王斯民¹,宋晨¹,王家瑞¹,孙利娟¹,张早校¹,文键²

• 1:西安交通大学 化学工程与技术学院，陕西 西安 710049
• 2:西安交通大学 能源与动力工程学院，陕西 西安 710049

摘要(Abstract)：

为进一步提高FCC三旋细颗粒脱除效率，基于蒸汽相变原理，在低过饱和度下进行了FCC三旋细颗粒相变长大特性的实验，并采用静电低压冲击器（EIPI+）测量相变长大前后颗粒粒径分布，研究了热水温度、颗粒初始浓度及烟气流量对颗粒相变长大的影响。结果表明：提高热水温度可显著促进颗粒长大；颗粒的初始浓度对其长大效果的影响因热水温度而异，具有一定不确定性；烟气流量增大会抑制颗粒长大。在最优的实验条件下，细颗粒的算术平均粒径由初始的1.35增大到6.76 μm，已达FCC大三旋装置除尘的临界粒径，可进行工业分离。

关键词(KeyWords)： 蒸汽相变;细颗粒;长大特性;除尘效率

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金（51676146）。

作者(Author): 王斯民¹,宋晨¹,王家瑞¹,孙利娟¹,张早校¹,文键²

DOI: 10.3969/j.issn.1003-9015.2020.03.010

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