CN102797540A - Selective catalytic reduction (SCR) postprocessor for engineering machine - Google Patents
Selective catalytic reduction (SCR) postprocessor for engineering machine Download PDFInfo
- Publication number
- CN102797540A CN102797540A CN2011101419470A CN201110141947A CN102797540A CN 102797540 A CN102797540 A CN 102797540A CN 2011101419470 A CN2011101419470 A CN 2011101419470A CN 201110141947 A CN201110141947 A CN 201110141947A CN 102797540 A CN102797540 A CN 102797540A
- Authority
- CN
- China
- Prior art keywords
- scr
- mixing chamber
- engineering machinery
- postprocessor
- air inlet
- 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
Images
Landscapes
- Exhaust Gas After Treatment (AREA)
Abstract
The invention discloses a selective catalytic reduction (SCR) postprocessor for an engineering machine. The SCR postprocessor comprises a shell, wherein an air inlet mixing chamber, a reactant chamber and an air outlet mixing chamber are sequentially formed in the shell; the side surface of the air inlet mixing chamber is connected with an air inlet pipe; the side surface of the air outlet mixing chamber is connected with at least one exhaust pipe; a reactant carrier is filled in the reactant chamber; and a catalyst coating is coated on the reactant carrier. The SCR postprocessor has the characteristics of high response speed, high reliability, high sensitivity and compact structure; and the SCR postprocessor can operate together with a urea injection system without the addition of an engine body part and a silencer, so that the requirements of improving the catalytic conversion efficiency of an SCR system and reducing the noise of the machine can be efficiently met.
Description
Technical field
The present invention relates to a kind of diesel engine vent gas processing equipment, particularly a kind of engineering machinery SCR preprocessor.
Background technique
Diesel engine is having remarkable advantages than petrol engine aspect power character, Economy and the reliability, particularly C0
2Discharge lowly, its purposes expands on all kinds of vehicles gradually.But it is that nitrogen oxide and particulate emission are serious that there is maximum problem in diesel engine.Along with Chinese emission control regulations are more and more tighter, and homemade DENG 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 system of machine to reach emissions object.
The SCR technology is the outer post-processing technology of a kind of machine of vehicle diesel engine, can effectively improve the discharging of diesel engine nitrogen oxide, and insensitive to the diesel oil sulphur content.Engineering machinery since long-term work at the big load stage of low speed, so the air temperature and current noise is not obvious, but because engineering machinery is higher to arrangement requirement, therefore requires lowly highly as far as possible to the SCR of engineering machinery, and avoids radiated noise as far as possible.
For the special-purpose SCR catalyst of engineering machinery, can assess by following index.
1, setting height(from bottom)
Optimize silencing apparatus level interval and mixer height.
2, radiated noise
Big planar design is avoided on the optimization system plane.
3, working life
Be the design of car load life-cycle.
Summary of the invention
The object of the invention is to provide a kind of good flowing properties, the moderate engineering machinery SCR preprocessor of crushing.
The objective of the invention is to realize like this: a kind of engineering machinery SCR preprocessor, comprise housing, in housing, be sequentially with air inlet mixing chamber, reagent cavities and the mixing chamber of giving vent to anger; Side at the air inlet mixing chamber is connected with suction tude, is connected with at least one outlet pipe in the side of the mixing chamber of giving vent to anger, and in reagent cavities, is filled with the reactant carrier, on the reactant carrier, is coated with catalyst coat.
Described reactant carrier is cylindrical steinheilite goods, is provided with many parallel channels that axially connect in it, and described catalyst coat is coated in the internal surface of each passage.
Described catalyst coat is a vanadium titanium tungsten mixture coating.
Described outlet pipe is two, and two outlet pipes are arranged side by side forms two tail pipes.
Described outlet pipe is a tube for heat exchanger.
SCR preprocessor of the present invention shows that through finite element analysis (FEA), computational fluid mechanics (CFD) flow analysis demonstration it has the advantage that response is fast, crushing is moderate and reliability is high.
Description of drawings
Fig. 1 is the overall structure schematic representation of engineering machinery SCR preprocessor of the present invention;
Fig. 2 is the structural representation of facing of engineering machinery SCR preprocessor of the present invention.
