CN202811020U - Urea jetting device of high-power diesel engine tail gas denitration selective catalytic reduction (SCR) system for ship - Google Patents
Urea jetting device of high-power diesel engine tail gas denitration selective catalytic reduction (SCR) system for ship Download PDFInfo
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- CN202811020U CN202811020U CN2012205136165U CN201220513616U CN202811020U CN 202811020 U CN202811020 U CN 202811020U CN 2012205136165 U CN2012205136165 U CN 2012205136165U CN 201220513616 U CN201220513616 U CN 201220513616U CN 202811020 U CN202811020 U CN 202811020U
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- nozzle
- urea
- tail gas
- diesel engine
- nozzle seat
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- 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
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Abstract
The utility model relates to a urea jetting device of a high-power diesel engine tail gas denitration selective catalytic reduction (SCR) system for a ship. The urea jetting device comprises a first nozzle seat, a second nozzle seat, a third nozzle seat, a fourth nozzle seat, nozzles and an air inlet jetting pipe section. Four holes are formed in the air inlet jetting pipe section, and the first nozzle seat, the second nozzle seat, the third nozzle seat and the fourth nozzle seat are respectively welded with the four holes in a corresponding mode. Four nozzles are respectively connected with the first nozzle seat, the second nozzle seat, the third nozzle seat and the fourth nozzle seat through bolts to form a first nozzle device, a second nozzle device, a third nozzle device and a fourth nozzle device. The urea jetting device can be better applied to the high-power diesel engine tail gas denitration SCR system, is high in dispersion degree of urea jetting, even in mixing, small in influence, simple in structure, and convenient to mount and maintain, and has no internal components of an exhaust pipe.
Description
Technical field
The utility model relates to a kind of SCR system urea-spray device, is used for specifically Marine High-power Diesel Engine tail gas denitration SCR system and sprays urea.
Background technique
At present, conventional diesel engine is because the tail gas discharge capacity is little, and needed exhaust caliber is less, and what be applied to therefore that the urea-spray of ordinary diesel oil tail gas denitration SCR system generally adopts is that the single nozzle central shaft sprays to porous.But this conventional urea-spray application of installation is when Marine High-power Diesel Engine tail gas SCR system, urea can occur mixes inhomogeneous with tail gas, spray (the tail gas pipeline diameter is excessive, and the tail gas of pressing close to tube wall contacts with urea not) not in place, one-jet emitted dose control accuracy is not high yet; Simultaneously because high-power diesel engine exhaust caliber is large, want nozzle is arranged on the central axis of pipeline, the urea-spray pipe that a length must be arranged is the pipeline radius places in the air inlet pipeline, the impact that long injection pipe is vulnerable to tail gas stream and vibration produces unpredictable amount of deflection, thereby cause actual ejection angle and the predefined value of nozzle deviation to occur, cause mixing inhomogeneous, cause urea waste and transformation efficiency low.Conventional injection apparatus can not satisfy Marine High-power Diesel Engine tail gas denitration SCR system.
Summary of the invention
The purpose of this utility model is in order to overcome conventional urea-spray application of installation in the deficiency of Marine High-power Diesel Engine tail gas denitration SCR system, a kind of Marine High-power Diesel Engine tail gas denitration SCR system urea-spray device is provided, and this injection apparatus can be applicable to the injection of urea in the diesel engine vent gas denitration SCR system under the Marine High-power Diesel Engine exhaust caliber Large Diameter Pipeline environment.
The technological scheme that provides according to the utility model, Marine High-power Diesel Engine tail gas denitration SCR system urea-spray device comprises the first nozzle carrier, the second nozzle seat, the 3rd nozzle carrier, the 4th nozzle carrier, nozzle, pipeline section is sprayed in air inlet, described air inlet is sprayed on the pipeline section and is offered four holes, the first nozzle carrier, the second nozzle seat, the 3rd nozzle carrier, the corresponding welding in four holes on the pipeline section is sprayed in the 4th nozzle carrier and air inlet, described four nozzles respectively with the first nozzle carrier, the second nozzle seat, the 3rd nozzle carrier, the 4th nozzle carrier connects into first with bolt, second, the 3rd, the 4th spray nozzle device.
