Patent ID: 6616899
Filing Date: 2003-09-09
Classification: C10G

Abstract:
An apparatus for the fluidized cracking of a light and a heavy feedstock, the apparatus comprising:a first contacting conduit defining a discharge outlet at its downstream end; a first feed conduit for delivering a first feedstream to the first contacting conduit; a regenerator conduit for passing catalyst from a regenerator to said first contacting conduit; a blending vessel in direct communication with the discharge outlet of the first contacting conduit; a second contacting conduit defining a catalyst inlet at an upstream end having direct communication with the blending vessel and defining a mixture outlet at its downstream end, said blending vessel having a larger diameter than said second contacting conduit; a second feed conduit for charging a second feedstream to at least one of the blending vessel and the second contacting conduit; a primary catalyst separator for receiving a mixture of catalyst and vapors from the: downstream end of the second contacting conduit; and at least one fluid separator for separating cracked vapors from the second contacting conduit into a light product stream and a heavy product stream.