Self-cleaning effect and secondary swirling clean gas for suppressing particle deposition on vortex finder of gas cyclones
作者机构：School of Mechanical EngineeringHebei University of Science&TechnologyShijiazhuang050018China
出 版 物：《Particuology》 (颗粒学报（英文版）)
年 卷 期：2024年第90卷第7期
页 面：72-87页
核心收录：
学科分类：080704[工学-流体机械及工程] 0817[工学-化学工程与技术] 080103[工学-流体力学] 08[工学] 0807[工学-动力工程及工程热物理] 0805[工学-材料科学与工程（可授工学、理学学位）] 0801[工学-力学（可授工学、理学学位）]
基 金：the National Natural Science Foundation of China(grant No.51904088) Scientific Research Project of Colleges and Universities in Hebei Province(grant No.BJ2020042)
主 题：Cyclones Vortex finder Particle deposition Gas purge effect Self-cleaning effect
摘 要：In order to suppressing the particle deposition on vortex finder,a series of gas cyclones with the secondary swirling clean gas were developed inspired by the gas purge *** of the width and extension length of the flow channel as well as the secondary inlet velocity and running time on the particle deposition pattern,the deposited particle mass and the cyclones performance were experimentally investigated,*** results show that the ultrafine particles(Stokes number Stk0.0358)are mainly loose deposited on the walls under the secondary *** to the conventional cyclone with single tangential inlet,the total deposited particle mass of the improved cyclone has a maximum reduction more than 60%,and the collecting efficiency is increased up to 97.5%under the basically same pressure *** corresponding no-deposition area is increased by about 13%,and remains constant in spite of extending the running ***,an interesting phenomenon namedself-cleaning effectof the vortex finder was captured for the gas cyclones,and mechanism of the secondary clean gas on the particle deposition is preliminarily *** results can deepen the understanding of the particle deposition on the vortex finder and guide the design of the anti-coking gas cyclones.
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