Production of gasoline and distillate fuels from light cycle oil

Details Production of gasoline and distillate fuels from light cycle oil Production of gasoline and distillate fuels from light cycle oil

1989-12-13

1991-02-05

Myers, Helane E.

Mineral oils: processes and products

Chemical conversion of hydrocarbons

Plural serial stages of chemical conversion

208 67, 208 74, 208 69, 208 89, 208111, C10G 6512

Patent

active

049902393

ABSTRACT:
High octane gasoline and high quality distillate are co-produced by a hydrocracking light cycle oil from a catalytic cracking process under conditions of low to moderate hydrogen pressure and severity to produce a high octane, hydrocracked gasoline. The distillate fraction from the hydrocracker is separated to form a first fraction which boils immediately above the gasoline fraction and a second, higher boiling fraction which is withdrawn as product. The first distillate fraction is recycled, preferably to extinction, to the cracker to increase the paraffinic content of the higher boiling distillate product by removal of the hydroaromatic components in the recycled fraction. The recycled fraction may be mixed with fresh feed to the cracker or may be injected at a higher level in the cracking riser as a secondary feed injection. The paraffinic distillate product has a low sulfur content and a high cetane index and is useful as a road diesel fuel.

REFERENCES:
patent: 4207167 (1980-12-01), Bradshaw
patent: 4585545 (1986-04-01), Yancy et al.
patent: 4676887 (1987-06-01), Fischer et al.
patent: 4738766 (1988-04-01), Fischer et al.
patent: 4789457 (1988-12-01), Fischer et al.
patent: 4828675 (1984-05-01), Sawyer et al.
patent: 4828676 (1984-05-01), Sawyer et al.

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