CN104624049A - Diesel engine tail gas reducing agent with lubrication action as well as application and preparation method of diesel engine tail gas reducing agent - Google Patents
Diesel engine tail gas reducing agent with lubrication action as well as application and preparation method of diesel engine tail gas reducing agent Download PDFInfo
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- CN104624049A CN104624049A CN201410764487.0A CN201410764487A CN104624049A CN 104624049 A CN104624049 A CN 104624049A CN 201410764487 A CN201410764487 A CN 201410764487A CN 104624049 A CN104624049 A CN 104624049A
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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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Abstract
The invention provides a diesel engine tail gas reducing agent with a lubrication action and an application, as well as a preparation method of the diesel engine tail gas reducing agent with the lubrication action. The diesel engine tail gas reducing agent with the lubrication action mainly comprises the following components: urea, high-purity water and ethanol, wherein the concentration of the urea is 31.8 wt%-33.3 wt%, and the concentration of ethanol is 0.1wt%-0.9wt%; and the conversion efficiency of oxynitride in diesel engine tail gas is greater than or equal to 96% at the temperature of above 210 DEG C. Compared with the prior art, the diesel engine tail gas reducing agent has the advantages that a proper amount of ethanol is added to the diesel engine tail gas reducing agent with the lubrication action, so that the conversion efficiency of oxynitride in the tail gas is improved, the conversion temperature is lowered, the applicable working conditions are expanded, and the emission of automobile tail gas is reduced simultaneously.
Description
Technical field
The present invention relates to a kind of motor exhaust reducing agent, particularly relate to a kind of diesel engine vent gas reducing agent with lubrication, the application of this reducing agent and preparation method.
Background technology
Diesel-engined vehicle is compared with gasoline automobile, and power performance is good, and the thermal efficiency is high, and save fuel oil, greenhouse gas emission is lower; But comparatively gasoline engine is high for nitrogen oxide and particle in diesel automobile exhaust discharge.In order to reduce diesel automobile exhaust discharge in nitrogen oxide and particle, particularly US and European will forcibly implement some severeer specifications in the emission compliance of automobile nitrogen oxide NOx and particulate PM, such as, mark is discharged in Europe 5 and Europe 6, car manufactures have employed a kind of SCR (Selective Catalytic Reduction, SCR) technical finesse exhaust gas from diesel vehicle, makes it to reach discharge standard.
Existing reducing agent adopts urea liquid usually, mixes mutually after jet atomization with the tail gas of diesel engine, under the effect of catalyst, in temperature range (315-400 DEG C), redox reaction occurs, thus generates N
2and water.By the above-mentioned requirement that can meet existing automobile emissions standards to a great extent, but when engine temperature is lower, be still difficult to meet emission request.
Summary of the invention
In view of the above, the present invention is necessary to provide a kind of diesel engine vent gas reducing agent being suitable for low temperature.
There is a need to the application that a kind of above-mentioned reduction is provided.
In addition, there is a need to the preparation method that above-mentioned reducing agent is provided.
There is a diesel engine vent gas reducing agent for lubrication, mainly consist of the following composition:
Urea, high purity water and ethanol;
Wherein, in described diesel engine vent gas reducing agent, urea concentration is 31.8-33.3wt%, and concentration of alcohol is 0.1-0.9wt%; In described diesel engine vent gas, oxynitrides transformation efficiency more than 210 DEG C is more than or equal to 96%.
In preferred embodiment of the present invention, described urea concentration is 31.8wt%, and concentration of alcohol is 0.1-0.9wt%; Or described urea concentration is 32wt%, concentration of alcohol is 0.1-0.9wt%; Or described urea concentration is 32.5wt%, concentration of alcohol is 0.1-0.9wt%; Or described urea concentration is 33wt%, concentration of alcohol is 0.1-0.9wt%; Or described urea concentration is 33.3wt%, concentration of alcohol is 0.1-0.9wt%.
