Catalytic cracking with delayed quench

Details Catalytic cracking with delayed quench Catalytic cracking with delayed quench

1992-05-04

1999-09-21

Myers, Helane

Mineral oils: processes and products

Chemical conversion of hydrocarbons

With prevention or removal of deleterious carbon...

208113, 208100, 208103, 208153, 208127, 208 48R, C10G 916

Patent

active

059549424

ABSTRACT:
A process for thermally and catalytically upgrading a heavy feed in a single riser reactor FCC unit is disclosed. A heavy feed is cracked in the base of the riser at higher than normal cracking temperatures for at least 1.0 seconds of vapor residence time, then quenched. Quenching with large amounts of quench, preferably downstream of the mid point of the riser, increases conversion as compared to use of the same amount of quench within one second. Small amounts of quench, near the riser outlet, crack heavy feed roughly as well as large amounts of quench, near the base of the riser. High velocity, atomizing quench nozzles reduce riser pressure and/or catalyst slip in downstream portions of the riser, further increasing gasoline selectivity and reducing coke yields.

REFERENCES:
patent: 3758403 (1973-09-01), Rosinski et al.
patent: 4218306 (1980-08-01), Gross et al.
patent: 4356338 (1982-10-01), Young
patent: 4764268 (1988-08-01), Lane
patent: 4786400 (1988-11-01), Farnsworth
patent: 4804459 (1989-02-01), Bartholic et al.
patent: 4818372 (1989-04-01), Mauleon et al.
patent: 4978440 (1990-12-01), Krambect et al.
patent: 5019239 (1991-05-01), Owen
patent: 5043058 (1991-08-01), Forgac et al.
patent: 5073249 (1991-12-01), Owen
patent: 5087349 (1992-02-01), Goelzer et al.
Modeling Revamps of Riser Reactors of the FCCUS: by J. Corella Dept. Aiche Spain pp. 110-115 No. 291 vol. 85.

Affiliated with

Also associated with

Rating

Catalytic cracking with delayed quench does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-76696