CN102840018A - Gas mixing device of tail gas denitration SCR (Semiconductor Control Rectifier) system of high-power diesel engine for ship - Google Patents
Gas mixing device of tail gas denitration SCR (Semiconductor Control Rectifier) system of high-power diesel engine for ship Download PDFInfo
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- CN102840018A CN102840018A CN2012103781403A CN201210378140A CN102840018A CN 102840018 A CN102840018 A CN 102840018A CN 2012103781403 A CN2012103781403 A CN 2012103781403A CN 201210378140 A CN201210378140 A CN 201210378140A CN 102840018 A CN102840018 A CN 102840018A
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Abstract
The invention relates to a gas mixing device of a tail gas denitration SCR (Semiconductor Control Rectifier) system of a high-power diesel engine for a ship. The gas mixing device comprises a gas inlet pipeline and a set of mixing device, wherein the set of mixing device is formed by combining two independent mixers, and the two independent mixers are parallelly arranged on installing holes of the gas inlet pipeline; one independent mixer comprises a ring body, a first flow guide plate, a second flow guide plate, a third flow guide plate, a fourth flow guide plate, a fifth flow guide plate and a sixth flow guide plate, wherein the first flow guide plate, the second flow guide plate, the third flow guide plate, the fourth flow guide plate, the fifth flow guide plate and the sixth flow guide plate are mutually parallelly embedded into the ring body; the front parts of the second flow guide plate, the third flow guide plate, the fourth flow guide plate and the fifth flow guide plate are respectively protruded and provided with spoiler fins, and the rear parts of the second flow guide plate, the third flow guide plate, the fourth flow guide plate and the fifth flow guide plate are provided with rear protruded flow guide vanes; and the sixth flow guide plate is provided with a front protruded spoiler, a spoiler fin and a rear protruded spoiler. According to the invention, the mixing uniformity can be enhanced, and the defect of insufficient mixing of a tail gas and carbamide before the tail gas and the carbamide are reacted is thoroughly overcome, and therefore, the contact surface between the tail gas and the carbamide is ensured and the purification efficiency of the tail gas is increased.
Description
Technical field
The present invention relates to a kind of high-power diesel engine tail gas denitration SCR system gas mixing arrangement peculiar to vessel, especially a kind of mixing efficiency that improves tail gas and urea in the diesel engine exhaust gas purification device that relates to is avoided the device of urea crystals.
Background technique
Conventional diesel engine exhaust gas purification device has does not have this mixing arrangement; But through the lengthening pipeline or increase the mixability of tail gas and urea; This mode pipeline that extends has at first increased cost, and in addition, long pipeline has increased the loss of exhaust temperature; Make urea produce crystallization easily, thereby influence the efficient of tail gas clean-up.What mixing arrangement was housed in addition also is the single-stage turbomixer, and such mixer can only be used in the exhaust environment of little caliber, when being applied to the big caliber environment of high-power diesel engine, the urea sedimentation can occur, mix phenomenons such as inhomogeneous.
Summary of the invention
The objective of the invention is to overcome above-mentioned deficiency; A kind of high-power diesel engine tail gas denitration SCR system gas mixing arrangement peculiar to vessel is provided; This gas mixer can be under the situation of cost and the loss of minimizing tail gas temperature that practices every conceivable frugality; Tail gas and urea are fully mixed, increase their surface of contact, improve the device of its transformation efficiency.
According to technological scheme provided by the invention; High-power diesel engine tail gas denitration SCR system gas mixing arrangement peculiar to vessel comprises air inlet pipeline, one group of mixing arrangement; Said one group of mixing arrangement by two independently mixer combine, said two independently mixer be installed in parallel in the mounting hole place of air inlet pipeline.
Said two independently mixer structure is identical, one of them independently mixer comprise cirque body, first guide plate, second guide plate, the 3rd guide plate, the 4th guide plate, the 5th guide plate, the 6th guide plate; What first guide plate, second guide plate, the 3rd guide plate, the 4th guide plate, the 5th guide plate, the 6th guide plate were parallel to each other is embedded in the cirque body, and length has nothing in common with each other between first guide plate, second guide plate, the 3rd guide plate, the 4th guide plate, the 5th guide plate, the 6th guide plate.
