Mineral oils: processes and products – Chemical conversion of hydrocarbons – Plural serial stages of chemical conversion
Patent
1988-05-09
1989-07-25
McFarlane, Anthony
Mineral oils: processes and products
Chemical conversion of hydrocarbons
Plural serial stages of chemical conversion
208 49, 208 59, 208 18, 585739, C10G 6512, C10G 6902
Patent
active
048511099
ABSTRACT:
An integrated refining scheme for hydroprocessing high boiling fractions such as gas oil and catalytically cracked cycle oils to produce premium quality distillates, especially jet fuels and naphthas suitable for reforming into high octane gasoline. In addition, unconverted, high boiling fractions suitable for processing by conventional refining techniques into high quality, low pour point lube base stocks are obtained. The integrated hydroprocessing comprises a first stage hydrocracking step employing an aromatic selective hydrocracking catalyst based on a large pore size acidic component such as amorphous alumina or silica alumina or a large pore size zeolite such as zeolite X or zeolite Y. The hydrocracking may be operated either in a naphtha directing mode under conditions of moderate to high severity or under conditions of low to moderate severity to produce a relatively higher proportion of product boiling in the middle distillate range. The unconverted fraction from the hydrocracking step is passed to a second step in which it is hydroprocessed over a zeolite beta catalyst with additional hydrogenation-dehydrogenation functionality. In this stage, the paraffins remaining in the feed are attacked by the zeolite beta to form isoparaffins and conditions may be controlled to favor hydroisomerization over hydrocracking so as to increase the yield of middle distillate product, especially of highly isoparaffinic jet fuels and diesel fuel.
REFERENCES:
patent: 3647678 (1972-03-01), Egan
patent: 3654133 (1972-04-01), Olson
patent: 3730876 (1973-05-01), Sequeira
patent: 3915843 (1975-10-01), Franck et al.
patent: 4347121 (1982-08-01), Mayer
patent: 4383913 (1983-05-01), Powell
patent: 4419220 (1983-12-01), LaPierre
patent: 4435275 (1984-03-01), Derr
patent: 4501926 (1985-02-01), LaPierre
patent: 4518485 (1985-05-01), LaPierre
patent: 4541919 (1985-09-01), LaPierre
patent: 4554065 (1985-11-01), Albinson
patent: 4568655 (1986-02-01), Oleck
patent: 4599162 (1986-07-01), Yen
patent: 4601993 (1986-07-01), Chu
patent: 4612108 (1986-09-01), Angevine et al.
patent: 4696732 (1987-09-01), Angevine
patent: 4713167 (1987-12-01), Reno et al.
patent: 4764266 (1988-08-01), Chen et al.
Farrell, Oil & Gas Journal, May 19, 1986, pp. 47-51.
Chen Nai Y.
LaPierre Rene B.
Partridge Randall D.
Wong Stephen S.
Keen Malcolm D.
McFarlane Anthony
McKillop Alexander J.
Mobil Oil Corporation
Speciale Charles J.
LandOfFree
Integrated hydroprocessing scheme for production of premium qual does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Integrated hydroprocessing scheme for production of premium qual, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Integrated hydroprocessing scheme for production of premium qual will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2356222