In preferred embodiment of the present invention, the concentration of described urea and ethanol is the one in following table:
| Sequence number | Composition (numerical value unit wt%) |
| Urea concentration | Concentration of alcohol | |
| 1 | 31.8 | 0.1 |
| 2 | 31.8 | 0.15 |
| 3 | 32 | 0.7 |
| 4 | 32.5 | 0.3 |
| 5 | 32.5 | 0.5 |
| 6 | 32.5 | 0.65 |
| 7 | 32.5 | 0.9 |
| 8 | 33 | 0.1 |
| 9 | 33 | 0.9 |
| 10 | 33.3 | 0.1 |
| 11 | 33.3 | 0.9 |
In preferred embodiment of the present invention, this metal ion content with the diesel engine vent gas reducing agent of lubrication is:
Sodium≤0.5 ㎎/㎏;
Magnesium≤0.5 ㎎/㎏;
Aluminium≤0.5 ㎎/㎏;
Potassium≤0.5 ㎎/㎏;
Calcium≤0.5 ㎎/㎏;
Chromium≤0.2 ㎎/㎏;
Iron≤0.5 ㎎/㎏;
Nickel≤0.2 ㎎/㎏;
Copper≤0.2 ㎎/㎏;
Zinc≤0.2 ㎎/㎏.
In preferred embodiment of the present invention, this has aldehydes (in HCHO)≤3 ㎎/㎏ of the diesel engine vent gas reducing agent of lubrication, the content≤0.3wt% of biuret.
In preferred embodiment of the present invention, described high-purity resistivity of water is 15-17M Ω cm.
In preferred embodiment of the present invention, it is applied to the vehicles using diesel engine.
In preferred embodiment of the present invention, the described vehicles are bus, passenger vehicle and car or steamer.
There is a preparation method for the diesel engine vent gas reducing agent of lubrication, comprise the following steps:
Get urea synthesis reaction liquid, remove unconverted thing ammonia wherein and carbon dioxide, or adopt industrial urea to carry out being recrystallized once and more than, described recrystallization process is: industrial urea is dissolved in the water that temperature is 70-75 DEG C, and make saturated solution, with charcoal absorption, after heat filtering, crystallisation by cooling, dry obtained high-purity urea;
Add high purity water;
Add ethanol;
Make urea concentration be 31.8-33.3wt%, concentration of alcohol is 0.1-0.9wt%.
In preferred embodiment of the present invention, the concentration of described urea and ethanol is the one in following table:
; The metal ion content of described reducing agent is:
Sodium≤0.5 ㎎/㎏;
Magnesium≤0.5 ㎎/㎏;
Aluminium≤0.5 ㎎/㎏;
Potassium≤0.5 ㎎/㎏;
Calcium≤0.5 ㎎/㎏;
Chromium≤0.2 ㎎/㎏;
Iron≤0.5 ㎎/㎏;
Nickel≤0.2 ㎎/㎏;
Copper≤0.2 ㎎/㎏;
Zinc≤0.2 ㎎/㎏.
The diesel engine vent gas reducing agent with lubrication of present pre-ferred embodiments, with the addition of appropriate ethanol, not only increases the transformation efficiency of oxynitrides, reduce conversion temperature simultaneously, expand applicable operating mode, reduce the discharge of vehicle exhaust.
Detailed description of the invention
Use for diesel engine reducing agent of the present invention and preparation method thereof is not limited to the concrete numerical value restriction that following examples limit, and how the following description only realizes to make those skilled in the art understand this technology.
The diesel engine vent gas reducing agent with lubrication of present pre-ferred embodiments, mainly consists of the following composition:
Urea, high purity water and,
Ethanol;
Wherein, urea concentration is 31.8-33.3wt%, and concentration of alcohol is 0.1-0.9wt%.
