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US 7,597,796 B2Granted
Apparatus and process for catalytic cracking of two distinct hydrocarbon feeds
AssigneeInstitut Francais du Petrole
InventorsRégis Andreux, Jean-Luc Duplan
Life of this patent
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Abstract
The present invention concerns an apparatus and associated process for the catalytic cracking of oil cuts in a fluidized bed. The apparatus and process can catalytically crack a conventional feed in a principal riser B and crack a secondary feed in at least one secondary riser C. The lower end of the secondary riser or risers C is open to the bottom portion of the principal riser B; the upper end of the secondary riser or risers C is open to the top portion of the principal riser B.
Claims17
An apparatus for catalytically cracking a conventional feed and a secondary feed comprising
- a principal riser (B) defining a conventional reaction zone;
- a transfer line (A) for the principal riser (B) supplying fresh catalyst or catalyst from a regeneration unit;
- means (1) for injecting conventional feed into the principal riser (B);
- means for injecting atomization vapor into the principal riser (B);
- said apparatus further comprising:
- at least one secondary riser (C) parallel to the principal riser (B), the lower end of which is open to the bottom portion of the principal riser (B) and the upper end of which is open to the top portion of the principal riser (B), said secondary riser(s) being external to the principal riser (B) and defining a secondary reaction zone for cracking of a secondary feed;
- and
- means (3) for injecting a secondary feed into the secondary riser or risers (C);
- means for controlling the cracking conditions for the secondary feed.
6 more elements
Dependencies are inferred from the claim text.