CN102191976A - Catalytic silencer for diesel - Google Patents
Catalytic silencer for diesel Download PDFInfo
- Publication number
- CN102191976A CN102191976A CN2010101264992A CN201010126499A CN102191976A CN 102191976 A CN102191976 A CN 102191976A CN 2010101264992 A CN2010101264992 A CN 2010101264992A CN 201010126499 A CN201010126499 A CN 201010126499A CN 102191976 A CN102191976 A CN 102191976A
- Authority
- CN
- China
- Prior art keywords
- staving
- barrel body
- outlet pipe
- catalyst
- diesel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000003197 catalytic effect Effects 0.000 title abstract description 13
- 230000003584 silencer Effects 0.000 title abstract 4
- 239000003054 catalyst Substances 0.000 claims abstract description 25
- 230000030279 gene silencing Effects 0.000 claims abstract description 9
- 239000000919 ceramic Substances 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 238000005192 partition Methods 0.000 abstract 3
- 230000001743 silencing effect Effects 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 12
- 238000005516 engineering process Methods 0.000 description 5
- 238000007599 discharging Methods 0.000 description 3
- 238000006555 catalytic reaction Methods 0.000 description 2
- 238000010531 catalytic reduction reaction Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 239000003245 coal Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000002283 diesel fuel Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000012958 reprocessing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
Images
Landscapes
- Exhaust Gas After Treatment (AREA)
Abstract
The invention relates to a tail gas catalytic silencing device, in particular to a catalytic silencer for a diesel. According to the technical scheme provided by the invention, the catalytic silencer for the diesel comprises an air inlet pipe, an air outlet pipe, a middle barrel body and a catalyst positioned in the middle barrel body, wherein the catalyst is arranged in the middle barrel body by utilizing a liner; both ends of the middle barrel body are provided with a front barrel body and a rear barrel body; the middle barrel body, the front barrel body and the rear barrel body are connected mutually by utilizing hoops; one end of the air inlet pipe is positioned in the front barrel body, and the other end of the air inlet pipe is fixedly connected with the front barrel body; a partition plate is arranged in the rear barrel body; one end of the air outlet pipe passes through the rear barrel body and is fixedly connected with the partition plate; the air outlet pipe is fixedly connected with the rear barrel body; and a plurality of through holes are formed on the partition plate. The catalytic silencer has low cost and high catalytic and silencing properties, and is convenient to install and maintain.
Description
Technical field
The present invention relates to a kind of exhaust gas muffler device, especially a kind of selective catalytic conversion system of diesel engine catalytic muffler.
Background technique
At present, follow the fast development of Motor Vehicle, produced serious pollution of atmosphere, and present region composite type characteristics.Many metropolitan pollution of atmosphere turn to coal smoke and automotive composite type to pollute by coal-smoke pollution, and the minority megalopolis has obviously shown the pollution of atmosphere of photochemical smog type (being the motor-vehicle tail-gas type).Therefore, to the research of exhaust gas from diesel vehicle exhaust emission control technique and important, and extremely urgent.
From the development of commercial car, diesel engine is its major impetus.The general supercharging technology diesel-oil vehicle that adopts can satisfy the emission request in I stage, and the II stage has been adopted charge inter cooling, and the III stage has been introduced the electronic fuel injection technology, and the IV stage need be carried out reprocessing to exhaust on above-mentioned technical foundation.
Mainly containing two technology paths (1) at the exhaust after treatment system of IV stage emission control reduces PM (solid particle) discharging+SCR (selective catalytic reduction effect) and selects catalytic reduction reaction to reduce NOx to discharge by optimizing motor (the emission controls by improving combustion technology is optimized oil spout, optimized combustion etc.).(2) adopt EGR (exhaust gas recycling system) waste gas to reduce NOx discharging+employing particulate trap and reduce the PM discharging at circulating technology.Be more prone to use first kind of scheme at present.
Catalytic muffler is parts very crucial in the SCR system.At present, the catalytic muffler of domestic design is shortage relatively, and the catalytic muffler cost height of use is installed and the maintenance inconvenience.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, a kind of diesel SCR catalytic muffler is provided, it is with low cost, and installation and maintenance are convenient, and catalysis and acoustic attenuation performance are good.
