Effects of Optimized Operating Parameters on Combustion Characteristics and NO_(x)Emissions of a Burner based on Orthogonal Analysis

查看全文 作　　者：XU [1,2]Qian;AKKURT [3]Nevzat;YANG [1]Gang;ZHU [1]Lidong;SHI [1]Kejian;WANG [1]Kang;ZOU [1]Zhenwei;LIU [1]Zhihui;WANG [4]Jiulong;DU [5]Zhiwei

机构地区：[1]School of Energy and Environmental Engineering,University of Science and Technology Beijing,Beijing 100083,China;[2]Beijing Key Laboratory for Energy Conservation and Emission Reduction for Metallurgical Industry,Beijing 100083,China;[3]Department of Mechanical Engineering,Munzur University,Tunceli 62000,Turkey;[4]Department of Big Data Technology and Application Development,Computer Network Information Center,Chinese Academy of Sciences,Beijing 100190,China;[5]AVIC Xinxiang Aviation Industry(group)CO.,LTD,Henan 453002,China

出　　处：《Journal of Thermal Science》索引2021年第30卷第4期,共12页

基　　金：supported by the Fundamental Research Funds for the Central Universities of China(FRF-TP-18-074A1,FRF-BD-20-09A);the China Postdoctoral Science Foundation(No.2019M650491);the National Natural Science Foundation of China(No.11801029)。 摘　　要：To optimize the structure of the burner,improve the combustion performance,and reduce the emission of NO_(x),a self-circulating low NO_(x)combustion technology was used to design a new type of flue gas self-circulating low NO_(x)burner.Based on previous research on the numerical model of combustion and the composition of mixed gas on combustion and NO_(x)emissions,the effect of various factors on the ejection coefficient of the flue gas self-circulating structure was analyzed using the orthogonal test method,and the burner operating parameters,such as preheating temperature and excess air coefficient,were deeply studied through the three-dimensional finite element numerical model in this paper.The results show that the diameter ratio of the nozzle and the length of the cylindrical section of the flue gas self-circulating structure have great influence on its ejection and mixing ability.The optimal ejection coefficient was 0.4829.Overall,the amount of NO_(x)emissions greatly increased from 6.23×10^(-6)(volume fraction)at the preheating temperature 973 K to 3.5×10^(-3)at preheating temperature 1573 K.When the excess air coefficient decreased from 1.2 to 1,the maximum combustion temperature decreased from 2036.3 K to 1954.22 K,and the NO_(x)emissions decreased from 352.29×10^(-6)to 159.73×10^(-6). 关键词：preheating temperature excess air coefficient self-circulating flue gas low oxygen combustion low-NO_(x)emissions

相关文献

参考文献（48）
引证文献（0）
耦合文献（60）

参考文献(48)

耦合文献(60)

互联网出版许可证新出网证(渝)字10号全国400电话 - 免长途话费

Effects of Optimized Operating Parameters on Combustion Characteristics and NO_(x)Emissions of a Burner based on Orthogonal Analysis

参考文献(48)

耦合文献(60)

用户提示