LIU Wenhuan, LIU Yu, WAN Yongfeng, LEI Fan, XU Pinjing

(College of Materials Science and Engineering, Xi’an University of Architecture and Technology, Xi’an 710055, China)

Abstract：The high separation efficiency of preheater cyclone is accompanied by large large pressure loss. With the implomentation of the national policy of energy saving, emission reduction and ultra-clean emission, how to ensure that the pressure loss of preheater cyclone is greatly reduced without reducing or slightl reducing its separation efficiency, so as to achieve the purpose of energy saving and consumption reduction, is the focus of current industry research. In order to achieve the performance index of low resistance loss and high separation efficiency of preheater cyclone, two pressure loss reduction devices were designed and developed. Without changing the structural parameters of the preheater cyclone, this paper studied the effects of different types of drag reduction devices on pressure loss and separation efficiency under different inlet air velocities and different solid-gas ratios, determined the applicable working conditions of drag reduction devices. The results show that for the preheater cyclone with the same structural parameters, the maximum reduction rate of pressure loss by inner cylinder reduction device is 21.34%, the average reduction rate is 13.91%, and the reduction rate of separation efficiency is about 5%, which is applicable to the working conditions at lower inlet air speed or lower solid to gas ratio at high air speed. The diversion reduction device has good reduction effect within the test range, the maximum reduction rate of pressure loss reaches 21.34%, the average reduction rate of pressure loss reaches 35.23%, but the reduction rate of separation efficiency is 7%, which is suitable for the working conditions where the requirement of separation efficiency is not too high, but the pressure loss needs to be reduced significantly.

Keywords：cyclone separator; drag reduction device; pressure loss; drag reduction rate; separation efficiency

Get Citation：LIU W H, LIU Y, WAN Y F, et al. Optimization of working performance of preheater cyclone by drag reduction device[J]. China Powder Science and Technology, 2023, 29(4): 71-79.

DOI：10.13732/j.issn.1008-5548.2023.04.007

Received：2022-10-15,Revised：2022-11-11,Online：2023-05-18 16:07。

Funding Project：国家重点研发计划项目,编号:2021YFB3802003、 2021YFB3802000。

First Author：刘文欢(1981—),男,副教授,博士,硕士生导师,研究方向为硅酸盐工程理论及设备。E-mail: liuwenzian@sina.com。

Corresponding Author：徐品晶(1981—),女,讲师,博士,研究方向为无机非金属材料。E-mail: xupinjing6100@xauat.edu.cn。