运行参数对双排料管下排气式旋风分离器的性能影响  

Effect of operating parameters on performance of uniflow cyclone with two-particle outlets

作　　者：孙思敏 郭帅 王小芳[1,2] 朱治平 SUN Simin;GUO Shuai;WANG Xiaofang;ZHU Zhiping(Institute of Engineering Thermophysics,Chinese Academy of Sciences,Beijing 100190,China;School of Engineering Science,University of Chinese Academy of Sciences,Beijing 100049,China)

机构地区：[1]中国科学院工程热物理研究所,北京100190 [2]中国科学院大学工程科学学院,北京100049

出　　处：《中国粉体技术》2021年第2期54-62,共9页China Powder Science and Technology

基　　金：中国科学院科技成果转移转化重点专项,编号:Y929030401。

摘　　要：设计单因素变量试验,考察双排料管下排气式旋风分离器的关键运行参数分离器进口气体速度vc、入口固气质量比ω、喷嘴内环气体速度vb对分离器进口-排料管压力损失ΔP1、ΔP2,分离器进口-排气管压力损失ΔP3,分离效率η,漏气率δ的影响。结果表明:vc是影响分离器压力分布的主要因素,随着vc由14.4 m/s增大到25.4 m/s,ΔP3从0.70 k Pa增大至2.12 k Pa,η从85.4%增大至89.5%,δ逐渐增大;随着ω的增加,ΔP1、ΔP2显著减小,ω为0.08是ΔP1、ΔP2降低幅度减小的转折点;当vb小于14.0 m/s时,随着vb增大,δ大幅度减小;当vb过高时,严重影响系统的流场分布,δ变为负值,同时η减小至85.9%。This paper designed a single factor variable test on performance of uniflow cyclone. The effects of the key operating parameters of the uniflow cyclone with two-particle outlets,the separator inlet air velocity vc,the inlet solid-gas mass ratio ω,the nozzle inlet velocity vb on cyclone inlet-particle outlets ΔP1,ΔP2,cyclone inlet-gas outlet ΔP3,separation efficiency η and air leak rate δ were investigated. The results show that vcis the main factor affecting the pressure distribution of the separator. As vc increases from 14. 4 m/s to 25. 4 m/s,the cyclone inlet-gas outlet ΔP3 increases from 0. 70 k Pa to 2. 12 k Pa,η increase from85. 4% to 89. 5%,and δ increases gradually. As ω increases,ΔP1 and ΔP2 decrease significantly,ΔP1 and ΔP2 descent slope begin to slow when ω is 0. 08. When v is less than 14. 0 m/s,as v increases,δ decreases greatly. When v is too high,which seriously affects the flow of the system,δ becomes a negative value,and η drops to 85. 9%. This study is expected to provide some reference for the design of circulating fluidized bed staged gasification equipment.

关 键 词：双排料管 下排气式旋风分离器 压力损失 分离效率 漏气率 

分 类 号：TB47[一般工业技术—工业设计]