Patent ID: 6022390
Filing Date: 2000-02-08
Classification: B01D,B01J,B04C,C10G,F23C,F23J

Abstract:
A cyclone assembly for separating solids from a gas flow in fluidized catalytic process equipment, said assembly comprising(a) a cyclone cascade comprised of at least two multi-inlet cyclones, each of said cyclones comprising:a separation assembly comprising a separation chamber having an essentially upright aligned longitudinal axis and an essentially circular cross section of its interior wall, said separation chamber having a guide vane louver for inducing a vorticous flow of the gas to be treated circulating close to the interior wall of said separation chamber, thus effecting the separation of the solids from the gaseous phase under the effect of the centrifugal force,an infeed nozzle of gases to be treated, said nozzle being connected to said separation chamber,a center tube connected to said separation chamber for removal of gases, anda dipleg for recovering the solids separated from the gas flow,(b) a downward return leg of a subsequent cyclone in the cascade being fitted inside the dipleg of the preceding cyclone, and(c) said gas infeed nozzle of at least the second of said cyclones having an annular cross-section.