Embodiment
Referring to Fig. 1, Fig. 2, engineering machinery SCR preprocessor of the present invention comprises housing 1, in housing, is sequentially with air inlet mixing chamber 2, reagent cavities 3 and the mixing chamber 4 of giving vent to anger.Be connected with suction tude 5 in the side of air inlet mixing chamber, be connected with at least one outlet pipe 6 in the side of the mixing chamber of giving vent to anger, in reagent cavities, be filled with reactant carrier 7, on reactant carrier 7, be coated with catalyst coat.Housing 1 wherein is by the Austenitic Stainless Steel manufacturing, and reactant carrier 7 is cylindrical steinheilite goods, is provided with many parallel channels that axially connect in it, and catalyst coat is coated in the internal surface of each passage.This catalyst coat is a vanadium titanium tungsten mixture coating.
Outlet pipe among the present invention can be designed as one or two, and when adopting two outlet pipes, two outlet pipes are arranged side by side forms two tail pipes.
Outlet pipe among the present invention can also be designed to tube for heat exchanger, to reclaim the heat in the tail gas.
The working principle of engineering machinery SCR preprocessor of the present invention is; Suction tude 5 links to each other with the outlet pipe of engine exhaust outlet; The waste gas that produces during the diesel engine operation is input in the SCR preprocessor through the connecting tube between diesel engine and the SCR preprocessor; In air inlet mixing chamber 2, make waste gas and the even mixing of ammonia import reagent cavities 3 then through perforated pipe and the mutual turbulent flow of mixing catch, the catalysis through reactant carrier 7 and catalyst coat changes the nitrogen oxide in the diesel exhaust into harmless nitrogen and water vapor, enters atmosphere through outlet pipe 6 again; Accomplish the noise elimination effect simultaneously, effectively reduce the noise level of diesel engine.The present invention has that speed of response is fast, reliability is high, the characteristics of highly sensitive and compact structure, under the situation that need not increase engine body parts and silencing apparatus with urea-spray system efficient work satisfy entrucking simple and easy with the catalytic conversion efficiency of SCR system and the requirement of car load noise.
The catalytic conversion efficiency of engineering machinery SCR preprocessor of the present invention is confirmed according to engine exhaust emission quantity, can reach 90%, minimumly reaches 60%.
Claims (5)
1. an engineering machinery SCR preprocessor is characterized in that: comprise housing, in housing, be sequentially with air inlet mixing chamber, reagent cavities and the mixing chamber of giving vent to anger; Side at the air inlet mixing chamber is connected with suction tude, is connected with at least one outlet pipe in the side of the mixing chamber of giving vent to anger, and in reagent cavities, is filled with the reactant carrier, on the reactant carrier, is coated with catalyst coat.
2. engineering machinery SCR preprocessor according to claim 1 is characterized in that: described reactant carrier is cylindrical steinheilite goods, is provided with many parallel channels that axially connect in it, and described catalyst coat is coated in the internal surface of each passage.
3. engineering machinery SCR preprocessor according to claim 1 and 2 is characterized in that: described catalyst coat is a vanadium titanium tungsten mixture coating.
4. engineering machinery SCR preprocessor according to claim 1 is characterized in that: described outlet pipe is two, and two outlet pipes are arranged side by side forms two tail pipes.
5. according to claim 1 or 4 described engineering machinery SCR preprocessors, it is characterized in that: described outlet pipe is a tube for heat exchanger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101419470A CN102797540A (en) | 2011-05-27 | 2011-05-27 | Selective catalytic reduction (SCR) postprocessor for engineering machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101419470A CN102797540A (en) | 2011-05-27 | 2011-05-27 | Selective catalytic reduction (SCR) postprocessor for engineering machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102797540A true CN102797540A (en) | 2012-11-28 |
Family
ID=47196809
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011101419470A Pending CN102797540A (en) | 2011-05-27 | 2011-05-27 | Selective catalytic reduction (SCR) postprocessor for engineering machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102797540A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN105910125A (en) * | 2015-12-31 | 2016-08-31 | 南通亚泰工程技术有限公司 | Waste gas boiler with SCR |
