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Phase coexistence in fluidization
  • +2
  • Feng Lu,
  • Chenxi Zhang,
  • Yao Wang,
  • Weizhong Qian,
  • Fei Wei
Feng Lu
Tsinghua University
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Chenxi Zhang
Tsinghua University
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Yao Wang
Tsinghua University
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Weizhong Qian
Tsinghua University
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Fei Wei
Tsinghua University
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Abstract

The coexistence of granular liquid-like phase (cluster) and gas-like phase (void) in fluidization, a spontaneous symmetry-breaking dissipative state, contributes to excellent mixing behavior in multi-phase reactors. In present study, a universal granular state equation to describe phase coexistence far from critical point is developed, where both the inelastic solid-collision and asymmetrical instability is taken into consideration. Catastrophe theory is applied to find the stable boundary of phase coexistence, and verified by cold-flow experiment with different solid pressure. A phase diagram, based on both theoretical analysis and experimental study, is given as a useful guideline of design and operation of efficient multi-phase reactors.

Peer review status:UNDER REVIEW

13 Apr 2021Submitted to AIChE Journal
18 Apr 2021Assigned to Editor
18 Apr 2021Submission Checks Completed
18 May 2021Reviewer(s) Assigned