The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 06, 2016
Filed:
Oct. 09, 2013
Zentrum Fuer Sonnenenergie- Und Wasserstoff-forschung Baden-wuerttemberg, Stuttgart, DE;
Bernd Stuermer, Stuttgart, DE;
Michael Specht, Waldenbuch, DE;
Volkmar Frick, Stuttgart, DE;
Ulrich Zuberbuehler, Stuttgart, DE;
Sebastian Thaler, Ludwigsburg, DE;
Abstract
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.