两级串联旋风分离器旋进涡核现象的数值模拟  

Numerical simulation on processing vortex core of a two-stage cyclone separator

作　　者：郭颖[1] 王建军[2] 林雅军 夏明川[3] 杨子晗 GUO Ying;WANG Jian-jun;LIN Ya-jun;XIA Ming-chuan;YANG Zi-han(College of Mechanical and Electronic Engineering,China University of Petroleum(East China),Qingdao 266580,China;College of New Energy,China University of Petroleum(East China),Qingdao 266580,China;Sinopec Qingdao Refining&Chemical Co.Ltd.,Qingdao 266500,China)

机构地区：[1]中国石油大学(华东)机电工程学院,山东青岛266580 [2]中国石油大学(华东)新能源学院,山东青岛266580 [3]中国石化青岛炼油化工有限责任公司,山东青岛266500

出　　处：《高校化学工程学报》2021年第2期229-235,共7页Journal of Chemical Engineering of Chinese Universities

摘　　要：针对旋风分离器的内部涡核随时间发生周期性振荡,采用雷诺应力模型(RSM)对两级串联旋风分离器内三维非稳态流场进行模拟计算,对比分析1、2级分离器内压力脉动规律。结果发现:1、2级分离器内脉动主频一致,但第2级分离器内存在较高的二倍频和三倍频;随着轴向高度的降低,1、2级旋进涡核的摆动幅度逐渐减小;入口气速的提高会增加1、2级分离器旋进涡核的频率及幅度。模拟结果与工业现场测得结果基本吻合。研究结果对两级串联旋风分离系统的改进有重要意义。In order to investigate the periodic pulsation caused by vortex core of cyclone separators,Reynolds stress model(RSM)was used to simulate the 3 D unsteady flow field of two-stage cyclone separators,and the pulsation characteristics of the first and second separators were analyzed.The results show that the main frequency of first separator is consistent with the second,but there are double and triple frequencies in the second separator.The radius of vortex core decreased with the decrease of axial height and the frequency and amplitude increased with the increase of inlet velocity.The results showed good agreement with on-site data and are helpful for the improvement of two-stage cyclone separators.

关 键 词：旋风分离器 旋进涡核 气固两相 数值模拟 

分 类 号：TE051.8[石油与天然气工程]