SCR UNIFORMITY EVALUATION METHOD AND IMPACT STUDY
With the increasingly stringent requirements for NOx emission and NH3 leakage in China's diesel engine pollutant emission standards, it is of great practical importance to study the gas velocity uniformity and NH3 distribution uniformity at the front end of Urea-SCR carriers. To study the gas v...
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| Veröffentlicht in: | Fresenius environmental bulletin 2022-10, Vol.31 (10), p.10367 |
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| container_title | Fresenius environmental bulletin |
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| creator | Sun, Ke Huang, Chang Shi, Dailong Li, Guoxiang Zhao, Haiyang Bai, Shuzhan |
| description | With the increasingly stringent requirements for NOx emission and NH3 leakage in China's diesel engine pollutant emission standards, it is of great practical importance to study the gas velocity uniformity and NH3 distribution uniformity at the front end of Urea-SCR carriers. To study the gas velocity and NH3 distribution at the front end of SCR carrier, a method is proposed to accurately evaluate the velocity uniformity and NH3 distribution uniformity, and the method is written into Star-CCM+ Report Manager to simulate and calculate the uniformity index, and an SCR single-point conversion efficiency test is conducted to verify the accuracy of the method. By comparing the uniformity index calculated by simulation with the experimentally measured conversion efficiency, the results show that the method can accurately evaluate the front-end gas velocity and NH3 distribution uniformity of SCR carriers, and provide a reference for the study of front-end gas velocity and NH3distribution of Urea-SCR carriers for diesel engines. Finally, the above uniformity evaluation method was used to simulate the factors influencing the front-end velocity uniformity of SCR carriers, and the results showed that the lower the exhaust flow rate and the lower the temperature, the better the front-end velocity uniformity of SCR carriers. |
| format | Article |
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To study the gas velocity and NH3 distribution at the front end of SCR carrier, a method is proposed to accurately evaluate the velocity uniformity and NH3 distribution uniformity, and the method is written into Star-CCM+ Report Manager to simulate and calculate the uniformity index, and an SCR single-point conversion efficiency test is conducted to verify the accuracy of the method. By comparing the uniformity index calculated by simulation with the experimentally measured conversion efficiency, the results show that the method can accurately evaluate the front-end gas velocity and NH3 distribution uniformity of SCR carriers, and provide a reference for the study of front-end gas velocity and NH3distribution of Urea-SCR carriers for diesel engines. Finally, the above uniformity evaluation method was used to simulate the factors influencing the front-end velocity uniformity of SCR carriers, and the results showed that the lower the exhaust flow rate and the lower the temperature, the better the front-end velocity uniformity of SCR carriers.</description><identifier>ISSN: 1018-4619</identifier><identifier>EISSN: 1610-2304</identifier><language>eng</language><publisher>Freising: Parlar Scientific Publications</publisher><subject>Air pollution ; Ammonia ; Diesel engines ; Emission analysis ; Emission standards ; Emissions ; Evaluation ; Flow rates ; Flow velocity ; Internal combustion engines ; Mathematical analysis ; Pollutants ; Simulation ; Urea ; Velocity</subject><ispartof>Fresenius environmental bulletin, 2022-10, Vol.31 (10), p.10367</ispartof><rights>Copyright Parlar Scientific Publications Oct 2022</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,776,780</link.rule.ids></links><search><creatorcontrib>Sun, Ke</creatorcontrib><creatorcontrib>Huang, Chang</creatorcontrib><creatorcontrib>Shi, Dailong</creatorcontrib><creatorcontrib>Li, Guoxiang</creatorcontrib><creatorcontrib>Zhao, Haiyang</creatorcontrib><creatorcontrib>Bai, Shuzhan</creatorcontrib><title>SCR UNIFORMITY EVALUATION METHOD AND IMPACT STUDY</title><title>Fresenius environmental bulletin</title><description>With the increasingly stringent requirements for NOx emission and NH3 leakage in China's diesel engine pollutant emission standards, it is of great practical importance to study the gas velocity uniformity and NH3 distribution uniformity at the front end of Urea-SCR carriers. To study the gas velocity and NH3 distribution at the front end of SCR carrier, a method is proposed to accurately evaluate the velocity uniformity and NH3 distribution uniformity, and the method is written into Star-CCM+ Report Manager to simulate and calculate the uniformity index, and an SCR single-point conversion efficiency test is conducted to verify the accuracy of the method. By comparing the uniformity index calculated by simulation with the experimentally measured conversion efficiency, the results show that the method can accurately evaluate the front-end gas velocity and NH3 distribution uniformity of SCR carriers, and provide a reference for the study of front-end gas velocity and NH3distribution of Urea-SCR carriers for diesel engines. Finally, the above uniformity evaluation method was used to simulate the factors influencing the front-end velocity uniformity of SCR carriers, and the results showed that the lower the exhaust flow rate and the lower the temperature, the better the front-end velocity uniformity of SCR carriers.