Abstract： To reduce the sulfur dioxide produced in coal combustion process, the desulfurization agent powders grader simulation facility was developed according to the solid sulfur agent powders particle size and particle size distribution. Using Fluent software to analyze internal flow field of spiral classifier, and further optimizing the geometric parameters and operating parameters of the spiral classifier, the classification process was maken more stable. By making prototype simulation experiments, the accuracy of Fluent software analysis results were verified qualitatively. The results show that when the rotor blade number is 36 and the rotate speed is 500 r/min, the powder selecting chamber flow is stable. It can effectively sort out the limestone particles meeting the requirements.

Keywords: multi-stage classification; desulfurization agent; spiral classifier; circulating fluidized bed boiler

中图分类号：TB44         文献标志码：A

文章编号：1008-5548（2014）04-0013-04

DOI:10.13732/j.issn.1008-5548.2014.04.003

收稿日期：2013-10-31， 修回日期：2013-11-13，在线出版时间：2014-08-28。

第一作者简介：杨益（1989—），男，硕士研究生，研究方向为机械设计制作、粉体制备技术及设备。 电话：15008194969，E-mail：369453438@qq.com。