According to technological scheme provided by the invention, a kind of diesel SCR catalytic muffler comprises suction tude and steam outlet pipe, middle staving and be arranged in the catalyst converter of staving; Described catalyst converter utilizes liner to be installed in the middle staving, staving and back staving before the two ends of staving are provided with in described, staving and preceding staving and back staving utilize anchor ear to interconnect in described, one end of suction tude is positioned at preceding staving, the other end is fixedlyed connected with preceding staving, is provided with dividing plate in the staving of described back, and an end of described steam outlet pipe passes the back staving and fixedlys connected with dividing plate, described steam outlet pipe is fixedlyed connected with the back staving, and described dividing plate is provided with some through holes.
The outer wall of staving was provided with inlet hole before described suction tude was positioned at.The outer wall that described steam outlet pipe is positioned at the back staving is provided with air outlet hole.Staving is provided with front cover corresponding to the other end that is connected with middle staving before described.The end face of described back staving is provided with rear end cover.Described steam outlet pipe is provided with block temperature sensor and NO
XSensor holder.Described catalyst converter for the surface scribble NO, the metal or the ceramic body of SCR catalyzer.
Advantage of the present invention: the present invention is simple and reasonable, and is with low cost, and finishing and convenient disassembly have catalysis preferably and acoustic attenuation performance.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Embodiment
The invention will be further described below in conjunction with concrete drawings and Examples.
As shown in Figure 1: the present invention includes front cover 1, preceding staving 2, suction tude 3, anchor ear 4, middle staving 5, catalyst converter 6, liner 7, dividing plate 8, back staving 9, steam outlet pipe 10, rear end cover 11, block temperature sensor 12 and NO, sensor holder 13 compositions.
Staving 2 and back staving 9 before the two ends of staving 5 are provided with in described, preceding staving 2 and back staving 9 utilize anchor ear 4 and middle staving 5 to interconnect.Staving 2 is provided with front cover 1 corresponding to the other end that is connected with middle staving 5 before described, and an end of suction tude 3 is positioned at preceding staving 2, and described suction tude 3 is fixedlyed connected with preceding staving 2.The outer wall of staving 2 was provided with inlet hole 17 before described suction tude 3 was positioned at.Described catalyst converter 6 utilizes liner 7 to be installed in the middle staving 5.Described catalyst converter 6 scribbles the metal or the ceramic monolith of catalyzer for the surface.Catalyzer be used for catalyzing N OX chemical reaction.6 of described front cover 1 and catalyst converters form first expansion chamber 14.
Be provided with dividing plate 8 in the staving 9 of described back, an end of described steam outlet pipe 10 passes back staving 9 and fixedlys connected with dividing plate 8, and described steam outlet pipe 10 is fixedlyed connected with back staving 9.On the described dividing plate 8 except that with part that steam outlet pipe 10 is connected be provided with air outlet hole.The outer wall that described steam outlet pipe 10 is positioned at back staving 9 is provided with some through holes 18.Described steam outlet pipe 10 is provided with block temperature sensor 12 and NO, sensor holder 13.8 on described catalyst converter 6 and dividing plate form second expansion chamber 15, and 11 of described dividing plate 8 and rear end covers form the 3rd expansion chamber 16.Described first expansion chamber 14 is communicated with the pore of second expansion chamber 15 by 6 of catalyst converters, and described second expansion chamber 15 is communicated with by the through hole on the dividing plate 8 with the 3rd expansion chamber 16.Described block temperature sensor 12 and NO, sensor holder 13 are used for mounting temperature sensor and NO, sensor.
During use, gas is entered by suction tude 3, and in the staving 2, gas is evenly distributed on the catalyst converter 6 after expanding in first expansion chamber 14 before entering by inlet hole 17.Fully contact the catalyzer of the inside during the aperture of gas by catalyst converter 6 intermediate elongated, gas reacts under the effect of catalyzer, makes NO in the gas
XContent descend.Gas enters second expansion chamber 15 after by catalyst converter 6, and gas enters the 3rd expansion chamber 16 in second expansion chamber 15 back of expanding by the through hole on the dividing plate 8, and after expanding the 3rd expansion chamber 16 in, gas is in air outlet hole 18 enters steam outlet pipe 10, through steam outlet pipe 10 discharges.
