CN201394414Y - Injection ammonia-spray mixing mechanism of SCR reaction device - Google Patents
Injection ammonia-spray mixing mechanism of SCR reaction device Download PDFInfo
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- CN201394414Y CN201394414Y CN2009200451814U CN200920045181U CN201394414Y CN 201394414 Y CN201394414 Y CN 201394414Y CN 2009200451814 U CN2009200451814 U CN 2009200451814U CN 200920045181 U CN200920045181 U CN 200920045181U CN 201394414 Y CN201394414 Y CN 201394414Y
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- ammonia
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- nozzle
- distributing pipe
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Abstract
The utility model provides an injection ammonia-spray mixing mechanism of SCR reaction device, which comprises a feed main pipe and a plurality of distribution pipes; one ends of the distribution pipes are communicated with the feed main pipe; the distribution pipes are provided with flowmeters and adjusting valves; the lower surface of the distribution pipe is provided with a plurality of nozzles; drainage plates consisting of a plurality of static mixed vanes are correspondingly arranged below the nozzles; the nozzles are horn shape so as to reduce the spraying resistance of ammonia; moreover, the outer side surface of the nozzle is symmetrically provided with drainage holes so as to induce partial smoke gas when spraying ammonia to enhance the mixed effect between NH3 and smoke gas; injection pipes are correspondingly arranged below the nozzles; the injection pipe is a large aditus laryngis Venturi tube which forms secondary drainage. The injection ammonia-spray mixing mechanism ofSCR reaction device has a reasonable structure, reduces the dosage of nozzles and drainage plates, reduces the manufacturing cost of the device, improving the mixed effects between reducing agent andnitric oxide in the smoke gas, and lays an excellent foundation for removing the nitric oxide in the smoke gas.
Description
Technical field
The utility model relates to a kind of smoke eliminator, particularly a kind of injection spray ammonia mixed organization of SCR reaction unit.
Background technology
SCR (SCR) technology has obtained application in the seventies in 20th century on Industrial Boiler and station boiler, owing to its mature technique and higher denitration rate, become the mainstream technology of international denitrating flue gas.Its principle is in suitable temperature and have under the condition that catalyst exists, nitrogen oxide (NO by reducing agent (main use be ammonia)
X) be converted into the natural nitrogen (N that contains in the air
2) and water (H
2O).
The SCR reaction unit is provided with a cover ammonia jet mixer structure, spraying ammonia as catalyst, and make inject flue ammonia before entering SCR reaction unit body with the NO of flue gas
XReach best turbulent flow and mix, catalyst is evenly played effectiveness.Therefore, NH
3And NO
XMixability the denitration efficiency of SCR is had great influence.If NH
3And NO
XUndercompounding, and reach NO again
XThe index request of discharge capacity will cause catalyst consumption to increase or the escapement ratio of ammonia increases, and influences denitrification effect and economical operation, also can cause secondary pollution.
In the prior art, ammonia jet mixer structure is installed in the short straight inducer of SCR reaction unit, and it comprises a feed house steward and several distributing pipe, and an end and the feed house steward of distributing pipe interlink, flowmeter and control valve are housed on the distributing pipe, on the lower surface of distributing pipe, are provided with several nozzles; And below nozzle, be provided with the deflector of forming by several static mixing blades accordingly.During work, as the NH of reducing agent
3Be transported in each distributing pipe by the feed house steward, regulate NH by control valve
3Flow, NH
3By the NO in nozzle ejection and the flue gas
XMix mutually, and make NH by deflector
3With the NO in the flue gas
XFully mix.Yet, because existing nozzle is one section short and small pipe, its jeting effect is limited, ammonia mixes with flue gas apart from longer, the easy plug nozzle of dust, thereby adopt the quantity of nozzle and deflector more, this has not only taken the limited installing space of equipment, make the pressure loss of jet-mixing system bigger, system regulates complicated, NH
3With NO in the flue gas
XMixing uniformity can not get guaranteeing that and manufacturing cost is higher.
The utility model content
Technical problem to be solved in the utility model is, at the deficiencies in the prior art part, provide a kind of rational in infrastructure, effectively reduce preparation cost, be easy to control and improve the injection spray ammonia mixed organization of the SCR reaction unit of mixed effect.
The technical scheme in the invention for solving the technical problem is: comprise a feed house steward and several distributing pipe, an end and the feed house steward of distributing pipe interlink, and flowmeter and control valve are housed on the distributing pipe, are provided with several nozzles on the lower surface of distributing pipe; And below nozzle, be provided with the deflector of forming by several static mixing blades accordingly; It is characterized in that: described nozzle is tubaeform, sprays resistance to reduce ammonia; And on the lateral surface of nozzle, offer conduction hole symmetrically,, strengthen NH so that in spray ammonia, introduce partial fume
3With the flue gas mixed effect; Be provided with induction tunnel below nozzle accordingly, this induction tunnel is the Venturi tube of big aditus laryngis, makes the NH of nozzle ejection
3The differential static pressure that produces induces flue gas to enter in the pipe around the induction tunnel mouth of pipe, forms secondary drainage, produces strong turbulent flow at induction tunnel aditus laryngis place, and mixing back flue gas is sprayed at a high speed; At NH
3Under the flue gas action of thermal difference, current downflow on the air-flow has realized NH
3Mix in short-range the best with flue gas, thereby reduced the use amount of nozzle and deflector, reduced the equipment preparation cost, and hybrid system is easy to control.
