CN115013128B - SCR mixer and SCR system - Google Patents
SCR mixer and SCR system Download PDFInfo
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- CN115013128B CN115013128B CN202210947337.8A CN202210947337A CN115013128B CN 115013128 B CN115013128 B CN 115013128B CN 202210947337 A CN202210947337 A CN 202210947337A CN 115013128 B CN115013128 B CN 115013128B
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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
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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
- F01N3/18—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]
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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
- F01N2610/00—Adding substances to exhaust gases
- F01N2610/02—Adding substances to exhaust gases the substance being ammonia or urea
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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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
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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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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust Gas After Treatment (AREA)
Abstract
The invention discloses an SCR mixer and SCThe R system belongs to the technical field of diesel engines, and the SCR mixer comprises a first C-shaped baffle, a second C-shaped baffle and an air outlet baffle; the first C-shaped baffle and the second C-shaped baffle are symmetrically arranged in a left-right mode in a mode that the openings are opposite, and a mixing cavity is formed between the first C-shaped baffle and the second C-shaped baffle; a front opening communicated with the mixing cavity is formed between the front side edges of the first C-shaped baffle and the second C-shaped baffle, and a rear opening communicated with the mixing cavity is formed between the rear side edges of the first C-shaped baffle and the second C-shaped baffle; the air outlet baffle is arc-shaped and is positioned at the rear side of the rear opening, and a cavity which is communicated with the rear opening from the left side to the right side of the front side is formed between the air outlet baffle and the first C-shaped baffle and between the air outlet baffle and the second C-shaped baffle. The mixer can ensure that the reducing agent liquid drops have enough time and conditions to be fully mixed with the waste gas and be evaporated and decomposed in the mixing cavity, thereby improving the NH content of the aftertreatment system 3 Mixing uniformity and anti-crystallization performance.
Description
Technical Field
The invention relates to the technical field of diesel engines, in particular to an SCR mixer in an exhaust system of a diesel engine. The invention also relates to an SCR system provided with said SCR mixer.
Background
The basic principle of SCR (selective catalytic reduction) technology is to inject fuel oil into exhaust gas or add other reducing agents (ammonia, urea, hydrocarbon and the like), select proper catalysts, promote the reaction of the reducing agents and NOx, and selectively remove NO in the smoke x Reduction to non-toxic N 2 And H 2 O while suppressing oxidation of the reducing agent by oxygen in the exhaust gas.
The existing SCR technology can be classified into NH generated by decomposition of urea according to the kind of the reducing agent 3 Urea SCR technology as a reducing agent and hydrocarbon SCR technology with hydrocarbon as a reducing agent. The current technology of hydrocarbon SCR is still furtherIn the research, the practical application is not much, and the urea SCR technology is mature and the practical application is more. Before the actual SCR reaction begins, urea is firstly generated into ammonia, urea aqueous solution is sprayed into an exhaust pipe in a micro-droplet form through a nozzle, and moisture in exhaust gas with higher temperature is evaporated to generate granular urea CO (NH) 2 ) 2 . When the temperature is higher than 180 ℃, the urea is subjected to a pyrolysis reaction to generate isocyanic acid (HNCO) and a part of NH 3 Subsequently, the isocyanate produced by pyrolysis undergoes a hydrolysis reaction to produce a portion of NH 3 And CO 2 ，NH 3 SCR using NH generated by urea decomposition in the exhaust gases 3 To select catalytic NO x 。
The urea SCR system mainly comprises a catalyst, a urea injection pump, a urea box, an injection control unit, a mixer, a urea aqueous solution temperature and liquid level sensor, a urea aqueous solution quality sensor, an exhaust temperature sensor and NO x Sensor and NH 3 Sensors, etc. The problem that deposits such as urea crystal stones are easily generated when diesel vehicles of the SCR system operate under low-load conditions is always a main factor influencing the stable operation of the vehicles. During the running process of the vehicle, the sprayed urea liquid drops cannot be converted into NH in real time due to poor urea atomization, uneven mixing or insufficient decomposition 3 But by-products, which lead to instability of the reduction reaction and thus to NO x Consistency of emissions and conversion efficiency. The urea sediment can be divided into urea crystal and urea calculus according to the forming process, the urea crystal is supersaturated due to the loss of water in the urea solution, and the urea is precipitated and generated as a product in the physical reaction process and can be continuously decomposed along with the rise of the temperature; the urea calculus is caused by a by-product generated by a side reaction in the urea decomposition process, belongs to a chemical reaction product, and can be decomposed only by high temperature. Because the mass of urea liquid drops is much larger than that of gas, crystals formed in the gas flow stagnation area are remained and grow continuously by taking the crystals as pronuclei if the crystals cannot be decomposed completely in time, and urea crystal stones are formed finally due to incomplete decomposition and are accumulated to a certain extent to block a urea flow channel.
