Erosion Behaviors of Gas–Solid Flow on an Assignment Plate using CFD–DEM

Document Type : Regular Article

Authors

1 1 Faculty of Mechanical Engineering & Automation, Zhejiang Sci-Tech University, Hangzhou, Zhejiang, 310018, China

2 School of Mechanical Engineering &Rail Transit, Changzhou University, Changzhou, Jiangsu, 213000, China

10.47176/jafm.15.05.33598

Abstract

The erosion wear of a gas–solid flow is a major challenge for an S Zorb reactor; it affects the production safety and stability. This study aims to investigate the erosion wear problem of a gas–solid flow on an assignment plate in an S Zorb reactor using CFD–DEM. The erosion wear behavior of the assignment plate is studied through flow field and particle trajectory analyses. Moreover, five polyhedral particle models were established by DEM to study the effect of particle shape on erosion behavior. The numerical calculation results show that the special structure of the bubble cap affords a special serrated erosion wear area. According to the movement process of particles, the erosion wear of the assignment plate is divided into two stages: first a large range of slight erosion wear occurs and then seriously concentrated erosion wear occurs. With the decrease of particle sphericity φ, the erosion wear rate first decreases rapidly and then increases slowly. φ=0.85 is the critical value of change, and the assignment plate has the lowest erosion wear rate. The simulation studies are helpful for reducing the erosion wear of the assignment plate and improving its service life.

Keywords


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Volume 15, Issue 5
September and October 2022
Pages 1609-1620
  • Received: 27 November 2021
  • Revised: 03 May 2022
  • Accepted: 16 May 2022
  • First Publish Date: 06 July 2022