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
040691365
ABSTRACT:
A multiple-stage catalytic conversion system in which a hydrocarbon charge stock is countercurrently reacted in a plurality of catalytic reaction zones, in all of which the catalyst particles are downwardly movable via gravity-flow. The charge stock, in the absence of added, or recycled hydrogen, is reacted serially in the reaction zones in the order of increasing catalyst loading, the product ultimately being recovered from the effluent emanating from that reaction zone (1) into which fresh, or regenerated catalyst particles are introduced and, (2) which contains the greatest quantity of catalyst particles. Catalyst particles are transferred from one reaction zone to another in the order of decreasing catalyst loading, ultimately being withdrawn from the system through the reaction zone containing the least amount of catalyst particles.
REFERENCES:
patent: 2285727 (1942-06-01), Komarewsky
patent: 2689821 (1954-09-01), Imhoff et al.
patent: 3483740 (1974-10-01), Mitchell et al.
patent: 3516924 (1970-06-01), Forbes
patent: 3706536 (1972-12-01), Greenwood et al.
patent: 3882015 (1975-05-01), Carson
Fisch Irvin S.
Peer Roger L.
Erickson Robert W.
Hoatson Jr. James R.
Levine Herbert
Page II William H.
UOP Inc.
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