GAO Zhuwei^a,LING Haoran^a,ZOU Xin^a,CHEN Fengyu^a,CAO Xiaxin^a,WANG Zhuo^a,LIU Zhongxin^b,c

(a.School of Chemical Engineering and Technology,b.Key Laboratory of Tropical Island Resources Advanced Materials,Ministry of Education, c.Key Laboratory of Fine Chemicals of Hainan Province,Hainan University,Haikou 570228,China)

Abstract：The cyclone separator with downward exhaust gas is commonly used in circulating fluidized bed boilers to perform gas-solid separation and particle recovery.This study introduced the structure and working principle of the cyclone separator with downward exhaust gas.The problems existing in the operation of the circulating fluidized bed boiler,such as high carbon content of flue gas fly ash,unstable combustion,high requirements for flue gas dust removal,and poor adaptability to coal quality were summarized.The improvement measures of several structures such as the bottom cone slope,fluid guide and exhaust pipe of the separator and the gas-solid separation effect were introduced.It is proposed that the optimization and improvement of the lower exhaust cyclone separator should be carried out from the aspects of structural improvement and combination application,installation and use of internal components,development of new separators and improvement of equipment service life.

Keywords：cyclone separator with downward exhaust gas;circulating fluidized bed boiler;bottom inclined cone;guide body

Get Citation: GAO Z W,LING H R,ZOU X,et al.Research progress of cyclone separator with downward exhaust gas in circulating fluidized bed boiler[J].China Powder Science and Technology,2023,29(3)：35-46.

Received： 2022-09-27,Revised：2022-11-07,Online：2023-04-11 09：45。

Funding Project：国家自然科学基金项目,编号：12202127;海南省科协青年科技英才创新计划项目,编号：QCXM202027;海南省自然科学基金项目,编号：520QN228;海南大学科研启动基金项目,编号：KYQD(ZR)20042。

First Author：高助威(1994—),男,副教授,博士,博士研究生导师,研究方向为多相流动与分离。E-mail：gaozhuwei@hainanu.edu.cn。