CN111764989A - Efficient post-processing packaged SCR mixer system and processing method thereof - Google Patents

Efficient post-processing packaged SCR mixer system and processing method thereof Download PDF

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Publication number
CN111764989A
CN111764989A CN202010605611.4A CN202010605611A CN111764989A CN 111764989 A CN111764989 A CN 111764989A CN 202010605611 A CN202010605611 A CN 202010605611A CN 111764989 A CN111764989 A CN 111764989A
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China
Prior art keywords
mixer
shell
scr
outlet
urea
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Granted
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CN202010605611.4A
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Chinese (zh)
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CN111764989B (en
Inventor
王启琛
冯坦
侯甲成
李兴章
许法亮
刘志辉
刘凤阳
赵文冉
魏明
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Dongfeng Commercial Vehicle Co Ltd
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Dongfeng Commercial Vehicle Co Ltd
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Publication of CN111764989A publication Critical patent/CN111764989A/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
    • F01N3/28—Construction of catalytic reactors
    • F01N3/2892—Exhaust flow directors or the like, e.g. upstream of catalytic device
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/009—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having two or more separate purifying devices arranged in series
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
    • F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
    • F01N3/2066—Selective catalytic reduction [SCR]
    • F01N3/208—Control of selective catalytic reduction [SCR], e.g. dosing of reducing agent
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2250/00—Combinations of different methods of purification
    • F01N2250/02—Combinations of different methods of purification filtering and catalytic conversion
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2570/00—Exhaust treating apparatus eliminating, absorbing or adsorbing specific elements or compounds
    • F01N2570/14—Nitrogen oxides
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2610/00—Adding substances to exhaust gases
    • F01N2610/02—Adding substances to exhaust gases the substance being ammonia or urea
    • 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

Abstract

The invention discloses an efficient aftertreatment packaged SCR mixer system and a treatment method thereof, wherein the system comprises a DPF (diesel particulate filter) particle trapping unit, a mixer unit and an SCR (selective catalytic reduction) catalyst unit which are sequentially connected, the mixer unit comprises a mixer cylinder, the mixer cylinder is provided with a mixer inlet and a mixer outlet, the mixer inlet is connected with an outlet of the DPF particle trapping unit, the mixer outlet is connected with an inlet of the SCR catalyst unit, the top of the mixer cylinder is provided with a urea nozzle opening, and a flow guide mechanism is arranged in the mixer cylinder. The invention combines and unifies the design of the mixer and the design of the package, and utilizes the space structure to form a flow field which is beneficial to the rapid crushing, evaporation, hydrolysis and even distribution of the urea solution, promotes the crushing and evaporation of urea liquid drops and the conversion of urea to ammonia, reduces the crystallization risk of urea, realizes the even distribution of ammonia and exhaust gas at the SCR inlet, and reduces the integral pressure of the mixer.

