Patent ID: 8088335
Filing Date: 2012-01-03
Classification: B01J,C10G,Y02P

Abstract:
1. A catalytic conversion apparatus, characterized in that said apparatus comprises at least one feed oil cracking riser reactor, a dense bed reactor, a disengager having a gas-solid separating apparatus therein, and a stripper, wherein said stripper is located below said dense bed reactor and communicates with the bottom of the dense bed reactor through a fluid-communicating channel or directly communicates therewith out the fluid-communicating channel, the outlet of at least one of said riser reactor(s) communicates with the lower part of said dense bed reactor or any part of said fluid-communicating channel, the outlet of said dense bed reactor communicates with the inlet of a gas-solid separating apparatus located in said disengager through said disengager and/or through an optional transporting channel, the catalyst outlet of said disengager communicates with at least one position selected from the upper part of said stripper, any part of said fluid-communicating channel, and the lower part of said dense bed reactor, through at least one catalyst transporting channel, wherein the catalytic conversion apparatus is constructed so that the spent catalyst separated from the gas-solid separating apparatus located in the disengage is directed to the lower part of the dense bed reactor below the outlet of said riser reactor, or the stripper, without passing through the upper and middle parts of the dense bed reactor.