CATALYTIC CRACKING PROCESS Russian patent published in 2007 - IPC C10G11/05 

FIELD: petroleum processing.

SUBSTANCE: invention relates to catalytic cracking of heavy petroleum feedstock in presence of microspheric zeolite-containing catalyst to produce gasoline, liquefied hydrocarbon gases, and light gas oil. Catalytic cracking is accomplished by mixing (i) non-converted hydrocracking residue sulfur level no higher than 10 ppm formed at pressure above 12 MPa and conversion above 50% either with (ii) vacuum gas oil at weight ratio (60-75):(25-40) or (iii) vacuum gas oil and lube oil production extract at weight ratio (60-75):(24-35):(1-5), or (iv) vacuum gas oil, extract, and lube oil production filtrate obtained from deoiling stage at weight ratio (60-75):(19-34):(1-5):(1-5), respectively.

EFFECT: increased yield of target products.

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