Mineral oils: processes and products – Chemical conversion of hydrocarbons – Plural serial stages of chemical conversion
Patent
1976-01-26
1978-02-14
Gantz, Delbert E.
Mineral oils: processes and products
Chemical conversion of hydrocarbons
Plural serial stages of chemical conversion
208120, 208164, C10G 1104, B01J 824, B01J 2912
Patent
active
040737179
ABSTRACT:
A process for producing gasoline which comprises cracking of a heavy petroleum feedstock in the presence of an alumino-silicate zeolite-containing catalyst maintained in a condition of an ascending flow at a temperature ranging from 480.degree. to 520.degree. C. and a mass velocity of said feedstock of from 6 to 40 hr.sup.-1 in the direction of said ascending flow with the formation of a reaction mixture containing gasoline, a fraction with a specific gravity of from 0.75 to 0.85 and a fraction with a specific gravity of from 0.85 to 0.95; the resulting reaction mixture is isolated from the catalyst and subjected to separation; said separated fractions are employed as recycle. The fraction with a specific gravity of from 0.75 to 0.85 is subjected to cracking in the presence of said catalyst which is in a condition of an ascending flow at a temperature of from 460.degree. to 520.degree. C. and a mass velocity of said fraction of from 6 to 40 hr.sup.-1 in the direction of said ascending flow. As a result of said cracking a reaction mixture is formed containing gasoline. The reaction mixture is separated from the catalyst and gasoline is recovered therefrom; the fraction with a specific gravity of from 0.85 to 0.95 is subjected to cracking in the presence of said catalyst which is in a condition of an ascending flow at a temperature of from 460.degree. to 520.degree. C. and at a mass velocity of this fraction selected within the range of from 5 to 8 hr.sup.-1 with the formation of a reaction mixture containing gasoline and a fraction with a specific gravity of 0.85 to 0.95; said latter reaction mixture is combined with the reaction mixture obtained from said cracking of a heavy petroleum feedstock and delivered, after separation from the catalyst, to the recovery of gasoline.
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Aliev Vagab S.
Ismailov, administrator by Amina Kyazim K.
Ismailova, administrator by Ali Rustam ogly
Ismailova, administrator by Dzhulietta Rustamovna
Ismailova, deceased Rustam Gadzhi A.
Gantz Delbert E.
Schmitkons G. E.
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