Described have in the diesel engine vent gas reducing agent of lubrication, and metal ion content is:
Sodium≤0.5 ㎎/㎏;
Magnesium≤0.5 ㎎/㎏;
Aluminium≤0.5 ㎎/㎏;
Potassium≤0.5 ㎎/㎏;
Calcium≤0.5 ㎎/㎏;
Chromium≤0.2 ㎎/㎏;
Iron≤0.5 ㎎/㎏;
Nickel≤0.2 ㎎/㎏;
Copper≤0.2 ㎎/㎏;
Zinc≤0.2 ㎎/㎏.
The above-mentioned diesel engine vent gas reducing agent with lubrication obtains by the following method:
Get urea synthesis reaction liquid, remove unconverted thing ammonia wherein and carbon dioxide, make ammonia density≤0.35wt%, obtaining urea concentration is 70-85wt%; Be the high purity water allotment of 15-17M Ω cm by described high-purity urea solution and resistivity, then filter, obtain the urea liquid that urea concentration is 35-63wt%; Described urea liquid is also by after purifying industrial urea, removing the impurity such as biuret, and being dissolved in high purity water obtains;
In above-mentioned urea liquid, add ethanol in proper amount, then add high purity water, make urea concentration be 31.8-33.3wt%, the concentration of ethanol is 0.1-0.9wt%.
Below in conjunction with specific embodiment, the present invention's diesel engine vent gas reducing agent with lubrication and preparation method thereof is further described.Specific embodiment in detailed description of the invention is for further describing the present invention, non-limiting protection scope of the present invention.
The each substance detecting method of various embodiments of the present invention records in the following way:
The detection method of ammonia density adopts ISO 22241-2:2006;
The detection method of urea concentration adopts ISO 22241-2:2006;
The detection method of resistivity adopts SL78-1994;
The detection method of Biuret Content adopts ISO 22241-2:2006;
Oxynitrides transforms and tests according to the method for HJ 451-2008 " environmental protection product technical requirement diesel engine truck exhaust after-treatment device ".
Embodiment 1
Get urea synthesis reaction liquid 1000L, remove unconverted thing ammonia wherein and carbon dioxide, add the high purity water allotment that resistivity is 15 Ω cm, then filter, obtain urea liquid.
Add and stir to above-mentioned urea liquid with the absolute ethyl alcohol of molecular sieve process.
Add the high purity water that resistivity is 15 Ω cm, make urea concentration in final solution be 31.8wt%, concentration of alcohol is 0.1wt%.
Test according to the method for HJ 451-2008 " environmental protection product technical requirement diesel engine truck exhaust after-treatment device ", 290 DEG C can reach oxynitrides conversion ratio up to 97%.
The check experiment of the present embodiment, have employed urea concentration is the reducing agent that 31.8wt% does not add ethanol, and 330 DEG C can reach oxynitrides conversion ratio up to 94%.
Embodiment 2
Get urea synthesis reaction liquid 1000L, remove unconverted thing ammonia wherein and carbon dioxide, add high purity water allotment, then filter, obtain urea liquid.
Add the absolute ethyl alcohol with molecular sieve process and stir.
Add the high purity water that resistivity is 15 Ω cm, make urea concentration be 31.8wt%, the concentration of ethanol is 0.15wt%.
Test according to the method for HJ 451-2008 " environmental protection product technical requirement diesel engine truck exhaust after-treatment device ", 278 DEG C can reach oxynitrides conversion ratio up to 96%.
The check experiment of the present embodiment, have employed urea concentration is the reducing agent that 31.8wt% does not add ethanol, and 330 DEG C can reach oxynitrides conversion ratio up to 94%.
Embodiment 3
Get urea synthesis reaction liquid 1000L, remove unconverted thing ammonia wherein and carbon dioxide, add high purity water allotment, then filter, obtain urea liquid.
Add the absolute ethyl alcohol with molecular sieve process and stir.
