CN103256107B - A kind of SCR reprocessing catalyst - Google Patents
A kind of SCR reprocessing catalyst Download PDFInfo
- Publication number
- CN103256107B CN103256107B CN201310219437.XA CN201310219437A CN103256107B CN 103256107 B CN103256107 B CN 103256107B CN 201310219437 A CN201310219437 A CN 201310219437A CN 103256107 B CN103256107 B CN 103256107B
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- CN
- China
- Prior art keywords
- cylinder body
- outer cylinder
- carrier
- assembly
- scr
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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
Abstract
The invention provides a kind of SCR reprocessing catalyst, comprise the suction tude assembly be connected with engine exhaust pipe, for loading the outer cylinder body assembly of SCR carrier, outlet pipe, and for by suction tude assembly, the end plate one that outer cylinder body assembly is connected with outlet pipe and end plate two, in described outer cylinder body assembly, carrier is set, described outer cylinder body assembly, carrier becomes SCR postprocessor with the end plate connection at two ends, described suction tude assembly and outlet pipe are connected to SCR postprocessor both sides, outer cylinder body assembly comprises the outer cylinder body one be linked in sequence, outer cylinder body two and outer cylinder body three, carrier both sides arrange dividing plate, and be fixed in described outer cylinder body assembly by the dividing plate of both sides.The present invention greatly reduces the economic loss under the independent failure conditions of user's carrier in SCR postprocessor, decreases and changes the wasting of resources that causes of whole SCR postprocessor and environmental pollution, and save the raw material of preprocessor, reduce user cost.
Description
Technical field
The invention belongs to diesel engine vent gas process field, especially relate to a kind of with SCR urea injection system with the use of SCR postprocessor.
Background technique
Diesel engine has obvious advantage, particularly CO than petrol engine in power character, Economy and reliability
2discharge very low, its purposes expands in all kinds of vehicle gradually.But it is that the discharge of particulate matter and nitrogen oxide is serious that diesel engine exists maximum problem.Along with Chinese emission control regulations are more and more stricter, and domestic diesel engine performance and oil product problem, depend emission controls by improving combustion measure alone and seem unable to do what one wishes, be therefore necessary to take the outer after-treatment system of machine to reach emission reduction targets.
SCR technology is the outer post-processing technology of a kind of machine of vehicle diesel engine, effectively can improve the discharge of diesel engine nitrogen oxide, and insensitive to diesel oil sulphur content.This technology by spraying into certain density urea liquid in outlet pipe, there are reduction reaction (3) ~ (5) in the ammonia after pyrolytic reaction (1) and hydrolysis reaction (2) and nitrogen oxide, be the water vapour and nitrogen that are safe from harm to environment by conversion of nitrogen oxides in reprocessing catalytic converter.
(NH
2)
2CO→NH
3+HNCO (1)
NH
3+HNCO→NH
3+CO
2(2)
4NO+4NH
3+O
2→4N
2+6H
2O (3)
2NO
3+NO+NO
2→2N
2+3H
2O (4)
6NO
2+8NH
3→7N
2+12H
2O (5)
At present, SCR postprocessor uses as an assembly product, and there is the risk damaged because of the frangible of itself in the carrier being coated with catalyzer in SCR postprocessor, when carrier is because of when the Environmental Conditions in the external world is too severe or the incorrect installation of user and use cause the fracture, fragmentation, leakage etc. of carrier to lose efficacy, can only be solved by the form of integral replacing at present, very large waste is caused to other component of preprocessor.
Summary of the invention
The problem to be solved in the present invention is to provide a kind of SCR reprocessing catalyst, the SCR system of the detachable preprocessor of especially economy, environmental protection.
For solving the problems of the technologies described above, the technical solution used in the present invention is: a kind of SCR reprocessing catalyst, comprise the suction tude assembly be connected with engine exhaust pipe, for loading the outer cylinder body assembly of SCR carrier, outlet pipe, and for the end plate one at closed outer cylinder body assembly two ends and end plate two, in described outer cylinder body assembly, carrier is set, described outer cylinder body assembly, carrier becomes SCR postprocessor with the end plate connection at two ends, described suction tude assembly and outlet pipe are connected in SCR postprocessor, outer cylinder body assembly comprises the outer cylinder body one be linked in sequence, outer cylinder body two and outer cylinder body three, outer cylinder body one, connected by abutted flange between outer cylinder body two and outer cylinder body three,
Carrier both sides arrange dividing plate, and are fixed in described outer cylinder body assembly by the dividing plate of both sides, and a dividing plate and carrier are bolted, and another dividing plate and carrier are fixed by carrier clip;
Described suction tude assembly is made up of left air inlet tube wall, right air inlet tube wall and the inlet flange be set on left and right air inlet tube wall.
