NOVEL SOLID GAS SEPARATION SYSTEM FOR FLUID CATALYTIC CRACKING UNIT REGENERATORS

摘要

The invention relates to a novel solid gas separation system suitable for all types of FCC unit regenerators. The inventive system consists of a device for the separation of solid particles contained in a gas stream originating from the regeneration zone of a fluid catalytic cracking unit (FCC) defined by an inner cylindrical casing (3) centred around the vertical axis of the regeneration zone and an outer casing (1) having an essentially horizontal wall (15) followed by a curvilinear wall (16) and an essentially vertical wall (17), said group of walls (15, 16, 17) covering the inner casing (3) and forming a set of separation chambers (2) distributed into enclosures located around the inner casing (3) containing the solid gas suspension to be separated. Said novel separation system enables very effective separation while minimising head loss and requiring only a single downstream cyclone stage.