基于RSM的呼吸性粉尘旋风分离器分离效能数值模拟研究
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摘要
为研究满足BMRC曲线的呼吸性粉尘旋风分离器,利用流体力学软件Fluent 6.3对不同结构尺寸旋风分离器内部流场进行数值模拟,并基于响应曲面法、利用统计软件Design-Expert得到了呼吸性粉尘旋风分离器分离效能二次多项式预测模型。通过方差分析及回归方程系数显著性检验可知呼吸性粉尘旋风分离器筒体高度、排气管直径及插入深度对其分离效能有显著影响。根据预测模型加工旋风分离器样件并作实测验证,发现样件分离效能与BMRC曲线标准差为3.16%,小于5%。使用响应曲面法研究呼吸性粉尘旋风分离器分离效能可提高设计效率,保证计算模型可靠性,同时为满足EN481,PM10及PM2.5分离器的设计提供参考。
In order to study the respirable dust cyclone separator,that meet the BMRC curve,the inner flow fields of cyclone separators with various geometries were simulated by commercial computational fluid dynamics( CFD) software Fluent 6. 3. Based on the response surface methodology and using the statistical software Design-Expert,the quadratic polynomial prediction model of cyclone sampling efficiency was obtained. The results show that the tube length,vortex finder diameter and vortex finder height have significant effect on the cyclone performance. The sample cyclone separator was made based on prediction model and tested,it was found that the standard deviations of cyclone separator designed by RSM and BMRC curve was 3. 16% which was less than 5%. The study shows that RSM not only improves work efficiency,but also ensures the reliability of calculation model,at the same time,provides a reference for the design of separator to meet the requirements of EN481,PM10 and PM2. 5.
In order to study the respirable dust cyclone separator,that meet the BMRC curve,the inner flow fields of cyclone separators with various geometries were simulated by commercial computational fluid dynamics( CFD) software Fluent 6. 3. Based on the response surface methodology and using the statistical software Design-Expert,the quadratic polynomial prediction model of cyclone sampling efficiency was obtained. The results show that the tube length,vortex finder diameter and vortex finder height have significant effect on the cyclone performance. The sample cyclone separator was made based on prediction model and tested,it was found that the standard deviations of cyclone separator designed by RSM and BMRC curve was 3. 16% which was less than 5%. The study shows that RSM not only improves work efficiency,but also ensures the reliability of calculation model,at the same time,provides a reference for the design of separator to meet the requirements of EN481,PM10 and PM2. 5.
引文
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[16]王晶.基于响应曲面法的多响应稳健性参数优化方法研究[D].天津:天津大学,2009.Wang Jing.Robust parameter optimization for multi-response using response surface methodology[D].Tianjin:Tianjin University,2009.
[2]霍夫曼A C,斯坦因L E.旋风分离器-原理、设计和工程应用[M].北京:化学工业出版社,2004.Alex C Hoffmann,Louis E Stein.Gas cyclones and swirl tubes,priciples,design and operation[M].Beijing:Chemistry Industry Press,2004.
[3]孟超,赵敬,刘璐.个体采样器旋风式粉尘采样头的设计验证[J].职业与健康,2010,26(5):1110-1113.Meng Chao,Zhao Jing,Liu Lu.Design verification test on cyclone sampling head of personal sampling pump[J].Occup.and Health,2010,26(5):1110-1113.
[4]Mousa Vian S M,Najafi A F.Numerical simulation of gas-liquid—solid nows in a hydro cyclone separator[J].Archive of Applied Mechanics,2009,79(5):395-405.
[5]Azadi M,Mohebbi A H.A CFD study of effect of cyclone size on its performance parameters[J].Journal of Hazardous Materials,2010,182(6):835-841.
[6]Sepehr Sadighi,Mansoor Shirvani,Mansooreh Esmaeli,et al.Improving the removal efficiency of cyclones by recycle stream[J].Chemical Engineering&Technology,2006,10(29):1242-1246.
[7]Jiao Jinyu,Zheng Ying,Sun Guogang,et al.Study of the separation efficiency and the flow field of a dynamic cyclone[J].Separation and Purification Technology,2006,49:157-166.
[8]Bardin-Monnier N,Altmeyer S,Schreiber V,et al.Comparison of two methods of cyclones simulation:semiempiric model and CFD.Example of a specific cyclone design[J].Asia-Pac.J.Chem.Eng.,2013,8:93-103.
[9]孟超,刘璐.旋风式采样头预捕集器的设计研究[J].中国卫生工程学,2009,4(8):68-71.Meng Chao,Liu Lu.Design on cyclone separator of cyclone sampling head[J].Chinese Journal of Public Health Engineering,2009,4(8):68-71.
[10]孙胜,周昊,邱坤赞,等.入口结构对旋风分离器分离效率的影响[J].动力工程学报,2013,33(5):364-369.Sun Sheng,Zhou Hao,Qiu Kunzan,et al.Influence of inlet structure on separation efficiency of cyclone separators[J].Chinese Journal of Power Engineering,2013,33(5):364-369.
[11]杨景轩,马强,孙国刚.旋风分离器排气管最佳插入深度的实验与分析[J].环境工程学报,2013(7):2673-2677.Yang Jingxuan,Ma Qiang,Sun Guogang.Experiment and analysis of vortex finder optimum length in cyclone separator[J].Chinese Journal of Environmental Engineering,2013(7):2673-2677.
[12]钱付平,章名耀.温度对旋风分离器分离性能影响的数值研究[J].动力工程,2006(4):253-257.Qian Fuping,Zhang Mingyao.Numerical study of the influence of temperature on separation performance of cyclone separators[J].Chinese Journal of Power Engineering,2006(4):253-257.
[13]Li Changjian,Chen Xueli.Structure optimization of cyclone separator with radial-inlet based on response surface methodology[J].Journal of Chemical Engineering of Chinese Universities,2013,27(1):24-31.
[14]Lin Y C,Chyang C S.Radial gas mixing in a fluidized bed using response surface methodology[J].Powder Technology,2003,131(1):48-55.
[15]Hasan D M,Salah N C,Melo D,et al.Simulation and response surface analysis for the optimization of a threephase catalytic slurry reactor[J].Chemical Engineering and Processing,2005,44(3):335-343.
[16]王晶.基于响应曲面法的多响应稳健性参数优化方法研究[D].天津:天津大学,2009.Wang Jing.Robust parameter optimization for multi-response using response surface methodology[D].Tianjin:Tianjin University,2009.