CN107126831A - A kind of injector for SNCR denitration system - Google Patents
A kind of injector for SNCR denitration system Download PDFInfo
- Publication number
- CN107126831A CN107126831A CN201710477485.7A CN201710477485A CN107126831A CN 107126831 A CN107126831 A CN 107126831A CN 201710477485 A CN201710477485 A CN 201710477485A CN 107126831 A CN107126831 A CN 107126831A
- Authority
- CN
- China
- Prior art keywords
- reducing agent
- channel
- air
- compressed air
- air hose
- 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.)
- Granted
Links
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
- B05B7/04—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge
- B05B7/0416—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge with arrangements for mixing one gas and one liquid
-
- 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
- B05B7/04—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge
- B05B7/0416—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge with arrangements for mixing one gas and one liquid
- B05B7/0491—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge with arrangements for mixing one gas and one liquid the liquid and the gas being mixed at least twice along the flow path of the liquid
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
- B01D2258/0283—Flue gases
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Abstract
The invention discloses a kind of injector for SNCR denitration system, it mainly includes the first air hose, reducing agent pipe and the second air hose, it is characterised in that：The reducing agent pipe sleeve is connected on first air hose, and second air hose is socketed on the reducing agent pipe；Reducing agent first passage and reducing agent second channel are formed between first air hose and the reducing agent pipe, compressed air second channel is formed between the reducing agent pipe and second air hose.The present invention increases the potential energy that reducing agent flows out, and jet atomization and secondary, three atomizations by pull of vacuum, reducing agent drop is evenly more refined, improves denitration efficiency.
Description
Technical field
The present invention relates to a kind of equipment for denitrifying flue gas technical field, more particularly to a kind of injector device.
Background technology
Nitrogen oxides is the one of the main reasons of acid rain, and harm people's is healthy.Nitrogen oxides is ceramics factory's spraying
One of emission of tower.Country and place are more and more tighter to the standard limit of smog release of each ceramics factory now, not up to standard to be forbidden out tower
Production, each ceramics factory is the production that goes into operation, and transformation and upgrade are carried out to the spray tower flue gas emission in factory.Current SNCR flue gases take off
Nitre technology, should in ceramics factory's spray tower flue gas system transformation because its system operatio is simple, small investment, facility are simple, it is few to take up an area
With extensive.The atomizing effect of spray gun is one of key technology of SNCR denitration system, and the size of atomized drop is directly affected entirely
The denitration efficiency of flue gas emission, influences the discharge value of nitrogen oxides.Existing SNCR denitration injector atomization is uneven, atomization
Effect is undesirable, influences denitration efficiency；Reducing agent hydraulic pressure is small in another gravity flow SNCR denitration device, and flowing potential energy is low, there is dropping liquid
Phenomenon, corrosion is produced to furnace wall, endangers equipment.
The content of the invention
In order to solve the above-mentioned technical problem, a kind of injector for SNCR denitration system of the invention uses following technical side
Case：A kind of injector for SNCR denitration system, including the first air hose, reducing agent pipe and the second air hose, its feature exist
In：The reducing agent pipe sleeve is connected on first air hose, and second air hose is socketed on the reducing agent pipe；It is described
The reducing agent first passage and reducing agent second channel of local insertion are formed between first air hose and the reducing agent pipe, it is described
Compressed air second channel is formed between reducing agent pipe and second air hose;First air hose includes compressed air
First entrance compressed air first passage and the first jet；Wherein, the reducing agent pipe）Front end is the second jet, described
Reducing agent tube cavity formation hybrid channel between first jet and second jet；Wherein, the compressed air
Two passages and the local insertion in the hybrid channel.
Compressed air first entrance is connected to the compressed air first passage, and the compressed air first passage is connected to
First jet；Reducing agent entrance is connected to the reducing agent first passage, and the reducing agent first passage passes through n（n≥4）It is individual
Circumferentially equally distributed inlet opening is connected with the reducing agent second channel；Compressed air is sprayed at a high speed from first jet
Go out, constantly the air suction in the reducing agent second channel is walked, the reducing agent second channel formation certain vacuum degree,
Suction is produced to reducing agent, increases the flowing potential energy of reducing agent.
The reducing agent pipe front end is the second jet, described between first jet and second jet
Reducing agent tube cavity formation hybrid channel；Compressed air sprays at a high speed from first jet, to passing through the reducing agent the
The come in reducing agent of the hybrid channel of two passages constantly hits shearing, is atomized, produces atomized drop.
More preferably, the compressed air second channel passes through m（m≥6）Individual circumferentially equally distributed cone section air admission hole connects
Lead to the hybrid channel, shock shearing is carried out to atomized drop, secondary-atomizing makes it evenly thinner.
