Device and process for the catalytic cracking of two distinct hydrocarbon feeds

摘要

The installation comprises a main riser defining a conventional reaction zone, a transfer tube conveying fresh or regenerated catalyst, a device for the injection of a main charge and a device for the injection of an atomized vapor in the main riser. The installation further has a second riser parallel to the main riser giving a secondary reaction zone for a secondary charge; the lower and upper extremities are open, and a device for the injection of a secondary charge are provided with a device for control of the secondary charge. An independent claim is also included for catalytic cracking using the above modified reactor.