Process for conversion of light paraffins to alkylate in the pro

Details Process for conversion of light paraffins to alkylate in the pro Process for conversion of light paraffins to alkylate in the pro

1990-10-17

1992-04-21

Willis, Jr., Prince

Fuel and related compositions

Liquid fuels

Organic oxygen compound containing

568697, C10L 118

Patent

active

051063891

ABSTRACT:
A process is disclosed for the production of high octane alkyl tertiary alkyl ether rich gasoline and gasoline rich in alkylated aromatics. It is disclosed that unreacted C.sub.3 -C.sub.4 hydrocarbon fraction of etherification feedstock plus unreacted alkanol can be separated and employed as alkylating agents in combination with a feedstream containing light aromatics when the alkylation reaction is carried out under conditions of high severity in contact with a high activity shape selective metallosilicate catalyst such as ZSM-5. Under high severity conditions olefin-assisted paraffin conversion also occurs as well as cracking, redistribution and alkylation. Aromatic rich gasoline is a suitable feedstream to the high severity conversion zone to produce a gasoline rich in alkylated aromatics.

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