0
research-article

Transient Cold Flow Simulation of Fast Fluidized Bed Fuel Reactors for Chemical Looping Combustion

[+] Author and Article Information
Mengqiao Yang

Department of Mechanical Engineering and Materials Science Washington University in St. Louis 1 Brookings Drive, St. Louis, MO 63130
mengqiao@wustl.edu

Subhodeep Banerjee

Multiphase Flow Science Group National Energy Technology Laboratory 3610 Collins Ferry Rd, Morgantown, WV 26505
subhodeep.banerjee@netl.doe.gov

Ramesh K. Agarwal

Department of Mechanical Engineering and Materials Science Washington University in St. Louis 1 Brookings Drive, St. Louis, MO 63130
rka@wustl.edu

1Corresponding author.

ASME doi:10.1115/1.4039415 History: Received April 16, 2017; Revised January 31, 2018

Abstract

Circulating fluidized bed (CFB) in chemical looping combustion (CLC) is a recent technology that provides great advantage for gas-solid interaction and efficiency. In order to obtain a thorough understanding of this technology and to assess its effectiveness for industrial scale deployment, numerical simulations are conducted. Computational Fluid Dynamics (CFD) simulations are performed with Dense Discrete Phase model (DDPM) to simulate the gas-solid interactions. CFD commercial software ANSYS Fluent is used for the simulations. Two bed materials of different particle density and diameter, namely the molochite and Fe 100, are used in studying the hydrodynamics and particle behavior in a fuel reactor corresponding to the experimental set up of Haider et al. at Cranfield University in U.K. Both the simulations show satisfactory agreement with the experimental data for both the static pressure and volume fraction at various heights above the gas inlet in the reactor. It is found that an appropriate drag law should be used in the simulation depending on the particle size and flow conditions in order to obtain accurate results. The simulations demonstrate the ability of CFD/DDPM to accurately capture the physics of CFB based CLC process at pilot scale which can be extended to industrial scale projects.

Copyright (c) 2018 by ASME
Your Session has timed out. Please sign back in to continue.

References

Figures

Tables

Errata

Discussions

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In