Daniel H König
German Aerospace Center, Germany
Posters-Accepted Abstracts: J Pet Environ Biotechnol
Liquid fuels will be the fuel of choice for aviation, shipping and heavy load transportation for the coming decades. Synthetic fuels produced by the power-to-liquid route together with CO2 from industrial processes or air are a promising alternative to biofuels and can contribute significantly to future sustainable transport. Different process routes using electrolysis-based hydrogen from renewable power sources combined with the Fischer-Tropsch (FT) process are analyzed by process simulation and cost estimation. One route is the combination of a proton exchange membrane electrolyzer with reverse water-gas shift reaction. This concept is advantageous for fluctuating power sources. In comparison, integration of solid oxide electrolyzer cells (SOEC) with FT synthesis offers higher process efficiency, because high pressure steam from FT reactor cooling can be used as input for the SOEC. The total system efficiency calculated for Power-to-Liquid is about 45% for the PEM-concept and can be more than 60% for the SOEC-concept.
Email: Daniel.Koenig@dlr.de