CN105089750A - Exhaust gas treatment device - Google Patents
Exhaust gas treatment device Download PDFInfo
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- CN105089750A CN105089750A CN201510519041.6A CN201510519041A CN105089750A CN 105089750 A CN105089750 A CN 105089750A CN 201510519041 A CN201510519041 A CN 201510519041A CN 105089750 A CN105089750 A CN 105089750A
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- mixing tube
- gas treatment
- exhaust gas
- treatment device
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Abstract
An exhaust gas treatment device comprises a shell, a plurality of partition boards, a mixing unit disposed in the shell and a tail gas treatment module. The shell comprises a first cavity, a second cavity and a third cavity. The mixing unit comprises a mixing tube and a flow guiding cover arranged on the periphery of the mixing tube in a sleeving mode, wherein, one end of the mixing tube comprises a plurality of fins disposed in the first cavity and distributed in the circumferential direction so that rotational flow can be formed when exhaust gas enters the mixing tube along the fins. The flow guiding cover is arranged at the other end of the mixing tube in the sleeving mode, and at least part of the mixing tube is inserted into the flow guiding cover. The flow guiding cover comprises an opening portion communicated with the second cavity, and the opening direction of the opening portion is opposite to the opening direction of the other end of the mixing tube so as to change the gas flow direction. By means of the arrangement, evaporation distance and time of urea are increased, and the gas flow mixing uniformity is improved.
Description
Technical field
The present invention relates to a kind of exhaust gas treatment device, belong to engine exhaust post-processing technology field.
Background technique
Research shows that the uniformity coefficient of ammonia distribution in exhaust after treatment system (such as selective catalytic reduction system operating, SCR system) pipeline has important impact to the overall performance of system and endurance quality.If ammonia skewness can cause regional area ammonia too much thus easily cause NH_3 leakage, and causes oxynitrides (NOx) transformation efficiency too low at other ammonia thin areas.The uneven distribution of long-time ammonia can cause catalyst ageing uneven, thus affects the overall performance of catalyzer.In addition, the uneven distribution of urea droplets can cause local tube wall or mixed construction temperature too low, form crystallization, outlet pipe can be blocked time serious, cause engine power performance to decline.
Therefore, be necessary to provide a kind of novel exhaust gas treatment device, to solve the problems of the technologies described above.
Summary of the invention
The object of the present invention is to provide a kind of exhaust gas treatment device mixed.
For achieving the above object, the present invention adopts following technological scheme: a kind of exhaust gas treatment device, it comprises housing, be installed on the some dividing plates in described housing, be positioned at described housing and by the mixing arrangement of described membrane support, and be positioned at the vent gas treatment module in described mixing arrangement downstream, wherein said some dividing plates comprise spaced first dividing plate and second partition, described housing comprises the first cavity being positioned at described first dividing plate upstream, the second cavity between described first dividing plate and described second partition, and be positioned at the 3rd cavity in described second partition downstream, described second partition comprises at least one through hole being communicated with described second cavity and described 3rd cavity, described mixing arrangement comprises mixing tube and is socketed in the air guide sleeve of described mixing tube periphery, one end of wherein said mixing tube comprises and is positioned at described first cavity and the some fins circumferentially distributed, in order to can eddy flow be formed when being vented and entering described mixing tube along described fin, described air guide sleeve is socketed in the other end of described mixing tube, described mixing tube inserts in described air guide sleeve at least partly, described air guide sleeve comprises the opening portion be communicated with described second cavity, and the opening direction of described opening portion is contrary to the opening direction of the described the other end of described mixing tube the flow direction changing air-flow.
As further improved technical scheme of the present invention, described first dividing plate is provided with first perforate of passing for described mixing tube, and described second partition is provided with second perforate of passing for described air guide sleeve, and described through hole is positioned at the outside of described second perforate.
As further improved technical scheme of the present invention, described housing is provided with the end plate being parallel to described first dividing plate, described exhaust gas treatment device comprises being arranged on the urea nozzle on described end plate, in order to be sprayed in described mixing tube by the urea liquid after atomization.
As further improved technical scheme of the present invention, described fin extends along the length direction of described mixing tube, described mixing tube is also included in the through hole closer to described end plate on described length direction, and described through hole distributes along the circumference of described mixing tube, in order to enter in described mixing tube for exhaust.
As further improved technical scheme of the present invention, described air guide sleeve is bowl-shape, and it comprises the bottom protruded out in described 3rd cavity.
