标题：Oil shale upgrading by gas-solid high density separation fluidized bed under secondary accumulation distribution
作者：Zhang, Bo; Zhang, Zhenxing; Ma, Zhijun; Zhu, Guangqing; Zhao, Pengfei; Guo, Junwei; Zhu, Xiangnan; Yan, Guanghui
作者机构：[Zhang, Bo; Zhang, Zhenxing; Zhu, Guangqing; Zhao, Pengfei; Guo, Junwei; Yan, Guanghui] China Univ Min & Technol, Minist Educ, Key Lab Coal Proc & Eff 更多
通讯作者：Ma, Zhijun;Zhu, GQ;Yan, GH;Ma, ZJ
通讯作者地址：[Zhu, GQ; Yan, GH]China Univ Min & Technol, Minist Educ, Key Lab Coal Proc & Efficient Utilizat, Xuzhou 221116, Jiangsu, Peoples R China;[Ma, ZJ]Liaon 更多
关键词：Oil shale; Secondary distribution; Density stability; Separation; performance
摘要：In the separation of oil shale using gas-solid separation fluidized beds, the waste rocks fall on the distribution plate after separation and the scraper fails to discharge them in time, causing the airflow entering the bed to be redistributed. Due to its unique secondary layout effect on airflow, the existence of stacking beds is an important factor affecting the stability of the fluidized bed, and indirectly affects the separation performance of gas-solid fluidized beds. Therefore, it is necessary to carry out further research on the stacking bed to provide a strong basis for optimizing the practical operation and sorting performance of the gas-solid fluidized bed. Here, the effects of stacked beds on energy consumption, density uniformity, and bed stability were systematically analyzed experimentally. The results showed that the secondary accumulation bed has a synergistic effect on the fluidization stability of the bed and can improve the fluidization quality of the ordinary bed. Oil shale was sorted under optimized test operating conditions (accumulation height H-S = 35 mm, accumulation particle diameter D = 6 mm, fluidization number N = 1.3), and the refined mineral yield was 29.85%, oil yield was 9.42%, tail mineral yield was 70.15%, and oil yield was 1.54%. The possible deviation, E, was 0.085.