| 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 |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6182443B1 (en) * | 1999-02-09 | 2001-02-06 | Ford Global Technologies, Inc. | Method for converting exhaust gases from a diesel engine using nitrogen oxide absorbent |
| JP2009091984A (en) * | 2007-10-09 | 2009-04-30 | Mitsubishi Fuso Truck & Bus Corp | Exhaust emission control device |
| JP2009228484A (en) * | 2008-03-19 | 2009-10-08 | Tokyo Roki Co Ltd | Exhaust emission control device for internal combustion engine |
| US20100071346A1 (en) * | 2008-09-23 | 2010-03-25 | Klingberg Thomas | Hydrolysis catalyst with larger duct cross-sections in the peripheral portion than in the central portion, and method for hydrolysis of a uric substance |
| CN201521331U (en) * | 2009-09-09 | 2010-07-07 | 无锡市凯龙汽车设备制造有限公司 | Catalytic silencer of diesel engine SCR |
| CN101912775A (en) * | 2010-09-03 | 2010-12-15 | 中国汽车技术研究中心 | Selective catalyst for removing oxynitrides from tail gases of diesel vehicles and preparation method thereof |
| CN202157847U (en) * | 2011-05-27 | 2012-03-07 | 上海天纳克排气***有限公司 | Construction machinery SCR post processor |
-
2011
- 2011-05-27 CN CN2011101419470A patent/CN102797540A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6182443B1 (en) * | 1999-02-09 | 2001-02-06 | Ford Global Technologies, Inc. | Method for converting exhaust gases from a diesel engine using nitrogen oxide absorbent |
| JP2009091984A (en) * | 2007-10-09 | 2009-04-30 | Mitsubishi Fuso Truck & Bus Corp | Exhaust emission control device |
| JP2009228484A (en) * | 2008-03-19 | 2009-10-08 | Tokyo Roki Co Ltd | Exhaust emission control device for internal combustion engine |
| US20100071346A1 (en) * | 2008-09-23 | 2010-03-25 | Klingberg Thomas | Hydrolysis catalyst with larger duct cross-sections in the peripheral portion than in the central portion, and method for hydrolysis of a uric substance |
| CN201521331U (en) * | 2009-09-09 | 2010-07-07 | 无锡市凯龙汽车设备制造有限公司 | Catalytic silencer of diesel engine SCR |
| CN101912775A (en) * | 2010-09-03 | 2010-12-15 | 中国汽车技术研究中心 | Selective catalyst for removing oxynitrides from tail gases of diesel vehicles and preparation method thereof |
| CN202157847U (en) * | 2011-05-27 | 2012-03-07 | 上海天纳克排气***有限公司 | Construction machinery SCR post processor |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN105910125A (en) * | 2015-12-31 | 2016-08-31 | 南通亚泰工程技术有限公司 | Waste gas boiler with SCR |
| 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 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11141696B2 (en) | Single module integrated aftertreatment module | |
| GB2512896A (en) | A mixer module and an emissions cleaning module | |
| CN105156181A (en) | Integrated nozzle type SCR catalysis silencer | |
| CN202360191U (en) | Diesel engine tail gas processing SCR catalytic converter | |
| CN202157847U (en) | Construction machinery SCR post processor | |
| CN102797540A (en) | Selective catalytic reduction (SCR) postprocessor for engineering machine | |
| CN202467984U (en) | Selective catalytic reduction (SCR) catalytic converter for aftertreatment on tail gas of diesel engine | |
| CN201330637Y (en) | Catalytic converter used for exhaust system of diesel engine | |
| CN202431338U (en) | Catalytic conversion muffler of diesel engine | |
| CN101782009B (en) | Catalytic converter for diesel motor exhaust | |
| CN201705474U (en) | Low-temperature control self-adaptation valve of SCR catalytic converter | |
| CN102373997B (en) | SCR (selective catalytic reduction) catalytic converter for diesel engine tail gas treatment | |
| CN202157848U (en) | SCR (Selective Catalytic Reduction) catalytic converter | |
| CN101745314B (en) | Selective catalytic reduction converter | |
| CN202012387U (en) | Catalytic converter used for tail gas treatment of diesel | |
| CN102116187A (en) | Catalytic converter for tail gas treatment of diesel engine | |
| CN101435358B (en) | Scr catalytic converter | |
| CN201120254Y (en) | SCR catalytic converter | |
| CN204225977U (en) | Selective catalytic reduction post-processor assembly | |
| CN203050864U (en) | SCR post-processing silencer assembly | |
| CN102536399A (en) | SCR (Selective Catalytic Reduction) catalytic converter for post treatment of tail gas of diesel engine | |
| CN101749088B (en) | Catalytic converter for diesel engine exhaust system | |
| CN204225962U (en) | Penetrating type granule capturing post-processor assembly | |
| CN202451247U (en) | After treatment selective catalytic reduction (SCR) catalytic conversion silencer for diesel engine | |
| CN201351520Y (en) | Tail gas catalytic converter for diesel engine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20121128 |