Claims (7)
1. diesel catalyst silencing apparatus, comprise suction tude (3), steam outlet pipe (10), middle staving (5) and be arranged in the catalyst converter (6) of staving (5), it is characterized in that: described catalyst converter (6) utilizes liner (7) to be installed in the middle staving (5), and the two ends of described middle staving (5) are provided with preceding staving (2) and back staving (9); Described middle staving (5) utilizes anchor ear with preceding staving (2) and back staving (9), and ((4) interconnect; One end of suction tude (3) is positioned at preceding staving (2), and the other end is fixedlyed connected with preceding staving (2); Be provided with dividing plate (8) in the described back staving (9), an end of described steam outlet pipe (10) passes back staving (9) and fixedlys connected with dividing plate (8), and described steam outlet pipe (10) is fixedlyed connected with back staving (9), and described dividing plate (8) is provided with some through holes.
2. diesel catalyst silencing apparatus according to claim 1 is characterized in that: the outer wall that described suction tude (3) is positioned at preceding staving (2) is provided with inlet hole (17).
3. diesel catalyst silencing apparatus according to claim 1 is characterized in that: the outer wall that described steam outlet pipe (10) is positioned at back staving (9) is provided with air outlet hole (18).
4. diesel catalyst silencing apparatus according to claim 1 is characterized in that: staving (2) is provided with front cover (1) corresponding to the other end that is connected with middle staving (5) before described.
5. diesel catalyst silencing apparatus according to claim 1 is characterized in that: the end face of described back staving (9) is provided with rear end cover (11).
6. diesel catalyst silencing apparatus according to claim 1 is characterized in that: described steam outlet pipe (10) is provided with block temperature sensor (12) and NO
XSensor holder (13).
7. diesel catalyst silencing apparatus according to claim 1 is characterized in that: described catalyst converter (6) for the surface scribble NO, the metal or the ceramic body of SCR catalyzer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101264992A CN102191976A (en) | 2010-03-18 | 2010-03-18 | Catalytic silencer for diesel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101264992A CN102191976A (en) | 2010-03-18 | 2010-03-18 | Catalytic silencer for diesel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102191976A true CN102191976A (en) | 2011-09-21 |
Family
ID=44600742
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010101264992A Pending CN102191976A (en) | 2010-03-18 | 2010-03-18 | Catalytic silencer for diesel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102191976A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102817680A (en) * | 2012-08-30 | 2012-12-12 | 无锡市凯龙汽车设备制造有限公司 | Square box type small-carrier catalysis silencer |
| CN103256107A (en) * | 2013-06-04 | 2013-08-21 | 天津亿利汽车环保科技有限公司 | SCR post-processing catalytic converter |
| CN103321724A (en) * | 2013-07-09 | 2013-09-25 | 潍柴动力股份有限公司 | SCR catalyzing silencer and hybrid tube device of SCR catalyzing silencer |
| CN104011340A (en) * | 2011-12-26 | 2014-08-27 | 双叶产业株式会社 | Exhaust processing device |
| CN105822395A (en) * | 2016-05-11 | 2016-08-03 | 江苏大学 | Tail gas purification muffler applied to 1115 series of single-cylinder diesel engines |
-
2010
- 2010-03-18 CN CN2010101264992A patent/CN102191976A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104011340A (en) * | 2011-12-26 | 2014-08-27 | 双叶产业株式会社 | Exhaust processing device |
| CN104011340B (en) * | 2011-12-26 | 2016-09-14 | 双叶产业株式会社 | Exhaust gas treatment device |
| CN102817680A (en) * | 2012-08-30 | 2012-12-12 | 无锡市凯龙汽车设备制造有限公司 | Square box type small-carrier catalysis silencer |
| CN103256107A (en) * | 2013-06-04 | 2013-08-21 | 天津亿利汽车环保科技有限公司 | SCR post-processing catalytic converter |
| CN103321724A (en) * | 2013-07-09 | 2013-09-25 | 潍柴动力股份有限公司 | SCR catalyzing silencer and hybrid tube device of SCR catalyzing silencer |
| CN103321724B (en) * | 2013-07-09 | 2016-01-06 | 潍柴动力股份有限公司 | SCR catalytic muffler and mixing tube device thereof |
| CN105822395A (en) * | 2016-05-11 | 2016-08-03 | 江苏大学 | Tail gas purification muffler applied to 1115 series of single-cylinder diesel engines |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| DD01 | Delivery of document by public notice |
Addressee: Ding Yi Document name: Notification that Application Deemed to be Withdrawn |
|
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110921 |