The tubaeform angle of said nozzle is 8～15 °.
The beneficial effects of the utility model are: it is rational in infrastructure, reduced the consumption of nozzle and deflector, reduced the device fabrication cost, improved the mixed effect of nitrogen oxide in reducing agent and the flue gas, for the nitrogen oxide that removes in the flue gas is had laid a good foundation.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the A-A cutaway view of Fig. 1.
Among the figure: 1 is that feed house steward, 2 is that control valve, 3 is that flowmeter, 4 is that distributing pipe, 5 is that nozzle, 5-1 are that perforation, 6 is that induction tunnel, 7 is that connecting rod, 8 is a deflector.
The specific embodiment
Be described in further detail below in conjunction with accompanying drawing with to the utility model:
The utility model comprises a feed house steward 1 and several distributing pipe 4, and an end and the feed house steward 1 of distributing pipe 4 interlink, and flowmeter 3 and control valve 2 are housed on the distributing pipe 4, are provided with several nozzles 5 on the lower surface of distributing pipe 4; Described nozzle 5 is tubaeform, and this flaring angle α is 10 °; On nozzle 5 lateral surfaces, offer conduction hole 5-1 symmetrically; And nozzle below nozzle 5, be provided with induction tunnel 6 accordingly by connecting rod 7, this induction tunnel 6 is the Venturi tube of big aditus laryngis.Below induction tunnel 6 nozzles 5, be provided with the deflector of forming by several static mixing blades 8.
Claims (2)
1, the injection of SCR reaction unit spray ammonia mixed organization comprises a feed house steward and several distributing pipe, and an end and the feed house steward of distributing pipe interlink, and flowmeter and control valve are housed on the distributing pipe, are provided with several nozzles on the lower surface of distributing pipe; And below nozzle, be provided with the deflector of forming by several static mixing blades accordingly; It is characterized in that: described nozzle is tubaeform; And on the lateral surface of nozzle, offer conduction hole symmetrically; Be provided with induction tunnel below nozzle accordingly, this induction tunnel is the Venturi tube of big aditus laryngis.
2, the injection of SCR reaction unit according to claim 1 spray ammonia mixed organization, it is characterized in that: the tubaeform angle of said nozzle is 8～15 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200451814U CN201394414Y (en) | 2009-05-09 | 2009-05-09 | Injection ammonia-spray mixing mechanism of SCR reaction device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200451814U CN201394414Y (en) | 2009-05-09 | 2009-05-09 | Injection ammonia-spray mixing mechanism of SCR reaction device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201394414Y true CN201394414Y (en) | 2010-02-03 |
Family
ID=41616903
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200451814U Expired - Lifetime CN201394414Y (en) | 2009-05-09 | 2009-05-09 | Injection ammonia-spray mixing mechanism of SCR reaction device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201394414Y (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101879401A (en) * | 2009-05-09 | 2010-11-10 | 江苏中科节能环保技术有限公司 | Reducing agent injection mechanism suitable for SCR reactor |
| CN102120129A (en) * | 2010-12-17 | 2011-07-13 | 江苏中科节能环保技术有限公司 | SCR (Selective Catalytic Reduction) denitration adjustable ammonia injection mechanism |
| CN102400747A (en) * | 2010-09-11 | 2012-04-04 | 中国第一汽车集团公司 | Calibration method for dosage of urea reducing agent |
| CN102553411A (en) * | 2011-11-13 | 2012-07-11 | 哈尔滨锅炉厂有限责任公司 | Device and method for spraying ammonia gas into selective catalytic reduction denitrifying device |
| CN103007750A (en) * | 2012-12-17 | 2013-04-03 | 浙江天地环保工程有限公司 | Ammonia spraying device for flue gas denitrification |
| CN103510073A (en) * | 2013-09-28 | 2014-01-15 | 无锡荣能半导体材料有限公司 | Gas mixer |
| CN103768936A (en) * | 2012-10-24 | 2014-05-07 | 中国石油化工股份有限公司 | CO boiler-flue gas denitration reactor integrated unit |
