Thermo-economic optimisation of the integration of electrolysis in synthetic natural gas production from wood

Converting wood to grid quality methane allows to distribute a CO 2 free, renewable energy resource in a conventional energy distribution system and use it in transportation applications. Applying a multi-objective optimisation algorithm to a previously developed thermo-economic process model for th...

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Bibliographic Details
Published in:Energy (Oxford) 2008-02, Vol.33 (2), p.189-198
Main Authors: Gassner, M., Maréchal, F.
Format: Article
Language:English
Subjects:
Alternative fuels. Production and utilization
Applied sciences
Bioenergy
Biofuels
Economic data
Electrolysis
Energy
Energy economics
Exact sciences and technology
Fossil fuels and derived products
Fuels
Gas
Gasification
General, economic and professional studies
Methanation
Natural energy
Optimisation
SNG
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Summary:Converting wood to grid quality methane allows to distribute a CO 2 free, renewable energy resource in a conventional energy distribution system and use it in transportation applications. Applying a multi-objective optimisation algorithm to a previously developed thermo-economic process model for the thermochemical production of synthetic natural gas from wood, the present paper assesses the prospect of integrating an electrolyser in conversion systems based on directly and indirectly heated gasification. Due to an inherent lack of hydrogen for complete conversion of wood into methane and the possibility for rational use of oxygen, it is shown that electrolysis is an efficient and economically interesting option for increasing the gas output of the process while storing electricity and producing fuel that mitigates CO 2 emissions.
ISSN:0360-5442
DOI:10.1016/j.energy.2007.09.010