Disclosure of Invention
The present invention is directed to an SCR mixer to solve the above technical problems.
Another object of the present invention is to provide an SCR system provided with the SCR mixer.
In order to achieve the above object, the present invention provides an SCR mixer, comprising a first C-shaped baffle, a second C-shaped baffle, and an outlet baffle; the first C-shaped baffle and the second C-shaped baffle are symmetrically arranged in a left-right mode in a mode that the openings are opposite, and a mixing cavity is formed between the first C-shaped baffle and the second C-shaped baffle; a front opening communicated with the mixing cavity is formed between the front side edges of the first C-shaped baffle and the second C-shaped baffle, and a rear opening communicated with the mixing cavity is formed between the rear side edges of the first C-shaped baffle and the second C-shaped baffle; the air outlet baffle is arc-shaped and is positioned at the rear side of the rear opening, and a cavity which is communicated with the rear opening from the left side to the right side of the front side is formed between the air outlet baffle and the first C-shaped baffle and between the air outlet baffle and the second C-shaped baffle.
Optionally, the rear side of the air outlet baffle is provided with a baffle with an arc-shaped hole.
Optionally, the baffle with the arc-shaped holes is circular, and a plurality of concentric arc-shaped holes are formed in the baffle.
Optionally, the arc-shaped holes are distributed on the baffle plate with the arc-shaped holes in a left-right symmetrical mode.
Optionally, the length of the arc-shaped hole decreases from outer ring to inner ring layer by layer.
Optionally, the outer side hole wall of the arc-shaped hole at the innermost circle is an arc-shaped wall, and the inner side hole wall is a vertical straight wall.
Optionally, the left upper corner and the right upper corner of the baffle plate with the arc-shaped holes are respectively provided with vent holes distributed in a lattice form.
Optionally, the vent holes substantially occupy a right triangle area at the upper left and right corners of the curved hole baffle.
Optionally, through holes distributed in a dot matrix form are respectively arranged on the plate bodies on two sides of the opening of the first C-shaped baffle and the second C-shaped baffle.
In order to achieve the other object, the invention further provides an SCR system, which comprises a catalyst and a mixer located at the upstream of the catalyst, wherein the mixer is the SCR mixer described in any one of the above, and the SCR mixer is provided with a reducing agent injection port above a mixing cavity of the SCR mixer.
The SCR mixer provided by the invention is provided with the first C-shaped baffle and the second C-shaped baffle, the mixing cavity is formed between the two C-shaped baffles, airflow can enter the mixing cavity through the front opening and the rear opening, the airflow can rotate at high speed under the action of the double C-shaped structure when passing through the mixing cavity to form four uniformly distributed rotational flows, and under the action of the rotational flows, the liquid drops of the reducing agent have enough time and conditions to be fully mixed with waste gas and subjected to evaporative decomposition in the originally limited mixing space, so that the NH of an aftertreatment system is improved 3 Mixing uniformity and anti-crystallization performance.
In a preferred scheme, the baffle with the arc-shaped holes at the rear side of the air outlet baffle can guide the flow direction of the mixed air flowing out of the mixing cavity, so that NH (nitrogen) before SCR (Selective catalytic reduction) is further improved 3 The mixing uniformity improves the SCR conversion efficiency, and can effectively reduce the pressure loss and improve the economic performance of the mixer.
The SCR system provided by the invention is provided with the SCR mixer, and the SCR mixer has the technical effects, so the SCR system provided with the SCR mixer also has the corresponding technical effects.