More preferably, the angle that the cone section air admission hole is formed with the hybrid channel is 30 ° ~ 60 °, the cone section air admission hole
Compressed air can be achieved with the distance of second jet and forms primary event on the reducing agent pipe, makes atomized drop again
Shearing, three atomizations are once hit in increase.
Wherein, the cone section air admission hole（15）With second jet（8）Apart from s, cone section air admission hole（15）
With the hybrid channel（7）Form angle α, the hybrid channel（7）Diameter d meet condition be d × cot (α)<s<2 ×
d×cot(α)。
The invention has the advantages that：The present invention increases the potential energy that reducing agent flows out by pull of vacuum, and sprays
Atomization and secondary, three atomizations, make reducing agent drop evenly more refine, improve denitration efficiency；In addition, the present invention can lead to
The rate-of flow ratio of compressed air first entrance, compressed air second entrance and reducing agent entrance is overregulated, obtains suitable
Atomization condition, adjustable range is big.
Brief description of the drawings
Fig. 1 is a kind of overall structure diagram of injector for SNCR denitration system of the invention.
Figure number explanation
1st, compressed air first entrance；2nd, the first air hose；3rd, compressed air first passage；4th, inlet opening；5th, reducing agent second
Passage；6th, the first jet；7th, hybrid channel；8th, the second jet；9th, reducing agent entrance；10th, reducing agent pipe；11st, reducing agent
First passage；12nd, compressed air second entrance；13rd, the second air hose；14th, compressed air second channel；15th, section air admission hole is bored.
Embodiment
The specific works method of a kind of injector for SNCR denitration system of the invention, as shown in figure 1, its structure is main
Including the first air hose 2, the air hose 13 of reducing agent pipe 10 and second；Reducing agent pipe 10 is socketed on the first air hose 2, and second is empty
Tracheae 13 is socketed on reducing agent pipe 10；The reducing agent first of local insertion is formed between first air hose 2 and reducing agent pipe 10
Compressed air second channel 14 is formed between passage 11 and reducing agent second channel 5, the air hose 13 of reducing agent pipe 10 and second.
Wherein, the rear end of the first air hose 2（Left side in figure）The compressed air first entrance 1 of setting, compressed air first
Entrance 1 is connected to compressed air first passage 3, and compressed air first passage 3 is connected to the first jet 6；The reducing agent pipe 13
Front end（Right side in figure）It is provided with the second jet 8, the reducing agent pipe between the first jet 6 and second jet 8
Hybrid channel 7 of the chamber formation with a segment distance；The compressed air second channel 14 and the local insertion in the hybrid channel 7,
The reducing agent second channel 5 and the insertion of hybrid channel 7.
Wherein, the front end of reducing agent first passage 11 passes through n circumferentially equally distributed inlet openings 4 and the reduction
Agent second channel 5 is connected, and the rear end of reducing agent first passage 11 is connected in reducing agent entrance 9, wherein n >=4, the present embodiment
The number of inlet opening 4 is 8.
Wherein, the front end of compressed air second channel 14 is connected to compressed air second entrance 12, compressed air second
Passage 14 connects the hybrid channel 7 by the individual circumferentially equally distributed cone section air admission holes 15 of m, wherein, section air inlet is bored in m >=6
Hole 15 is arranged on the wall of reducing agent first passage 11.The number that section air admission hole 15 is bored in the present embodiment is 8.The cone section air inlet
Hole 15 forms angle with the hybrid channel 7, and angle is 30 ° ~ 60 ° of α, and angle α is 45 ° in the present embodiment.
The cone section air admission hole 15 is with second jet 8 apart from s, and the cone section air admission hole 15 mixes logical with described
The formation of road 7 angle α, the condition that the diameter d of the hybrid channel 7 is met is d × cot (α)<s<2 ×d×cot(α).This example
The distance of a diameter of 13mm of middle hybrid channel 7, cone section air admission hole 15 and the second jet 9 takes 20mm（13×cot（45°）<s<
2×13× cot（45°））, compressed air can be made to form reflection on reducing agent pipe 10.
Specifically workflow is：Compressed air is entered by compressed air first entrance 1, flows through compressed air first passage
3, sprayed at a high speed in the first jet 6；Reducing agent is entered by reducing agent entrance 9, is flowed through reducing agent first passage 11, is passed through feed liquor
Hole 4 enters reducing agent second channel 5；Compressed air constantly sprays at a high speed in the first jet 6, in reducing agent second channel 5
Air suction walk, formed certain vacuum degree, to reducing agent rise suction, reducing agent flowing potential energy increase, in hybrid channel 7
Shearing is constantly hit with compressed air, atomized drop is produced, is sprayed at a high speed in the second jet 8；Compressed air is by compressed air
Second entrance 12 enters, and flows through compressed air second channel 14, by boring section air admission hole 15 to the atomized liquid in hybrid channel 7
Drop carries out shock shearing, and secondary-atomizing, compressed air carries out shock to atomized drop by reflection on reducing agent pipe 10 and cut again
Cut, three atomizations make the drop ejected from the second jet evenly thinner.
