METHOD OF PRODUCING WINTER DIESEL FUEL Russian patent published in 1998 - IPC

Abstract RU 2108370 C1

FIELD: petroleum processing. SUBSTANCE: crude oil is fractioned to yield kerosene fraction 120- (240-260) C and diesel fractions, 96% of which boil away within 140- (300-320) C and 210-(340-360) C. 10-30% of The latter fraction is subjected to redistillation to isolate fraction 200-(300-320) C which undergoes catalytic hydrogenation treatment and zeolite dewaxing. Winter diesel fuel is obtained by way of compounding dewaxed fraction (10-25 wt %) with mixture of diesel fractions 140-(300-320) C and 210- (340-360) C taken at weight ratio from 10-90 to 35:65 (50-75 wt %), original or subjected to hydrogenation treatment kerosene fraction 120-(240-260) C (5-20 wt %), and gasoline fraction boiling away below 200 C (the balance). Basic fuel is then supplemented by 0.01-0.5 wt % of antidepressant - ethylene-vinyl acetate copolymer (molar ratio 0.3- 15) with molecular weight 100 to 75000. EFFECT: extended source of raw materials for diesel fuel. 3 tbl

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RU 2 108 370 C1

Authors

Somov V.E.

Laptev N.V.

Zalishchevskij G.D.

Varshavskij O.M.

Mitusova T.N.

Perezhigina I.Ja.

Dates

1998-04-10Published

1996-12-19Filed