Drawings
Fig. 1 is a schematic diagram of an internal structure of an SCR mixer according to an embodiment of the present invention;
FIG. 2 is a schematic structural view of the baffle plate with arcuate apertures shown in FIG. 1;
FIG. 3 is a simulated flow chart of four evenly distributed rotational flows formed by airflow in a mixing chamber;
FIG. 4 shows NH at the inlet of the SCR without the baffle with the arc-shaped hole 3 A uniformity simulation chart;
FIG. 5 shows NH at the inlet of the SCR device when the baffle with the arc-shaped holes is arranged 3 A uniformity simulation chart;
fig. 6 is a schematic partial structure diagram of an SCR system according to an embodiment of the present invention.
In the figure:
1. the first C-shaped baffle 2, the second C-shaped baffle 3, the air outlet baffle 4, the baffle with arc holes 41, the arc holes 42, the vent holes 5, the mixing chamber 6, the front opening 7, the rear opening 8, the through hole 9, the cavity 10 and the catalytic converter.
Detailed Description
In order that those skilled in the art will better understand the disclosure, the invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
In this specification, terms such as "upper, lower, inner, and outer" are established based on positional relationships shown in the drawings, and the corresponding positional relationships may vary depending on the drawings, and therefore, the terms are not to be construed as absolutely limiting the scope of protection; moreover, relational terms such as "first" and "second," and the like, may be used solely to distinguish one element from another element having the same name, and do not necessarily require or imply any actual relationship or order between such elements.
Referring to fig. 1, fig. 1 is a schematic diagram of an internal structure of an SCR mixer according to an embodiment of the present invention.
In a specific embodiment, the SCR mixer provided by the present invention mainly comprises a first C-shaped baffle 1, a second C-shaped baffle 2, an air outlet baffle 3, and a baffle with arc holes 4, which can be installed together in a housing.
The first C-shaped baffle 1 and the second C-shaped baffle 2 are approximately C-shaped in cross section, the first C-shaped baffle 1 and the second C-shaped baffle 2 are symmetrically arranged in a left-right mode in a mode of opposite openings, and a mixing cavity 5 is formed between the first C-shaped baffle 1 and the second C-shaped baffle 2; a front opening 6 leading into the mixing cavity 5 is formed between the front side edges of the first C-shaped baffle plate 1 and the second C-shaped baffle plate 2, and a rear opening 7 communicated with the mixing cavity 5 is formed between the rear side edges of the first C-shaped baffle plate 1 and the second C-shaped baffle plate 2.
The first C-shaped baffle 1 and the second C-shaped baffle 2 are respectively provided with through holes 8 which are densely distributed in a lattice form on the plate body at the two sides of the opening. When the air flows through, most of the air flow enters the mixing cavity 5 from the front opening 6 and the rear opening 7, and a small part of the air flow enters the mixing cavity 5 from the through holes 8 at two sides of the front opening 6 and the rear opening 7, so that the rotational flow is better formed.
The air outlet baffle 3 is arc-shaped and is positioned at the rear side of the rear opening 7, a certain distance is kept between the air outlet baffle 3 and the first C-shaped baffle 1 and the second C-shaped baffle 2, and the first C-shaped baffle 1 and the second C-shaped baffle 2 are wrapped from the rear side, so that a cavity 9 which is communicated with the rear opening 7 from the left side and the right side of the front side is formed.
Referring to fig. 2, fig. 2 is a schematic structural view of the baffle with arc-shaped holes shown in fig. 1.
The baffle 4 with the arc-shaped holes is generally circular and is positioned at the rear side of the air outlet baffle 3, the middle part of the baffle 4 with the arc-shaped holes is protruded forwards, one surface of the baffle facing the air flow is an arc surface, three arc-shaped holes 41 with the same center of circle are arranged on the baffle 4 with the arc-shaped holes, the three arc-shaped holes 41 are distributed on the baffle 4 with the arc-shaped holes in a bilateral symmetry mode, the length of each arc-shaped hole 41 is reduced from the outer ring to the inner ring layer by layer, the size of each arc-shaped hole 41 in the outer ring is longer, the size of each arc-shaped hole 41 in the inner ring is shorter, the arc-shaped hole 41 in the innermost ring is closest to the center of circle, and the structural space at the center of circle is limited, so that the hole wall at the outer side of the baffle is an arc-shaped wall, and the hole wall at the inner side of the baffle is a vertical straight wall.