| CN103776013A (en) * | 2012-10-24 | 2014-05-07 | 中国石油化工股份有限公司 | CO boiler with ash removing function |
| CN103776043A (en) * | 2012-10-24 | 2014-05-07 | 中国石油化工股份有限公司 | CO boiler having denitration function |
| CN103776014A (en) * | 2012-10-24 | 2014-05-07 | 中国石油化工股份有限公司 | CO boiler having ash removal function |
| CN103894082A (en) * | 2014-03-03 | 2014-07-02 | 东南大学 | Gas mixer arranged in gas channel and gas mixing device composed of gas mixer |
| CN105582808A (en) * | 2016-03-14 | 2016-05-18 | 上海蓝科石化环保科技股份有限公司 | SCR denitration device and method |
-
2009
- 2009-05-09 CN CN2009200451814U patent/CN201394414Y/en not_active Expired - Lifetime
Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101879401A (en) * | 2009-05-09 | 2010-11-10 | 江苏中科节能环保技术有限公司 | Reducing agent injection mechanism suitable for SCR reactor |
| CN101879401B (en) * | 2009-05-09 | 2013-08-14 | 江苏中科节能环保技术有限公司 | Reducing agent injection mechanism suitable for SCR reactor |
| CN102400747A (en) * | 2010-09-11 | 2012-04-04 | 中国第一汽车集团公司 | Calibration method for dosage of urea reducing agent |
| CN102400747B (en) * | 2010-09-11 | 2013-08-14 | 中国第一汽车集团公司 | Calibration method for dosage of urea reducing agent |
| CN102120129A (en) * | 2010-12-17 | 2011-07-13 | 江苏中科节能环保技术有限公司 | SCR (Selective Catalytic Reduction) denitration adjustable ammonia injection mechanism |
| CN102553411A (en) * | 2011-11-13 | 2012-07-11 | 哈尔滨锅炉厂有限责任公司 | Device and method for spraying ammonia gas into selective catalytic reduction denitrifying device |
| CN102553411B (en) * | 2011-11-13 | 2015-08-26 | 哈尔滨锅炉厂有限责任公司 | The device and method of ammonia is sprayed in selective catalytic reduction reaction denitration device |
| CN103776043A (en) * | 2012-10-24 | 2014-05-07 | 中国石油化工股份有限公司 | CO boiler having denitration function |
| CN103776013B (en) * | 2012-10-24 | 2016-03-02 | 中国石油化工股份有限公司 | There is the CO boiler of dusting function |
| CN103776013A (en) * | 2012-10-24 | 2014-05-07 | 中国石油化工股份有限公司 | CO boiler with ash removing function |
| CN103776043B (en) * | 2012-10-24 | 2016-06-22 | 中国石油化工股份有限公司 | A kind of CO boiler with denitration function |
| CN103776014A (en) * | 2012-10-24 | 2014-05-07 | 中国石油化工股份有限公司 | CO boiler having ash removal function |
| CN103768936A (en) * | 2012-10-24 | 2014-05-07 | 中国石油化工股份有限公司 | CO boiler-flue gas denitration reactor integrated unit |
| CN103768936B (en) * | 2012-10-24 | 2016-01-06 | 中国石油化工股份有限公司 | A kind of CO boiler and flue gas denitration reactor combined unit |
| CN103776014B (en) * | 2012-10-24 | 2015-11-18 | 中国石油化工股份有限公司 | A kind of CO boiler with dusting function |
| CN103007750A (en) * | 2012-12-17 | 2013-04-03 | 浙江天地环保工程有限公司 | Ammonia spraying device for flue gas denitrification |
| CN103007750B (en) * | 2012-12-17 | 2014-12-17 | 浙江天地环保工程有限公司 | Ammonia spraying device for flue gas denitrification |
| CN103510073A (en) * | 2013-09-28 | 2014-01-15 | 无锡荣能半导体材料有限公司 | Gas mixer |
| CN103894082A (en) * | 2014-03-03 | 2014-07-02 | 东南大学 | Gas mixer arranged in gas channel and gas mixing device composed of gas mixer |
| CN105582808A (en) * | 2016-03-14 | 2016-05-18 | 上海蓝科石化环保科技股份有限公司 | SCR denitration device and method |
| CN105582808B (en) * | 2016-03-14 | 2017-11-24 | 上海蓝科石化环保科技股份有限公司 | A kind of SCR denitration device and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: KEXING ENVIRONMENT ENGINEERING TECH CO., LTD., JIA Free format text: FORMER OWNER: JIANGSU ZHONGKE ENERGY SAVING ENVIRONMENTAL TECHNOLOGY CO., LTD. Effective date: 20110407 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20110407 Address after: 224003 Jiangsu province Yancheng City new economic zone Xinyang Road No. 9 Patentee after: Jiangsu Kehang Environment Engineering Technology Co., Ltd. Address before: 224003 Jiangsu province Yancheng City new economic zone Xinyang Road No. 9 Patentee before: Jiangsu Zhongke Energy Saving Environmental Technology Co., Ltd. |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20100203 Effective date of abandoning: 20090509 |
|
| RGAV | Abandon patent right to avoid regrant |