Add the high purity water that resistivity is 15 Ω cm, make urea concentration be 32wt%, the concentration of ethanol is 0.7wt%.
Test according to the method for HJ 451-2008 " environmental protection product technical requirement diesel engine truck exhaust after-treatment device ", 216 DEG C can reach oxynitrides conversion ratio up to 96%.
The check experiment of the present embodiment, have employed urea concentration is the reducing agent that 32wt% does not add ethanol, and 330 DEG C can reach oxynitrides conversion ratio up to 94%.
Embodiment 4
Get urea synthesis reaction liquid 1000L, remove unconverted thing ammonia wherein and carbon dioxide, add high purity water allotment, then filter, obtain urea liquid.
Add the absolute ethyl alcohol with molecular sieve process and stir.
Add the high purity water that resistivity is 15 Ω cm, make urea concentration be 32.5wt%, the concentration of ethanol is 0.3wt%.
Test according to the method for HJ 451-2008 " environmental protection product technical requirement diesel engine truck exhaust after-treatment device ", 260 DEG C can reach oxynitrides conversion ratio up to 98%.
The check experiment of the present embodiment, have employed urea concentration is the reducing agent that 32.5wt% does not add ethanol, and 320 DEG C can reach oxynitrides conversion ratio up to 95%.
Embodiment 5
Get urea synthesis reaction liquid 1000L, remove unconverted thing ammonia wherein and carbon dioxide, add high purity water allotment, then filter, obtain urea liquid.
Add the absolute ethyl alcohol with molecular sieve process and stir.
Add the high purity water that resistivity is 15 Ω cm, make urea concentration be 32.5wt%, the concentration of ethanol is 0.5wt%.
Test according to the method for HJ 451-2008 " environmental protection product technical requirement diesel engine truck exhaust after-treatment device ", 250 DEG C can reach oxynitrides conversion ratio up to 98%.
The check experiment of the present embodiment, have employed urea concentration is the reducing agent that 32.5wt% does not add ethanol, and 320 DEG C can reach oxynitrides conversion ratio up to 95%.
Embodiment 6
Get urea synthesis reaction liquid 1000L, remove unconverted thing ammonia wherein and carbon dioxide, add high purity water allotment, then filter, obtain urea liquid.
Add the absolute ethyl alcohol with molecular sieve process and stir.
Add the high purity water that resistivity is 15 Ω cm, make urea concentration be 32.5wt%, the concentration of ethanol is 0.65wt%.
Test according to the method for HJ 451-2008 " environmental protection product technical requirement diesel engine truck exhaust after-treatment device ", 213 DEG C can reach oxynitrides conversion ratio up to 96%.
The check experiment of the present embodiment, have employed urea concentration is the reducing agent that 32.5wt% does not add ethanol, and 320 DEG C can reach oxynitrides conversion ratio up to 95%.
Embodiment 7
Get urea synthesis reaction liquid 1000L, remove unconverted thing ammonia wherein and carbon dioxide, add high purity water allotment, then filter, obtain urea liquid.
Add the absolute ethyl alcohol with molecular sieve process and stir.
Add the high purity water that resistivity is 15 Ω cm, make urea concentration be 32.5wt%, the concentration of ethanol is 0.9wt%.
Test according to the method for HJ 451-2008 " environmental protection product technical requirement diesel engine truck exhaust after-treatment device ", 210 DEG C can reach oxynitrides conversion ratio up to 98%.
The check experiment of the present embodiment, have employed urea concentration is the reducing agent that 32.5wt% does not add ethanol, and 320 DEG C can reach oxynitrides conversion ratio up to 95%.
Embodiment 8
Get urea synthesis reaction liquid 1000L, remove unconverted thing ammonia wherein and carbon dioxide, add high purity water allotment, then filter, obtain urea liquid.
Add the absolute ethyl alcohol with molecular sieve process and stir.
Add the high purity water that resistivity is 15 Ω cm, make urea concentration be 33wt%, the concentration of ethanol is 0.1wt%.