In addition, the left upper corner and the right upper corner of the baffle plate with arc holes 4 are respectively provided with vent holes 42 distributed in a lattice form, and the two vent holes 42 substantially occupy right triangle areas at the left upper corner and the right upper corner of the baffle plate with arc holes 4.
When the device works, one part of engine exhaust gas enters the mixing cavity 5 from the front opening 6 of the first C-shaped baffle 1 and the second C-shaped baffle 2, the other part of the engine exhaust gas enters the mixing cavity 5 from the rear opening 7 along the cavity 9 between the first C-shaped baffle 1 and the second C-shaped baffle 2 and the air outlet baffle 3, the urea solution is sprayed by the urea nozzle and then mixed with the exhaust gas to form mixed gas, as shown in a simulated flow diagram of figure 3, the mixed gas flow forms four uniformly distributed rotating gas flows (respectively a first rotational flow A, a second rotational flow B, a third rotational flow C and a fourth rotational flow D) under the action of the double C-shaped baffles to wrap urea liquid drops to flow downwards in a rotating manner, so that the urea solution and the exhaust gas are fully mixed and evaporated and decomposed, and NH is improved 3 Uniformity of mixing.
NH of catalyst inlet 10 if no curved orifice baffle 4 is added 3 Uniformity as shown in fig. 4, after the baffle 4 with arc holes is arranged in front of the catalyst 10, under the guiding action of the baffle 4 with arc holes, the NH at the inlet of the catalyst 10 3 The mixing uniformity was significantly improved as shown in fig. 5. In addition, the first C-shaped baffle 1 and the second C-shaped baffle 2 which are provided with the through holes and the baffle 4 with the arc-shaped holes can effectively reduce pressure loss and improve the economic performance of the mixer.
The above embodiments are merely preferred embodiments of the present invention, and are not limited thereto, and on the basis of the above embodiments, various embodiments can be obtained by performing targeted adjustment according to actual needs. For example, in the baffle 4 with arc-shaped holes, the number of the arc-shaped holes 41 is further increased or decreased, and so on. This is not illustrated here, since many implementations are possible.
The mixer can enable the mixed gas to form four uniformly distributed rotating air flows to wrap urea liquid drops to flow downwards in a rotating mode under the action of the double-C-shaped baffle, so that the urea solution and the waste gas are fully mixed and are evaporated and decomposed, and NH is increased 3 The mixing uniformity is improved, and NH at the inlet of the catalytic converter can be obviously improved by the baffle 4 with the arc-shaped holes 3 The mixing uniformity is improved, and the NH content of the post-treatment system is improved 3 Mixing uniformity and crystallization resistance, and reducing pressure loss.
In addition, the modular design of the structure can be realized, the engine-driven generator is applied to engines with different discharge capacities, relevant structures are reasonably adjusted according to post-processing of different specifications, perfect matching with the engines is realized, a complex connection mounting structure is not needed, the reliability is high, and post-processing packaging arrangement is simpler.
In addition to the SCR mixer described above, the present invention also provides an SCR system comprising a catalyst 10 and a mixer located upstream of the catalyst, wherein the mixer is the SCR mixer described above, which is arranged in front of the inlet of the catalyst 10 and is provided with a reducing agent injection port above the mixing chamber 5, and the reducing agent used may specifically be urea or the like.
The SCR mixer and the SCR system provided by the present invention are described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the core concepts of the present invention. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (10)
1. An SCR mixer is characterized by comprising a first C-shaped baffle (1), a second C-shaped baffle (2) and an air outlet baffle (3); the first C-shaped baffle (1) and the second C-shaped baffle (2) are symmetrically arranged in a left-right mode in a mode that openings are opposite, and a mixing cavity (5) is formed between the first C-shaped baffle and the second C-shaped baffle; a front opening (6) communicated with the mixing cavity (5) is formed between the front side edges of the first C-shaped baffle (1) and the second C-shaped baffle (2), and a rear opening (7) communicated with the mixing cavity (5) is formed between the rear side edges of the first C-shaped baffle (1) and the second C-shaped baffle (2); the baffle (3) of giving vent to anger is the arc and is located the rear side of rear opening (7), give vent to anger baffle (3) with form between first C shape baffle (1) and the second C shape baffle (2) and lead to about leading to from the front side cavity (9) of rear opening (7), the air current can get into mixing chamber (5) through front opening (6) and rear opening (7), is in when the air current passes through mixing chamber (5) can high-speed rotation under the effect of first C shape baffle (1) and second C shape baffle (2), forms four equipartition whirl.
