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Numerical Simulation of Gas-Particle Two-Phase Flow in Corners Tangential Streams Gasifier

[+] Author Affiliations
Mo Yang, Dan Su, Zhangyang Kang

University of Shanghai for Science and Technology, Shanghai, China

Yuwen Zhang

University of Missouri, Columbia, MO

Paper No. IMECE2011-62998, pp. 783-788; 6 pages
doi:10.1115/IMECE2011-62998
From:
  • ASME 2011 International Mechanical Engineering Congress and Exposition
  • Volume 4: Energy Systems Analysis, Thermodynamics and Sustainability; Combustion Science and Engineering; Nanoengineering for Energy, Parts A and B
  • Denver, Colorado, USA, November 11–17, 2011
  • Conference Sponsors: ASME
  • ISBN: 978-0-7918-5490-7
  • Copyright © 2011 by ASME

abstract

Numerical simulation of anti-rich/lean burner jet flow is carried out to simulate two forms of gas-solid two-phase jet fields. One is a single burners and its exit of certain areas gas-solid two-phase jet field. Another one is gas-solid two-phase jet field in the single-layer combustion region. Predication of the particle dispersion in the burner jet is of great importance in industrial application and in the designing of coal burner with good performance. The objective of this study is to numerically investigate the particle dispersion mechanisms in the gas–solid two-phase jet from an anti-rich/lean burner. The detached-eddy-simulation (DES) approach is employed to study the turbulent flow in the fuel rich/lean separator and the gas–solid multiphase jet from the exit of an anti-rich/lean burner. The numerical results show that adding bias current of anti-rich/lean burner exit jet flow keeps anti-rich/lean of properties. Since the exit of boundary air speed is almost twice of primary air velocity, boundary air act on coal powder flow in acceleration and conveying, coal powder flow can keep boiler of inscribed circle position.

Copyright © 2011 by ASME

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