Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/65593
Title: Modelling of SOEC-FT reactor : pressure effects on methanation process
Authors: Chen, B
Xu, H
Ni, M
Keywords: Fischer-Tropsch process
Methane synthesis
Pressurized reactor
Solid oxide electrolysis cell
Solid oxide fuel cell
Issue Date: 2017
Publisher: Pergamon Press
Source: Applied energy, 2017, v. 185, p. 814-824 How to cite?
Journal: Applied energy 
Abstract: In this paper a numerical model is developed for a novel reactor combining a Solid Oxide Electrolyzer Cell (SOEC) section with a Fischer Tropsch like section for methane production under pressurized & temperature-gradient condition. Governing equations for mass, momentum, charge transport are solved with Finite Element Method. The chemical reaction kinetics of reversible water gas shift reaction and reversible methanation reaction in Ni/YSZ cathode are fully considered. The model is validated by comparing simulation results with experimental data. Parametric simulations are conducted to understand the physical-chemical processes in the reactor with a focus on the pressure effect. It is predicted that the optimal operating pressure is around 3 bar, beyond which the CH4 conversion ratio (2.5 times enhanced than 1 bar operating) cannot be further increased. It is also found that it is feasible to operate the pressurized SOEC at a lower temperature for CH4 production with improved catalyst activity.
URI: http://hdl.handle.net/10397/65593
ISSN: 0306-2619
EISSN: 1872-9118
DOI: 10.1016/j.apenergy.2016.10.095
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