Apparatus for the catalytic cracking of hydrocarbons

摘要

An apparatus for the catalytic cracking of hydrocarbons having two independent transfer line reactors, each of which is associated with an independent cyclone separation system and wherein the cyclone separation systems are located within a common separator vessel. More particularly, the improved apparatus can be used for the simultaneous fluidized catalytic cracking of a hydrocarbon feedstock and the recracking of a selected fraction of the products from said cracking without commingling the feedstock and the selected fraction to be recracked.