CN204716360U - A kind of catalytic muffler - Google Patents
A kind of catalytic muffler Download PDFInfo
- Publication number
- CN204716360U CN204716360U CN201520318916.1U CN201520318916U CN204716360U CN 204716360 U CN204716360 U CN 204716360U CN 201520318916 U CN201520318916 U CN 201520318916U CN 204716360 U CN204716360 U CN 204716360U
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- urea
- utility
- model
- spray device
- catalytic muffler
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Abstract
The utility model discloses a kind of catalytic muffler, comprise the body establishing suction tude and outlet pipe, described body is connected with suction tude by trumpet-shaped gas diffusion part, described diffusion part is provided with urea-spray device, two catalyst converters arranged before and after being provided with in body, are provided with air and liquid mixer between described urea-spray device and catalyst converter.The utility model is rational in infrastructure, gas-liquid mixed is even, the innoxious catalytic effect of harmful gas is remarkable, state IV motor after the utility model is adopted to compare the state III of equal discharge capacity in Maximum Torque and peak output, the nearly lifting of nearly 10%, make power more powerful, oil consumption simultaneously reduces 5%-7%.Level of noise of the present utility model and discharge value meet state IV standard completely.
Description
Technical field
The utility model belongs to silencing apparatus, is specifically related to a kind of catalytic muffler (SCR).
Background technique
Along with the development of society, the requirement of people to environmental protection is more and more higher, controls also more and more tighter in the world with domestic to emission from vehicles.Existing silencing apparatus is limited in one's ability due to control discharge harmful gas, can not adapt to more and more stricter environmental protection standard, is therefore necessary that new generation meets the silencing apparatus of high request emission standard.
Model utility content
The purpose of this utility model is for prior art Problems existing, provides a kind of catalytic muffler that can reduce noise and noxious gas emission better.
The technical solution of the utility model is achieved in that
The catalytic muffler (SCR) that the utility model provides, comprise the body establishing suction tude and outlet pipe, described body is connected with suction tude by trumpet-shaped gas diffusion part, described diffusion part is provided with urea-spray device, two catalyst converters arranged before and after being provided with in body, are provided with air and liquid mixer between described urea-spray device and catalyst converter.
Described gas diffusion part comprises the first enlarging and the second enlarging that diffusion angle expands successively.
Described urea-spray device is located in described first enlarging, and the spray angle of urea-spray device is 38 ° ~ 45 °.
Described air and liquid mixer comprises cylinder, and the periphery of described cylinder is provided with into the pore of oblique line distribution.
Described catalyst converter adopts the cordierite honeycomb ceramic carrier being coated with catalyzer vanadic anhydride V2O5.
The interval of 8 ~ 10mm is provided with between described cordierite honeycomb ceramic carrier.
The beneficial effects of the utility model:
The utility model (SCR) is rational in infrastructure, and gas-liquid mixed is even, and the innoxious catalytic effect of harmful gas is remarkable, and determine Tianjin Suo Ke automobile test Co., Ltd of feeler mechanism through constitutional law and test, ESC, ETC emission test results is as follows:
Testing result meets state IV standard completely.
Adopt state IV motor after the utility model to compare the state III of equal discharge capacity in Maximum Torque and peak output, the nearly lifting of nearly 10%, makes power more powerful, and oil consumption simultaneously reduces 5%-7%.Level of noise of the present utility model and discharge value meet state IV standard completely.
The technical solution of the utility model is further illustrated below in conjunction with accompanying drawing.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model; Fig. 2 is the schematic diagram of air and liquid mixer in the utility model.
Embodiment
See Fig. 1, Fig. 2, the catalytic muffler (SCR) that the utility model provides, comprise the body 4 establishing suction tude 1 and outlet pipe 7, described body 4 is connected with suction tude 1 by trumpet-shaped gas diffusion part, gas diffusion part comprises the first enlarging 8 and the second enlarging 9 that diffusion angle expands successively, first enlarging 8 of described diffusion part is provided with urea-spray device 2, the spray angle α of urea-spray device 2 is 38 ° ~ 45 °, two catalyst converters 5 arranged before and after being provided with in body 4, 6, fill 2 at described urea-spray to put be provided with air and liquid mixer 3 between catalyst converter 5, air and liquid mixer 3 comprises cylinder 301, the periphery of cylinder 301 is provided with into the pore 302 of oblique line distribution, described catalyst converter 5,6 adopts the cordierite honeycomb ceramic carrier being coated with catalyzer vanadic anhydride V2O5, is provided with the interval L of 8 ~ 10mm between cordierite honeycomb ceramic carrier.