Claims (6)
1. a kind of injector for SNCR denitration system, it is characterised in that：Including the first air hose（2）, reducing agent pipe（10）
And second air hose（13）, the reducing agent pipe（13）It is socketed in first air hose（2）On, second air hose（13）
It is socketed in the reducing agent pipe（10）On；First air hose（2）With the reducing agent pipe（10）Between form local insertion
Reducing agent first passage（11）With reducing agent second channel（5）, the reducing agent pipe（13）With second air hose（10）
Between formed compressed air second channel（14）;Wherein described first air hose（2）Including compressed air first entrance（1）, pressure
Contracting air first passage（3）With the first jet（6）；Wherein, the reducing agent pipe（13）Front end is the second jet（8）, institute
State the first jet（6）With second jet（8）Between reducing agent tube cavity formation hybrid channel（7）；Wherein, it is described
Compressed air second channel（14）With the hybrid channel（7）Local insertion.
2. a kind of injector for SNCR denitration system according to claim 1, it is characterised in that：The reducing agent
One passage（11）Front end passes through n circumferentially equally distributed inlet openings（4）With the reducing agent second channel（5）Connection, institute
State reducing agent first passage（11）It is connected to reducing agent entrance（9）, n >=4.
3. a kind of injector for SNCR denitration system according to claim 1, it is characterised in that：The compressed air
Second channel（14）Pass through the individual circumferentially equally distributed cone section air admission holes of m（15）Connect the hybrid channel（7）, m >=6.
4. a kind of injector for SNCR denitration system according to claim 3, it is characterised in that：The cone section air inlet
Hole（15）With the hybrid channel（7）Angle α is formed, angle α is 30 ° ~ 60 °.
5. a kind of injector for SNCR denitration system according to claim 3, it is characterised in that：The compressed air
Second channel（14）With compressed air second entrance（12）Connection.
6. a kind of injector for SNCR denitration system according to any claim in claim 3 to 5, its feature
It is：The cone section air admission hole（15）With second jet（8）Apart from s, cone section air admission hole（15）Mixed with described
Close passage（7）Form angle α, the hybrid channel（7）Diameter d meet condition be d × cot (α)<s<2 ×d×cot
(α)。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710477485.7A CN107126831B (en) | 2017-06-20 | 2017-06-20 | Injector for SNCR denitration system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710477485.7A CN107126831B (en) | 2017-06-20 | 2017-06-20 | Injector for SNCR denitration system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107126831A true CN107126831A (en) | 2017-09-05 |
| CN107126831B CN107126831B (en) | 2023-04-21 |
Family
ID=59735632
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710477485.7A Active CN107126831B (en) | 2017-06-20 | 2017-06-20 | Injector for SNCR denitration system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107126831B (en) |
Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0845300A2 (en) * | 1996-11-27 | 1998-06-03 | Powdering Japan K.K. | Liquid atomizing nozzle |
| US6116516A (en) * | 1996-05-13 | 2000-09-12 | Universidad De Sevilla | Stabilized capillary microjet and devices and methods for producing same |
| JP2004216320A (en) * | 2003-01-16 | 2004-08-05 | Kyoritsu Gokin Co Ltd | Spray nozzle |
| CN2906341Y (en) * | 2005-12-07 | 2007-05-30 | 张彦西 | Fuel-injection nozzle for fuel oil type cremation machine and fuel oil type blast gun using same |
| CN202683061U (en) * | 2012-07-20 | 2013-01-23 | 湖南安普诺环保科技有限公司 | Automatic SNCR (Selective Non Catalytic Reduction) denitration anti-blocking jet atomization spraying gun device for smoke dust environment |
| CN103174546A (en) * | 2012-03-29 | 2013-06-26 | 摩尔动力(北京)技术股份有限公司 | Working medium internal combustion heater |
