文献类型：期刊文献

中文题名：筒锥比对旋风分离器切割直径及流场的影响

英文题名：Cutting diameter for solid particles and flow field in cyclones with different cylinder-cone height ratio

作者：李圣楠[1];武斌[1];陈葵[1];纪利俊[1];吴艳阳[1]

机构：[1]华东理工大学化工学院,上海200327

年份：2025

卷号：42

期号：2

起止页码：135

中文期刊名：化学工业与工程

外文期刊名：Chemical Industry and Engineering

收录：;北大核心:【北大核心2023】；

基金：上海市科学技术委员会委发展计划(18595800900)。

语种：中文

中文关键词：旋风分离器;筒锥比;压降;切割直径

外文关键词：cyclone separator;cylinder-cone ratio;pressure drop;cutting diameter

摘要：旋风分离器的结构对于其压力降、颗粒分离截留性能有重要影响。对含尘尾气进行分离时,准确掌握旋风分离器的结构参数和操作条件对气固分离效率的影响,是采用优化结构和操作的前提。采用RSM-DPM模型,模拟考察了一定总高度下,不同筒体高度与锥体高度比例下旋风分离器中颗粒切割直径、压强分布和切向速度等的变化规律。研究分析发现,进出口压降随筒锥比增加总体呈减小趋势;随着筒锥比变化,切向速度分布与设备的几何中心线有小幅的偏移;筒锥段高度比对颗粒切割直径的影响规律,在不同的进口气速下有显著的差别。入口气速小于12 m·s^(-1)时,较小的筒锥比更有利于分离;当入口气速大于12 m·s^(-1)时,对于较小筒锥比的构型(小于2.50),适当增加筒锥比对分离更有利,而当筒锥比大于3时,切割直径基本不随筒锥比的改变而改变。针对不同的进气流量,选择合适的筒锥比,有助于得到较高的分离效率;对于高进气流量和低进气流量,2.50和0.85的筒锥比分别是较适宜的结构方案。
Geometric configuration of a cyclone separator has an important influence on its pressure drop and particle separation performance.In separation of dust-laden tail gas,accurate understanding of the impact of configuration parameters and operating conditions of a cyclone separator on separation efficiency for solid particles is the premise for optimized structure and operation.RSM-DPM model was used to sim-ulate and investigate the variation of particle cutting diameter,pressure and tangential velocity profile in the cyclone separator under different cylinder-cone ratios while maintaining a constant total height.It has been established that pressure drop between the inlet and outlet tends to decline with the increase of cyl-inder-cone ratio.Profiles for tangential velocity exhibit slight deviation from symmetric centerline of cy-clones with changes of the cylinder-cone ratio.The effect of cylinder-cone ratio on cutting diameter for solid particles exhibits different mode under different range of inlet gas velocity.When inlet gas velocity is less than 12 m·s^(-1),a smaller cylinder-cone ratio is more conducive to separation.When inlet gas ve-locity is greater than 12 m·s^(-1),for a configuration with a small cylinder-cone ratio(less than 2.50),an appropriate increase in the cylinder-cone ratio is more favorable to separation,and when the cylinder-cone ratio is greater than 3,the cutting diameter barely changes with the cylinder-cone ratio.Aiming at different inlet flow rates,proper choice of the cylinder-cone ratio will help to obtain higher separation effi-ciency.For high and a low inlet gas flowrate,cylinder-cone ratio of 2.50 and 0.85 are suitable configu-ration options respectively.