CN108014625A - SNCR denitration two-fluid voltage stabilizing spray gun - Google Patents
SNCR denitration two-fluid voltage stabilizing spray gun Download PDFInfo
- Publication number
- CN108014625A CN108014625A CN201711204378.3A CN201711204378A CN108014625A CN 108014625 A CN108014625 A CN 108014625A CN 201711204378 A CN201711204378 A CN 201711204378A CN 108014625 A CN108014625 A CN 108014625A
- Authority
- CN
- China
- Prior art keywords
- nozzle
- outer nozzle
- gas chamber
- inner nozzle
- voltage stabilizing
- Prior art date
- 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.)
- Pending
Links
- 239000007921 spray Substances 0.000 title claims abstract description 24
- 239000012530 fluid Substances 0.000 title claims abstract description 11
- 230000000087 stabilizing effect Effects 0.000 title claims abstract description 11
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 13
- 230000000694 effects Effects 0.000 abstract description 24
- 238000002347 injection Methods 0.000 abstract description 2
- 239000007924 injection Substances 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 24
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 5
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 5
- 235000011114 ammonium hydroxide Nutrition 0.000 description 5
- 238000000889 atomisation Methods 0.000 description 5
- 230000003628 erosive effect Effects 0.000 description 5
- 239000003546 flue gas Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 239000000908 ammonium hydroxide Substances 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004202 carbamide Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- B01D53/79—Injecting reactants
-
- 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
Landscapes
- 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 SNCR denitration two-fluid voltage stabilizing spray gun, including inner nozzle, outer nozzle outside inner nozzle, inner nozzle front end is equipped with inner nozzle, outer nozzle front end is equipped with the outer nozzle being located at outside inner nozzle, outer nozzle front end is equipped with the opening for coordinating inner nozzle, outer nozzle rear portion is equipped with compressed air inlet, inner nozzle rear portion is equipped with reducing agent entrance, outer nozzle is equipped with the appearance gas chamber of ball-type at outer nozzle, hold gas chamber front end outer nozzle internal diameter and be less than appearance gas chamber rear end outer nozzle internal diameter, injection pressure stability continues, atomizing effect is more preferable.
Description
Technical field
The invention belongs to SNCR denitration equipment technical field, and in particular to SNCR denitration two-fluid voltage stabilizing 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.Since the change of supply pressure can cause the effect of ammonia water spray during usual lance ejection ammonium hydroxide, cause mist
Change effect is poor, and the denitration effect of SNCR techniques declines, it is therefore desirable to which the supply pressure of spray gun is regulated and controled.
The content of the invention
The technical problems to be solved by the invention are in view of the foregoing drawbacks, there is provided SNCR denitration two-fluid voltage stabilizing spray gun, spray
Injection pressure, which is stablized, to be continued, and atomizing effect is more preferable.
It is as follows that the present invention solves the technical solution that its technical problem uses:
SNCR denitration two-fluid voltage stabilizing 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, and outer nozzle front end is equipped with the opening for coordinating inner nozzle, outside
Jet pipe rear portion is equipped with compressed air inlet, and inner nozzle rear portion is equipped with reducing agent entrance, and outer nozzle is equipped with ball-type at outer nozzle
Appearance gas chamber, hold gas chamber front end outer nozzle internal diameter and be less than and hold gas chamber rear end outer nozzle internal diameter, compressed air, reducing agent respectively into
Entering, former agent is atomized for the first time under the action of inner nozzle, meanwhile, outer nozzle sprays compressed air, and compressed air makes atomization again
Reducing agent afterwards is atomized again, is strengthened atomizing effect, when compressed air moves flow forward in outer nozzle endoporus, is flowed to appearance
Collect in gas chamber, since outer nozzle internal diameter is inconsistent before and after holding gas chamber, the internal diameter of front end is smaller, and air pressure is being held in gas chamber
Rise, sprayed after pressurization, and keep certain pressure persistently to spray, improve atomizing effect, improve denitration 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, it is taper to hold gas chamber front end outer nozzle inner wall, and the less one end of taper forward, further improves ejection
When speed, improve the effect of atomization.
