Process for producing a zeolite riser cracker feed from a residu

Details Process for producing a zeolite riser cracker feed from a residu Process for producing a zeolite riser cracker feed from a residu

1973-08-22

1976-02-03

Gantz, Delbert E.

Mineral oils: processes and products

Refining

Sulfur removal

208 58, 208216, 208251H, C10G 3400

Patent

active

039363708

ABSTRACT:
A multiple stage hydrodesulfurization process is described for the catalytic hydrodesulfurization and hydrodemetallization of a residual petroleum oil boiling above the gasoline range to prepare a zeolite riser cracking feed. The product of the hydrodesulfurization section comprises essentially material boiling above the gasoline range and comprises little material boiling within the gasoline range in order to preserve the feed for subsequent cracking to gasoline without added hydrogen. The hydrodesulfurization-demetallization section comprises an initial stage involving relatively high hydrogen pressure in the presence of a catalyst comprising a relatively low proportion of catalytically active hydrogenation metals. The process employs a final stage in series employing a relatively lower hydrogen pressure and a catalyst comprising a relatively higher proportion of hydrogenation metals. The stream entering the final stage contains an amount up to 10, 20 or even 25 weight percent of the asphaltene content of the charge to the first stage while the effluent from the final stage is essentially free of asphaltenes. The metals content of the final stage effluent is so low that said effluent can be charged without blending with a distillate oil to a fluidized zeolite riser cracking unit (FCC) to produce gasoline and fuel oil so that the zeolite catalyst make-up requirement due to metals accumulation on the zeolite catalyst is no greater than the zeolite make-up requirement when a distillate gas oil comprises the entire feed to the riser.

REFERENCES:
patent: 2902429 (1959-09-01), Scott
patent: 3155608 (1964-11-01), Hopper et al.
patent: 3349027 (1967-10-01), Carr et al.
patent: 3362901 (1968-01-01), Szepe et al.
patent: 3477943 (1969-11-01), Masologites et al.
patent: 3682813 (1972-08-01), Dun et al.
patent: 3732155 (1973-05-01), Cecil et al.
patent: 3761399 (1973-09-01), Kinney et al.
patent: 3809644 (1974-05-01), Johnson et al.
patent: 3817855 (1974-06-01), Smith et al.
patent: 3830728 (1974-08-01), Mounce
patent: 3859199 (1975-01-01), Gatsis

Affiliated with

Also associated with

Rating

Process for producing a zeolite riser cracker feed from a residu does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process for producing a zeolite riser cracker feed from a residu, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for producing a zeolite riser cracker feed from a residu will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2121531