As further improved technical scheme of the present invention, described bottom is arc-shaped, and described mixing tube extends beyond described second partition along its length.
As further improved technical scheme of the present invention, described exhaust gas treatment device also comprises and is positioned at described 3rd cavity and dunnage in order to upwards to support described air guide sleeve.
As further improved technical scheme of the present invention, described dunnage is parallel to described second partition and is positioned at the downstream of described second partition, and described dunnage is provided with some perforation.
As further improved technical scheme of the present invention, described exhaust gas treatment device comprises and being arranged in described air guide sleeve and supporting frame in order to support described mixing tube, and support frame as described above is provided with the positioning hole that passes for described mixing tube and is positioned at the peripheral airflow hole passed for revolution air-flow of described positioning hole.
As further improved technical scheme of the present invention, described vent gas treatment module comprises selective catalytic reduction module, and described exhaust gas treatment device also comprises the oxidation catalyzer being arranged on described housing upstream.
Compared to prior art, the present invention is socketed in the air guide sleeve of mixing tube periphery by arranging, change the flow direction of air-flow, add the Distance geometry time of Urea Evaporation, improves the uniformity of air-flow mixing.
Accompanying drawing explanation
Fig. 1 is the schematic perspective view of exhaust gas treatment device of the present invention.
Fig. 2 is the perspective view of Fig. 1.
Fig. 3 is the part isometric exploded view of Fig. 1.
Fig. 4 is the three-dimensional exploded view of the first reactor in Fig. 1.
Fig. 5 is the part isometric exploded view of mixing arrangement in Fig. 1.
Fig. 6 is the further three-dimensional exploded view of Fig. 5.
Fig. 7 is the side view of mixing tube in Fig. 6.
Fig. 8 is the plan view of mixing tube in Fig. 6, and designates eddy flow direction.
Fig. 9 is the generalized section of a certain angle of exhaust gas treatment device of the present invention.
Embodiment
Shown in please refer to the drawing 1 to Fig. 9, present invention is disclosed a kind of exhaust gas treatment device 100, in order to process the exhaust of motor (especially high power engine).On the whole, described exhaust gas treatment device 100 comprises the first reactor 1, mixed construction 2 and the second reactor 3.In illustrative embodiments of the present invention, on the flow direction of exhaust, described first reactor 1 is positioned at the upstream of described second reactor 3.Functionally, described first reactor 1 is oxidation catalyzer (DOC).Described second reactor 3 comprises vent gas treatment module 31, and described vent gas treatment module 31 is selective catalytic reduction module (SCR) in illustrative embodiments of the present invention.Certainly, person of ordinary skill in the field is appreciated that exhaust gas treatment device 100 of the present invention also can comprise the 3rd reactor, such as NH_3 leakage photocatalyst module (ASC).Above-mentioned various reactor can be designed to catalyst converter or the combination of other types according to actual needs, does not repeat them here.
Shown in please refer to the drawing 1 to Fig. 4, described first reactor 1 is comprised housing 11, is positioned at the suction tude 12 of described housing 11 one end, is positioned at the steam outlet pipe 13 of described housing 11 the other end and is erected at the oxidation catalyzer module 15 of described housing 11 by some dividing plates 14.
In illustrative embodiments of the present invention, the steam outlet pipe 13 of described first reactor 1 realizes being connected with described mixed construction 2 by bolt 16.
Described mixed construction 2 comprises housing 21, is installed on the some dividing plates 22 in described housing 21 and is positioned at described housing 21 and the mixing arrangement 4 supported by described dividing plate 22.Described vent gas treatment module 31 is positioned at described housing 21 equally, and is positioned at the downstream of described mixing arrangement 4.
Described mixing arrangement 4 comprises mixing tube 41 and is socketed in the air guide sleeve 42 of described mixing tube 41 periphery.
Shown in please refer to the drawing 9, described housing 21 is provided with end plate 210.Described some dividing plates 22 comprise spaced first dividing plate 221 and second partition 222.Described housing 21 comprises at the first cavity 211 of described first dividing plate 221 upstream, the second cavity 212 between described first dividing plate 221 and described second partition 222 and the 3rd cavity 213 being positioned at described second partition 222 downstream.Described end plate 210 is parallel to described first dividing plate 221, and described exhaust gas treatment device 100 comprises being arranged on the urea nozzle 23 on described end plate 210, in order to be sprayed in described mixing tube 41 by the urea liquid after atomization.