The beneficial effects of the invention are as follows:Using the above scheme, compressed air, reducing agent respectively enter, and strengthen atomizing effect,
Compressed air is held in gas chamber in outer nozzle and collects supercharging, keeps certain pressure, and keeps certain pressure persistently to spray, and improves
Atomizing effect, improves denitration effect.
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 3 be appearance gas chamber.
Embodiment
Embodiment 1:SNCR denitration two-fluid voltage stabilizing spray gun as shown in Figure 1, including it is outer outside inner nozzle 1, inner nozzle 1
Jet pipe 2,1 front end of inner nozzle are equipped with inner nozzle, and 2 front end of outer nozzle is equipped with the outer nozzle being located at outside inner nozzle, before outer nozzle
End is equipped with the opening for coordinating inner nozzle, and outer nozzle, which is located at outside inner nozzle, avoids flue gas erosion from wearing, and avoids smoke-shock pair
The influence of atomizing effect, 2 rear portion of outer nozzle are equipped with compressed air inlet, and 1 rear portion of inner nozzle is equipped with reducing agent entrance, outer nozzle 1
The appearance gas chamber 3 of ball-type is equipped with outer nozzle, holds 3 front end outer nozzle internal diameter of gas chamber and is less than appearance gas chamber rear end outer nozzle internal diameter,
Compressed air, reducing agent respectively enter, and former agent is atomized for the first time under the action of inner nozzle, meanwhile, it is empty that outer nozzle sprays compression
Gas, compressed air make the reducing agent after atomization be atomized again again, strengthen atomizing effect, compressed air is in 2 endoporus of outer nozzle
When moving flow forward, flow to hold in gas chamber and collect, since outer nozzle internal diameter is inconsistent before and after holding gas chamber, the internal diameter of front end compared with
Small, air pressure rises in appearance gas chamber, is sprayed after pressurization, and keeps certain pressure persistently to spray, and improves atomizing effect,
The inner wall for holding 3 front end outer nozzle 2 of gas chamber is taper, and the less one end of taper forward, further improves speed during ejection, into one
Step improves the effect of atomization, greatly improves denitration effect, outer nozzle is overall package structure, and outer nozzle can avoid inner nozzle
Worn, prolong the service life by flue gas erosion.
Embodiment 2:With reference to the SNCR denitration two-fluid voltage stabilizing spray gun shown in Fig. 1, including outside inner nozzle 1, inner nozzle 1
Outer nozzle 2,1 front end of inner nozzle are equipped with inner nozzle, and 2 front end of outer nozzle is equipped with the outer nozzle being located at outside inner nozzle, outer nozzle
Front end is equipped with the opening for coordinating inner nozzle, and outer nozzle, which is located at outside inner nozzle, avoids flue gas erosion from wearing, and avoids smoke-shock
Influence to atomizing effect, 2 rear portion of outer nozzle are equipped with compressed air inlet, and 1 rear portion of inner nozzle is equipped with reducing agent entrance, outer nozzle
1 is equipped with the appearance gas chamber 3 of ball-type at outer nozzle, holds 3 front end outer nozzle internal diameter of gas chamber and is less than appearance gas chamber rear end outer nozzle internal diameter,
Compressed air, reducing agent respectively enter, and former agent is atomized for the first time under the action of inner nozzle, meanwhile, it is empty that outer nozzle sprays compression
Gas, compressed air make the reducing agent after atomization be atomized again again, strengthen atomizing effect, compressed air is in 2 endoporus of outer nozzle
When moving flow forward, flow to hold in gas chamber and collect, since outer nozzle internal diameter is inconsistent before and after holding gas chamber, the internal diameter of front end compared with
Small, air pressure rises in appearance gas chamber, is sprayed after pressurization, and keeps certain pressure persistently to spray, and improves atomizing effect,
Denitration effect is greatly improved, outer nozzle is overall package structure, and outer nozzle can avoid inner nozzle from being worn by flue gas erosion, prolong
Long life.
