Fluidized catalytic cracking process and apparatus

Details Fluidized catalytic cracking process and apparatus Fluidized catalytic cracking process and apparatus

1998-12-23

2000-11-21

Tran, Hien

Chemical apparatus and process disinfecting, deodorizing, preser

Chemical reactor

Fluidized bed

422141, 422145, 422146, 422147, B01J 826

Patent

active

061498750

ABSTRACT:
A fluidized catalytic cracking apparatus includes a riser containing a regenerated catalyst and adsorbant, and has a first inlet for introduction of high velocity steam, a second inlet for introduction of a feed stream containing heavy residual fractions with high concentrations of conradson coke, metals including vanadium and nickel, and additional poisons including nitrogen, a third inlet for introduction of an adsorbent, and a fourth inlet disposed above the third inlet means for introduction of a regenerated catalyst, the adsorbent having a particle size which is larger than that of the regenerated catalyst. A stripper is provided into which the riser extends for causing separation of a hydrocarbon fraction from spent catalyst and adsorbent, and a separator is connected to the stripper and has a base, an inlet at the base for introduction of steam in the upward direction so as to provide a transport velocity in the upward direction for the spent catalyst and cause a separation of the particles of the spent catalyst from the adsorbent in use. A regenerator is connected to the separator and has an outlet and is in flow communication with the fourth inlet for introduction of the regenerated catalyst into the riser. A burner is provided for receiving the adsorbent from the separator and for causing a regeneration thereof, the burner having an inlet for introduction of oxygen containing gas and an outlet in flow communication with the third inlet for introduction of the adsorbent into the riser. A lift line is connected between the separator and the regenerator for allowing a flow of the spent catalyst from the separator into the regenerator while leaving the adsorbent within the separator in a fluidized condition the lift line having a plurality of steam inlets disposed at different elevations along its length for introduction of steam to provide said transport velocity.

REFERENCES:
patent: 4064038 (1977-12-01), Vermilion, Jr.
patent: 4787967 (1988-11-01), Herbst et al.
patent: 4814068 (1989-03-01), Herbst et al.
patent: 4875997 (1989-10-01), Langford
patent: 4892643 (1990-01-01), Herbst et al.
patent: 4895636 (1990-01-01), Chen et al.
patent: 4904281 (1990-02-01), Raterman
patent: 4927522 (1990-05-01), Herbst et al.
patent: 4971766 (1990-11-01), Chen et al.
patent: 5059302 (1991-10-01), Weinberg et al.
patent: 5110775 (1992-05-01), Owen
patent: 5196172 (1993-03-01), Weinberg et al.
Bergmann/Schafer: Lehrbuch der Experimentalphysik [Textbook on Experimental Physics], vol. 6, 1992, pp. 452 et seq.

Affiliated with

Also associated with

Rating

Fluidized catalytic cracking process and apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Fluidized catalytic cracking process and apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fluidized catalytic cracking process and apparatus will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1254142