One end of described mixing tube 41 (being left end in the mode of execution shown in Fig. 9) comprises and is positioned at described first cavity 211 and the some fins 411 circumferentially distributed, in order to can form eddy flow when exhaust enters described mixing tube 41 along described fin 411.Described fin 411 extends along the length direction of described mixing tube 41.Described mixing tube 41 is also included in the through hole 412 closer to described end plate 210 on described length direction, described through hole 412 distributes along the circumference of described mixing tube 41, in order to enter in described mixing tube 41 for exhaust, increase the trend at the air-flow flow forward near described urea nozzle 23 place.
Described air guide sleeve 42 is socketed in the other end (being right-hand member in the mode of execution shown in Fig. 9) of described mixing tube 41.Described mixing tube 41 extends beyond described second partition 222 along its length.Described mixing tube 41 inserts in described air guide sleeve 42 at least partly.In illustrative embodiments of the present invention, described air guide sleeve 42 is in bowl-shape, and it comprises towards described second cavity 212 and the opening portion 421 be communicated with described second cavity 212, and protrudes out the bottom 422 in described 3rd cavity 213.The opening direction of described opening portion 421 is contrary with the opening direction of the described the other end of described mixing tube 41, to change the flow direction of air-flow.Described bottom 422 is arc-shaped, with better reflected gas stream.
Described exhaust gas treatment device 100 also comprises and is positioned at described 3rd cavity 213 and dunnage 223 in order to upwards to support described air guide sleeve 42.Described dunnage 223 is parallel to described second partition 222 and is positioned at the downstream of described second partition 222, and described dunnage 223 is provided with some perforation 224 of passing for air-flow.
Shown in please refer to the drawing 5, Fig. 6 and Fig. 9, described exhaust gas treatment device 100 comprises and being arranged in described air guide sleeve 42 and supporting frame 43 in order to support described mixing tube 41.Support frame as described above 43 is provided with the positioning hole 431 that passes for described mixing tube 41 and is positioned at the airflow hole 432 passed for revolution air-flow described positioning hole 431 periphery.
Described first dividing plate 221 is provided with first perforate 2211 of passing for described mixing tube 41.Described second partition 222 is provided with second perforate 2221 of passing for described air guide sleeve 42.Described second partition 222 comprises the some through holes 2222 being communicated with described second cavity 212 and described 3rd cavity 213, and described through hole 2222 is positioned at the outside of described second perforate 2221.
During use, the exhaust of motor, after described first reactor 1 processes, enters described housing 21 from described steam outlet pipe 13.First, after exhaust enters described first cavity 211, be vented through described fin 411 and through hole 412, and form spiral helicine air-flow under the effect of described fin 411, then enter described mixing tube 41.
Secondly, urea liquid is atomised to described mixing tube 41 by the described urea nozzle 23 being positioned at end.Urea droplets is surrounded by the air-flow rotated, and urea droplets is comparatively evenly distributed on tube wall under the influence of centrifugal force, to increase Urea Evaporation area, improves relative evaporation.
Air-flow moves to opposite side in described mixing tube 41, enters in described air guide sleeve 42, and changes the flow direction of air-flow by described air guide sleeve 42, and air-flow is entered in described second cavity 212.Subsequently, air-flow enters into the 3rd cavity 213 through the through hole 2222 on second partition 222, and flows out after described second reactor 3 processes.By arranging the air guide sleeve 42 being socketed in mixing tube 41 periphery, changing the flow direction of air-flow, adding the Distance geometry time of Urea Evaporation, improve the uniformity of air-flow mixing.
In addition, above embodiment is only for illustration of the present invention and unrestricted technological scheme described in the invention, understanding of this description should based on person of ordinary skill in the field, although this specification reference the above embodiments are to present invention has been detailed description, but, those of ordinary skill in the art is to be understood that, person of ordinary skill in the field still can modify to the present invention or equivalent replacement, and all do not depart from technological scheme and the improvement thereof of the spirit and scope of the present invention, all should be encompassed in right of the present invention.
