LIU Jie1,2a, 2b, 3, XU Xiang2a, 2b, 3, YANG Shaojun2a, 2b, 3, LI Xiquan2a, 2b, 3, XIAO Yunhan2a, 2b, 3
（1. University of Chinese Academy of Sciences, Beijing 100049, China; 2. a. Key Laboratory of Advanced Energy and Power; b. Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100190， China; 3. Research Center for Clean Energy and Power, Chinese Academy of Sciences, Lianyungang 222069, China）
Abstract: Gravity discharge characteristics of quartz sand with different particle sizes of seven kinds discharging from conical hoppers of different structures of nine kinds were investigated in discharge system of plexiglass conical hopper. The results show that the packing head has no influence on the discharge rate. The discharge rate increases obviously with the particle type changing from Geldart-A to Geldart-B. As the particle size increases continuously until the particle type belongs to Geldart -D, the discharge rate slowly decreases. When the particle size or outlet diameter is small （Geldart -A type particles, hopper outlet diameter of 20 mm）, there is small change on the discharge rate for different half cone angles. When the particle size and outlet diameter are large（Geldart-B and D type particles, hopper outlet diameter of 32 mm）, the discharge rate decreases with the increasing of the half cone angle. Beverloo model and Brown model both have good prediction accuracy.
Keywords: conical hopper; powder; gravity discharge; discharge rate
中图分类号：TB44 文献标志码：A
文章编号：1008-5548（2014）03-0001-06
DOI:10.13732/j.issn.1008-5548.2014.03.001
收稿日期：2013-09-27， 修回日期：2013-10-18，在线出版时间：2014-06-24。
基金项目：中国科学院战略性先导科技专项，编号：XDA07050500；中国科学院知识创新重要方向性项目，编号： KGCX2-YW-348；中国科 学院院地合作项目， 编号：DBNJ-2011-101； 江苏省产学研项目， 编号：BY2010128；连云港市产学研项目，编号：CXY1003。
第一作者简介：刘 杰（1985—），男，硕 士 研 究 生，研究方向为煤气化。E-mail: 02001105@163.com。
通信作者简介：肖云汉（1965—），男，博士，研究员，研究方向为能源科技政策及战略、整体煤气化联合循环发电系统(IGCC)、近零排放、分布式供能、废弃物热处理及综合利用。 E-mail: yhxiao@njbas.ac.cn。
