CN103212285B - A kind of Denitration urea injector - Google Patents
A kind of Denitration urea injector Download PDFInfo
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- CN103212285B CN103212285B CN201310166143.5A CN201310166143A CN103212285B CN 103212285 B CN103212285 B CN 103212285B CN 201310166143 A CN201310166143 A CN 201310166143A CN 103212285 B CN103212285 B CN 103212285B
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- inlet pipeline
- sheath body
- injector
- cooling water
- jet element
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Abstract
The invention discloses a kind of Denitration urea injector, belong to gas denitrifying technology field, it comprises jet element and the urea liquid inlet pipeline that is connected with jet element and compressed air inlet pipeline, described jet element, urea liquid inlet pipeline and compressed air inlet pipeline external seal have sheath body, described sheath body offers cooling water inlet and coolant outlet, cooling water from cooling water inlet enter in sheath body, injector is cooled after discharge from coolant outlet.Above-mentioned Denitration urea injector atomizing effect is good, easy to adjust, can longtime running in high-temperature severe environment, regularly automatically can clean spray storehouse inner, install, maintenance is convenient.
Description
Technical field
The invention belongs to gas denitrifying technology field, particularly relate to a kind of Denitration urea injector being adapted at high temperature long-term work.
Background technology
At present, Denitration urea injector generally adopts gas-liquid mixed aerosol type, nozzle works for a long time under high-temperature severe environment, very easily cause spray nozzle clogging and oxidation, particularly breaking suddenly under liquid, condition of dying, nozzle is easy to damage, and causes and changes nozzle frequently, directly has influence on furnace pressure fluctuation and denitration effect.
Summary of the invention
The object of the present invention is to provide a kind of Denitration urea injector, its have can for a long time at high operating temperatures stable and install, the feature of easy to clean, to solve Denitration urea injector Problems existing in prior art.
For reaching this object, the present invention by the following technical solutions:
A kind of Denitration urea injector, it comprises jet element and the urea liquid inlet pipeline that is connected with jet element and compressed air inlet pipeline, wherein, described jet element, urea liquid inlet pipeline and compressed air inlet pipeline external seal have sheath body, described sheath body offers cooling water inlet and coolant outlet, cooling water from cooling water inlet enter in sheath body, injector is cooled after discharge from coolant outlet.
Especially, the outer wall of described sheath body is provided with adpting flange.
Especially, described urea liquid inlet pipeline offers bypass purge mouth, jet pipe can be made regularly with the inwall of clean running water cleaning urea pipeline and nozzle, nozzle never blocks.
Beneficial effect of the present invention is, compared with prior art described Denitration urea injector has the following advantages:
1) having set up water cooling function, enable injector stable at high operating temperatures for a long time, not easily there is blocking and oxidation in nozzle.
2) have and exempt from disassembly, cleaning function, by bypass purge mouth, jet pipe can be made regularly with the inwall of clean running water cleaning urea pipeline and nozzle, nozzle never blocks.
3) urea injector is installed, is overhauled conveniently, and the connected flange bolt of main element connects.
Accompanying drawing explanation
Fig. 1 is the structural representation of the Denitration urea injector that the specific embodiment of the invention 1 provides;
Fig. 2 is the use installation diagram of the Denitration urea injector that the specific embodiment of the invention 1 provides.
Detailed description of the invention
Technical scheme of the present invention is further illustrated by detailed description of the invention below in conjunction with accompanying drawing.
Refer to shown in Fig. 1 and Fig. 2, in the present embodiment, a kind of Denitration urea injector comprises jet element 1, urea liquid inlet pipeline 2 and compressed air inlet pipeline 3, described urea liquid inlet pipeline 2 is all connected with jet element 1 with one end of compressed air inlet pipeline 3, described jet element 1, urea liquid inlet pipeline 2 and compressed air inlet pipeline 3 external seal have sheath body 4, described urea liquid inlet pipeline 2 stretches out outside sheath body 4 with compressed air inlet pipeline 3 relative to the other end being connected jet element 1, described sheath body 4 offers cooling water inlet 5 and coolant outlet 6, cooling water from cooling water inlet 5 enter in sheath body 4, injector is cooled after discharge from coolant outlet 6, and the outer wall of described sheath body 4 is provided with adpting flange 7.Described urea liquid inlet pipeline 2 offers bypass purge mouth 8.
During work, urea liquid is entered the annular spray storehouse of jet element 1 through spraying interior pipe by urea liquid inlet pipeline 2; The annular spray storehouse that compressed air enters jet element 1 by compressed air inlet pipeline 3 through injection outer tube mixes with urea liquid, is outwards sprayed by air-water mixture, form uniform vaporific liquefied ammonia by fluid pressure and air pressure.Rinse water enters jet element 1 by bypass purge mouth 8 through spraying interior pipe, can make jet pipe, nozzle never blocks regularly with the inwall of clean running water cleaning urea pipeline and nozzle.
Cooling water enters in sheath body 4 through cooling water inlet 5, and by high-temperature flue gas after the heat transfer of sheath body 4 outer wall, flowed out by coolant outlet 6, its refrigerating function effectively protects injector and do not corroded by high-temperature flue gas, and course of injection is fully protected.
