Particle Technology and Fluidization

A CFD study of gas–solid jet in a CFB riser flow†

  1. Tingwen Li1,2,*,
  2. Chris Guenther1

Article first published online: 16 MAY 2011

DOI: 10.1002/aic.12619

Issue

AIChE Journal

AIChE Journal

Volume 58, Issue 3, pages 756–769, March 2012

Additional Information

How to Cite

Li, T. and Guenther, C. (2012), A CFD study of gas–solid jet in a CFB riser flow. AIChE J., 58: 756–769. doi: 10.1002/aic.12619

Author Information

  1. 1

    National Energy Technology Laboratory, U.S. Department of Energy, WV 26507

  2. 2

    URS Corporation, Morgantown, WV 26505

*National Energy Technology Laboratory, U.S. Department of Energy, WV 26507

  1. †

    This article is a U.S. Government work, and, as such, is in the public domain in the United States of America.

Publication History

  1. Issue published online: 6 FEB 2012
  2. Article first published online: 16 MAY 2011
  3. Accepted manuscript online: 21 MAR 2011 10:38AM EST
  4. Manuscript Revised: 1 MAR 2011
  5. Manuscript Received: 9 DEC 2010

Funded by

  • National Energy Technology Laboratory's. Grant Number: DE-FE0004000
  • National Energy Technology Laboratory Research Participation Program
  • U.S. Department of Energy
  • Oak Ridge Institute for Science and Education

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Keywords:

  • computational fluid dynamics;
  • circulating fluidized bed;
  • gas–solid jet;
  • flow hydrodynamics;
  • mixing

Abstract

Three-dimensional high-resolution numerical simulations of a gas–solid jet in a high-density riser flow were conducted. The impact of gas–solid injection on the riser flow hydrodynamics was investigated with respect to voidage, tracer mass fractions, and solids velocity distribution. The behaviors of a gas–solid jet in the riser crossflow were studied through the unsteady numerical simulations. Substantial separation of the jetting gas and solids in the riser crossflow was observed. Mixing of the injected gas and solids with the riser flow was investigated and backmixing of gas and solids was evaluated. In the current numerical study, both the overall hydrodynamics of riser flow and the characteristics of gas–solid jet were reasonably predicted compared with the experimental measurements made at NETL. Published 2011 American Institute of Chemical Engineers AIChE J, 2012

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