SCR(selective catalytic reduction) working principle:
The effect of SCR reduces the nitrogen oxide (NOX) in diesel engine exhaust.The utility model adopts mass concentration to be that the urea of 32.5% is as the cordierite honeycomb ceramic carrier of reducing agent and two coated catalysts (vanadic anhydride V2O5), during work, what in real time, in right amount, accurately controlled by urea liquid is ejected in gas diffusion part by urea-spray device 2, and spray angle is 38 °-45 °.First the urea be ejected in body can be decomposed into ammonia NH3 and carbon dioxide CO2, after the first enlarging 8 and the second enlarging 9 two enlarging water conservancy diversion, the velocity flow profile of gas can be improved, gas with enter the tail gas of silencing apparatus when through air and liquid mixer 3, generation straight air stream and swirling eddy are realized mixing completely, then the cordierite ceramic honeycomb carrier containing catalyst coat is evenly flowed to, the interval being provided with 8 ~ 10mm between cordierite honeycomb ceramic carrier can turbulization, harmful matter can be made fully to contact with catalyzer, by twice chemical reaction of former and later two carriers, under the effect of catalyzer vanadic anhydride V2O5, NH3 in tail gas can be reacted into nitrogen N 2 and water H2O with NOX, thus the NOX in tail gas is reduced into harmless nitrogen N 2, air is entered by outlet pipe.
Catalyst action principle is as follows:
NO+NO2+2NH3 → 2N2+3H2O (rapid response)
4NO+4NH3+O2 → 4N2+6H20
6NO2+8NH3 → 7N2+12H20。
Claims (6)
1. a catalytic muffler, comprise the body establishing suction tude and outlet pipe, described body is connected with suction tude by trumpet-shaped gas diffusion part, described diffusion part is provided with urea-spray device, it is characterized in that two catalyst converters arranged before and after being provided with in body, between described urea-spray device and catalyst converter, be provided with air and liquid mixer.
2. catalytic muffler according to claim 1, is characterized in that described gas diffusion part comprises the first enlarging and the second enlarging that diffusion angle expands successively.
3. catalytic muffler according to claim 2, is characterized in that described urea-spray device is located in described first enlarging, and the spray angle of urea-spray device is 38 ° ~ 45 °.
4. catalytic muffler according to claim 3, is characterized in that described air and liquid mixer comprises cylinder, and the periphery of described cylinder is provided with into the pore of oblique line distribution.
5. catalytic muffler according to claim 4, is characterized in that described catalyst converter adopts the cordierite honeycomb ceramic carrier being coated with catalyzer vanadic anhydride V2O5.
6. catalytic muffler according to claim 5, is characterized in that the interval being provided with 8 ~ 10mm between described cordierite honeycomb ceramic carrier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520318916.1U CN204716360U (en) | 2015-05-18 | 2015-05-18 | A kind of catalytic muffler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520318916.1U CN204716360U (en) | 2015-05-18 | 2015-05-18 | A kind of catalytic muffler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204716360U true CN204716360U (en) | 2015-10-21 |
Family
ID=54315363
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520318916.1U Expired - Fee Related CN204716360U (en) | 2015-05-18 | 2015-05-18 | A kind of catalytic muffler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204716360U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105257377A (en) * | 2015-10-30 | 2016-01-20 | 安徽全柴动力股份有限公司 | SCR after-treatment packaging structure for diesel engine |
-
2015
- 2015-05-18 CN CN201520318916.1U patent/CN204716360U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105257377A (en) * | 2015-10-30 | 2016-01-20 | 安徽全柴动力股份有限公司 | SCR after-treatment packaging structure for diesel engine |
| CN105257377B (en) * | 2015-10-30 | 2018-02-06 | 安徽全柴动力股份有限公司 | A kind of SCR post processings encapsulating structure used for diesel engine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151021 |