SHI Sai, LIU Huiyang, YU Jianfeng, HUANG Ran, QIAN Chenhao
(School of Mechanical Engineering; Jiangsu Key Laboratory of Advanced Food Manufacturing Equipment & Technology, Jiangnan University,Wuxi 214122, China)
Abstract: In order to improve the classification performance of traditional liquid-solid fluidized bed, a liquid-solid fluidized bed classification device with inclined plate was developed by using inclined plate settlement technology. The effects of fluidization velocity, mass concentration of material and feed velocity on the classification performance of liquid-solid fluidized bed were investigated by single factor experiment. The results show that with the increase of fluidization velocity, the fractional efficiency of each particle size in the overflow stage increases, while the comprehensive fractional efficiency firstly increases and then decreases. With the increase of the mass concentration of the material, the fractional efficiency of the overflow fine particles increases firstly and then decreases, while the comprehensive fractional efficiency increases first and then decreases. With the increase of feed velocity, the fractional efficiency of overflow fine particles increases firstly and then becomes stable, while the comprehensive fractional efficiency increases first and then decreases. When the inclination of inclined plate is 60 °, fluidization velocity is 0.07 m/s, mass concentration of material is 8 g/L and flow rate of feed is 0.023 m/s, the comprehensive classification efficiency can reach 63.16%.
Keywords: liquid-solid fluidized bed;inclined plate settlement technology; silica powder; classification performance;operating parameters
中图分类号：TQ 028.8
文献标志码：A
文章编号：1008-5548(2021)04-0113-07
DOI:10.13732/j.issn.1008-5548.2021.04.014
收稿日期： 2021-03-02， 修回日期：2021-05-08，在线出版时间：2021-06-02 16:53。
基金项目：国家自然科学基金项目，编号：51905215；江苏省食品先进制造装备技术重点实验室科研项目项目，编号：FMZ202016。
第一作者简介：石赛(1996—)，女，硕士研究生，研究方向为微纳颗粒分离技术。E-mail：shisai960926@126.com。
通信作者简介：俞建峰(1974—)，男，博士，教授，博士生导师，研究方向为食品加工装备。E-mail：robotmcu@126.com。
