Mineral oils: processes and products – Chemical conversion of hydrocarbons – Plural serial stages of chemical conversion
Patent
1976-10-26
1978-01-17
Levine, Herbert
Mineral oils: processes and products
Chemical conversion of hydrocarbons
Plural serial stages of chemical conversion
208165, 208169, C10G 3512, C10G 3900
Patent
active
040691373
ABSTRACT:
A multiple-stage catalytic conversion system in which a hydrocarbonaceous charge stock is reacted in a plurality of stacked catalytic reaction zones through which catalyst particles flow downwardly via gravity-flow. The charge stock, in the absence of added, or recycle hydrogen, is reacted first in the lowermost reaction zone, from which deactivated catalyst particles are withdrawn from the system. Resulting reaction zone effluent is further reacted in the uppermost reaction zone, through which fresh, or regenerated catalyst particles are introduced into the system, and serially in one or more subsequent, lower reaction zones. Product effluent from the reaction zone immediately above the lowermost zone is separated to recover the desired normally liquid product.
REFERENCES:
patent: 2285727 (1942-06-01), Komarewsky
patent: 2335610 (1943-11-01), Plummer
patent: 2689821 (1954-09-01), Imhoff et al.
patent: 3516924 (1970-06-01), Forbes
patent: 3706536 (1972-12-01), Greenwood et al.
patent: 3843740 (1974-10-01), Mitchell et al.
Erickson Robert W.
Hoatson Jr. James R.
Levine Herbert
Page II William H.
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