Process for and apparatus for catalytic cracking in two successi

Details Process for and apparatus for catalytic cracking in two successi Process for and apparatus for catalytic cracking in two successi

1993-05-07

1996-03-12

Gibson, Sharon

Mineral oils: processes and products

Chemical conversion of hydrocarbons

Plural serial stages of chemical conversion

208 72, 208 73, 208 75, 208 76, 208 77, 208113, 208148, 208155, 208156, C06

Patent

active

054983266

ABSTRACT:
The invention relates to a process for catalytic cracking and the associated apparatus in which the cracking reaction takes place in two substantially vertical and successive reaction zones, the loads being introduced into the first zone where it circulates from the top downwards, then at least a part of the product obtained is introduced into a second reaction zone in which it circulates in an ascending fashion. A supplementary hydrocarbonated phase is advantageously introduced into the product entering the second zone. The invention applies particularly to heavy loads, with a U-shaped apparatus.

REFERENCES:
patent: 2307879 (1943-01-01), Cornell
patent: 3607730 (1971-09-01), Pfeiffer
patent: 3826738 (1974-07-01), Zenz
patent: 4385985 (1983-05-01), Gross et al.
patent: 4999100 (1991-03-01), Thacker et al.

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