文献类型：期刊文献

英文题名：Study on the fluidization and discharge characteristics of cohesive coals from an aerated hopper

作者：Lu, Haifeng[1];Guo, Xiaolei[1];Gong, Xin[1];Cong, Xingliang[1];Dong, Weibin[1]

机构：[1]E China Univ Sci & Technol, Key Lab Coal Gasificat, Minist Educ, Inst Clean Coal Technol, Shanghai 200237, Peoples R China

年份：2011

卷号：207

期号：1-3

起止页码：199

外文期刊名：POWDER TECHNOLOGY

收录：;EI(收录号：20110413618704);WOS:【SCI-EXPANDED(收录号:WOS:000287467000026)】；

基金：This work was supported by the National key Program of Basic Research in China (2010CB227002-3), Hi-tech Research and Development Program of China (2007AA050301) and the National Natural Science Foundation of China (21006027).

语种：英文

外文关键词：Pulverized coal; Cohesive force; Aerated hopper; Fluidization; Discharge rate

摘要：The cohesive characteristics of pulverized coal were revealed firstly by investigating the flow properties and fluidization behaviours of coal B and coal Y. Different from the classic fluidization profiles, the cohesive coals displayed complex behaviours during the fluidization process. Saw toothed pressure curves were found in the process with increasing aeration velocity. The prevailing mechanisms for cohesive coal discharge were analyzed and verified through the experiments. Experimental results of hopper discharge showed that most models had relatively large deviations to predict the discharge rate. Based on Huang's model, an improved model for discharge rate prediction within +/- 20% deviation in the experimental range was presented. (C) 2010 Elsevier B.V. All rights reserved.