DONG Fang， MA Zhian， PENG Li， SHI Zhansheng， LIU Guanqing， LI Zonghui

(Research and Application Center of Multiphase Flow Separation Technology,Huadian Electric Power Research Institute Co., Ltd., Hangzhou 310030，China)

Abstract: To solve the problems of high resistance, insufficient of pulverized coal output, high unit consumption of pulverizing, low efficiency of separator, poor regulating performance of baffle, unqualified fineness of pulverized coal and serious abrasion in direct blowing pulverizing system, the gas-solid separation technology was adopted to in depth investigate the key effects affecting the performance of the separator based on the advanced vortex theory. The cyclone-inertia coupling coarse powder separator was successfully designed and applied by using the cyclone separation as the main method and the inertia separation as the auxiliary method. In addition, the pulverized coal conveying pipelines at the outlet of the separator were optimized. The results show that the separation efficiency of separator is increased by 13.3%, the milling capacity is increased by 20%, the power consumption of pulverizing is decreased by 4.73 kW·h/t.

Keywords: pulverizing system; coarse particle separator; pulverized coal pipeline; vortex theory; cyclone-inertia coupling; performance optimization

中图分类号：TK313

文献标志码：A

文章编号：1008-5548(2021)02-0082-05

DOI:10.13732/j.issn.1008-5548.2021.02.011

收稿日期： 2020-09-08， 修回日期：2020-09-17，在线出版时间：2020-12-22 16:23。

基金项目：中国华电集团科技项目，编号 ：CHDKJ-16-01-10。

第一作者简介：董方(1987—)，女，硕士，研究方向为多相流分离技术研究及应用。E-mail：fang-dong@chder.com。