Description

Efficient post-processing packaged SCR mixer system and processing method thereof
Technical Field
The invention belongs to the technical field of engine tail gas purification, and particularly relates to an efficient aftertreatment packaged SCR mixer system and a treatment method thereof.
Background
The mixer unit is present in the diesel aftertreatment system, in front of the SCR catalyst, to promote the breaking up of urea droplets, evaporation and conversion of urea to ammonia. SCR mixer unit for increasing SCR catalyst inlet NH3Concentration and exhaust velocity uniformity. The incomplete crushing and evaporation of urea liquid drops can cause the reduction of NOx conversion rate, and urea crystals are formed to block the internal structure. The uneven distribution of ammonia gas concentration and exhaust velocity reduces the NOx conversion efficiency, and can cause uneven aging of the catalyst, which affects the performance of the SCR catalyst.
In the prior art, the invention patent of urea cyclone mixer with Chinese grant publication No. CN108005763A specifically discloses a urea cyclone mixer, which comprises a cylinder body, wherein two ends of the cylinder body are both open, one end of the cylinder body is used as an air inlet, and the other end of the cylinder body is used as an air outlet; a Z-shaped baffle is arranged in the cylinder body, and the Z-shaped baffle divides the inner cavity of the cylinder body into a front cavity and a rear cavity; a rotational flow piece and a perforated pipe are arranged in the cylinder body, and the rotational flow piece and the perforated pipe are connected to the transverse part of the Z-shaped baffle; the rotational flow piece is communicated with the perforated pipe; the rotational flow piece is positioned in the front cavity of the cylinder body, and the porous pipe is positioned in the rear cavity of the cylinder body; the rotational flow piece is provided with rotational flow blades; the top end of the rotational flow piece is connected with a nozzle, and the nozzle extends out of the circumferential surface of the cylinder; the pipe wall of the porous pipe is provided with a plurality of air holes. The cyclone mixer ensures that urea is hydrolyzed completely, is not easy to crystallize, has low back pressure and is compact in section.
In the invention patent of 'barrel type SCR after-treatment mixing device' with Chinese grant publication No. CN108167050A, a barrel type SCR after-treatment mixing device is specifically disclosed, which comprises a urea mixing chamber, wherein the front end and the rear end of the urea mixing chamber are respectively connected with a first quick assembly and disassembly flange and a second quick assembly and disassembly flange, an airflow mixer and an airflow homogenizer are respectively fixed in the front and the rear of the urea mixing chamber, a urea mixer is arranged in the urea mixing chamber, and a urea injection base is arranged on the side wall of the urea mixing chamber. The urea spraying base and the urea mixer are arranged at an angle of 90 degrees. The device has the advantages of simple structure, excellent design, high ammonia mixing efficiency, convenient assembly and disassembly, and convenient treatment if urea crystallization is generated under special conditions in the later period, and is suitable for national IV and V emission standards.
The prior art has the following defects: (1) the existing design only designs the mixer independently, and cannot realize the integrated design of the mixer and an aftertreatment system; (2) the existing design can not effectively utilize the packaging structure and space of the post processor, thus causing the waste of resources; (3) the existing mixer structure design generally has the defects that when the structure is simple, the urea solution is broken and has poor evaporation, and urea crystals are easy to form; (4) the existing scheme is designed to be welded in the mixer, urea corrosion is easily generated at a welding spot, and the service life of the mixer is shortened.
Disclosure of Invention
The present invention is directed to solving the above-mentioned deficiencies of the prior art and to providing an efficient aftertreatment packaged SCR mixer system and a method for processing the same.
In order to achieve the purpose, the invention adopts the technical scheme that: an efficient aftertreatment packaged SCR mixer system comprises a DPF particle trapping unit, a mixer unit and an SCR catalyst unit which are connected in sequence, and is characterized in that: the mixer unit comprises a mixer barrel, the mixer barrel is provided with a mixer inlet and a mixer outlet, the mixer inlet is connected with an outlet of the DPF particle trapping unit, the mixer outlet is connected with an inlet of the SCR catalyst unit, a urea nozzle opening is formed in the top of the mixer barrel, and a flow guide mechanism is arranged in the mixer barrel.