As further improvement of the utility model, four spray-holes of described first, second, third, fourth spray nozzle device are positioned at same cross section, and are symmetrical along central shaft, and injection direction is radial spray, and the urea that each spray site ejects can interact;
As further improvement of the utility model, second nozzle seat 2 and the angle between the 3rd nozzle carrier near the described medial axis are 60 °; Angle between second nozzle seat and the first nozzle carrier is 30 °; Angle between the 3rd nozzle carrier and the 4th nozzle carrier is 30 °.
Compared with the prior art the utility model has the following advantages:
The design of the utility model multi-point injection can be used the small aperture nozzle under the larger condition of urea injecting quantity, dwindling of the increase of nozzle quantity and aperture can improve the dispersion degree that sprays urea; The length of gas exhaust piping jet segment has been lowered in the design in each same cross section of spray site, and simultaneously the urea that sprays of each spray site can the Interaction enhanced disturbance, promotes mixing of urea and tail gas; The radial spray mode takes full advantage of the large characteristic of exhaust caliber, can not be attached to exhaust wall so that spray urea, and radial spray has been saved the impact that injection line in the gas exhaust piping has lowered exhaust gas flow and vibration simultaneously.In sum, be compared to the conventional nozzle design, the utility model can better be practically applicable to Marine High-power Diesel Engine tail gas denitration SCR system, and it sprays urea dispersion degree height, mixes; The exhaust-pipe-free inner piece, influenced little, simple in structure being convenient to installed and overhauled.
Description of drawings
Fig. 1 is the utility model jet blower layout structure schematic representation.
Fig. 2 is the utility model injection apparatus decomposing schematic representation.
Embodiment
Following the utility model is further described in connection with the embodiment in the accompanying drawing:
As shown in Figure 1, comprise the first nozzle carrier 1, second nozzle seat 2, the 3rd nozzle carrier 3, the 4th nozzle carrier 4, nozzle 5, air inlet injection pipeline section 6, described air inlet is sprayed on the pipeline section 6 and is offered four holes, the corresponding welding in four holes on the pipeline section 6 is sprayed in the first nozzle carrier 1, second nozzle seat 2, the 3rd nozzle carrier 3, the 4th nozzle carrier 4 and air inlet, and described four nozzles 5 connect into first, second, third, fourth spray nozzle device with the first nozzle carrier 1, second nozzle seat 2, the 3rd nozzle carrier 3, the 4th nozzle carrier 4 usefulness bolts respectively.
Four spray-holes of described first, second, third, fourth spray nozzle device are positioned at same cross section, and are symmetrical along central shaft, and injection direction is radial spray, and the urea that each spray site ejects can interact.
Near the described medial axis second nozzle seat 2 and the angle between the 3rd nozzle carrier 3 are 60 °; Angle between second nozzle seat 2 and the first nozzle carrier 1 is 30 °; Angle between the 3rd nozzle carrier 3 and the 4th nozzle carrier 4 is 30 °.
Working principle of the present utility model and working procedure:
Direct and air inlet injection pipe 6 welding of four nozzle carriers of the utility model urea-spray device, reliable and stable; Nozzle 5 is connected and the exhaust-pipe-free inner piece with four direct bolts of nozzle carrier, and installation and repairing is simple and convenient, and need not adjust spray angle; Urea is sprayed by the nozzle of four spray nozzle devices simultaneously, each nozzle ejection aperture is little, dispersion degree is high, spray site with sectional axis the symmetrical so that mutual interference effect of urea that the spray-hole of the urea and the 3rd that first, second spray nozzle device spray-hole ejects, the 4th spray nozzle device ejects so that urea mixes more even with flue gas.Described spray nozzle device, each nozzle have independently dosage control unit and kinetic pump, and its dosage control unit has the unified control of central control system.
The utility model can effective application in Marine High-power Diesel Engine tail gas denitration SCR system, improve spray that urea disperses and with the mixing of flue gas, be conducive to the transformation efficiency of NOx, and the installation and repairing between sailing date that is easy to be expert at simple in structure.
