External integrated disengager stripper and its use in fluidized

Details External integrated disengager stripper and its use in fluidized External integrated disengager stripper and its use in fluidized

1992-10-27

1994-05-24

Dentz, Bernard

Mineral oils: processes and products

Chemical conversion of hydrocarbons

Cracking

208152, 208155, 208161, 422144, 422145, 422147, C10G 1118

Patent

active

053146115

ABSTRACT:
A method and apparatus for an FCC process uses dissipator plates at the outlet of a disengaging vessel to provide a quick separation of catalyst from product vapors and to prevent reentrainment of catalyst into the disengaging vessel. The process and apparatus use a riser for the conversion of an FCC feedstock and direct the effluent from the riser directly into a disengaging vessel to separate catalyst from the product vapors. Catalyst is directed downwardly out of the outlet of the disengaging vessel and through a series of dissipator plates that eliminate the tangential velocity that would be otherwise introduced by the vortex and would lead to reentrainment of catalyst. A stripping vessel is located immediately below the disengaging vessel outlet to receive catalyst as it leaves the dissipator plates. The apparatus and process are specifically suited for operation without a reactor vessel for containment of the disengaging vessel and cyclones.

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