Influence of bubbles on the segregated stability of fine coal in a vibrated dense medium gas-solid fluidized bed

作     者：Enhui Zhou Yadong Zhang Yuemin Zhao Qingqing Tian Zengqiang Chen Guannan lv Xuliang Yang Liang Dong Chenlong Duan Enhui Zhou;Yadong Zhang;Yuemin Zhao;Qingqing Tian;Zengqiang Chen;Guannan lv;Xuliang Yang;Liang Dong;Chenlong Duan

作者机构：Key Laboratory of Coal Processing&Efficient UtilizationMinistry of EducationChina University of Mining&TechnologyXuzhou 221116China School of Chemical Engineering&TechnologyChina University of Mining&TechnologyXuzhou 221116China 

出 版 物：《Particuology》 (颗粒学报（英文版）)

年 卷 期：2021年第19卷第5期

页      面：259-267页

核心收录：

学科分类：081704[工学-应用化学] 08[工学] 0817[工学-化学工程与技术] 081701[工学-化学工程] 

基　　金：Financial supports by the Found of the Jiangsu Excellent Youth Fund Project(Grant No.BK20200087) the National Natural Science Foundation of China(Grant Nos.51904298,U20A20304,51974306,51620105001)are gratefully acknowledged 

主　　题：Separation Bubble Fluidization Vibration fluidized bed Solids mixing entropy 

摘      要：In this paper,the variation of bubble size and number in the separation process of vibrated fluidized bed as well as the influence of bubble movement on the axial distribution of fine coal in different positions of the bed were *** result revealed that the size and number of bubbles is correlated with the fine coal separation effect in the separation *** the bed is in a uniform and stable fluidized state,the size of bubbles in the separation process was in the range of 1-2.5 cm and the number of bubbles was reduced by nearly 50%,which is helpful to promote the stratification and segregation of fine ***,after separation,the ash content of refined coal products of anthracite and 1/3 coking coal was reduced to 12.1% and 23.7% respectively,and the content of refined coal was up to 42.5% and 68.5% respectively,which show that the vibrated fluidized bed has a good separation performance,and can separate efficiently the coal of size−6+1 mm.