Procedure and device in two successive catalytic cracking reactional zones.

摘要

The invention relates to a process of catalytic cracking, and the device ASSOCIATE IN WHICH THE CRACKING REACTION IN TWO AREAS IS DEVELOPED reaccional SUCCESSIVE substantially vertical. LOAD (25) is introduced into the first area (27) WHERE SHE CIRCULA up and down, then at least a portion of the product is introduced into a second zone reaction (28) where she circulates upwardly. A PHASE SUPPLEMENTARY hydrocarbon (33) is advantageously introduced into the product entering the second zone. The invention applies particularly heavy loads, with a device in U.