2. An SCR mixer according to claim 1, characterised in that the rear side of the outlet baffle (3) is provided with an arc-shaped perforated baffle (4).
3. An SCR mixer according to claim 2, characterised in that the baffle (4) is circular and is provided with a plurality of concentric circular holes (41).
4. -SCR mixer according to claim 3, characterised in that the curved holes (41) are distributed in a bilaterally symmetrical manner on the baffle plate (4) with curved holes.
5. SCR mixer according to claim 4, wherein the arc-shaped holes (41) decrease in length from outer ring to inner ring layer by layer.
6. SCR mixer according to claim 5, wherein the outer wall of the arc-shaped holes (41) of the innermost circle is an arc-shaped wall and the inner wall of the arc-shaped holes is a vertical straight wall.
7. SCR mixer according to claim 4, characterized in that the baffle plate (4) with arc holes is provided with ventilation holes (42) distributed in a lattice pattern in the upper left and right corner areas, respectively.
8. An SCR mixer according to claim 7, characterized in that the ventilation holes (42) substantially occupy a right-angled triangular area at the upper left and right corners of the curved perforated baffle plate (4).
9. The SCR mixer according to claim 1, wherein the first C-shaped baffle (1) and the second C-shaped baffle (2) are provided with through holes (8) distributed in a lattice pattern on the plate body on both sides of the opening thereof, respectively.
10. An SCR system comprising a catalyst and a mixer upstream of the catalyst, characterized in that the mixer is an SCR mixer according to any one of claims 1 to 9, which SCR mixer is provided with a reducing agent injection orifice above its mixing chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210947337.8A CN115013128B (en) | 2022-08-09 | 2022-08-09 | SCR mixer and SCR system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210947337.8A CN115013128B (en) | 2022-08-09 | 2022-08-09 | SCR mixer and SCR system |
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| Publication Number | Publication Date |
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| CN115013128A CN115013128A (en) | 2022-09-06 |
| CN115013128B true CN115013128B (en) | 2023-03-21 |
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| CN202210947337.8A Active CN115013128B (en) | 2022-08-09 | 2022-08-09 | SCR mixer and SCR system |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103998133A (en) * | 2011-12-12 | 2014-08-20 | 环球油品公司 | Process and apparatus for mixing two streams of catalyst |
| CN109386355A (en) * | 2017-08-14 | 2019-02-26 | 波森公司 | Mixer apparatus and waste gas system |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6053096B2 (en) * | 2012-01-12 | 2016-12-27 | 日野自動車株式会社 | Exhaust purification device |
| DE112013000014B4 (en) * | 2013-01-17 | 2021-04-15 | Komatsu Ltd. | Mixing device for an aqueous reducing agent solution and exhaust gas aftertreatment device provided with the same |
| CN107575287B (en) * | 2017-09-19 | 2019-07-23 | 天纳克（苏州）排放系统有限公司 | Exhaust aftertreatment mixing arrangement |
| CN109707491A (en) * | 2019-03-07 | 2019-05-03 | 广西玉柴机器股份有限公司 | The mixer of spraying system |
| CN210858884U (en) * | 2019-11-26 | 2020-06-26 | 无锡亿利环保科技有限公司 | Tail gas aftertreatment mixing arrangement |
| CN112012814B (en) * | 2020-08-18 | 2022-05-20 | 无锡威孚力达催化净化器有限责任公司 | Mixing device for spraying at upper end of U-shaped end cover |
| CN216406939U (en) * | 2021-11-10 | 2022-04-29 | 东风商用车有限公司 | Cartridge aftertreatment SCR mixer adapted for vertical arrangement |
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- 2022-08-09 CN CN202210947337.8A patent/CN115013128B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103998133A (en) * | 2011-12-12 | 2014-08-20 | 环球油品公司 | Process and apparatus for mixing two streams of catalyst |
| CN109386355A (en) * | 2017-08-14 | 2019-02-26 | 波森公司 | Mixer apparatus and waste gas system |
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| CN115013128A (en) | 2022-09-06 |
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