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 (3)
1.SNCR denitration two-fluid voltage stabilizing spray guns, 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, and outer nozzle front end, which is equipped with, coordinates interior spray
The opening of mouth, outer nozzle rear portion are equipped with compressed air inlet, and inner nozzle rear portion is equipped with reducing agent entrance, and outer nozzle is close to outer nozzle
Appearance gas chamber of the place equipped with ball-type, holds gas chamber front end outer nozzle internal diameter and is less than appearance gas chamber rear end outer nozzle internal diameter.
2. SNCR denitration two-fluid voltage stabilizing spray gun according to claim 1, it is characterised in that:The outer nozzle is overall
Encapsulating structure.
3. SNCR denitration two-fluid voltage stabilizing spray gun according to claim 1, it is characterised in that:Hold in the outer nozzle of gas chamber front end
Wall is taper, and the less one end of taper is forward.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201711204378.3A CN108014625A (en) | 2017-11-27 | 2017-11-27 | SNCR denitration two-fluid voltage stabilizing spray gun |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201711204378.3A CN108014625A (en) | 2017-11-27 | 2017-11-27 | SNCR denitration two-fluid voltage stabilizing spray gun |
Publications (1)
Publication Number | Publication Date |
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CN108014625A true CN108014625A (en) | 2018-05-11 |
Family
ID=62077472
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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CN201711204378.3A Pending CN108014625A (en) | 2017-11-27 | 2017-11-27 | SNCR denitration two-fluid voltage stabilizing spray gun |
Country Status (1)
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CN (1) | CN108014625A (en) |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN2293182Y (en) * | 1997-06-12 | 1998-10-07 | 防城港市海洋科技开发中心 | Jet-flow self-sucking automatic aerator |
JP2005238019A (en) * | 2004-02-24 | 2005-09-08 | Osaka Gas Co Ltd | Two fluid nozzle structure |
WO2009048452A1 (en) * | 2007-10-13 | 2009-04-16 | Neema Hekmat | Open lumen air filtration for liquid lines |
CN201445912U (en) * | 2009-08-07 | 2010-05-05 | 华南理工大学 | Combined atomizing nozzle suitable for selective non-catalytic reduction |
CN202638273U (en) * | 2012-06-11 | 2013-01-02 | 杭州浙大天元科技有限公司 | Low-gas-consumption bubble atomizing spray gun suitable for selective non-catalytic reduction (SNCR) denitration technology |
CN103418517A (en) * | 2013-08-16 | 2013-12-04 | 苏州市东立机械有限公司 | Gas mixing nozzle |
CN205528977U (en) * | 2016-04-14 | 2016-08-31 | 国家电网公司 | Corrosion resistant ground net cermet coating material's preparation facilities |
-
2017
- 2017-11-27 CN CN201711204378.3A patent/CN108014625A/en active Pending
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN2293182Y (en) * | 1997-06-12 | 1998-10-07 | 防城港市海洋科技开发中心 | Jet-flow self-sucking automatic aerator |
JP2005238019A (en) * | 2004-02-24 | 2005-09-08 | Osaka Gas Co Ltd | Two fluid nozzle structure |
WO2009048452A1 (en) * | 2007-10-13 | 2009-04-16 | Neema Hekmat | Open lumen air filtration for liquid lines |
CN201445912U (en) * | 2009-08-07 | 2010-05-05 | 华南理工大学 | Combined atomizing nozzle suitable for selective non-catalytic reduction |
CN202638273U (en) * | 2012-06-11 | 2013-01-02 | 杭州浙大天元科技有限公司 | Low-gas-consumption bubble atomizing spray gun suitable for selective non-catalytic reduction (SNCR) denitration technology |
CN103418517A (en) * | 2013-08-16 | 2013-12-04 | 苏州市东立机械有限公司 | Gas mixing nozzle |
CN205528977U (en) * | 2016-04-14 | 2016-08-31 | 国家电网公司 | Corrosion resistant ground net cermet coating material's preparation facilities |
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PB01 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
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Application publication date: 20180511 |