Fuel gas production
AssigneeDavy Powergas GmbH
InventorsNorman Harris, Thomas Frederick Shevels, Alan James Dennis
Life of this patent
Estimating the term…
Abstract
A process is described for the production of methane from methanol by catalytic dehydration and dehydrogenation providing a high initial methane yield and a final substitute natural gas product of high calorific value. The catalytic dehydration and dehydrogenation steps may be effected simultaneously or in sequence. High efficiency in usage of raw materials and thermal requirements of the process are secured. A preferred catalyst containing both dehydration and dehydrogenation functions consists essentially of a major amount of iron oxide and minor amounts of chromium oxide and phosphate or tungstate ions.
Claims14
A catalyst consisting essentially of a major amount of iron oxide, a minor, catalytically-effective amount of chromium oxide sufficient to impart stability to the catalyst, and phosphate or tungstate ions chemically-combined therewith, said phosphate or tungstate ions being present in a minor amount sufficient to impart a dehydration function to the catalyst, said amounts being based on the total weight of said components.
A catalyst consisting essentially of a major amount of iron oxide, a minor amount of chromium oxide sufficient to impart stability to the catalyst, and phosphate or tungstate ions chemically-combined therewith, said phosphate or tungstate ions being present in a minor amount sufficient to impart a dehydration function to the catalyst, said amounts being based on the total weight of said components, and said catalyst being essentially free from Group 8 metals.
Dependencies are inferred from the claim text.