Abstract: A multiple single-stage process for the conversion of heavy hydrocarbonaceous charge stock into a lower boiling distillate hydrocarbon product. Fresh charge stock and hydrogen are introduced into a first catalytic reaction zone for substantially 100% conversion of the feed. Hydrocracked product effluent from the first hydrocracking reaction zone which comprises a predetermined distillate fraction is passed with an accucracked effluent from a second catalytic hydrocracking or accucracking reaction zone into a separation zone and separated into various hydrocarbon streams including a light hydrocarbon stream comprising the distillate product, a middle hydrocarbon stream and a heavy hydrocarbon stream. The middle hydrocarbon stream comprising said distillate fraction and hydrogen is introduced into the second catalytic hydrocracking or accucracking reaction zone for conversion into a lower boiling accucracked effluent stream comprising the distillate hydrocarbons boiling in the distillate product range.
Type:
Grant
Filed:
June 20, 1986
Date of Patent:
December 15, 1987
Assignee:
UOP Inc.
Inventors:
Mark E. Reno, Robert K. Olson, Tom N. Kalnes
Abstract: A lead-tolerant exhaust gas oxidation catalytic composite for oxidizing gas in the presence of SO.sub.2 comprising a refractory inorganic oxide support material having deposited thereon a noble metal component and having dispersed thereon a protective coating of titania. The refractory support material may be deposited with a noble metal and thereafter applied as a washcoat on a low surface area support matrix followed by a titanium washcoat superimposed thereover. Also, a method for treating exhaust gases containing lead components by contacting the exhaust gas with the catalytic composite is disclosed.
Abstract: A novel phosphorus-modified alumina composite comprising a hydrogel having a molar ratio on an elemental basis of phosphorus to aluminum of from 1:1 to 1:100 together with a surface area of about 140 to 450 m.sup.2 /gm is defined. The composite is prepared by admixing an alumina hydrosol with a phosphorus-containing compound to form a phosphorus-modified sol and gelling said admixture. The phosphorus-modified alumina composite is useful as a catalyst support for various catalytic reactions.
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