Modeling pressurized entrained flow gasification of solid fuels plays an important role in the development of integrated gasification combined cycle (IGCC) power plants and other gasification applications. A better understanding of the underlying reaction kinetics is essential for the design and optimization of entrained flow gasifiers—in particular at operating conditions relevant to large-scale industrial gasifiers. The presented computational fluid dynamics (CFD) simulations aim to predict conversion rates as well as product gas compositions in entrained flow gasifiers. The simulations are based on the software ansys fluent 15.0 and include several detailed submodels in user defined functions (UDF). In a previous publication, the developed CFD model has been validated for a Rhenish lignite against experimental data, obtained from a pilot-scale entrained flow gasifier operated at the Technische Universität München. In the presented work, the validated CFD model is applied to a Siemens test gasifier geometry. Simulation results and characteristic parameters, with focus on char gasification reactions, are analyzed in detail and provide new insights into the gasification process.
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July 2016
Research-Article
Reaction Kinetics of Pressurized Entrained Flow Coal Gasification: Computational Fluid Dynamics Simulation of a 5 MW Siemens Test Gasifier
Stefan Halama,
Stefan Halama
Lehrstuhl für Energiesysteme,
Technische Universität München,
Boltzmannstr. 15,
Garching 85748, Germany
e-mail: stefan.halama@tum.de
Technische Universität München,
Boltzmannstr. 15,
Garching 85748, Germany
e-mail: stefan.halama@tum.de
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Hartmut Spliethoff
Hartmut Spliethoff
Lehrstuhl für Energiesysteme,
Technische Universität München,
Boltzmannstr. 15,
Garching 85748, Germany;
Technische Universität München,
Boltzmannstr. 15,
Garching 85748, Germany;
ZAE Bayern (Bavarian Center for
Applied Energy Research),
Walther-Meissner-Str. 6,
Garching 85748, Germany
e-mail: spliethoff@tum.de
Applied Energy Research),
Walther-Meissner-Str. 6,
Garching 85748, Germany
e-mail: spliethoff@tum.de
Search for other works by this author on:
Stefan Halama
Lehrstuhl für Energiesysteme,
Technische Universität München,
Boltzmannstr. 15,
Garching 85748, Germany
e-mail: stefan.halama@tum.de
Technische Universität München,
Boltzmannstr. 15,
Garching 85748, Germany
e-mail: stefan.halama@tum.de
Hartmut Spliethoff
Lehrstuhl für Energiesysteme,
Technische Universität München,
Boltzmannstr. 15,
Garching 85748, Germany;
Technische Universität München,
Boltzmannstr. 15,
Garching 85748, Germany;
ZAE Bayern (Bavarian Center for
Applied Energy Research),
Walther-Meissner-Str. 6,
Garching 85748, Germany
e-mail: spliethoff@tum.de
Applied Energy Research),
Walther-Meissner-Str. 6,
Garching 85748, Germany
e-mail: spliethoff@tum.de
1Corresponding author.
Contributed by the Advanced Energy Systems Division of ASME for publication in the JOURNAL OF ENERGY RESOURCES TECHNOLOGY. Manuscript received August 14, 2015; final manuscript received January 12, 2016; published online February 22, 2016. Assoc. Editor: Yiannis Levendis.
J. Energy Resour. Technol. Jul 2016, 138(4): 042204 (8 pages)
Published Online: February 22, 2016
Article history
Received:
August 14, 2015
Revised:
January 12, 2016
Citation
Halama, S., and Spliethoff, H. (February 22, 2016). "Reaction Kinetics of Pressurized Entrained Flow Coal Gasification: Computational Fluid Dynamics Simulation of a 5 MW Siemens Test Gasifier." ASME. J. Energy Resour. Technol. July 2016; 138(4): 042204. https://doi.org/10.1115/1.4032620
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