Claims (5)
1. Marine High-power Diesel Engine tail gas denitration SCR system urea-spray device, it is characterized in that: comprise the first nozzle carrier (1), second nozzle seat (2), the 3rd nozzle carrier (3), the 4th nozzle carrier (4), nozzle (5), pipeline section (6) is sprayed in air inlet, described air inlet is sprayed on the pipeline section (6) and is offered four holes, the first nozzle carrier (1), second nozzle seat (2), the 3rd nozzle carrier (3), the corresponding welding in four holes on the pipeline section (6) is sprayed in the 4th nozzle carrier (4) and air inlet, described four nozzles (5) respectively with the first nozzle carrier (1), second nozzle seat (2), the 3rd nozzle carrier (3), the 4th nozzle carrier (4) connects into first with bolt, second, the 3rd, the 4th spray nozzle device.
2. Marine High-power Diesel Engine tail gas denitration SCR as claimed in claim 1 system urea-spray device, it is characterized in that: four spray-holes of described first, second, third, fourth spray nozzle device are positioned at same cross section, symmetrical along central shaft, injection direction is radial spray.
3. Marine High-power Diesel Engine tail gas denitration SCR as claimed in claim 1 system urea-spray device, it is characterized in that: the angle between described second nozzle seat (2) and the 3rd nozzle carrier (3) is 60 °.
4. Marine High-power Diesel Engine tail gas denitration SCR as claimed in claim 1 system urea-spray device, it is characterized in that: the angle between second nozzle seat (2) and the first nozzle carrier (1) is 30 °.
5. Marine High-power Diesel Engine tail gas denitration SCR as claimed in claim 1 system urea-spray device, it is characterized in that: the angle between the 3rd nozzle carrier (3) and the 4th nozzle carrier (4) is 30 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012205136165U CN202811020U (en) | 2012-09-29 | 2012-09-29 | Urea jetting device of high-power diesel engine tail gas denitration selective catalytic reduction (SCR) system for ship |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012205136165U CN202811020U (en) | 2012-09-29 | 2012-09-29 | Urea jetting device of high-power diesel engine tail gas denitration selective catalytic reduction (SCR) system for ship |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202811020U true CN202811020U (en) | 2013-03-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012205136165U Expired - Fee Related CN202811020U (en) | 2012-09-29 | 2012-09-29 | Urea jetting device of high-power diesel engine tail gas denitration selective catalytic reduction (SCR) system for ship |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202811020U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102852604A (en) * | 2012-09-29 | 2013-01-02 | 江苏绿源环保科技有限公司 | Urea injection device for tail gas denitration selective catalytic reduction (SCR) system of marine high-power diesel engine |
| CN113286646A (en) * | 2019-01-11 | 2021-08-20 | 康明斯排放处理公司 | Aftertreatment system with multiple dosing modules |
-
2012
- 2012-09-29 CN CN2012205136165U patent/CN202811020U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102852604A (en) * | 2012-09-29 | 2013-01-02 | 江苏绿源环保科技有限公司 | Urea injection device for tail gas denitration selective catalytic reduction (SCR) system of marine high-power diesel engine |
| CN113286646A (en) * | 2019-01-11 | 2021-08-20 | 康明斯排放处理公司 | Aftertreatment system with multiple dosing modules |
| CN113286646B (en) * | 2019-01-11 | 2023-09-12 | 康明斯排放处理公司 | Aftertreatment system with multiple dosing modules |
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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: TENNECO (CHINA) CO., LTD. Free format text: FORMER OWNER: JIANGSU LVYUAN ENVIRONMENTAL PROTECTION TECHNOLOGY CO., LTD. Effective date: 20140423 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 214142 WUXI, JIANGSU PROVINCE TO: 200000 HUPU DISTRICT, SHANGHI |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20140423 Address after: A C-D 17 Jiujiang road Whampoa District Shanghai City, No. 686 building, Baolong 200000 Patentee after: Tenneco (Chinese) Co. Ltd. Address before: 214142 Jiangsu province Wuxi New Area Shuofang Industrial Park Road two Zhenfa Patentee before: Jiangsu Lvyuan Environmental Protection Technology Co.,Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130320 Termination date: 20140929 |
|
| EXPY | Termination of patent right or utility model |