| 摘要 |
<p>Providing gas with very high methane content, comprises separating at least one portion of carbon dioxide from a gas stream containing carbon dioxide and methane, at a first processing site, where a product gas that is produced by catalytic methanation of reactant gas containing carbon dioxide and hydrogen, forms at least one portion of the gas stream, at a second processing site before it reaches the first processing site. Independent claims are also included for: (1) a plant (10) for providing the gas with very high methane content, comprising a device for separating at least one portion of the carbon dioxide from a gas stream containing carbon dioxide and methane, which is supplied to the separating device, a device for producing the product gas (6) by catalytic methanation of reactant gas containing carbon dioxide and hydrogen, and a line system for at least partial formation of gas stream by the product gas of methanation device, arranged upstream of the separating device; (2) a methanization reactor (40) for using in the plant, preferably as a unit together with an electrolyzer for producing at least one portion of hydrogen that is converted in the methanization reactor; and (3) a gas mixture (3) having very high methane content, which is provided by the above method and/or by the above plant.</p> |
