Production of high octane gasoline by hydrocracking catalytic cr

Details Production of high octane gasoline by hydrocracking catalytic cr Production of high octane gasoline by hydrocracking catalytic cr

1987-06-22

1988-12-06

McFarlane, Anthony

Mineral oils: processes and products

Chemical conversion of hydrocarbons

Plural serial stages of chemical conversion

208 69, 208 89, 208111, C10G 6910

Patent

active

047894571

ABSTRACT:
A moderate pressure hydrocracking process in which a highly aromatic, substantially dealkylated feedstock is processed directly to high octane gasoline by hydrocracking over a catalyst, preferably comprising a large pore size, crystalline alumino-silicate zeolite hydrocracking catalyst such as zeolite Y together with a hydrogenation-dehydrogenation component. The feedstock which is preferably a light cycle oil has an aromatic content of at least 50, usually at least 60 percent and an API gravity not more than 25. The hydrocracking typically operates at 600-1000 psig at moderate to high conversion leavels to maximize the production of monocyclic aromatics which provide the requisite octane value to the product gasoline. The unconverted products from the hydrocracker are recyclied to the catalytic cracking unit to obtain further improvements in gasoline yield and octane.

REFERENCES:
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patent: 4332670 (1982-06-01), Antal
patent: 4426276 (1984-01-01), Dean et al.
patent: 4585545 (1986-04-01), Yancey et al.
patent: 4676887 (1987-06-01), Fischer et al.

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