Effect of middling coal on separation efficiency in air dense gas–solid fluidized bed
Effect of middling coal on separation efficiency in air dense gas–solid fluidized bed
复制标题
中煤对空气浓气固流化床分离效率的影响
DOI：
10.1080/19392699.2018.1498847
复制
发表时间：
2018-07
影响因子：
2.1
通讯作者：
Chenlong Duan
中科院分区：
文献类型：
--
作者：
Xuchen Fan;Gansu Zhang;Yuemin Zhao;Chenyang Zhou;Liang Dong;Chenlong Duan
摘要 空气重介质流化床（ADMFB）干法选煤是一种有效的煤炭清洁方法。原料煤的特性会影响分选过程中的流化行为。在本研究中，中煤的影响……
ABSTRACT Dry coal separation using the air dense medium fluidized bed (ADMFB) is an effective method for the coal cleaning. The characteristic of feed coal would affect the fluidization behavior in the separation process. In this study, effect of middling coal 1 1 Middling coal: coal with density closing to separation density in the continuous production. on the pressure drop fluctuation, settling time of jetsam, and separation efficiency was investigated. Separation experiments with different amount of middling coal content were conducted. The results indicated that middling particles could increase the pressure drop fluctuation and decrease the separation efficiency. The middling particles could impede the falling of jetsam, increasing the jetsam settling time. With the increasing content of middling coal, probable error (E) had a slight tendency to increase from 0.057 to 0.072 g/cm3. The study provides theoretical support for decreasing the content of middling coal from the gas–solid fluidized bed separator in the continuous production to improve the coal separation efficiency.
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