Methylation process
AssigneeMobil Oil Corporation
InventorsPhilip J. Angevine, Stuart S. Shih
Life of this patent
Estimating the term…
Abstract
Methylation of coal-derived liquids and other polynuclear aromatic distillate feed stocks for improving distillate fuel quality is achieved by contacting the feed stock with hydrogen sulfide and carbon monoxide over conventional sulfur-resistant hydrotreating catalysts. The resultant product comprises methylated aromatic and hydroaromatic molecules of increased diesel quality. Further hydrogenating of the methylated hydrocarbons further increases the cetane number of the methylated product. A major product of the methylation reaction is elemental sulfur.
Claims11
A process for producing methylated aromatic or hydroaromatic compounds which comprises contacting an aromatic or hydroaromatic feed stock with hydrogen sulfide and carbon monoxide, said hydrogen sulfide and carbon monoxide being provided in sufficient amounts to react with the aromatic and hydroaromatic compounds in said feedstock to produce said methylated compounds and elemental sulfur.
Dependencies are inferred from the claim text.