叶片式气液分离内件数值模拟及对比分析Numerical Simulation and Comparative Analysis of Vane Type Gas-Liquid Separation Elements
文晓龙,冯森森,袁淑霞,何义明,王海鹏
摘要(Abstract):
气液分离广泛采用叶片式分离元件,叶片形式、叶片间距、叶片高度、液滴粒径、液滴含量和主体流速等因素均影响元件的分离性能。采用计算流体动力学(CFD)模拟软件ANSYS FLUENT对3种叶片式气液分离元件(NH-TP、NC-TP和TP叶片)进行数值模拟及对比分析,得到各因素对分离效率及压降的影响,并对叶片的工况适应性进行了分析。结果表明:NH-TP的间距应大于20 mm,否则容易导致压差过大,而NC-TP和TP间距可取10 mm;液滴粒径大于20μm时在各种速度下均可获得较高分离效率,而小液滴仅在理想重力分离和理想惯性分离工况下较高;惯性分离速度下的分离效率与叶片高度无关,主体分离速度低时分离效率随着板高增加而降低;不同形式叶片的最差工况速度不同,但NH-TP在最差工况下仍能保持较高分离效率,对工况的适应能力最好,开槽的NC-TP次之,TP叶片适应能力最差。
关键词(KeyWords): 气液分离;液滴粒径;两相流动;分离效率;压差
基金项目(Foundation): 蓝科高新科学技术发展基金项目(17HGJ002)
作者(Author): 文晓龙,冯森森,袁淑霞,何义明,王海鹏
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