Journal of Chemical Engineering & Process Technology
Open Access
ISSN: 2157-7048
+44-20-4587-4809
ISSN: 2157-7048
+44-20-4587-4809
Ramesh K Agarwal
Washington University in St. Louis, USA
Keynote: J Chem Eng Process Technol
Circulating fluidized bed (CFB) in chemical looping combustion (CLC) is a next generation combustion technology, which shows great promise over the spouted fluidized bed in promoting the gas-solid interaction and improving the combustion efficiency in a CLC fuel reactor. In order to demonstrate the effectiveness of this technology, numerical simulation of a laboratory scale CFB reactor for a coal-directed CLC is performed. A combined CFD for hydrodynamics and Dense Discrete Phase model (DDPM) for particle tracking approach is employed in the simulation. ANSYS FLUENT is employed for both CFD and DDPM. The initial simulation using molochite as bed material showed satisfactory agreement with the experimental results obtained at Cranfield University in the UK; which determined the relationship between the solid volume fraction and static pressure in the CFB reactor. The subsequent simulation using FE100 as bed material showed the effectiveness of CFD/DDPM for high density and small diameter bed material, further verifying the importance of static pressure in the circulating system. The simulations show the potential of CFB reactor in CLC and lay the foundation for future simulations of industrial-scale projects.
Ramesh K Agarwal is the William Palm Professor of Engineering at Washington University in St. Louis. His expertise is in Computational Fluid Dynamics and Heat Transfer and its applications to the problems in aerodynamics, energy and environment. He is the author and coauthor of over 500 publications and serves on the editorial board of 20+ journals. He has given many plenary, keynote and invited lectures at various national and international conferences worldwide. He is a Fellow of AAAS, ASME, AIAA, IEEE, SAE and SME.
E-mail: rka@wustl.edu