As further improvement of the present invention, the said first guide plate front end is outstanding, and first guide plate is provided with the flow-disturbing fin.
As further improvement of the present invention, the said second guide plate front end is outstanding, and second guide plate is provided with flow-disturbing fin and processus aboralis guide plate.
As further improvement of the present invention, said the 3rd guide plate front end is outstanding, and the 3rd guide plate is provided with flow-disturbing fin and processus aboralis guide plate.
As further improvement of the present invention, said the 4th guide plate front end is outstanding, and the 4th guide plate is provided with flow-disturbing fin and processus aboralis guide plate.
As further improvement of the present invention, said the 5th guide plate front end is outstanding, and the 5th guide plate is provided with flow-disturbing fin and processus aboralis guide plate.
As further improvement of the present invention, said the 6th guide plate front end is outstanding, and the 6th guide plate is provided with flow-disturbing fin, preceding prominent spoiler and processus aboralis spoiler.
Compared with present technology the present invention has the following advantages:
Structure of the present invention is simple relatively, compact, rationally; Adopt and seethe mixing up and down, be fit to big caliber multiphase flow and mix; By two mixer superpositions, carry out two-stage and mix, strengthen tail gas in the mixed effect of urea, make gas through the time upset its flow direction, it is fully mixed with urea; Easily manufactured, the practical row that is prone to; Thoroughly having solved tail gas and urea can not well-mixed drawback before reaction, thereby has guaranteed the surface of contact of tail gas and urea, has improved tail gas clean-up efficient.
Description of drawings
Fig. 1 is mounting arrangement schematic representation in the air inlet pipeline of the present invention.
Fig. 2 is a schematic perspective view of the present invention.
Fig. 3 is the present invention's first deflector structure schematic representation.
Fig. 4 is the present invention's second deflector structure schematic representation.
Fig. 5 is the present invention's the 3rd deflector structure schematic representation.
Fig. 6 is the present invention's the 4th deflector structure schematic representation.
Fig. 7 is the present invention's the 5th deflector structure schematic representation.
Fig. 8 is the present invention's the 6th deflector structure schematic representation.
Embodiment
Following the present invention will combine the embodiment in the accompanying drawing to further describe:
As shown in Figure 1; Comprise that high-power diesel engine tail gas denitration SCR system gas mixing arrangement peculiar to vessel comprises air inlet pipeline 1, one group of mixing arrangement 2; Said one group of mixing arrangement 2 by two independently mixer combine, said two independently mixer be installed in parallel in mounting hole 3 places of air inlet pipeline 1.
Shown in Fig. 2～8 figure, said two independently mixer structure is identical, one of them independently mixer comprise cirque body 4, first guide plate 5, second guide plate 6, the 3rd guide plate 7, the 4th guide plate 8, the 5th guide plate 9, the 6th guide plate 10; What first guide plate 5, second guide plate 6, the 3rd guide plate 7, the 4th guide plate 8, the 5th guide plate 9, the 6th guide plate 10 were parallel to each other is embedded in the cirque body 4, and length has nothing in common with each other between first guide plate 5, second guide plate 6, the 3rd guide plate 7, the 4th guide plate 8, the 5th guide plate 9, the 6th guide plate 10.
Said first guide plate, 5 front ends are outstanding, and first guide plate 5 is provided with flow-disturbing fin 11.
Said second guide plate, 6 front ends are outstanding, and second guide plate 6 is provided with flow-disturbing fin 12 and processus aboralis guide plate 13.
Said the 3rd guide plate 7 front ends are outstanding, and the 3rd guide plate 7 is provided with flow-disturbing fin 14 and processus aboralis guide plate 15.
Said the 4th guide plate 8 front ends are outstanding, and the 4th guide plate 8 is provided with flow-disturbing fin 16 and processus aboralis guide plate 17.
Said the 5th guide plate 9 front ends are outstanding, and the 5th guide plate 9 is provided with flow-disturbing fin 18 and processus aboralis guide plate 19.
