Zentrum Fuer Sonnenenergie- Und Wasserstoff-forschung Baden-wuerttemberg

Eberhard-karls-universitat Tubingen

Zentrum Fur Sonnenenergie- Und Wasserstoff-forschung Baden-wurttemberg

Sebastian Thaler

Michael Specht

Volkmar Frick

Ulrich Zuberbuehler

Bernd Stuermer

Ulrich Zuberbühler

Frank Schüttauf

Bernd STÜRMER

The invention relates to a method and an apparatus for generating a methane-containing substitute natural gas from a carbon oxide-containing input gas and also to an energy supply system equipped with such an apparatus. According to the invention, the input gas is subjected to a methanation reaction where a superstoichiometric hydrogen fraction is established in the reactant gas. The product gas of the methanation reaction is divided by gas separation into a methane-containing retentate gas, which yields the substitute natural gas, and a hydrogen-containing permeate gas. At least some of the permeate gas is returned to the input gas and admixed therein to form the reactant gas for the methanation reaction. The invention may be used, for example, for renewable energy supply systems with biomass valorization.

Method and apparatus for generating a methane-containing substitute natural gas and related energy supply system

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Ludwigsburg, Germany

Sebastian Thaler