FCC unit catalyst stripper

Details FCC unit catalyst stripper FCC unit catalyst stripper

1998-09-01

1999-06-08

Griffin, Walter D.

Mineral oils: processes and products

Chemical conversion of hydrocarbons

Cracking

208146, 208150, 208151, 208163, 208164, C10G 3500

Patent

active

059102403

ABSTRACT:
An improved stripper section design is provided for use in fluid catalytic cracking (FCC) units. The stripper section contains means for imparting rotational movement to the FCC cracking catalyst as it traverses the stripping section. In one embodiment the stripper section contains at least one rotation vane that is preferably disposed on the surface of a stripper section tray. The rotation vane provides angular, rotational movement to the cracking catalyst as it traverses the stripper section. Vertical movement is imparted to the cracking catalyst due to gravity and radial movement is imparted to the catalyst due to the slanted nature of the tray. Through the use of the rotation vanes the contact between the catalyst particles and the stripping steam is increased, thereby improving the overall efficiency of the FCC operation.

REFERENCES:
patent: 2069192 (1937-01-01), Behr
patent: 3717938 (1973-02-01), Sylvest

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