Test according to the method for HJ 451-2008 " environmental protection product technical requirement diesel engine truck exhaust after-treatment device ", 286 DEG C can reach oxynitrides conversion ratio up to 97%.
The check experiment of the present embodiment, have employed urea concentration is the reducing agent that 33wt% does not add ethanol, and 340 DEG C can reach oxynitrides conversion ratio up to 94%.
Embodiment 9
Get urea synthesis reaction liquid 1000L, remove unconverted thing ammonia wherein and carbon dioxide, add high purity water allotment, then filter, obtain urea liquid.
Add the absolute ethyl alcohol with molecular sieve process and stir.
Add the high purity water that resistivity is 15 Ω cm, make urea concentration be 33wt%, the concentration of ethanol is 0.9wt%.
Test according to the method for HJ 451-2008 " environmental protection product technical requirement diesel engine truck exhaust after-treatment device ", 211 DEG C can reach oxynitrides conversion ratio up to 97%.
The check experiment of the present embodiment, have employed urea concentration is the reducing agent that 33wt% does not add ethanol, and 340 DEG C can reach oxynitrides conversion ratio up to 94%.
Embodiment 10
Get urea synthesis reaction liquid 1000L, remove unconverted thing ammonia wherein and carbon dioxide, add high purity water allotment, then filter, obtain urea liquid.
Add the absolute ethyl alcohol with molecular sieve process and stir.
Add the high purity water that resistivity is 15 Ω cm, make urea concentration be 33.3wt%, the concentration of ethanol is 0.1wt%.
Test according to the method for HJ 451-2008 " environmental protection product technical requirement diesel engine truck exhaust after-treatment device ", 265 DEG C can reach oxynitrides conversion ratio up to 96%.
The check experiment of the present embodiment, have employed urea concentration is the reducing agent that 33.3wt% does not add ethanol, and 341 DEG C can reach oxynitrides conversion ratio up to 94%.
Embodiment 11
Get urea synthesis reaction liquid 1000L, remove unconverted thing ammonia wherein and carbon dioxide, add high purity water allotment, then filter, obtain urea liquid.
Add the absolute ethyl alcohol with molecular sieve process and stir.
Add the high purity water that resistivity is 15 Ω cm, make urea concentration be 33.3wt%, the concentration of ethanol is 0.9wt%.
Test according to the method for HJ 451-2008 " environmental protection product technical requirement diesel engine truck exhaust after-treatment device ", 245 DEG C can reach oxynitrides conversion ratio up to 96%.
The check experiment of the present embodiment, have employed urea concentration is the reducing agent that 33.3wt% does not add ethanol, and 341 DEG C can reach oxynitrides conversion ratio up to 94%.
The results of property parameter list of table 1 embodiment
Show from the data of table 1, the diesel engine vent gas reducing agent with lubrication obtained in embodiment 1 to embodiment 11, with the addition of appropriate ethanol, not only increase the transformation efficiency of oxynitrides in tail gas, reduce the conversion temperature of oxynitrides simultaneously, expand applicable operating mode, reduce the discharge of vehicle exhaust.
High-purity urea of above-described embodiment is also by once above recrystallization is obtained: industrial urea is dissolved in temperature 70-75 DEG C of water, obtained saturated solution, with charcoal absorption, carries out heat filtering, then crystallisation by cooling, dry high-purity urea.Above-mentioned recrystallization process can carry out one or many, and the high-purity urea after recrystallization can reach the same result of above-described embodiment, therefore also can directly adopt industrial urea to make.
The foregoing is only embodiments of the invention; not thereby the scope of the claims of the present invention is limited; every utilize description of the present invention to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (10)
1. there is a diesel engine vent gas reducing agent for lubrication, it is characterized in that, mainly consist of the following composition:
Urea, high purity water and, ethanol;
Wherein, in described tail gas reductant, urea concentration is 31.8-33.3wt%, and concentration of alcohol is 0.1-0.9wt%; Described tail gas reductant is more than or equal to 96% to the transformation efficiency of oxynitrides in diesel engine vent gas more than 210 DEG C.
