Computational Fluid Dynamics Simulation of Bio-Syngas Hetero-/Homogeneous Combustion over Platinum in Catalytic Micro-Combustors
Junjie Chen, Wenya Song
Corresponding Author : Junjie Chen,
School of Mechanical and Power Engineering, Henan Polytechnic University, Jiaozuo, China.
Email ID : email@example.com
Received : 2015-11-12 Accepted : 2015-12-15 Published : 2015-12-15
Abstract : Bio-syngas is a synthetic gas obtained from the thermal gasification of biomass. It contains carbon monoxide and hydrogen which is thought to be a cleaner fuel than biogas owing to its higher hydrogen content. In this work, the bio-syngas hetero-/homogeneous combustion over platinum in catalytic micro-combustors were studied through two-dimensional computational fluid dynamics model. Numerical simulations were carried out with a two-dimensional elliptic computational fluid dynamics code in conjunction with full-elliptic flow description, detailed hetero-/homogeneous chemistry, and all relevant heat transfer mechanisms in catalytic micro-combustors. In addition, we also studied the light-off of mixtures of carbon monoxide and hydrogen under lean conditions. The self-inhibition of carbon monoxide was found. Increasing carbon monoxide compositions result in an increase in the light-off temperature. Addition of hydrogen to the feed causes a reduction in light-off temperature for all compositions of carbon monoxide studied. The most significant shift in light-off temperature occurs with the addition of small amounts of hydrogen with only minor marginal enhancement occurring at higher hydrogen concentrations. Hydrogen alone in a lean atmosphere will oxidize at room temperature. Upon changing the activation energy between adsorbed hydrogen and oxygen, the carbon monoxide was observed to oxidize first, however, no enhancement of light-off was predicted.
Keywords : Bio-syngas; Homogeneous combustion; Heterogeneous combustion; Micro-combustion; Light-off; Platinum catalyst; Computational fluid dynamics
Citation : Junjie Chen et al. (2015). Computational Fluid Dynamics Simulation of Bio-Syngas Hetero-/Homogeneous Combustion over Platinum in Catalytic Micro-Combustors. J. of Bioprocessing and Chemical Engineering. V3I4. DOI : 10.5281/zenodo.897947
Copyright : © 2015 Junjie Chen. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Journal of Bioprocessing and Chemical Engineering
ISSN : 2348-3768
Volume 3 / Issue 4
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