Further, suction tude assembly is connected on outer cylinder body two, and outlet pipe is connected on the end plate two that is connected with outer cylinder body three.
Further, outer cylinder body one, joint between outer cylinder body two and outer cylinder body three arrange abutted flange limit.
Further, outer cylinder body one and outer cylinder body two, outer cylinder body two and outer cylinder body three are fixed with outer cylinder body clip connected respectively.
Further, carrier and side dividing plate are connected and fixed by carrier clip, are connected and fixed by bolt with opposite side dividing plate.
Further, carrier outer wall parcel liner.
Further, suction tude assembly and outer cylinder body assembly arrange the sensor installation seat being used for detecting tail gas respectively.
Further, suction tude assembly is arranged sensor installation seat one, described outer cylinder body three arranges sensor installation seat two.
The advantage that the present invention has and good effect are: owing to adopting technique scheme, it is convenient that device dismounting is simple, carrier is changed, save the raw material of preprocessor, reduce user cost, the economic loss born under reducing the independent failure conditions of carrier in preprocessor, must change the wasting of resources and environmental pollution that whole preprocessor causes after avoiding single component failure.
Accompanying drawing explanation
Fig. 1 is overall structure schematic diagram of the present invention
Fig. 2 is end face side-looking structural representation of the present invention
Fig. 3 is internal structure end view of the present invention
Fig. 4 is internal structure side schematic view of the present invention
Fig. 5 is internal structure cross-sectional schematic of the present invention
In figure:
1, end plate 1, outer cylinder body 1, outer cylinder body clip
4, outer cylinder body 25, outer cylinder body 36, end plate two
7, outlet pipe 8, sensor installation seat 1, inlet flange
10, left air inlet tube wall 11, right air inlet tube wall 12, carrier clip
13, carrier 14, dividing plate 2 15, dividing plate one
16, sensor installation seat two
Embodiment
As shown in Figures 1 to 5, the present invention is SCR postprocessor, comprise for engine exhaust pipe be connected suction tude assembly (by sensor installation seat 1, inlet flange 9, left air inlet tube wall 10, right air inlet tube wall 11 forms), for loading the outer cylinder body assembly of SCR carrier 13, for loading the outer cylinder body 1 of SCR carrier, outer cylinder body 24, outer cylinder body 35, connect the outer cylinder body clip 3 of outer cylinder body assembly, for connection carrier 13 and dividing plate 1, the carrier clip 12 of dividing plate 2 14, for the end plate 1 that suction tude assembly is connected with outer cylinder body assembly with outlet pipe 7, end plate 26, and dividing plate 1, dividing plate 2 14.The outer cylinder body assembly be made up of outer cylinder body 1, outer cylinder body 24 and outer cylinder body 35 and the end plate 1 at two ends, end plate 26 are linked to be an overall SCR postprocessor, the suction tude assembly be connected with engine exhaust pipe and outlet pipe 7 are connected in SCR postprocessor, dividing plate 2 14 and carrier 13 are fixed by carrier clip 12, dividing plate 1 and carrier 13 are bolted, within being fixed on end plate 1 and end plate 26.
Also comprise the sensor installation seat 1 for detecting tail gas, sensor installation seat 2 16, they are separately fixed on the suction tude assembly and outer cylinder body 35 that are connected with engine exhaust pipe.
Also comprise and be connected into an overall suction tude assembly by left air inlet tube wall 10, right air inlet tube wall 11 and inlet flange 9.
When carrier occurs the failure phenomenons such as fracture, fragmentation, leakage because of the reason such as Environmental Conditions in the external world, SCR postprocessor can be carried out split dismounting, only need to change carrier separately, other parts can continue reservation and use.
The working procedure of this example: the outer cylinder body of preprocessor is divided into outer cylinder body 1, outer cylinder body 24, outer cylinder body 35, and make abutted flange limit separately, with devices such as clips, outer cylinder body 1, outer cylinder body 24, outer cylinder body 35 are connected into an overall outer cylinder body assembly, for convenience detach.Carrier 13 becomes from welding the form that one end is hinged, the other end makes flange edge with the mounting type between dividing plate 1, dividing plate 2 14, uses the devices such as clip to be fixed connection.When carrier 13 break, the phenomenon such as inefficacy time, only need the fixing device of clip etc. (outer cylinder body clip 3, carrier clip 12) to open, carrier 13 will be removed smoothly.
Such structural design saves the raw material of preprocessor, reduce the economic loss that user under the independent failure conditions of carrier in preprocessor bears, it also avoid single component failure and just have to change the wasting of resources and environmental pollution that whole preprocessor causes.
Above one embodiment of the present of invention have been described in detail, but described content being only preferred embodiment of the present invention, can not being considered to for limiting practical range of the present invention.All equalizations done according to the present patent application scope change and improve, and all should still belong within patent covering scope of the present invention.