2. the diesel engine vent gas reducing agent with lubrication according to claim 1, it is characterized in that: described urea concentration is 31.8wt%, concentration of alcohol is 0.1-0.9wt%; Or described urea concentration is 32wt%, concentration of alcohol is 0.1-0.9wt%; Or described urea concentration is 32.5wt%, concentration of alcohol is 0.1-0.9wt%; Or described urea concentration is 33wt%, concentration of alcohol is 0.1-0.9wt%; Or described urea concentration is 33.3wt%, concentration of alcohol is 0.1-0.9wt%.
3. the diesel engine vent gas reducing agent with lubrication according to claim 1, is characterized in that: the concentration of described urea and ethanol is the one in following table:
4. the diesel engine vent gas reducing agent with lubrication according to claim 1, is characterized in that: this metal ion content with the diesel engine vent gas reducing agent of lubrication is:
Sodium≤0.5 ㎎/㎏;
Magnesium≤0.5 ㎎/㎏;
Aluminium≤0.5 ㎎/㎏;
Potassium≤0.5 ㎎/㎏;
Calcium≤0.5 ㎎/㎏;
Chromium≤0.2 ㎎/㎏;
Iron≤0.5 ㎎/㎏;
Nickel≤0.2 ㎎/㎏;
Copper≤0.2 ㎎/㎏;
Zinc≤0.2 ㎎/㎏.
5. the diesel engine vent gas reducing agent with lubrication according to claim 1, is characterized in that: this has aldehydes (in HCHO)≤3 ㎎/㎏ of the diesel engine vent gas reducing agent of lubrication, the content≤0.3wt% of biuret.
6. the diesel engine vent gas reducing agent with lubrication according to claim 1, is characterized in that: described pure resistivity of water is 15-17M Ω cm.
7. the application with the diesel engine vent gas reducing agent of lubrication as described in claim 1-6 any one, is characterized in that: it is applied to the vehicles using diesel engine.
8. the application with the diesel engine vent gas reducing agent of lubrication according to claim 7, is characterized in that: the described vehicles are bus, passenger vehicle and car or steamer.
9. the preparation method with the diesel engine vent gas reducing agent of lubrication as described in claim 1-6 any one, comprises the following steps:
Get urea synthesis reaction liquid, remove unconverted thing ammonia wherein and carbon dioxide, or adopt industrial urea to carry out being recrystallized once and more than, described recrystallization process is: industrial urea is dissolved in the water that temperature is 70-75 DEG C, and make saturated solution, with charcoal absorption, after heat filtering, crystallisation by cooling, dry obtained high-purity urea;
Add high purity water;
Add ethanol;
Make urea concentration be 31.8-33.3wt%, concentration of alcohol is 0.1-0.9wt%.
10. the preparation method with the diesel engine vent gas reducing agent of lubrication according to claim 9, is characterized in that:
The concentration of described urea and ethanol is the one in following table:
; The metal ion content of described reducing agent is:
Sodium≤0.5 ㎎/㎏;
Magnesium≤0.5 ㎎/㎏;
Aluminium≤0.5 ㎎/㎏;
Potassium≤0.5 ㎎/㎏;
Calcium≤0.5 ㎎/㎏;
Chromium≤0.2 ㎎/㎏;
Iron≤0.5 ㎎/㎏;
Nickel≤0.2 ㎎/㎏;
Copper≤0.2 ㎎/㎏;
Zinc≤0.2 ㎎/㎏.
