Methane synthesis
AssigneeDavy Powergas GmbH
InventorsNorman Harris, Ray Fowler
Life of this patent
Estimating the term…
Abstract
A process is provided for the catalytic production of methane from carbon oxides and hydrogen wherein water is introduced into the reaction vessel for the removal of the heat of reaction by the production of steam with the use of a catalyst effective at a temperature below 500.degree.F. The catalyst is a Group 8 metal, preferably mixtures of nickel and metals of the platinum group. Feedstock gas is normally obtained by gasification of fossil fuels or aliphatic alcohols with steam and/or oxygen.
Claims17
A process for the production of methane comprising reacting hydrogen and at least one carbon oxide selected from the group consisting of carbon monoxide and carbon dioxide, said hydrogen and carbon oxide comprising a gas, by passing said gas over a Group VIII metal-containing catalyst, which catalyst is effective for the reaction at a temperature below 500.degree.F., at a temperature sufficient to vaporize water and below 550.degree.F. and at a pressure of 0 to 2000 psig. in the presence of water in the liquid phase to form methane and to vaporize water to remove the heat of the reaction.
A process for producing a product gas containing increased methane by the reaction of hydrogen with carbon monoxide and/or carbon dioxide comprising feeding a gaseous feedstock produced by gasification of fossil fuels or aliphatic alcohols with steam and/or oxygen to a reaction chamber which contains a catalyst of a Group VIII metal and is effective for the reaction at a temperature below 500.degree.F., spraying water in the liquid phase over the catalyst so that the water evaporates and removes the heat of reaction within the chamber, the reaction in the chamber being carried out below a temperature of 550.degree.F. and at a pressure of 0 to 2000 psig, to form the product gas of increased methane content.
A process for the production of methane comprising reacting hydrogen with carbon monoxide or carbon dioxide in the presence of water in the liquid phase, removing the heat of reaction by evaporation of the water, said reaction being conducted with the use of a catalyst which is effective for the reaction at a temperature below 500.degree.F.
The process of claim 17 wherein the reaction temperature is below 550.degree.F.
Dependencies are inferred from the claim text.