Claims (8)
1. a SCR reprocessing catalyst, comprise be connected with engine exhaust pipe suction tude assembly, for loading outer cylinder body assembly, the outlet pipe of SCR carrier, and for the end plate one at closed outer cylinder body assembly two ends and end plate two, in described outer cylinder body assembly, carrier is set, described outer cylinder body assembly, carrier become SCR postprocessor with the end plate connection at two ends, described suction tude assembly and outlet pipe are connected in SCR postprocessor, it is characterized in that:
Outer cylinder body assembly comprises the outer cylinder body one, outer cylinder body two and the outer cylinder body three that are linked in sequence, outer cylinder body one, is connected by abutted flange between outer cylinder body two and outer cylinder body three;
Carrier both sides arrange dividing plate, and are fixed in described outer cylinder body assembly by the dividing plate of both sides, and a dividing plate and carrier are bolted, and another dividing plate and carrier are fixed by carrier clip;
Described suction tude assembly is made up of left air inlet tube wall, right air inlet tube wall and the inlet flange be set on left and right air inlet tube wall.
2. SCR reprocessing catalyst according to claim 1, is characterized in that: described suction tude assembly is connected on outer cylinder body two, and described outlet pipe is connected on the end plate two that is connected with outer cylinder body three.
3. SCR reprocessing catalyst according to claim 1, is characterized in that: described outer cylinder body one, joint between outer cylinder body two and outer cylinder body three arrange abutted flange limit.
4. the SCR reprocessing catalyst according to claim 1 or 3, is characterized in that: described outer cylinder body one and outer cylinder body two, and outer cylinder body two and outer cylinder body three are fixed with outer cylinder body clip connected respectively.
5. SCR reprocessing catalyst according to claim 1, is characterized in that: described carrier and side dividing plate are connected and fixed by carrier clip, are connected and fixed by bolt with opposite side dividing plate.
6. SCR reprocessing catalyst according to claim 1, is characterized in that: described carrier outer wall parcel liner.
7. SCR reprocessing catalyst according to claim 1, is characterized in that: described suction tude assembly and outer cylinder body assembly arrange the sensor installation seat being used for detecting tail gas respectively.
8. SCR reprocessing catalyst according to claim 7, is characterized in that: described suction tude assembly arranges sensor installation seat one, described outer cylinder body three arranges sensor installation seat two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310219437.XA CN103256107B (en) | 2013-06-04 | 2013-06-04 | A kind of SCR reprocessing catalyst |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310219437.XA CN103256107B (en) | 2013-06-04 | 2013-06-04 | A kind of SCR reprocessing catalyst |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103256107A CN103256107A (en) | 2013-08-21 |
| CN103256107B true CN103256107B (en) | 2015-08-12 |
Family
ID=48960279
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310219437.XA Expired - Fee Related CN103256107B (en) | 2013-06-04 | 2013-06-04 | A kind of SCR reprocessing catalyst |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103256107B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106368771A (en) * | 2016-10-24 | 2017-02-01 | 无锡威孚力达催化净化器有限责任公司 | Barrel type SCR aftertreatment mixing device |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2387339B (en) * | 2002-04-13 | 2004-02-25 | Eminox Ltd | Gas treatment apparatus |
| WO2006029199A1 (en) * | 2004-09-08 | 2006-03-16 | Donaldson Company, Inc. | Joint for an engine exhaust system component |
| CN102191976A (en) * | 2010-03-18 | 2011-09-21 | 丁一 | Catalytic silencer for diesel |
| CN201747440U (en) * | 2010-07-19 | 2011-02-16 | 奇瑞汽车股份有限公司 | Catalytic converter |
| CN102797540A (en) * | 2011-05-27 | 2012-11-28 | 上海天纳克排气系统有限公司 | Selective catalytic reduction (SCR) postprocessor for engineering machine |
| SE536327C2 (en) * | 2011-11-22 | 2013-08-20 | Scania Cv Ab | Arrangement for mounting an exhaust-cleaning unit in an exhaust passage |
| CN202370623U (en) * | 2011-12-05 | 2012-08-08 | 福田雷沃国际重工股份有限公司 | Tail gas purification device for underground engine |
| CN202431335U (en) * | 2011-12-20 | 2012-09-12 | 郑州精益达汽车零部件有限公司 | Automotive three-way catalytic silencer |
| CN203271880U (en) * | 2013-06-04 | 2013-11-06 | 天津亿利汽车环保科技有限公司 | SCR postprocessor catalytic converter |
-
2013
- 2013-06-04 CN CN201310219437.XA patent/CN103256107B/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN103256107A (en) | 2013-08-21 |
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Granted publication date: 20150812 Termination date: 20180604 |