Multiple stage hydrocarbon conversion with gravity flowing catal

Details Multiple stage hydrocarbon conversion with gravity flowing catal Multiple stage hydrocarbon conversion with gravity flowing catal

1981-01-05

1982-04-20

Davis, Curtis R.

Mineral oils: processes and products

Chemical conversion of hydrocarbons

Plural serial stages of chemical conversion

208 79, 208 80, 208156, 208169, 585441, 585449, C10G 3504

Patent

active

043258069

ABSTRACT:
A multiple stage catalytic conversion system in which a hydrocarbonaceous charge stock and hydrogen flow serially through a plurality of catalytic reaction zones, in each of which the catalyst particles are downwardly movable via gravity flow. At least three reaction zones are utilized, with the effluent stream from the first reaction zone being split between the second and third reaction zones. The technique decreases mass flow to the second reaction zone, thus serving to alleviate a catalyst pinning problem therein, a situation which occurs when catalyst pinning in the first reaction zone has been alleviated by structural modification methods not available to the second reaction zone.

REFERENCES:
patent: 3706536 (1972-12-01), Greenwood et al.
patent: 3839197 (1974-10-01), Greenwood et al.
patent: 4104149 (1978-08-01), Veinerman et al.
patent: 4119526 (1978-10-01), Peters et al.

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