YANG Zhiyong¹，WANG Jing¹，CAI Xiangli¹，WU Jinxi¹，WEI Yaodong²

(1. College of Chemical Engineering,Xinjiang Engineering Institute,Urumqi 830092,China;2. Faculty of Engineering China University of Petroleum-Beijing，Karamay 834000,China)

Abstract: In order to study the failure or fault of cyclone separator caused by abnormal change of process parameters in fluid catalytic cracking unit (FCCU),and the large amount of catalyst run-off caused by them,the process parameters affecting separation operation of cyclone separator and catalyst run-off were summarized,and the parameters affecting process fault were analyzed,such as inlet velocity,inlet concentration,rapid fluctuation of system pressure,coking blockage of dipleg,poor discharge of feed leg outlet,and physical properties of catalyst. By checking the parameters of the cyclone separator,the fault reason and location of the cyclone separator can be effectively diagnosed.

Keywords:fluid catalytic cracking unit; cyclone; fault diagnosis

中图分类号：TQ051.8                             文献标志码：A

文章编号：1008-5548(2020)01-0075-06

DOI:10.13732/j.issn.1008-5548.2020.01.012

收稿日期： 2019-01-24，修回日期：2019-04-26，在线出版时间：2019-07-25 16:16。

基金项目：国家自然科学基金项目，编号：21566038；21776305。

第一作者简介：杨智勇(1969—)，男，硕士，副教授，研究方向为气、固两相流分离，化工过程模拟与强化。E-mail：427787458@qq.com。