Said the 6th guide plate 10 front ends are outstanding, and the 6th guide plate 10 is provided with flow-disturbing fin 21, preceding prominent spoiler 20 and processus aboralis spoiler 22.
Working principle of the present invention and working procedure:
After tail gas gets in the air inlet pipeline 1 and to mix with urea among the present invention; Because the urea straying quatity is bigger, can not be decomposed into NH3 rapidly, thereby multiphase flow in air inlet pipeline, occur; Urea deposits is in lower stream of airflow; When one group of mixing arrangement 2, the bottom tail gas that 20 pairs of the preceding prominent spoilers of mixer bottom guide plate 10 are rich in urea carries out sufficient flow-disturbing, through the processus aboralis guide plate of each guide plate 6～10 13,15,17,19,22 urea is fully mixed in tail gas again.Mixing can't reach well-mixed tail gas through one-level, mixes once more through second level mixer to have reached well-mixed purpose again.
The present invention has not only improved mixing efficiency, thereby improves transformation efficiency, has practiced thrift the cost of pipeline, and has saved the space, work under the environment that is more suitable for being restricted in spaces such as boats and ships.
Claims (8)
1. high-power diesel engine tail gas denitration SCR system gas mixing arrangement peculiar to vessel; It is characterized in that: comprise air inlet pipeline (1), one group of mixing arrangement (2); Said one group of mixing arrangement (2) by two independently mixer combine, said two independently mixer be installed in parallel in the air inlet pipeline (1).
2. high-power diesel engine tail gas denitration SCR system gas mixing arrangement peculiar to vessel as claimed in claim 1; It is characterized in that: said two independently mixer structure is identical, one of them independently mixer comprise cirque body (4), first guide plate (5), second guide plate (6), the 3rd guide plate (7), the 4th guide plate (8), the 5th guide plate (9), the 6th guide plate (10); What first guide plate (5), second guide plate (6), the 3rd guide plate (7), the 4th guide plate (8), the 5th guide plate (9), the 6th guide plate (10) were parallel to each other is embedded in the cirque body (4).
3. high-power diesel engine tail gas denitration SCR system gas mixing arrangement peculiar to vessel as claimed in claim 1 is characterized in that: said first guide plate (5) front end is outstanding, and first guide plate (5) is provided with flow-disturbing fin (11).
4. high-power diesel engine tail gas denitration SCR system gas mixing arrangement peculiar to vessel as claimed in claim 1 is characterized in that: said second guide plate (6) front end is outstanding, and second guide plate (6) is provided with flow-disturbing fin (12) and processus aboralis guide plate (13).
5. high-power diesel engine tail gas denitration SCR system gas mixing arrangement peculiar to vessel as claimed in claim 1 is characterized in that: said the 3rd guide plate (7) front end is outstanding, and the 3rd guide plate (7) is provided with flow-disturbing fin (14) and processus aboralis guide plate (15).
6. high-power diesel engine tail gas denitration SCR system gas mixing arrangement peculiar to vessel as claimed in claim 1 is characterized in that: said the 4th guide plate (8) front end is outstanding, and the 4th guide plate (8) is provided with flow-disturbing fin (16) and processus aboralis guide plate (17).
7. high-power diesel engine tail gas denitration SCR system gas mixing arrangement peculiar to vessel as claimed in claim 1 is characterized in that: said the 5th guide plate (9) front end is outstanding, and the 5th guide plate (9) is provided with flow-disturbing fin (18) and processus aboralis guide plate (19).
