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:
Apr. 05, 1977
Filed:
Jul. 22, 1975
Wolf-Dieter Muller, Frankfurt am Main, DT;
Friedrich-Wilhelm Moller, Friedrichsdorf, DT;
Heinz Jockel, Klein-Gerau, DT;
Metallgesellschaft Aktiengesellschaft, Frankfurt am Main, DT;
Abstract
A gas which can be substituted for natural gas is produced from a raw gas containing hydrogen and carbon oxides which is produced by the gasification of coal, tar or heavy residual oils under superatmospheric pressure. The raw gas is cooled, purified to remove catalyst poisons, particularly sulfur compounds, and then subjected to methanation and at least two stages in contact with nickel catalysts under pressures of 5-100 bars and at temperatures in the range of 200.degree.-500.degree. C. The product gas from the preceding methanation stage is reacted in the last methanation stage in contact with a catalyst which is indirectly cooled by a gas flowing in a countercurrent to the gas to be reacted.