CN102116187A - Catalytic converter for tail gas treatment of diesel engine - Google Patents
Catalytic converter for tail gas treatment of diesel engine Download PDFInfo
- Publication number
- CN102116187A CN102116187A CN2011100706444A CN201110070644A CN102116187A CN 102116187 A CN102116187 A CN 102116187A CN 2011100706444 A CN2011100706444 A CN 2011100706444A CN 201110070644 A CN201110070644 A CN 201110070644A CN 102116187 A CN102116187 A CN 102116187A
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- China
- Prior art keywords
- catalyst carrier
- catalytic converter
- diesel engine
- arms
- inlet cavity
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Abstract
The invention discloses a catalytic converter device for tail gas treatment of a diesel engine, which comprises a catalyst carrier component, a gas inlet cavity and a gas outlet cavity. The gas inlet cavity and the gas outlet cavity are connected at the front end and the back end of the catalyst carrier component respectively. Tail gas of an engine is averagely distributed through three branch pipes and enters into a catalyst, the catalyst carrier component is formed by connecting three groups of components in parallel, and each group of the component is formed by connecting two catalyst carrier devices in series. Three gas flows formed after passing through a catalyst carrier are further converted into one flow through the three branch pipes, the gas outlet cavity is formed, and the flow is exhausted to the atmosphere. As for the catalytic converter, the catalyst carrier is convenient to replace, detach and mount. Flow analysis and acoustic analysis prove that the catalytic converter device has the advantages and the characteristics of good flow property and appropriate pressure loss, and has a certain silencing role.
Description
Technical field
Patent of the present invention relates to diesel exhaust aftertreatment system field, relates to the catalyst converter that diesel engine vent gas is handled in particular.
Background technique
Diesel engine is all having remarkable advantages than petrol engine aspect power character, Economy and the reliability, particularly CO
2Discharge lowly, its purposes expands on all kinds of vehicles gradually.But it is nitrogen oxide (NO that there is maximum problem in diesel engine
x) and particulate matter (PM) discharging seriously.Along with Chinese emission control regulations are more and more tighter, and homemade diesel engine performance and oil product problem, depend the emission controls by improving combustion measure alone and seem unable to do what one wishes, therefore be necessary to take the outer after-treatment device of machine to reach emissions object.
Diesel motor exhaust selective catalytic reduction technology (SCR) is the outer post-processing technology of a kind of machine of vehicle diesel engine, can effectively improve diesel engine NO
xDischarging, and insensitive to the diesel oil sulphur content.This technology is by spraying into certain density urea liquid, the NH that produces after pyrolysis (reaction 1) and hydrolysis (reaction 2) in outlet pipe
3And NO
xReduction reaction (reaction 3-5) takes place in catalytic converter, with NO
xBe converted into H
2O and N
2
(NH
2)
2CO→NH
3+HNCO (1)
H
2O+HNCO→NH
3+CO
2 (2)
4NO+4NH
3+O
2→4N
2+6H
2O (3)
2NH
3+NO+NO
2→2N
2+3H
2O (4)
6NO
2+8NH
3→7N
2+12H
2O (5)
For the main evaluation index of the catalytic converter that is used for the diesel engine vent gas processing, can estimate by following index:
1, the distribution of fluid between each catalyst carrier and the flow uniformity value of each catalyst carrier front-end face.
Improve the mass flow distribution of tail gas between each catalyst carrier, help improving the utilization ratio of carried catalyst, improve the transformation efficiency of catalyzer; Help reducing the pressure loss of air-flow on catalyst carrier; Help catalyst carrier and reach initiation temperature faster.
2, the pressure loss of system
A part of whole vent systems during the pressure loss of catalytic converter, the pressure loss that reduces catalytic converter helps reducing the back pressure of vent systems, thereby helps improving the performance of motor.
3, air speed
The size of air speed has been reacted the waiting time of air-flow on catalyst carrier.Air speed is more little, and the waiting time of air-flow in catalyst carrier is long more, and transformation efficiency is just high more.
4, acoustic insertion loss
Summary of the invention
Purpose of the present invention is to provide a kind of good flowing properties, crushing moderate, and has noise elimination function, is used for the catalytic converter that diesel engine vent gas is handled.