As a preferred embodiment, the diversion mechanism comprises an air inlet diversion device and an air outlet diversion device, the air inlet diversion device is communicated with the mixer inlet, and the air outlet diversion device is communicated with the mixer outlet.
As a preferred embodiment, the air intake deflector comprises a first shell, which is convex towards the mixer inlet; the air outlet flow guide device comprises a second shell, the second shell protrudes towards the outlet of the mixer, the lower portion of the second shell is attached to the lower portion of the first shell, and an opening communicated with the urea nozzle opening is formed in the upper portion of the second shell and the upper portion of the first shell.
Preferably, two U-shaped air inlets are opened at two sides of the upper end of the first shell.
Preferably, the first casing has a plurality of first through holes formed in a middle portion thereof, and the first casing has a plurality of second through holes formed in a lower portion thereof.
As a preferred embodiment, the upper part of the second shell is provided with a plurality of third through holes; two air outlet grooves which are convex outwards are symmetrically arranged on two sides of the lower portion of the second shell.
Preferably, the bottom of the air outlet groove is provided with an inclined plate, and the inclined plate is provided with a plurality of fourth through holes.
Preferably, the opening size of the first through hole and the second through hole is larger than the opening size of the third through hole.
The invention also provides a method for processing by using the post-processing packaged SCR mixer system, which comprises the following steps:
1) after being treated by the DPF particle trapping unit, the airflow with the discharged pollutants enters a mixer unit;
2) the air flow enters a U-shaped air inlet, a first through hole and a second through hole of the air inlet flow guide device and is fully mixed with the atomized urea solution sprayed from the urea nozzle opening;
3) and the gas flow mixed with the urea flows out of the SCR catalyst unit through the gas outlet flow guider and is discharged after being treated by the SCR catalyst unit.
Compared with the prior art, the method has the following beneficial effects:
firstly, the design of the mixer and the design of packaging are combined and unified, a flow field which is beneficial to rapid crushing, evaporation, hydrolysis and even distribution of the urea solution is formed by utilizing a spatial structure, the crushing and evaporation of urea droplets and the conversion of urea to ammonia are promoted, the risk of urea crystallization is reduced, the uniform distribution of ammonia and exhaust gas at an SCR inlet is realized, and the integral pressure of the mixer is reduced.
Secondly, the U-shaped air inlet, the first through hole and the second through hole are formed in the first shell of the air inlet flow guide device, so that air flow can be divided and converged in the flow guide mechanism, and evaporation of urea solution is promoted.
Thirdly, the lower part of the second shell of the air outlet flow guider is provided with two air outlet grooves protruding outwards, mixed components of exhaust and urea aqueous solution can be divided into two air flows, the air outlets are intersected to promote the evaporation of the urea aqueous solution, and NH in the mixed air is increased3And (4) uniformity of distribution.
Drawings
FIG. 1 is a schematic diagram of a high efficiency aftertreatment packaged SCR mixer system according to this embodiment;
FIG. 2 is an enlarged schematic view of the flow guide mechanism of FIG. 1;
FIG. 3 is a schematic view of an alternative embodiment of the deflector mechanism of FIG. 2;
FIG. 4 is a schematic view of an alternative angle of the deflector mechanism of FIG. 3;
in the figure: the device comprises a 1-DPF particle trapping unit, a 2-mixer unit, a 2.1-mixer cylinder, a 2.11-mixer inlet, a 2.12-mixer outlet, a 2.2-urea nozzle opening, a 2.3-diversion mechanism, a 2.31-air inlet diversion device, a 2.311-first shell, a 2.312-U-shaped air inlet, a 2.313-first through hole, an 2.314-second through hole, a 2.32-air outlet diversion device, a 2.321-second shell, a 2.322-third through hole, a 2.323-air outlet groove, a 2.324-inclined plate, a 2.325-fourth through hole, a 2.33-opening and a 3-SCR catalyst unit.
Detailed Description
The present invention will be described in further detail with reference to specific examples to facilitate the clear understanding of the invention, but the present invention is not limited thereto.
As shown in fig. 1, the high-efficiency aftertreatment packaged SCR mixer system of the embodiment includes a DPF particulate trap unit 1, a mixer unit 2, and an SCR catalyst unit 3, which are connected in sequence, where the mixer unit 2 includes a mixer cylinder 2.1, the mixer cylinder 2.1 has a mixer inlet 2.11 and a mixer outlet 2.12, the mixer inlet 2.11 is connected to an outlet of the DPF particulate trap unit 1, the mixer outlet 2.12 is connected to an inlet of the SCR catalyst unit 3, a urea nozzle port 2.2 is disposed at the top of the mixer cylinder 2.1, and a flow guide mechanism 2.3 is disposed in the mixer cylinder 2.1.
