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International Journal of Energy for a Clean Environment

ISSN Print: 2150-3621
ISSN Online: 2150-363X

International Journal of Energy for a Clean Environment

Formerly Known as Clean Air: International Journal on Energy for a Clean Environment

DOI: 10.1615/InterJEnerCleanEnv.2017019433
pages 1-37

REVIEW OF RECENT ADVANCES IN PROCESS MODELING AND COMPUTATIONAL FLUID DYNAMICS SIMULATION OF CHEMICAL-LOOPING COMBUSTION

Subhodeep Banerjee
Department of Mechanical Engineering and Materials Science, Washington University in St. Louis, 1 Brookings Drive, St. Louis, MO 63130; Multiphase Flow Science Group, National Energy Technology Laboratory, Morgantown, WV
Ramesh K. Agarwal
Department of Mechanical Engineering and Materials Science, Washington University in St. Louis, 1 Brookings Drive, St. Louis, MO 63130

ABSTRACT

The paper presents a review of recent advances in system-level simulations and computational fluid dynamics (CFD) simulations of the Chemical-Looping Combustion (CLC) process. Process-level simulations are presented for CLC using Aspen Plus and the inflow rates are optimized to maximize energy output. The multi-stage fuel reaction concept is demonstrated to address the slow char gasification when solid coal is used as fuel. The development of the multiphase modeling process for CFD simulations of a CLC reactor is reviewed, and the utility of the various drag models that account for the solid-gas interaction is discussed. The review is concluded with a complete multiphase CFD simulation of reacting flow in a CLC reactor that ties together the various developments in this field in the current literature. The work presented in this paper provides valuable insights into the various process and design optimizations critical to the efficient operation and performance of the CLC process.