</description><subject>Air pollution</subject><subject>Ammonia</subject><subject>Diesel engines</subject><subject>Emission analysis</subject><subject>Emission standards</subject><subject>Emissions</subject><subject>Evaluation</subject><subject>Flow rates</subject><subject>Flow velocity</subject><subject>Internal combustion engines</subject><subject>Mathematical analysis</subject><subject>Pollutants</subject><subject>Simulation</subject><subject>Urea</subject><subject>Velocity</subject><issn>1018-4619</issn><issn>1610-2304</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2022</creationdate><recordtype>article</recordtype><recordid>eNpjYuA0NDM00DUyNjBhAbINDC10TcwMLTkYeIuLswyAwMzI3MjMmJPBMNg5SCHUz9PNP8jXMyRSwTXM0SfUMcTT30_B1zXEw99FwdHPRcHTN8DROUQhOCTUJZKHgTUtMac4lRdKczMou7mGOHvoFhTlF5amFpfEZ-WXFuUBpeKBdhgZW5iZGZsZE6cKALS5MH0</recordid><startdate>20221001</startdate><enddate>20221001</enddate><creator>Sun, Ke</creator><creator>Huang, Chang</creator><creator>Shi, Dailong</creator><creator>Li, Guoxiang</creator><creator>Zhao, Haiyang</creator><creator>Bai, Shuzhan</creator><general>Parlar Scientific Publications</general><scope>7ST</scope><scope>7T7</scope><scope>7U7</scope><scope>8FD</scope><scope>C1K</scope><scope>FR3</scope><scope>P64</scope><scope>SOI</scope></search><sort><creationdate>20221001</creationdate><title>SCR UNIFORMITY EVALUATION METHOD AND IMPACT STUDY</title><author>Sun, Ke ; Huang, Chang ; Shi, Dailong ; Li, Guoxiang ; Zhao, Haiyang ; Bai, Shuzhan</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-proquest_journals_27223866363</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2022</creationdate><topic>Air pollution</topic><topic>Ammonia</topic><topic>Diesel engines</topic><topic>Emission analysis</topic><topic>Emission standards</topic><topic>Emissions</topic><topic>Evaluation</topic><topic>Flow rates</topic><topic>Flow velocity</topic><topic>Internal combustion engines</topic><topic>Mathematical analysis</topic><topic>Pollutants</topic><topic>Simulation</topic><topic>Urea</topic><topic>Velocity</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Sun, Ke</creatorcontrib><creatorcontrib>Huang, Chang</creatorcontrib><creatorcontrib>Shi, Dailong</creatorcontrib><creatorcontrib>Li, Guoxiang</creatorcontrib><creatorcontrib>Zhao, Haiyang</creatorcontrib><creatorcontrib>Bai, Shuzhan</creatorcontrib><collection>Environment Abstracts</collection><collection>Industrial and Applied Microbiology Abstracts (Microbiology A)</collection><collection>Toxicology Abstracts</collection><collection>Technology Research Database</collection><collection>Environmental Sciences and Pollution Management</collection><collection>Engineering Research Database</collection><collection>Biotechnology and BioEngineering Abstracts</collection><collection>Environment Abstracts</collection><jtitle>Fresenius environmental bulletin</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Sun, Ke</au><au>Huang, Chang</au><au>Shi, Dailong</au><au>Li, Guoxiang</au><au>Zhao, Haiyang</au><au>Bai, Shuzhan</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>SCR UNIFORMITY EVALUATION METHOD AND IMPACT STUDY</atitle><jtitle>Fresenius environmental bulletin</jtitle><date>2022-10-01</date><risdate>2022</risdate><volume>31</volume><issue>10</issue><spage>10367</spage><pages>10367-</pages><issn>1018-4619</issn><eissn>1610-2304</eissn><abstract>With the increasingly stringent requirements for NOx emission and NH3 leakage in China's diesel engine pollutant emission standards, it is of great practical importance to study the gas velocity uniformity and NH3 distribution uniformity at the front end of Urea-SCR carriers. To study the gas velocity and NH3 distribution at the front end of SCR carrier, a method is proposed to accurately evaluate the velocity uniformity and NH3 distribution uniformity, and the method is written into Star-CCM+ Report Manager to simulate and calculate the uniformity index, and an SCR single-point conversion efficiency test is conducted to verify the accuracy of the method. By comparing the uniformity index calculated by simulation with the experimentally measured conversion efficiency, the results show that the method can accurately evaluate the front-end gas velocity and NH3 distribution uniformity of SCR carriers, and provide a reference for the study of front-end gas velocity and NH3distribution of Urea-SCR carriers for diesel engines. Finally, the above uniformity evaluation method was used to simulate the factors influencing the front-end velocity uniformity of SCR carriers, and the results showed that the lower the exhaust flow rate and the lower the temperature, the better the front-end velocity uniformity of SCR carriers.</abstract><cop>Freising</cop><pub>Parlar Scientific Publications</pub></addata></record> |
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| ispartof | Fresenius environmental bulletin, 2022-10, Vol.31 (10), p.10367 |
| issn | 1018-4619 1610-2304 |
| language | eng |
| recordid | cdi_proquest_journals_2722386636 |
| source | EZB-FREE-00999 freely available EZB journals |
| subjects | Air pollution Ammonia Diesel engines Emission analysis Emission standards Emissions Evaluation Flow rates Flow velocity Internal combustion engines Mathematical analysis Pollutants Simulation Urea Velocity |
| title | SCR UNIFORMITY EVALUATION METHOD AND IMPACT STUDY |
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