For realizing above purpose, the technological scheme that this patent adopts is:
A kind of catalytic converter that is used for the diesel engine vent gas processing, comprise catalyst carrier assembly, air-inlet cavity and outlet chamber, it is characterized in that described air-inlet cavity comprises an engine exhaust pipe, three arms and three centrum pipes, described three arm front ends are connected with the rear end of described engine exhaust pipe, and three rear ends of described three arms are connected with described three centrums pipe respectively; Described outlet chamber comprises three centrum pipes, three arms and a catalyzer outlet pipe, the rear end of described three centrum pipes is connected with three front ends of described three arms respectively, and the rear end of described three arms is connected with the front end of described catalyzer outlet pipe; Described catalyst carrier assembly is made of 3 groups of assembly parallel connections that are arranged side by side, and the rear and front end of every group of assembly is connected with the front end of the centrum pipe of the rear end of the centrum pipe of described air-inlet cavity and described outlet chamber respectively correspondingly.
According to the present invention, described three groups of catalyst carrier assemblies were inwardly evenly arranged in 360 degree weeks.
According to the present invention, every group of catalyst carrier assembly is made of two catalyst support assembly series connection, and described two catalyst support assemblies connect by flange; Described each catalyst support assembly comprises catalyst carrier, is coated on the outer liner of catalyst carrier and is coated on the outer housing of liner.Housing and liner can be protected and the clamping catalyst carrier, prevent that catalyst carrier lost efficacy at work.
According to the present invention, described each catalyst support assembly is cylindrical structural, is provided with many parallel channels that run through both ends of the surface in the described catalyst carrier vertically, and the internal surface of each passage is provided with catalyst coat, plays catalysis.
According to the present invention, adopt flange to connect between described catalyst carrier assembly and the described air-inlet cavity, adopt flange to connect between described catalyst carrier assembly and the described outlet chamber, and whole catalytic converter is by described two flange horizontal fixed.
According to the present invention, three arms of described air-inlet cavity adopt flange to be connected with the centrum pipe of described engine exhaust pipe and air-inlet cavity respectively.
According to the present invention, three arms of described outlet chamber adopt flange to be connected with the catalyzer outlet pipe with the centrum pipe of described outlet chamber respectively.
According to the present invention, described air-inlet cavity and outlet chamber symmetrical configuration.
A kind of catalytic converter that diesel engine vent gas is handled that is used for of the present invention, adopt the air-inlet cavity and the outlet chamber of three arms and three centrum tubular constructions, in conjunction with three groups of catalyst carrier kit forms, be divided into three tributaries after making air-flow in the engine exhaust pipe enter three arms of air-inlet cavity, these three streams are arranged to atmosphere at last again through three arms of outlet chamber and become an air-flow after by catalyst carrier.The present invention has good flowing properties, moderate advantage and the characteristics of crushing, and has the effect of certain noise elimination.
The present invention is by flow analysis and acoustic analysis data display, under the constant engine operating mode, and rated flow 5873kg/h, under 380 ℃ of the rated temperatures, crushing is less than 12kPa, and the velocity uniformity on three catalyst inlet faces is greater than 0.96.Under the declared working condition, because rated speed is lower, insertion is lost in about 8dB.As seen, above-mentioned technique effect is able to abundant checking through flow analysis and acoustic analysis demonstration.
Description of drawings
Fig. 1 is a kind of overall structure schematic representation that is used for the catalytic converter of diesel engine vent gas processing of the present invention.
Fig. 2 is the plan view of Fig. 1.
Fig. 3 is the structural representation of one group of catalyst carrier assembly of the present invention.
Fig. 4 is the cross-sectional view of catalyst support assembly.
Wherein: the 1-adpting flange; The 2-waste pipe; The 3-adpting flange; 4-air-inlet cavity three arms; 5-air-inlet cavity three arm adpting flanges; 6-air-inlet cavity centrum pipe; 7-catalyst carrier assembly adpting flange; 8-catalyst carrier assembly; 9-catalyst carrier assembly adpting flange; 10-outlet chamber centrum pipe; 11-outlet chamber three arm adpting flanges; 12-outlet chamber three arms; The 13-adpting flange; 14-catalyzer outlet pipe; The 15-adpting flange; The 16-air-inlet cavity; The 17-outlet chamber; 71,72-catalyst support assembly; 712,722-catalyst support assembly housing; 713,723-catalyst support assembly liner; 714,724-catalyst carrier; 715,721-flange; 716, the axial passage on the 726-catalyst carrier.
