Conversion of synthesis gas to hydrocarbon mixtures
AssigneeMobil Oil Corporation
InventorsWerner O. Haag, Tracy J. Huang
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Abstract
A mixture of carbon monoxide and hydrogen is contacted with a mixture comprising an element selected from the group consisting of ruthenium, rhodium and osmium carbon monoxide reduction catalyst and a crystalline alumino-silicate providing a pore dimension greater than about 5 Angstroms and a constraint index in the range of 1 to 12 to produce hydrocarbon mixtures useful in forming gasoline boiling range products, aromatic rich hydrocarbons, and chemical intermediates.
Claims5
In a process for producing a hydrocarbon product effluent by contacting a syngas mixture of hydrogen and carbon monoxide with a catalyst mixture comprising a CO reducing component in combination with a special crystalline zeolite providing a silica to alumina ratio of at least 12 and a constraint index within the range of 1 to 12, the improvement which comprises,
- converting syngas initially comprising hydrogen and CO in a ratio up to about 2 to 1 to primarily gasoline boiling range hydrocarbons with limited methane production by contacting a catalyst mixture comprising from about 0.2 up to about 5 weight percent of ruthenium in combination with said special crystalline zeolite, maintaining the temperature during contact within the range of about 470.degree. F. to about 650.degree. F. and a pressure within the range of 400 to 1500 psig, selecting a temperature in the range of about 530.degree. to about 650.degree. F. for aromatic gasoline production and in the range of about 470.degree. to about 530.degree. F. for predominantly olefinic gasoline production, separating light gases containing excess carbon monoxide from the reactor product effluent and providing a portion of the separated gases for admixture with fresh syngas feed as required and passed to the syngas conversion step.
Dependencies are inferred from the claim text.