文献类型：期刊文献

英文题名：Prediction of solid discharge rates of pulverized coal from an aerated hopper

作者：Lu, Haifeng[1];Guo, Xiaolei[1];Gong, Xin[1];Barletta, Diego[2];Poletto, Massimo[2]

机构：[1]E China Univ Sci & Technol, Shanghai Engn Res Ctr Coal Gasificat, Minist Educ, Key Lab Coal Gasificat & Energy Chem Engn, Shanghai 200237, Peoples R China;[2]Univ Salerno, Dipartimento Ingn Ind, I-84084 Fisciano, SA, Italy

年份：2015

卷号：286

起止页码：645

外文期刊名：POWDER TECHNOLOGY

收录：;EI(收录号：20153901306609);WOS:【SCI-EXPANDED(收录号:WOS:000364247200074)】；

基金：This work was supported by the National Natural Science Foundation of China (21206041).

语种：英文

外文关键词：Cohesive powders; Pulverized coal; Aeration; Hopper discharge; Solid discharge rate

摘要：A pilot-scale loop feeding system was used to investigate the discharge behavior of pulverized coal. Experiments on discharge of pulverized coal from an aerated hopper under several aeration rates were carried out. The flow properties of the pulverized coal were measured with different shear testing methods. A previously developed predictive model was adopted to estimate the discharge of pulverized coal. Powder flow properties extrapolated to zero consolidation were used for model application. A correlation between the voidage between aggregates and the gas superficial velocity was obtained from independent fluidization tests and applied into aerated discharge with proper modifications. Acceptable agreement was found between the predicted and the measured solid discharge rates. These results indicate the applicability of the model also to predict the powder flow from pilot scale units. (C) 2015 Elsevier B.V. All rights reserved.