Etherification of C.sub.5 -plus olefins by sequential catalytic

Details Etherification of C.sub.5 -plus olefins by sequential catalytic Etherification of C.sub.5 -plus olefins by sequential catalytic

1992-10-01

1993-09-07

Lone, Werren B.

Organic compounds -- part of the class 532-570 series

Organic compounds

Oxygen containing

568698, C07C 4101, C07C 4300

Patent

active

052431029

ABSTRACT:
Ethers suitable for use as high octane oxygenate additives for motor fuels are produced by a multistage catalytic distillation process wherein a multi-carbon number range olefin feed stream, e.g. C.sub.5 -C.sub.7 isoolefins, is charged to two catalytic distillation zones operated in series. The heavier paraffins and olefins in the olefin feed stream and a first product ether are concentrated into the bottoms stream of the first catalytic distillation zone. This bottoms stream and additional alcohol is passed into the second catalytic distillation zone in which the heavier isoolefin is consumed in the production of a second ether. Preferably a portion of the catalytic distillation zone overhead liquid is passed into an external close coupled adiabatic reactor.

REFERENCES:
patent: 3506408 (1970-04-01), Kageyama et al.
patent: 3634535 (1972-01-01), Haunschild
patent: 4950803 (1990-08-01), Smith, Jr. et al.

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