CN108014625A - SNCR denitration two-fluid voltage stabilizing spray gun - Google Patents

SNCR denitration two-fluid voltage stabilizing spray gun Download PDF

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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
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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
Application number
CN201711204378.3A
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Chinese (zh)
Inventor
刘国杰
陈俊杰
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Changzhou W & W Motor Co Ltd
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Changzhou W & W Motor Co Ltd
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Filing date
Publication date
Application filed by Changzhou W & W Motor Co Ltd filed Critical Changzhou W & W Motor Co Ltd
Priority to CN201711204378.3A priority Critical patent/CN108014625A/en
Publication of CN108014625A publication Critical patent/CN108014625A/en
Pending legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation 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
    • B01D53/34Chemical or biological purification of waste gases
    • B01D53/74General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/77Liquid phase processes
    • B01D53/79Injecting reactants
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation 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
    • B01D53/34Chemical or biological purification of waste gases
    • B01D53/46Removing components of defined structure
    • B01D53/54Nitrogen compounds
    • B01D53/56Nitrogen oxides
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/02Spray pistols; Apparatus for discharge
    • B05B7/08Spray 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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2251/00Reactants
    • B01D2251/20Reductants
    • B01D2251/206Ammonium compounds
    • B01D2251/2062Ammonia

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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 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

SNCR denitration two-fluid voltage stabilizing spray gun
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.
CN201711204378.3A 2017-11-27 2017-11-27 SNCR denitration two-fluid voltage stabilizing spray gun Pending CN108014625A (en)

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
CN108014625A true CN108014625A (en) 2018-05-11

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Family Applications (1)

Application Number Title Priority Date Filing Date
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)

* Cited by examiner, † Cited by third party
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

Patent Citations (7)

* Cited by examiner, † Cited by third party
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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Application publication date: 20180511