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Prediction of minimum fluidization velocity in pulsed gas-solid fluidized bed
  • +5
  • Yanjiao Li,
  • Chenyang Zhou,
  • Guannan Lv,
  • Yongxin Ren,
  • Yuemin Zhao,
  • Qingxia Liu,
  • Zhonghao Rao,
  • Liang Dong
Yanjiao Li
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Chenyang Zhou
China University of Mining and Technology
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Guannan Lv
China University of Mining and Technology
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Yongxin Ren
China University of Mining and Technology
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Yuemin Zhao
China University of Mining and Technology
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Qingxia Liu
University of Alberta
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Zhonghao Rao
China University of Mining and Technology
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Liang Dong
China University of Mining and Technology
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Peer review status:UNDER REVIEW

04 May 2020Submitted to AIChE Journal
06 May 2020Assigned to Editor
06 May 2020Submission Checks Completed
12 Jun 2020Reviewer(s) Assigned

Abstract

Abstract: Fluidized bed technology plays a vital role in petrochemistry and coal separation. To enhance fluidization stability, the flow is periodically introduced into the gas-solid fluidized bed to form a pulsed gas-solid fluidized bed. As the main fluidization parameter, the minimum fluidization velocity (umf) can reflect the change of the critical state of particles in the pulsed gas-solid fluidized bed, directly affecting the study of two-phase distribution in the bed. Due to lack of theoretical study on umf in pulsed gas-solid fluidized bed, the work proposed a novel method to predict umf comibined with soft sphere model. Meanwhile, the spring-damping and the resonance force models were established under the action of pulsating airflow. A theoretical model of umf was then derived for pulsed gas-solid fluidized bed based on experimental stress analysis of particles. The novel correlation is basically agreement with almost available data in the literatures and present work.