| CN203043831U (en) * | 2012-11-30 | 2013-07-10 | 北京北科欧远科技有限公司 | Reducing agent injection device used for SNCR (Selective Non-Catalytic Reduction) denitration |
| CN203737460U (en) * | 2014-01-03 | 2014-07-30 | 东莞市长原喷雾技术有限公司 | Large-flow vane type sprayer for denitration spraying gun |
| CN203842732U (en) * | 2014-04-02 | 2014-09-24 | 陆奇志 | Liquid atomizing nozzle |
| CN104888990A (en) * | 2015-05-08 | 2015-09-09 | 中国环境科学研究院 | Double-fluid atomization spray gun |
| CN205020282U (en) * | 2015-08-27 | 2016-02-10 | 山东碧空环保科技股份有限公司 | Stifled spray gun is prevented in denitration |
| CN106010630A (en) * | 2016-06-27 | 2016-10-12 | 石宝珍 | Feed atomizing nozzle for catalytic cracking |
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| CN207187486U (en) * | 2017-09-11 | 2018-04-06 | 苏州中材建设有限公司 | Reducing agent sprayer unit for denitrating flue gas |
-
2017
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6116516A (en) * | 1996-05-13 | 2000-09-12 | Universidad De Sevilla | Stabilized capillary microjet and devices and methods for producing same |
| EP0845300A2 (en) * | 1996-11-27 | 1998-06-03 | Powdering Japan K.K. | Liquid atomizing nozzle |
| JP2004216320A (en) * | 2003-01-16 | 2004-08-05 | Kyoritsu Gokin Co Ltd | Spray nozzle |
| CN2906341Y (en) * | 2005-12-07 | 2007-05-30 | 张彦西 | Fuel-injection nozzle for fuel oil type cremation machine and fuel oil type blast gun using same |
| CN103174546A (en) * | 2012-03-29 | 2013-06-26 | 摩尔动力(北京)技术股份有限公司 | Working medium internal combustion heater |
| CN202683061U (en) * | 2012-07-20 | 2013-01-23 | 湖南安普诺环保科技有限公司 | Automatic SNCR (Selective Non Catalytic Reduction) denitration anti-blocking jet atomization spraying gun device for smoke dust environment |
| CN203043831U (en) * | 2012-11-30 | 2013-07-10 | 北京北科欧远科技有限公司 | Reducing agent injection device used for SNCR (Selective Non-Catalytic Reduction) denitration |
| CN203737460U (en) * | 2014-01-03 | 2014-07-30 | 东莞市长原喷雾技术有限公司 | Large-flow vane type sprayer for denitration spraying gun |
| CN203842732U (en) * | 2014-04-02 | 2014-09-24 | 陆奇志 | Liquid atomizing nozzle |
| CN104888990A (en) * | 2015-05-08 | 2015-09-09 | 中国环境科学研究院 | Double-fluid atomization spray gun |
| CN205020282U (en) * | 2015-08-27 | 2016-02-10 | 山东碧空环保科技股份有限公司 | Stifled spray gun is prevented in denitration |
| CN106010630A (en) * | 2016-06-27 | 2016-10-12 | 石宝珍 | Feed atomizing nozzle for catalytic cracking |
| CN206810049U (en) * | 2017-06-20 | 2017-12-29 | 佛山市三水新明珠建陶工业有限公司 | A kind of injector for SNCR denitration system |
| CN207187486U (en) * | 2017-09-11 | 2018-04-06 | 苏州中材建设有限公司 | Reducing agent sprayer unit for denitrating flue gas |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN107126831B (en) | 2023-04-21 |
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Effective date of registration: 20200526 Address after: 528131 Guangdong city of Foshan province Baini town Sanshui District Central Industrial Development Zone Applicant after: FOSHAN SANSHUI NEW PEARL CONSTRUCTION CERAMICS INDUSTRIAL Co.,Ltd. Applicant after: GUANGDONG NEWPEARL CERAMIC GROUP Co.,Ltd. Address before: 528061 Guangdong city of Foshan province Baini town Sanshui District Central Industrial Development Zone Applicant before: FOSHAN SANSHUI NEW PEARL CONSTRUCTION CERAMICS INDUSTRIAL Co.,Ltd. Applicant before: GUANGDONG GELAISI CERAMICS Co.,Ltd. Applicant before: GUANGDONG NEWPEARL CERAMIC GROUP Co.,Ltd. |
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Address after: 528131 Central Industrial Development Zone, Baini Town, Sanshui District, Foshan City, Guangdong Province Applicant after: FOSHAN SANSHUI NEW PEARL CONSTRUCTION CERAMICS INDUSTRIAL Co.,Ltd. Applicant after: New Pearl Group Co.,Ltd. Address before: 528131 Central Industrial Development Zone, Baini Town, Sanshui District, Foshan City, Guangdong Province Applicant before: FOSHAN SANSHUI NEW PEARL CONSTRUCTION CERAMICS INDUSTRIAL Co.,Ltd. Applicant before: GUANGDONG NEWPEARL CERAMIC GROUP Co.,Ltd. |
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