SUN Simin1,2， GUO Shuai1， WANG Xiaofang1,2， ZHU Zhiping1,2
(1. Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100190, China;2. School of Engineering Science, University of Chinese Academy of Sciences, Beijing 100049, China)
Abstract: 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 vc is 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 kPa to 2.12 kPa, η increases from 85.4% 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.
Keywords: two-particle outlets; separator with downward gas-exit; pressure loss; separation efficiency; air leak rate
中图分类号：TB47
文献标志码：A
文章编号：1008-5548(2021)02-0054-09
DOI:10.13732/j.issn.1008-5548.2021.02.008
收稿日期： 2020-09-04， 修回日期：2020-09-27，在线出版时间：2020-12-22 16:22。
基金项目：中国科学院科技成果转移转化重点专项，编号：Y929030401。
第一作者简介：孙思敏(1997—)，女，硕士研究生，研究方向为循环流化床煤气化。E-mail: sunsimin@iet.cn。
通信作者简介：郭帅(1989—)，男，博士，助理研究员，研究方向为煤气化。E-mail: guoshuai@iet.cn。
