GUO Zhongshan^1,2,YUAN Shiwei³,SUN Guogang³,WANG Tiefeng¹,FENG Liuhai⁴, MEN Zhuowu⁴,YANG Likun²,WANG Feng²

(1.Department of Chemical Engineering,Tsinghua University,Beijing 100084,China;2.National Energy Group Ningxia Coal Industry Co.,Ltd.,Yinchuan 750411,China;3.College of Mechanical and Storage Engineering,China University of Petroleum (Beijing),Beijing 102249,China;4.Beijing Low Carbon Clean Energy Research Institute,Beijing 102209,China)

Abstract:The pressure drop and internal flow field of cyclone separator were studied by experiment and numerical simulation when discharge blockage and dipleg leakage occurred.The relationship between the dipleg leakage rate and pressure drop of cyclone separator was comprehensively analyzed.According to the mean value of the separator pressure drop and the dominant frequency characteristics of the signal,a fast diagnosis method for identifying the discharge blockage and the dipleg leakage fault was determined.The results show that the discharge blockage increases the pressure drop between inlet and outlet of cyclone separator.The higher the blockage position is,the greater the mean value of pressure drop of the separator is,and the fluctuation and dominant frequency value of pressure drop signal also increase gradually.With the increasing of the dipleg leakage rate,the average pressure drop during the separator decreases slightly,and the dominant frequency value of the pressure drop signal is basically unchanged.It is put up that the method for rapid diagnosis and identification of separator faults is as follows that if the deterioration of separation efficiency is accompanied by the increase of mean pressure drop and signal frequency,the discharge blockage can be judged.If the time average pressure drop drops slightly and the dominant frequency value of the signal is basically unchanged,it can be judged as dipleg leakage.

Keywords:cyclone separator;discharge blockage;dipleg leakage;pressure drop;fault diagnosis

中图分类号：TQ545                              文献标志码：A

文章编号：1008-5548(2022)04-0109-09

DOI:10.13732/j.issn.1008-5548.2022.04.012

收稿日期： 2022-01-02， 修回日期：2022-06-01，在线出版时间：2022-06-22。

基金项目：国家重点研发计划资助项目，编号：2017YFB0602500；宁夏回族自治区重点研发计划资助项目，编号：2019BFH02016。

第一作者简介：郭中山(1966—)，男，教授级高级工程师，博士，研究方向为多相流反应器的开发和工业应用。E-mail:15010271@chnenergy.com.cn。

通信作者简介：王铁峰(1976—)，男，教授，博士，研究方向为清洁能源化工、非均相催化、多相流反应器和计算流体力学。E-mail:wangtf@tsinghua.edu.cn。门卓武(1968—)，男，教授级高级工程师，博士，研究方向为煤化工及石油加工技术开发和工业应用。E-mail:zhuowu.men@chnenergy.com.cn。