Low severity fluid coking

Details Low severity fluid coking Low severity fluid coking

1987-02-17

1989-03-28

Caldarola, Glenn

Mineral oils: processes and products

Chemical conversion of hydrocarbons

Cracking

208 50, C10G 932

Patent

active

048161365

ABSTRACT:
A fluid coking process is provided in which a fresh carbonaceous feed is coked in a transfer line first coking zone positioned in a fluidized bed second coking zone. A heavy oil coker product is recycled to the fluidized bed second coking zone maintained at a lower temperature than the first coking zone. This process permits low severity coking of the fresh carbonceous feed and higher severity coking of the recycle oil, thereby minimizing conversion to coke and gas and increasing yield of normally liquid products.

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patent: 2879221 (1954-07-01), Brown
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patent: 2901416 (1959-08-01), Tate
patent: 3671424 (1972-06-01), Saxton
patent: 3816084 (1974-06-01), Moser, Jr. et al.
patent: 4269696 (1981-05-01), Metrailer
patent: 4295956 (1981-11-01), Metrailer
patent: 4410420 (1983-10-01), Liss et al.

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