Claims (10)
1. an exhaust gas treatment device, it comprises housing, be installed on the some dividing plates in described housing, be positioned at described housing and by the mixing arrangement of described membrane support, and be positioned at the vent gas treatment module in described mixing arrangement downstream, wherein said some dividing plates comprise spaced first dividing plate and second partition, described housing comprises the first cavity being positioned at described first dividing plate upstream, the second cavity between described first dividing plate and described second partition, and be positioned at the 3rd cavity in described second partition downstream, described second partition comprises at least one through hole being communicated with described second cavity and described 3rd cavity, it is characterized in that: described mixing arrangement comprises mixing tube and is socketed in the air guide sleeve of described mixing tube periphery, one end of wherein said mixing tube comprises and is positioned at described first cavity and the some fins circumferentially distributed, in order to can eddy flow be formed when being vented and entering described mixing tube along described fin, described air guide sleeve is socketed in the other end of described mixing tube, described mixing tube inserts in described air guide sleeve at least partly, described air guide sleeve comprises the opening portion be communicated with described second cavity, and the opening direction of described opening portion is contrary to the opening direction of the described the other end of described mixing tube the flow direction changing air-flow.
2. exhaust gas treatment device as claimed in claim 1, it is characterized in that: described first dividing plate is provided with first perforate of passing for described mixing tube, described second partition is provided with second perforate of passing for described air guide sleeve, and described through hole is positioned at the outside of described second perforate.
3. exhaust gas treatment device as claimed in claim 1, it is characterized in that: described housing is provided with the end plate being parallel to described first dividing plate, described exhaust gas treatment device comprises being arranged on the urea nozzle on described end plate, in order to be sprayed in described mixing tube by the urea liquid after atomization.
4. exhaust gas treatment device as claimed in claim 3, it is characterized in that: described fin extends along the length direction of described mixing tube, described mixing tube is also included in the through hole closer to described end plate on described length direction, described through hole distributes along the circumference of described mixing tube, in order to enter in described mixing tube for exhaust.
5. exhaust gas treatment device as claimed in claim 1, it is characterized in that: described air guide sleeve is bowl-shape, it comprises the bottom protruded out in described 3rd cavity.
6. exhaust gas treatment device as claimed in claim 5, it is characterized in that: described bottom is arc-shaped, described mixing tube extends beyond described second partition along its length.
7. exhaust gas treatment device as claimed in claim 6, is characterized in that: described exhaust gas treatment device also comprises and is positioned at described 3rd cavity and dunnage in order to upwards to support described air guide sleeve.
8. exhaust gas treatment device as claimed in claim 7, is characterized in that: described dunnage is parallel to described second partition and is positioned at the downstream of described second partition, and described dunnage is provided with some perforation.
9. the exhaust gas treatment device as described in any one in claim 1 to 8, it is characterized in that: described exhaust gas treatment device comprises and being arranged in described air guide sleeve and supporting frame in order to support described mixing tube, support frame as described above is provided with the positioning hole that passes for described mixing tube and is positioned at the peripheral airflow hole passed for revolution air-flow of described positioning hole.