8. high-power diesel engine tail gas denitration SCR system gas mixing arrangement peculiar to vessel as claimed in claim 1; It is characterized in that: said the 6th guide plate (10) front end is outstanding, and the 6th guide plate (10) is provided with flow-disturbing fin (21), preceding prominent spoiler (20) and processus aboralis spoiler (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103781403A CN102840018A (en) | 2012-09-29 | 2012-09-29 | Gas mixing device of tail gas denitration SCR (Semiconductor Control Rectifier) system of high-power diesel engine for ship |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103781403A CN102840018A (en) | 2012-09-29 | 2012-09-29 | Gas mixing device of tail gas denitration SCR (Semiconductor Control Rectifier) system of high-power diesel engine for ship |
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| CN102840018A true CN102840018A (en) | 2012-12-26 |
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| CN2012103781403A Pending CN102840018A (en) | 2012-09-29 | 2012-09-29 | Gas mixing device of tail gas denitration SCR (Semiconductor Control Rectifier) system of high-power diesel engine for ship |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104963750A (en) * | 2015-07-07 | 2015-10-07 | 江苏科技大学 | Static mixing device for SCR system of high-power diesel engine |
| CN105298599A (en) * | 2015-11-18 | 2016-02-03 | 天纳克（苏州）排放系统有限公司 | Mixer and mixing assembly thereof |
| US9387438B2 (en) | 2014-02-14 | 2016-07-12 | Tenneco Automotive Operating Company Inc. | Modular system for reduction of sulphur oxides in exhaust |
| WO2017133631A1 (en) * | 2016-02-03 | 2017-08-10 | 天纳克（苏州）排放系统有限公司 | Mixing cavity assembly |
| CN108979805A (en) * | 2018-09-07 | 2018-12-11 | 安徽艾可蓝环保股份有限公司 | A kind of Novel SCR system mixing disturbing flow device meeting six discharge standard of state |
| US11560831B2 (en) | 2018-02-28 | 2023-01-24 | Tenneco Gmbh | Low-pressure EGR system with turbo bypass |
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| CN202900381U (en) * | 2012-09-29 | 2013-04-24 | 江苏绿源环保科技有限公司 | Gas mixing device of tail gas denitration semiconductor control rectifier (SCR) system of high-power diesel engine for ship |
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| WO2011073717A1 (en) * | 2009-12-18 | 2011-06-23 | Renault Trucks | Mixing system for an exhaust gases after-treatment arrangement |
| US20120227390A1 (en) * | 2011-03-09 | 2012-09-13 | Megan Wikaryasz | Tri-Flow Exhaust Treatment Device with Reductant Mixing Tube |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9387438B2 (en) | 2014-02-14 | 2016-07-12 | Tenneco Automotive Operating Company Inc. | Modular system for reduction of sulphur oxides in exhaust |
| CN104963750A (en) * | 2015-07-07 | 2015-10-07 | 江苏科技大学 | Static mixing device for SCR system of high-power diesel engine |
| CN105298599A (en) * | 2015-11-18 | 2016-02-03 | 天纳克（苏州）排放系统有限公司 | Mixer and mixing assembly thereof |
| WO2017133631A1 (en) * | 2016-02-03 | 2017-08-10 | 天纳克（苏州）排放系统有限公司 | Mixing cavity assembly |
| CN107035480B (en) * | 2016-02-03 | 2019-08-09 | 天纳克（苏州）排放系统有限公司 | Mixing chamber component |
| US11560831B2 (en) | 2018-02-28 | 2023-01-24 | Tenneco Gmbh | Low-pressure EGR system with turbo bypass |
| CN108979805A (en) * | 2018-09-07 | 2018-12-11 | 安徽艾可蓝环保股份有限公司 | A kind of Novel SCR system mixing disturbing flow device meeting six discharge standard of state |
| CN108979805B (en) * | 2018-09-07 | 2023-08-29 | 安徽艾可蓝环保股份有限公司 | Novel SCR system mixed turbulent flow device meeting national six-emission standard |
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Owner name: TENNECO (CHINA) CO., LTD. Free format text: FORMER OWNER: JIANGSU LVYUAN ENVIRONMENTAL PROTECTION TECHNOLOGY CO., LTD. Effective date: 20140410 |
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Free format text: CORRECT: ADDRESS; FROM: 214142 WUXI, JIANGSU PROVINCE TO: 200001 HUANGPU, SHANGHAI |
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Effective date of registration: 20140410 Address after: A C-D 17 Jiujiang road Whampoa District Shanghai City, No. 686 building, Baolong 200001 Applicant after: Tenneco (Chinese) Co. Ltd. Address before: 214142 Jiangsu province Wuxi New Area Shuofang Industrial Park Road two Zhenfa Applicant before: Jiangsu Lvyuan Environmental Protection Technology Co.,Ltd. |
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Application publication date: 20121226 |