Production of diesel fuel by hydrogenation of a diesel feed
AssigneeABB Lummus Crest Inc.
InventorsJames W. Reilly, Gary Hamilton
Life of this patent
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Abstract
A process for producing diesel fuel from a diesel hydrocarbon feed. Hydrogen is fed cocurrently with the feed to a first hydrogenation zone in the presence of a hydrogenation catalyst. Liquid effluent from the first hydrogenation zone is then passed to a second hydrogenation zone, wherein the liquid effluent is contacted countercurrently with hydrogen in the presence of a hydrogenation catalyst. Preferred hydrogenation catalysts are those comprising non-noble metals in the first hydrogenation zone, and may comprise noble or non-noble metals in the second hydrogenation zone.
Claims14
A process for producing diesel fuel by hydrogenation of a hydrocarbon feed, comprising:
- passing a hydrocarbon feed in cocurrent contact with a hydrogen gas through a first hydrogenation zone in the presence of a hydrogenation catalyst, thereby at least partially hydrogenating said feed, said feed having an about 10% by volume boiling point of from about 300.degree. F. to about 500.degree. F. and an about 90% by volume boiling point of at least about 500.degree. F. and no greater than 750.degree. F.
- removing from said first hydrogenation zone a gas phase effluent comprising hydrogen and vaporized liquid materials, and a partially hydrogenated liquid hydrocarbon effluent;
- further hydrogenating the liquid hydrocarbon effluent in a second hydrogenation zone by passing a hydrogen-rich gas into the second hydrogenation zone countercurrently to the liquid hydrocarbon effluent in the presence of a hydrogenation catalyst;
- and
- recovering from said second hydrogenation zone a gas phase effluent comprising hydrogen and vaporized liquid material and a liquid phase effluent comprising diesel fuel.
Dependencies are inferred from the claim text.