Forming and breaking the ceiling of inlet gas velocity regarding to separation efficiency of cyclone
作者机构：College of Chemical Engineering and TechnologyTaiyuan University of TechnologyTaiyuan030024China Avic Xinxiang Aviation Industry(Group)CoLtdXinxiang453002China School of Chemistry and Chemical EngineeringNorth University of ChinaTaiyuan030051China
出 版 物：《Particuology》 (颗粒学报（英文版）)
年 卷 期：2023年第79卷第8期
页 面：85-94页
核心收录：
学科分类：080704[工学-流体机械及工程] 080103[工学-流体力学] 08[工学] 0807[工学-动力工程及工程热物理] 0801[工学-力学（可授工学、理学学位）]
基 金：supported by Fundamental Research Program of Shanxi Province(No.202203021211164) supported by the National Natural Science Foundation of China(No.22108262) Shanxi Province Science Foundation for Youths(No.20210302124600) Shanxi Province Foundation for Returness(No.2022-138) Fund Program for the Scientific Activities of Selected Returned Overseas Professionals in Shanxi Province(No.20220014)
主 题：Cyclonese parator Inletgas velocity Back mixing escape Precession vortex core Axial velocity
摘 要：The maximum-efficiency inlet velocity(MEIV)is a ceiling of inlet gas velocity that defines separation efficiency during cyclone design and *** and computational fluid dynamics(CFD)simulation exhibited that an apex cone at the dust outlet can break the ceiling and improve the sepa-ration *** phenomenon is closely related to the effect of excessive high inlet gas velocity on the back-mixing escape of fine particles,which is the final result of back mixing,entrainment by the rapid upward airflow,and secondary separation of the inner *** the center of the inner vortex,the airflow rotates slowly and moves rapidly *** elevator type of airflow delivers re-entrained particles to the vortex finder.A higher inlet gas velocity accelerates the elevator,causing more entrained particles to *** explains the decrease in efficiency at an excessively high inlet gas *** an apex cone is installed at the dust outlet,the back-mixing is significantly weakened because the vortex core is bounded to the center of separator,while the transport effect of rapid upward airflow is weakened by the decrease in axial velocity in the ***,particle escape is weakened even at excessive high inlet gas ***,the centrifugal effect is enhanced because of increased tangential velocity of the gas and ***,the ceiling of inlet gas velocity is broken.
维普期刊数据库