DIESEL FUEL PRODUCTION PROCESS Russian patent published in 2007 - IPC C10G45/08 B01J23/882 B01J31/04 

FIELD: petroleum processing.

SUBSTANCE: object of invention is production of low-sulfur diesel fuels from high sulfur-level hydrocarbon feedstock. Proposed process consists in conversion of straight-run diesel fuel having high sulfur level in presence of preliminarily sulfidized heterogeneous catalyst containing group VIII metal and group VIB metal deposited on alumina characterized by pore volume 0.3-0.7 mL/g, specific surface area 200-350 m²/g, and average pore diameter 9-13 nm. Prior to be sulfidized, catalyst has following components: cobalt compounds in concentration 2.5-7.5% calculated as CoO; molybdenum compounds, 12-25% as MoO₃; citric acid derivatives, 15-35% as citric acid; boron compounds, 0.5-3% as B₂O₃; and alumina, the balance. Process is conducted at 320-370°C, pressure 0.5-10 MPa, feedstock weight rate 0.5-5 h^-1, and hydrogen-to-feedstock volume ratio 100-1000.

EFFECT: reduced sulfur level in diesel fuel to less than 50 ppm.

3 cl, 1 tbl, 8 ex