As shown in fig. 2, the guiding mechanism 2.3 includes an inlet guiding device 2.31 and an outlet guiding device 2.32, the inlet guiding device 2.31 is communicated with the mixer inlet 2.11, and the outlet guiding device 2.32 is communicated with the mixer outlet 2.12. Said inlet flow guide 2.31 comprises a first shell 2.311, said first shell 2.311 being convex towards the mixer inlet 2.11; the air outlet deflector 2.32 comprises a second housing 2.321, the second housing 2.321 is convex towards the mixer outlet 2.12, the lower part of the second housing 2.321 is arranged in fit with the lower part of the first housing 2.311, and the upper part of the second housing 2.321 and the upper part of the first housing 2.311 form an opening 2.33 communicated with the urea nozzle opening 2.2.
As shown in fig. 3 and 4, two U-shaped air inlets 2.312 are opened at two sides of the upper end of the first casing 2.311, a plurality of first through holes 2.313 are opened at the middle of the first casing 2.311, and preferably, two first through holes 2.313 are opened at the middle of the first casing 2.311, which are symmetrically arranged. The lower part of the first shell 2.311 is provided with a plurality of second through holes 2.314. Preferably, the lower portion of the first housing 2.311 is opened with two symmetrically arranged second through holes 2.314. Thus, the first shell 2.311 of the air inlet flow guide 2.31 is provided with the U-shaped air inlet 2.312, the first through hole 2.313 and the second through hole 2.314, so that air flow can be divided and converged in the flow guide mechanism to promote evaporation of the urea solution.
In the above technical solution, the upper portion of the second casing 2.321 is provided with a plurality of third through holes 2.322; two air outlet grooves 2.323 which are convex outwards are symmetrically arranged on two sides of the lower part of the second shell 2.321. The bottom of the gas outlet groove 2.323 is provided with an inclined plate 2.324, and the inclined plate 2.324 is provided with a plurality of fourth through holes 2.325. The opening sizes of the first through hole 2.313 and the second through hole 2.314 are larger than the opening size of the third through hole 2.322. Thus, the lower part of the second shell 2.321 is provided with two gas outlet grooves 2.323 protruding outwards, which can divide the mixed components of the exhaust gas and the urea aqueous solution into two gas flows, and the gas outlets are formed to be converged, so that the evaporation of the urea aqueous solution is promoted, and the NH in the mixed gas is increased3And (4) uniformity of distribution. Through being provided with a plurality of fourth through-hole 2.325 on inclined plate 2.324, through increasing the heat transfer, reach the purpose that promotes the evaporation of urea saying so the solution, reduce the crystallization risk.
The method for processing by utilizing the high-efficiency after-treatment packaged SCR mixer system comprises the following steps:
1) after being treated by the DPF particle trapping unit 1, the airflow with the discharged pollutants enters a mixer unit 2;
2) the airflow enters the air inlet fluid director 2.31 and is fully mixed with the atomized urea solution sprayed out from the urea nozzle opening 2.2;
3) the gas flow mixed with urea flows out of the SCR catalyst unit 3 through the gas outlet flow guider 2.32, and is finally discharged after being treated by the SCR catalyst unit 3.
The working principle of the invention is as follows:
exhaust gas flow direction:
the exhaust gas flows as shown in fig. 1, and the gas flow with the discharged pollutants passes through the DPF particle trapping unit 1 along the direction indicated by the arrow, passes through the inlet flow guide 2.31 of the mixer unit 2, flows to the bottom of the urea nozzle opening 2.2, then flows out of the mixer unit 2 through the outlet flow guide 2.32, and is discharged through the SCR catalyst unit 3.
(II) urea mixing process:
the air flow passes through the U-shaped air inlet 2.312, the first through hole 2.313 and the second through hole 2.314 on the air inlet flow guide 2.31, is fully mixed with the atomized urea solution sprayed from the urea nozzle opening 2.2, and then is discharged out of the mixer through the two convex air outlet grooves 2.323 of the air outlet flow guide 2.32.
The above description is only for the specific embodiments of the present invention, and it should be noted that the remaining detailed descriptions are related to the prior art, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the protection scope of the present invention.

