集团清洁能源技术研究院有限公司 | Air cooling type air atomization spray gun applicable to denitration by SNCR (selective non-catalytic reduction) method |
| CN103657385A (en) * | 2012-09-10 | 2014-03-26 | 杨建华 | Double-atomization spray gun for SNCR (selective non-catalytic reduction) denitration system |
| CN103170231A (en) * | 2013-04-10 | 2013-06-26 | 南京西普水泥工程集团有限公司 | Spray gun specially for selective non-catalytic reduction (SNCR) denitration process |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108392960A (en) * | 2018-05-11 | 2018-08-14 | 光大环保技术研究院（南京）有限公司 | SNCR spray gun devices and garbage combustion device |
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Application publication date: 20180504 |
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