Hydrocatalytic process for normal paraffin wax and sulfur removal

Abstract

Abstract Hydrocarbon fractions, particularly petroleum fractions of 30650* C boiling range and containing 0.1 - 3.0 percent wt. sulphur 5-50 percent wt. n-paraffin wax, are reduced in sulphur and nparaffin wax content by hydrocatalytic treatment at 260*-482* C and 50-3,000 psig, first over a catalyst of a Group VI or VIII hydrogenating component on a mordenite of reduced alkali metal content to remove n-paraffin wax and then over a catalyst of a Group VI or VIII hydrogenating component and a refractary inorganic oxide to remove sulphur. Diesel fuels or fuel oils are separated from the desulfurized product. Preferred catalysts are Pt on decationized mordenite and CoMo on alumina used respectively in amounts of 10-90 and 90-10 percent vol., preferably 20-60 and 80-40 percent vol. The feedstock must contact the mordenite catalyst first since this is sensitive to H2S and if gas is recycled from the sulphur removal to the nparaffin wax removal stage this should be treated to remove H2S.

Inventors

• 👤 Bernard Whiting Burbidge
• 👤 Ian Montgomery Keen
• 👤 Christopher Ronald Pout

Bibliographic Details