METHOD OF PRODUCTION OF SUPER-LOW-SULFUR DIESEL FUEL Russian patent published in 2007 - IPC C10G65/04 

FIELD: production of super-low-sulfur diesel fuel; oil and gas producing industry.

SUBSTANCE: proposed method consists in stage-by-stage catalytic hydraulic cleaning of diesel fraction in presence of hydrogen-containing gas at elevated temperature and increased pressure. At the first stage of process, starting material - diesel fuel fraction at temperature of 180-260C is subjected to hydraulic cleaning. At hot separation of hydrogenation product obtained at the first stage, vapor phase and liquid phase - fractions boiling-off at temperature above 330C are obtained; liquid phase of hydrogenation product of the first stage is subjected to hydraulic cleaning at the second stage, thus obtaining the hydrogenation product of the second stage; then, both products are combined with vapor phase of the first stage hydrogenation product.

EFFECT: improved quality of product; low cost of process; increased life of catalyst.

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