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|---|---|---|---|
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107051204A (en) * | 2017-05-09 | 2017-08-18 | 东莞蔚蓝环保科技有限公司 | A kind of preparation technology of urea for vehicle solution |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3519383A (en) * | 1963-05-27 | 1970-07-07 | Deering Milliken Res Corp | Minimizing odor by adding methylol amides and methylol amines to reducing agent solutions used to treat wool |
| JPH07155554A (en) * | 1993-12-10 | 1995-06-20 | Sekiyu Sangyo Kasseika Center | Method for catalytically reducing nox |
| CN1227506A (en) * | 1996-07-11 | 1999-09-01 | 三菱重工业株式会社 | Exhaust gas denitration method |
| CN101190410A (en) * | 2006-11-29 | 2008-06-04 | 株式会社Ict | Oxidation catalyst and exhaust-gas purification system using the same |
| CN101298847A (en) * | 2007-05-04 | 2008-11-05 | 通用汽车环球科技运作公司 | Method and apparatus for generating a reductant in an exhaust gas of a compression-ignition engine |
| CN101811065A (en) * | 2010-04-20 | 2010-08-25 | 江苏可兰素汽车环保科技有限公司 | Production process for tail gas catalytic reducer |
| CN102806011A (en) * | 2011-06-03 | 2012-12-05 | 中国石油化工股份有限公司 | Method for preparing automobile urea liquid reducing agent |
| CN102834596A (en) * | 2010-04-09 | 2012-12-19 | 尤米科尔股份公司及两合公司 | Method of depleting nitrous oxide in exhaust gas after-treatment for lean-burn engines |
| CN103080523A (en) * | 2010-08-27 | 2013-05-01 | 雷诺卡车公司 | Engine arrangement comprising a heat recovery circuit and an exhaust gases after-treatment system |
| CN103769236A (en) * | 2012-10-17 | 2014-05-07 | 大英C&E | Catalyst module element for selective catalytic reduction, catalyst module using the element, and method for manufacturing the same |
-
2014
- 2014-12-12 CN CN201410764487.0A patent/CN104624049A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3519383A (en) * | 1963-05-27 | 1970-07-07 | Deering Milliken Res Corp | Minimizing odor by adding methylol amides and methylol amines to reducing agent solutions used to treat wool |
| JPH07155554A (en) * | 1993-12-10 | 1995-06-20 | Sekiyu Sangyo Kasseika Center | Method for catalytically reducing nox |
| CN1227506A (en) * | 1996-07-11 | 1999-09-01 | 三菱重工业株式会社 | Exhaust gas denitration method |
| CN101190410A (en) * | 2006-11-29 | 2008-06-04 | 株式会社Ict | Oxidation catalyst and exhaust-gas purification system using the same |
| CN101298847A (en) * | 2007-05-04 | 2008-11-05 | 通用汽车环球科技运作公司 | Method and apparatus for generating a reductant in an exhaust gas of a compression-ignition engine |
| CN102834596A (en) * | 2010-04-09 | 2012-12-19 | 尤米科尔股份公司及两合公司 | Method of depleting nitrous oxide in exhaust gas after-treatment for lean-burn engines |
| CN101811065A (en) * | 2010-04-20 | 2010-08-25 | 江苏可兰素汽车环保科技有限公司 | Production process for tail gas catalytic reducer |
| CN103080523A (en) * | 2010-08-27 | 2013-05-01 | 雷诺卡车公司 | Engine arrangement comprising a heat recovery circuit and an exhaust gases after-treatment system |
| CN102806011A (en) * | 2011-06-03 | 2012-12-05 | 中国石油化工股份有限公司 | Method for preparing automobile urea liquid reducing agent |
| CN103769236A (en) * | 2012-10-17 | 2014-05-07 | 大英C&E | Catalyst module element for selective catalytic reduction, catalyst module using the element, and method for manufacturing the same |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107051204A (en) * | 2017-05-09 | 2017-08-18 | 东莞蔚蓝环保科技有限公司 | A kind of preparation technology of urea for vehicle solution |
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