METHOD OF CONVERTING PARAFFIN-CONTAINING HYDROCARBON CRUDE Russian patent published in 1999 - IPC

FIELD: petrochemical industry. SUBSTANCE: invention aims at reducing paraffin in paraffin-containing hydrocarbon crude to produce middle-run products including low freezing-point jetliner fuel and/or diesel fuel as well as densified oil with low flow and cloud points. Initial material is brought into contact with hydrocracking catalyst in hydrocracking zone in presence of hydrogen at elevated temperature and pressure, where catalyst contains filling agent, at least one hydrogenated metal component selected from the group including VIB and VIII group metals, and large-pore size zeolite (Y-type zeolite). Hydrocracking product stream enters hydrodewaxing zone, where, at elevated temperature and pressure and in presence of hydrogen, product is brought into contact with dewaxing catalyst containing crystalline molecular sieve with transitory-size pores selected from the group including borosilicates, ferrosilicates, aluminosilicates, and silicoaluminophosphates. EFFECT: improved working characteristics of products. 6 cl, 4 tbl, 2 ex