The adpting flange 7 of urea injector is connected to high temperature smoke pipe 9(or burner hearth shell wall) on, the connected flange bolt of urea injector main element connects, and achieves detachable, the replaceability of urea injector.Urea liquid is injected in high temperature smoke pipe 9(or burner hearth shell wall through urea injector continuous uniform) in, with the NO in high-temperature flue gas
xcarry out reduction reaction, generate N
2and H
2o.
Above embodiment has just set forth general principle of the present invention and characteristic; the present invention does not limit by above-mentioned example; without departing from the spirit and scope of the present invention, the present invention also has various change and change, and these changes and change all fall in the claimed scope of the invention.Application claims protection domain is defined by appending claims and equivalent thereof.
Claims (2)
1. a Denitration urea injector, it comprises jet element and the urea liquid inlet pipeline that is connected with jet element and compressed air inlet pipeline, it is characterized in that, described jet element, urea liquid inlet pipeline and compressed air inlet pipeline external seal have sheath body, described sheath body offers cooling water inlet and coolant outlet, cooling water from cooling water inlet enter in sheath body, injector is cooled after discharge from coolant outlet, described urea liquid inlet pipeline offers bypass purge mouth, rinse water enters jet element by bypass purge mouth through spraying interior pipe.
2. Denitration urea injector according to claim 1, is characterized in that, the outer wall of described sheath body is provided with adpting flange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310166143.5A CN103212285B (en) | 2013-05-07 | 2013-05-07 | A kind of Denitration urea injector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310166143.5A CN103212285B (en) | 2013-05-07 | 2013-05-07 | A kind of Denitration urea injector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103212285A CN103212285A (en) | 2013-07-24 |
| CN103212285B true CN103212285B (en) | 2015-12-23 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310166143.5A Expired - Fee Related CN103212285B (en) | 2013-05-07 | 2013-05-07 | A kind of Denitration urea injector |
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| CN (1) | CN103212285B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103759260B (en) * | 2014-01-07 | 2015-11-25 | 孙升科 | A kind of atomizing lance |
| CN104001634B (en) * | 2014-05-23 | 2016-06-22 | 姜建勇 | Spray gun for desulphurization denitration |
| CN104912632A (en) * | 2015-05-08 | 2015-09-16 | 北京大学包头创新研究院 | Diesel engine selective catalytic reduction system nozzle |
| CN108889480B (en) * | 2018-09-13 | 2023-10-17 | 浙江大学 | Soluble particulate matter spraying device and cleaning method |
| CN109395563B (en) * | 2018-12-12 | 2023-08-29 | 中国华能集团清洁能源技术研究院有限公司 | Efficient liquid atomization spraying device and method |
| CN111473681B (en) * | 2019-10-30 | 2022-05-10 | 国家电投集团黄河上游水电开发有限责任公司 | Cooling water atomization device of powerful cooling machine |
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|---|---|---|---|---|
| WO1998050165A1 (en) * | 1997-05-01 | 1998-11-12 | E.I. Du Pont De Nemours And Company | Spray nozzle and a process using this nozzle |
| CN2688395Y (en) * | 2004-01-21 | 2005-03-30 | 中国石化集团兰州设计院 | Gas-liquid mixed phase gasifying nozzles |
| CN101518766A (en) * | 2008-10-16 | 2009-09-02 | 阿尔博耐尔有限公司 | Dual-medium nozzle |
| CN102671518A (en) * | 2012-05-25 | 2012-09-19 | 中国华能集团清洁能源技术研究院有限公司 | Water-cooled air atomizing spray gun suitable for denitration adopting SNCR method |
| CN102764571A (en) * | 2012-01-12 | 2012-11-07 | 上海泰欣环保设备成套有限公司 | SCNR (Selective catalytic NOx Reduction) denitration system for boiler |
| CN203355594U (en) * | 2013-05-07 | 2013-12-25 | 苏圣科技（无锡）有限公司 | Denitration urea ejector |
-
2013
- 2013-05-07 CN CN201310166143.5A patent/CN103212285B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998050165A1 (en) * | 1997-05-01 | 1998-11-12 | E.I. Du Pont De Nemours And Company | Spray nozzle and a process using this nozzle |
| CN2688395Y (en) * | 2004-01-21 | 2005-03-30 | 中国石化集团兰州设计院 | Gas-liquid mixed phase gasifying nozzles |
| CN101518766A (en) * | 2008-10-16 | 2009-09-02 | 阿尔博耐尔有限公司 | Dual-medium nozzle |
| CN102764571A (en) * | 2012-01-12 | 2012-11-07 | 上海泰欣环保设备成套有限公司 | SCNR (Selective catalytic NOx Reduction) denitration system for boiler |
| CN102671518A (en) * | 2012-05-25 | 2012-09-19 | 中国华能集团清洁能源技术研究院有限公司 | Water-cooled air atomizing spray gun suitable for denitration adopting SNCR method |
| CN203355594U (en) * | 2013-05-07 | 2013-12-25 | 苏圣科技（无锡）有限公司 | Denitration urea ejector |
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| Publication number | Publication date |
|---|---|
| CN103212285A (en) | 2013-07-24 |
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Granted publication date: 20151223 Termination date: 20200507 |