Down flow fluit catalytic cracking process and apparatus.

摘要

At least partially regenerated catalyst, which is to be recycled towards the reactor 1 is taken from a dense phase 17a contained in a regenerator 17 and the stage of introduction of the catalyst into the upper part 3 of the reactor 1 is carried out under such conditions that the density of the gas-solid suspension thus created is between 80 and 500 kg/m<3> before it comes into contact with the feedstock which is introduced by the injectors 5. Application to the catalytic cracking of heavy hydrocarbon feedstocks.