流体机械

2018, v.46;No.558(12) 32-38

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基于响应面法的旋风分离器结构参数的优化
The Structure Parameters Optimization of Cyclone Separator Based on Response Surface Methodology

张勇;周忠贺;蒋明虎;邢雷;
ZHANG Yong;ZHOU Zhong-he;JIANG Ming-hu;XING Lei;Northeast Petroleum University;Heilongjiang Key Laboratory of Petroleum and Petrochemical Multiphase Treatment and Pollution Prevention;

摘要(Abstract):

目前,旋风分离器的结构优化主要局限于控制变量法的单因素优化,不能准确反映综合因素条件下旋风分离器的分离效率,且结构间的细微变化及交互性难以操控,很难进一步提高其分离效率。为解决此问题,以催化裂化装置中的一级旋风分离器为研究对象,提出了基于响应面法的参数优化方法。以对分离效率影响显著的锥管段倾斜角度α、排气管插入深度s和排气管直径De为设计变量,以分离效率和压降为目标函数,优化了旋风分离器的结构参数。结果表明:利用响应面优化法将旋风分离器的分离效率由原来84.3%提升到90.4%,并对比分析了优化前后的速度、压降、分级分离效率等;响应面优化法可从全局角度智能的对结构参数进行优化组合,缩短CAD建模及网格划分时间,并可实现多参数条件下交互性的同时优化,有效提高工作效率;通过数值模拟与试验证明优化后的旋风分离器分离效率强于优化前,优化后的旋风分离器速度分布规律对称性好、速度差值大、分离效率高,同时能完成比优化前更小粒径(粒径=12μm)的完全分离任务。
At present,the structural optimization of the cyclone separator is mainly limited to the single-factor optimization of the control variable method,which can not accurately reflect the separation efficiency of the cyclone separator under the comprehensive factor condition,and the subtle changes in the structure and the interaction are difficult to control,therefore,it is difficult to further improve its separation efficiency. In order to solve this problem,a parameter optimization method based on response surface method was proposed for the first stage cyclone separator in catalytic cracking unit. The structural parameters of the cyclone separator were optimized by using the inclination angle α of taper pipe section,the inserting depth s of the exhaust pipe and the diameter De of the exhaust pipe,which have significant influence on separation efficiency,as the design variables and by using the separation efficiency and the pressure drop as the objective function. The results show that the efficiency of the cyclone separator was increased from the original 84.3% to 90.4% by using the response surface optimization method,and the velocity,pressure drop and separation efficiency before and after optimization were compared and analyzed. The response surface optimization method can intelligently optimize the combination of structural parameters from global perspective,shorten the CAD modeling and grid division time,and can achieve interactive optimization at the same time under multi-parameter conditions,effectively improving the efficiency;through numerical simulation and test, it was proved that the separation efficiency of optimized cyclone separator was better than that before optimization,the optimized cyclone separator has good symmetry of the velocity distribution,big speed difference and high separation efficiency,and can complete full separation task of smaller particles(particle size =12 μm) those before optimization.

关键词(KeyWords): 响应面法;参数优化;旋风分离器;目标函数;分离性能
response surface method;parameter optimization;cyclone separator;target function;separation performance

Abstract:

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基金项目(Foundation): 国家高科技研究和发展计划(863项目)(2012AA061303);; 东北石油大学培育基金项目(NEPUPY-1-15);东北石油大学青年基金项目(20132322110002)

作者(Author): 张勇;周忠贺;蒋明虎;邢雷;
ZHANG Yong;ZHOU Zhong-he;JIANG Ming-hu;XING Lei;Northeast Petroleum University;Heilongjiang Key Laboratory of Petroleum and Petrochemical Multiphase Treatment and Pollution Prevention;

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