10. exhaust gas treatment device as claimed in claim 1, is characterized in that: described vent gas treatment module comprises selective catalytic reduction module, and described exhaust gas treatment device also comprises the oxidation catalyzer being arranged on described housing upstream.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510519041.6A CN105089750B (en) | 2015-08-21 | 2015-08-21 | exhaust gas treatment device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510519041.6A CN105089750B (en) | 2015-08-21 | 2015-08-21 | exhaust gas treatment device |
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| CN105089750A true CN105089750A (en) | 2015-11-25 |
| CN105089750B CN105089750B (en) | 2018-04-06 |
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| CN201510519041.6A Active CN105089750B (en) | 2015-08-21 | 2015-08-21 | exhaust gas treatment device |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106246303A (en) * | 2016-10-12 | 2016-12-21 | 天纳克（苏州）排放系统有限公司 | Tail-gas after treatment apparatus |
| WO2017032231A1 (en) * | 2015-08-21 | 2017-03-02 | 天纳克（苏州）排放系统有限公司 | Exhaust gas treatment apparatus |
| WO2017101628A1 (en) * | 2015-12-18 | 2017-06-22 | 天纳克（苏州）排放系统有限公司 | Engine exhaust after-treatment device |
| CN106894870A (en) * | 2015-12-18 | 2017-06-27 | 天纳克（苏州）排放系统有限公司 | Exhaust post-treatment apparatus of engine |
| CN107152355A (en) * | 2016-03-02 | 2017-09-12 | 福特环球技术公司 | Blender for mixing exhaust |
| CN107165704A (en) * | 2017-07-27 | 2017-09-15 | 天纳克（苏州）排放系统有限公司 | Engine exhaust post-processes mixing arrangement and its after-treatment device and application |
| CN107366566A (en) * | 2016-05-13 | 2017-11-21 | 天纳克（苏州）排放系统有限公司 | Engine exhaust aftertreatment assembly |
| CN107489501A (en) * | 2016-06-13 | 2017-12-19 | 天纳克（苏州）排放系统有限公司 | Exhaust aftertreatment mixing arrangement |
| WO2017215461A1 (en) * | 2016-06-15 | 2017-12-21 | 天纳克（苏州）排放系统有限公司 | Exhaust aftertreatment apparatus |
| WO2018006719A1 (en) * | 2016-07-04 | 2018-01-11 | 天纳克（苏州）排放系统有限公司 | Tail gas post-treatment device |
| WO2018006720A1 (en) * | 2016-07-04 | 2018-01-11 | 天纳克（苏州）排放系统有限公司 | Mixing module |
| CN108425724A (en) * | 2016-04-11 | 2018-08-21 | 天纳克（苏州）排放系统有限公司 | Tail-gas after treatment apparatus |
| CN108457726A (en) * | 2017-02-20 | 2018-08-28 | 天纳克（苏州）排放系统有限公司 | Tail-gas after treatment apparatus |
| WO2019019724A1 (en) * | 2017-07-27 | 2019-01-31 | 天纳克（苏州）排放系统有限公司 | Engine exhaust after-treatment package and application thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2017032231A1 (en) * | 2015-08-21 | 2017-03-02 | 天纳克（苏州）排放系统有限公司 | Exhaust gas treatment apparatus |
| CN108952905A (en) * | 2015-12-18 | 2018-12-07 | 天纳克（苏州）排放系统有限公司 | Mixing arrangement |
| WO2017101628A1 (en) * | 2015-12-18 | 2017-06-22 | 天纳克（苏州）排放系统有限公司 | Engine exhaust after-treatment device |
| CN106894870A (en) * | 2015-12-18 | 2017-06-27 | 天纳克（苏州）排放系统有限公司 | Exhaust post-treatment apparatus of engine |
| CN107152355A (en) * | 2016-03-02 | 2017-09-12 | 福特环球技术公司 | Blender for mixing exhaust |
| CN108425724A (en) * | 2016-04-11 | 2018-08-21 | 天纳克（苏州）排放系统有限公司 | Tail-gas after treatment apparatus |
| CN108425724B (en) * | 2016-04-11 | 2019-07-23 | 天纳克（苏州）排放系统有限公司 | Tail-gas after treatment apparatus |
| CN107366566A (en) * | 2016-05-13 | 2017-11-21 | 天纳克（苏州）排放系统有限公司 | Engine exhaust aftertreatment assembly |
| CN107489501A (en) * | 2016-06-13 | 2017-12-19 | 天纳克（苏州）排放系统有限公司 | Exhaust aftertreatment mixing arrangement |
| WO2017215461A1 (en) * | 2016-06-15 | 2017-12-21 | 天纳克（苏州）排放系统有限公司 | Exhaust aftertreatment apparatus |
| CN107514305A (en) * | 2016-06-15 | 2017-12-26 | 天纳克（苏州）排放系统有限公司 | Tail-gas after treatment apparatus |
| CN107514305B (en) * | 2016-06-15 | 2024-06-25 | 天纳克（苏州）排放系统有限公司 | Tail gas aftertreatment device |
| WO2018006719A1 (en) * | 2016-07-04 | 2018-01-11 | 天纳克（苏州）排放系统有限公司 | Tail gas post-treatment device |
| WO2018006720A1 (en) * | 2016-07-04 | 2018-01-11 | 天纳克（苏州）排放系统有限公司 | Mixing module |
| CN106246303A (en) * | 2016-10-12 | 2016-12-21 | 天纳克（苏州）排放系统有限公司 | Tail-gas after treatment apparatus |
| CN106246303B (en) * | 2016-10-12 | 2019-01-15 | 天纳克（苏州）排放系统有限公司 | Tail-gas after treatment apparatus |
| CN108457726A (en) * | 2017-02-20 | 2018-08-28 | 天纳克（苏州）排放系统有限公司 | Tail-gas after treatment apparatus |
| WO2019019724A1 (en) * | 2017-07-27 | 2019-01-31 | 天纳克（苏州）排放系统有限公司 | Engine exhaust after-treatment package and application thereof |
| CN107165704A (en) * | 2017-07-27 | 2017-09-15 | 天纳克（苏州）排放系统有限公司 | Engine exhaust post-processes mixing arrangement and its after-treatment device and application |
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