Catalytic process for the production of hydrocarbons
AssigneeCanada Chemical Corporation
InventorConrad Ayasse
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Abstract
Single-stage catalytic conversion of a gas mixture, having a molar ratio of hydrogen to carbon monoxide greater than 1.9, to hydrocarbons boiling in the gasoline or diesel range, is achieved using three catalysts in admixture. The first is a Fischer-Tropsch catalyst with catalytic activity for the conversion of H.sub.2 and CO into hydrocarbons. The second is a methanol conversion catalyst with catalytic activity for the conversion of methanol into hydrocarbons, such as a crystalline aluminosilicate zeolite or crystalline silicate. Finally, the third is a methanol synthesis catalyst with catalytic activity for both the water-gas shift reaction and methanol synthesis. This combination of catalysts provides high carbon conversion of CO to hydrocarbons, and a high yield of liquid products.
Claims13
A catalytic process for the production of a hydrocarbon mixture having a higher percentage of paraffinic and olefinic hydrocarbons than aromatic hydrocarbons, comprising:
- providing a gas mixture of hydrogen and carbon monoxide having a molar ratio of hydrogen to carbon monoxide which is greater than about 1.9;
- reacting the gas mixture at elevated pressure and temperature in contact with a trifunctional catalyst mixture consisting essentially of a first Fischer-Tropsch catalyst having catalytic activity for converting hydrogen and carbon monoxide reactants into hydrocarbons, a second catalyst having catalytic activity for the conversion of methanol into hydrocarbons, and a third catalyst having catalytic activity for the water-gas shift reaction and the methanol synthesis reaction;
- to produce a hydrocarbon mixture boiling in the gasoline and diesel range, said trifunctional catalyst having a relative proportion of said first catalyst to said second and third catalysts effective to provide said hydrocarbon mixture having a higher percentage of paraffinic and olefinic hydrocarbons than aromatic hydrocarbons.
Dependencies are inferred from the claim text.