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Inhibition of temperature runaway phenomenon in the Sabatier process using bed dilution structure: LBM-DEM simulation
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  • Yixiong LIN,
  • Chen Yang,
  • Cheolyong Choi,
  • Wei Zhang,
  • Kazui Fukumoto,
  • Hiroshi Machida,
  • Koyo Norinaga
Yixiong LIN
Nagoya University
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Chen Yang
Fuzhou University
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Cheolyong Choi
Nagoya University
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Wei Zhang
China University of Petroleum Beijing
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Kazui Fukumoto
Nagoya University
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Hiroshi Machida
Nagoya University
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Koyo Norinaga
Nagoya University
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Abstract

The Sabatier process is promising for carbon dioxide utilization and energy storage. However, the serious problem that limits more comprehensive industrial applications is catalyst deactivation due to the temperature runaway phenomenon. The inert particle dilution approach, including the mixing dilution method and layered dilution method is applied to solve this problem. Based on the lattice kinetic scheme-lattice Boltzmann method (LKS-LBM), the effects of three parameters in bed dilution structure reconstructed by the discrete element method (DEM) on temperature distribution and carbon conversion rate were discussed, so as to investigate the relationship between packing structure and temperature distribution. Furthermore, numerical results indicated that an optimal bed dilution structure, which not only can control the peak temperature below the critical temperature to avoid coking and sintering of catalyst, but also can improve the carbon conversion rate by almost 18% compared with the structure without dilution under the same circumstance.

Peer review status:ACCEPTED

18 Jan 2021Submitted to AIChE Journal
19 Jan 2021Submission Checks Completed
19 Jan 2021Assigned to Editor
21 Jan 2021Reviewer(s) Assigned
19 Feb 2021Editorial Decision: Revise Major
21 Mar 20211st Revision Received
23 Mar 2021Submission Checks Completed
23 Mar 2021Assigned to Editor
26 Mar 2021Reviewer(s) Assigned
03 May 2021Editorial Decision: Accept