Embodiment
Referring to Fig. 1 and Fig. 2, a kind of catalytic converter that is used for the diesel engine vent gas processing comprises catalyst carrier assembly 8, air-inlet cavity 16 and outlet chamber 17.Described air-inlet cavity 16 comprises an engine exhaust pipe 2, three arms 4 and three centrums pipes 6, described three arms, 4 front ends are connected with the rear end of described engine exhaust pipe 2 by flange 3, and three rear ends of described three arms 4 are connected with described three centrums pipe 6 by flange 5 respectively; Described outlet chamber 17 comprises three centrum 12, one three arms 10 of pipe and a catalyzer outlet pipe 14, the rear end of described three centrums pipe 12 is connected with three front ends of described three arms 10 by flange 11 respectively, and the rear end of described three arms 10 is connected with the front end of described catalyzer outlet pipe 14 by flange 13; Described catalyst carrier assembly 8 is made of 3 groups of assembly parallel connections that are arranged side by side, and the rear and front end of every group of assembly is connected with the front end of the centrum pipe 12 of the rear end of the centrum of described air-inlet cavity 16 pipe 6 and described outlet chamber 17 with 9 correspondingly by flange 7 respectively.
Whole catalytic converter is by flange 7 and 9 horizontal fixed.
Referring to Fig. 3, every group of catalyst carrier assembly 8 is made of 71,72 series connection of two catalyst support assemblies, connects by flange 715,721 between described two catalyst support assemblies 71,72; Described each catalyst support assembly 71,72 comprises catalyst carrier 714,724, is coated on the outer liner 713,723 of catalyst carrier and is coated on the outer housing 712,722 of liner.Described each catalyst support assembly 71,72 is cylindrical structural, is provided with many parallel channels 716,726 that run through both ends of the surface in the described catalyst carrier 714,724 vertically, and the internal surface coated catalysts coating of each passage plays catalysis.Housing and liner can be protected and the clamping catalyst carrier, prevent that catalyst carrier lost efficacy at work.
A kind of catalytic converter that is used for the diesel engine vent gas processing of the present invention shows that it has good flowing properties, moderate advantage and the characteristics of crushing, and has certain noise elimination effect through flow analysis and acoustic analysis demonstration.
Claims (8)
1. one kind is used for the catalytic converter that diesel engine vent gas is handled, comprise catalyst carrier assembly (8), air-inlet cavity (16) and outlet chamber (17), it is characterized in that described air-inlet cavity (16) comprises an engine exhaust pipe (2), three arms (4) and three centrum pipes (6), described three arms (4) front end is connected with the rear end of described engine exhaust pipe (2), and three rear ends of described three arms (4) are connected with described three centrums pipes (6) respectively; Described outlet chamber (17) comprises three centrum pipes (12), three arms (10) and catalyzer outlet pipes (14), the rear end of described three centrums pipes (12) is connected with three front ends of described three arms (10) respectively, and the rear end of described three arms (10) is connected with the front end of described catalyzer outlet pipe (14); Described catalyst carrier assembly (8) is made of 3 groups of assembly parallel connections that are arranged side by side, and the rear and front end of every group of assembly is connected with the front end of the centrum pipe (12) of the rear end of the centrum pipe (6) of described air-inlet cavity (16) and described outlet chamber (17) respectively correspondingly.
2. a kind of catalytic converter that diesel engine vent gas is handled that is used for as claimed in claim 1 is characterized in that described three groups of catalyst carrier assemblies (8) are inwardly even layout of 360 degree weeks.
3. a kind of catalytic converter that diesel engine vent gas is handled that is used for as claimed in claim 2, it is characterized in that every group of catalyst carrier assembly (8) is made of two catalyst support assemblies (71,72) series connection, described two catalyst support assemblies (71,72) connect by flange (715,721); Described each catalyst support assembly (71,72) comprises catalyst carrier (714,724), is coated on the outer liner (713,723) of catalyst carrier and is coated on the outer housing (712,722) of liner.
4. a kind of catalytic converter that diesel engine vent gas is handled that is used for as claimed in claim 3, it is characterized in that described each catalyst support assembly (71,72) is cylindrical structural, be provided with many parallel channels (716,726) that run through both ends of the surface in the described catalyst carrier (714,724) vertically, the internal surface of each passage is provided with catalyst coat.
5. a kind of catalytic converter that diesel engine vent gas is handled that is used for as claimed in claim 1, it is characterized in that adopting between described catalyst carrier assembly (8) and the described air-inlet cavity (16) flange (7) to connect, adopt flange (9) to connect between described catalyst carrier assembly (8) and the described outlet chamber (17), and whole catalytic converter is by described two flanges (7,9) horizontal fixed.
6. a kind of catalytic converter that diesel engine vent gas is handled that is used for as claimed in claim 1 is characterized in that three arms (4) of described air-inlet cavity adopt flange (3,5) to be connected with the centrum pipe (6) of described engine exhaust pipe (2) and air-inlet cavity respectively.