Claims (9)

1. An efficient aftertreatment packaged SCR mixer system comprising a DPF particulate trapping unit (1), a mixer unit (2) and an SCR catalyst unit (3) connected in sequence, characterized in that: the mixer unit (2) comprises a mixer cylinder (2.1), the mixer cylinder (2.1) is provided with a mixer inlet (2.11) and a mixer outlet (2.12), the mixer inlet (2.11) is connected with an outlet of the DPF particle trapping unit (1), the mixer outlet (2.12) is connected with an inlet of the SCR catalyst unit (3), the top of the mixer cylinder (2.1) is provided with a urea nozzle opening (2.2), and a flow guide mechanism (2.3) is arranged in the mixer cylinder (2.1).
2. The high efficiency aftertreatment package SCR mixer system of claim 1, wherein: the diversion mechanism (2.3) comprises an air inlet diversion device (2.31) and an air outlet diversion device (2.32), the air inlet diversion device (2.31) is communicated with the mixer inlet (2.11), and the air outlet diversion device (2.32) is communicated with the mixer outlet (2.12).
3. The high efficiency aftertreatment package SCR mixer system of claim 2, wherein: the air intake deflector (2.31) comprises a first shell (2.311), the first shell (2.311) being convex towards the mixer inlet (2.11); the air outlet deflector (2.32) comprises a second shell (2.321), the second shell (2.321) protrudes towards the mixer outlet (2.12), the lower part of the second shell (2.321) is attached to the lower part of the first shell (2.311), and the upper part of the second shell (2.321) and the upper part of the first shell (2.311) form an opening (2.33) communicated with the urea nozzle opening (2.2).
4. The high efficiency aftertreatment package SCR mixer system of claim 3, wherein: two U-shaped air inlets (2.312) are formed in two sides of the upper end of the first shell (2.311).
5. The high efficiency aftertreatment package SCR mixer system of claim 4, wherein: the middle part of the first shell (2.311) is provided with a plurality of first through holes (2.313), and the lower part of the first shell (2.311) is provided with a plurality of second through holes (2.314).
6. The high efficiency aftertreatment package SCR mixer system of claim 5, wherein: the upper part of the second shell (2.321) is provided with a plurality of third through holes (2.322); two air outlet grooves (2.323) which are convex outwards are symmetrically arranged on two sides of the lower part of the second shell (2.321).
7. The high efficiency aftertreatment package SCR mixer system of claim 6, wherein: the bottom of the gas outlet groove (2.323) is provided with an inclined plate (2.324), and the inclined plate (2.324) is provided with a plurality of fourth through holes (2.325).
8. The high efficiency aftertreatment package SCR mixer system of claim 7, wherein: the opening sizes of the first through hole (2.313) and the second through hole (2.314) are larger than the opening size of the third through hole (2.322).
9. A method of processing using the high efficiency aftertreatment package SCR mixer system of claim 8, wherein: the method comprises the following steps:
1) after being treated by the DPF particle trapping unit (1), the airflow with the discharged pollutants enters a mixer unit (2);
2) the airflow enters an air inlet flow guider (2.31) and is fully mixed with the atomized urea solution sprayed out of the urea nozzle opening (2.2);
3) the gas flow mixed with the urea flows out of the SCR catalyst unit (3) through the gas outlet flow guider (2.32), and is finally discharged after being treated by the SCR catalyst unit (3).
CN202010605611.4A 2020-06-29 2020-06-29 Efficient post-treatment packaging SCR mixer system and treatment method thereof Active CN111764989B (en)

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Cited By (1)

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Publication number Priority date Publication date Assignee Title
CN115382412A (en) * 2022-08-02 2022-11-25 浙江邦得利环保科技股份有限公司 High-efficiency mixer

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JP2018115596A (en) * 2017-01-18 2018-07-26 いすゞ自動車株式会社 Exhaust emission control system
CN208122922U (en) * 2018-04-19 2018-11-20 凯德斯环保科技（苏州）有限公司 SCR urea mixer
CN109989810A (en) * 2017-12-29 2019-07-09 天纳克（苏州）排放系统有限公司 Exhaust aftertreatment mixing arrangement and its encapsulation
CN110578581A (en) * 2019-09-30 2019-12-17 潍柴动力股份有限公司 SCR aftertreatment device and air inlet mixing device thereof
CN212337411U (en) * 2020-06-29 2021-01-12 东风商用车有限公司 Efficient aftertreatment packaged SCR mixer system

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009112891A (en) * 2007-11-02 2009-05-28 Hitachi High-Technologies Corp Fluid mixer
JP2018115596A (en) * 2017-01-18 2018-07-26 いすゞ自動車株式会社 Exhaust emission control system
CN108005763A (en) * 2017-12-28 2018-05-08 无锡锡创汽车环保有限公司 urea cyclone mixer
CN109989810A (en) * 2017-12-29 2019-07-09 天纳克（苏州）排放系统有限公司 Exhaust aftertreatment mixing arrangement and its encapsulation
CN208122922U (en) * 2018-04-19 2018-11-20 凯德斯环保科技（苏州）有限公司 SCR urea mixer
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CN212337411U (en) * 2020-06-29 2021-01-12 东风商用车有限公司 Efficient aftertreatment packaged SCR mixer system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115382412A (en) * 2022-08-02 2022-11-25 浙江邦得利环保科技股份有限公司 High-efficiency mixer
CN115382412B (en) * 2022-08-02 2024-04-09 浙江邦得利环保科技股份有限公司 Efficient mixer

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