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Optimisation of Reforming Catalyst Distribution in a Cross-flow Molten Carbonate Fuel Cell with Direct Internal Reforming

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Heidebrecht,  Peter
Process Systems Engineering, Max Planck Institute for Dynamics of Complex Technical Systems, Max Planck Society;

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Sundmacher,  Kai
Process Systems Engineering, Max Planck Institute for Dynamics of Complex Technical Systems, Max Planck Society;
Otto-von-Guericke-Universität Magdeburg, External Organizations;

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Citation

Heidebrecht, P., & Sundmacher, K. (2005). Optimisation of Reforming Catalyst Distribution in a Cross-flow Molten Carbonate Fuel Cell with Direct Internal Reforming. Industrial and Engineering Chemistry Research, 44(10), 3522-3528. doi:10.1021/ie048759x.


Cite as: https://hdl.handle.net/11858/00-001M-0000-0013-9D05-0
Abstract
Two optimization procedures of a molten carbonate fuel cell (MCFC) with direct internal reforming are presented. First, optimal operating conditions such as the amounts of feed gas,water, and air are calculated for a given cell current in order to obtain optimal electric efficiencies. An optimal current-voltage curve for the system is obtained by repeating this optimization for various cell currents. The second optimization balances the cooling effect of the endothermic reforming process and the heat-producing electrochemical reactions inside the cell in order to achieve a more homogeneous temperature profile. This is realized by optimization of the spatially distributed reforming catalyst density. A repeated calculation of the optimal current-voltage curve shows a significant increase of the electric efficiency by this measure. Both optimization procedures are based on a cross-flow MCFC model and consider several constraints concerning temperature, cell voltage, and carbonization.