7. a kind of catalytic converter that diesel engine vent gas is handled that is used for as claimed in claim 1 is characterized in that three arms (10) of described outlet chamber adopt flange (11,13) to be connected with catalyzer outlet pipe (14) with the centrum pipe (12) of described outlet chamber respectively.
8. as any one described a kind of catalytic converter that diesel engine vent gas is handled that is used for of claim 1-7, it is characterized in that described air-inlet cavity (16) and outlet chamber (17) symmetrical configuration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100706444A CN102116187A (en) | 2011-03-22 | 2011-03-22 | Catalytic converter for tail gas treatment of diesel engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100706444A CN102116187A (en) | 2011-03-22 | 2011-03-22 | Catalytic converter for tail gas treatment of diesel engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102116187A true CN102116187A (en) | 2011-07-06 |
Family
ID=44215097
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011100706444A Pending CN102116187A (en) | 2011-03-22 | 2011-03-22 | Catalytic converter for tail gas treatment of diesel engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102116187A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104968911A (en) * | 2013-08-01 | 2015-10-07 | 宫下美智子 | Exhaust gas purification system |
| US11105237B2 (en) * | 2019-02-27 | 2021-08-31 | Hyundai Motor Company | Vehicle aftertreatment system enabling the change in the sequence of operating aftertreatment devices |
| CN114382581A (en) * | 2022-03-23 | 2022-04-22 | 潍柴动力股份有限公司 | High-efficient low back pressure aftertreatment device of diesel engine |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1116272A (en) * | 1994-06-29 | 1996-02-07 | 康斯廷坦·帕特斯 | Method and apparatus for controlled regeneration of diesel engine smoke filter |
| US20070039317A1 (en) * | 2005-08-17 | 2007-02-22 | Makoto Momosaki | Exhaust apparatus for vehicle, and motorcycle having the same |
| CN101228339A (en) * | 2003-04-02 | 2008-07-23 | 朱利叶斯·J·瑞姆 | System for and methods of operating diesel engines to reduce harmful exhaust emissions and to improve engine lubrication |
| CN101278109A (en) * | 2005-08-15 | 2008-10-01 | 排放技术有限公司 | Process and apparatus for treating exhaust gas of an internal combustion engine |
| CN101755110A (en) * | 2007-07-27 | 2010-06-23 | 丰田自动车株式会社 | Exhaust purification device for internal combustion engine |
-
2011
- 2011-03-22 CN CN2011100706444A patent/CN102116187A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1116272A (en) * | 1994-06-29 | 1996-02-07 | 康斯廷坦·帕特斯 | Method and apparatus for controlled regeneration of diesel engine smoke filter |
| CN101228339A (en) * | 2003-04-02 | 2008-07-23 | 朱利叶斯·J·瑞姆 | System for and methods of operating diesel engines to reduce harmful exhaust emissions and to improve engine lubrication |
| CN101278109A (en) * | 2005-08-15 | 2008-10-01 | 排放技术有限公司 | Process and apparatus for treating exhaust gas of an internal combustion engine |
| US20070039317A1 (en) * | 2005-08-17 | 2007-02-22 | Makoto Momosaki | Exhaust apparatus for vehicle, and motorcycle having the same |
| CN101755110A (en) * | 2007-07-27 | 2010-06-23 | 丰田自动车株式会社 | Exhaust purification device for internal combustion engine |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104968911A (en) * | 2013-08-01 | 2015-10-07 | 宫下美智子 | Exhaust gas purification system |
| US11105237B2 (en) * | 2019-02-27 | 2021-08-31 | Hyundai Motor Company | Vehicle aftertreatment system enabling the change in the sequence of operating aftertreatment devices |
| CN114382581A (en) * | 2022-03-23 | 2022-04-22 | 潍柴动力股份有限公司 | High-efficient low back pressure aftertreatment device of diesel engine |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| ASS | Succession or assignment of patent right |
Owner name: ZHEJIANG YINLUN MACHINERY CO., LTD. |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20111104 Address after: 310013 A District, Zhejiang University Science Park, 525 Xixi Road, Zhejiang, Hangzhou 416, China Applicant after: Hangzhou Yinlun Science and Technology Co., Ltd. Co-applicant after: Zhejiang Yinlun Machinery Co., Ltd. Address before: 310013 A District, Zhejiang University Science Park, 525 Xixi Road, Zhejiang, Hangzhou 416, China Applicant before: Hangzhou Yinlun Science and Technology Co., Ltd. |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110706 |