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US 9,284,498 B2Granted
Process for producing diesel
AssigneeUop LLC
InventorsPeter Kokayeff, Paul R. Zimmerman
Life of this patent
Estimating the term…
Abstract
A process is disclosed for hydrocracking a primary hydrocarbon feed and a diesel co-feed in a hydrocracking unit and hydrotreating a diesel product from the hydrocracking unit in a hydrotreating unit. The diesel stream fed through the hydrocracking unit is pretreated to reduce sulfur and ammonia and can be upgraded with noble metal catalyst.
Claims20
A process for producing diesel from a hydrocarbon stream comprising:
- hydrotreating a primary hydrocarbon stream and a co-feed hydrocarbon stream comprising diesel in the presence of a hydrogen stream and pretreating catalyst to provide a pretreated effluent stream;
- hydrocracking the pretreated effluent stream in the presence of hydrocracking catalyst and hydrogen to provide a hydrocracking effluent stream;
- separating the hydrocracking effluent in a separator to provide at least a vaporous hydrocracking effluent stream and a liquid hydrocracking effluent stream;
- fractionating at least the liquid hydrocracking effluent stream in a fractionation column to provide a diesel stream;
- and
- hydrotreating the diesel stream in the presence of a hydrotreating hydrogen stream and hydrotreating catalyst to provide a hydrotreating effluent stream.
3 more elements
A process for producing diesel from a hydrocarbon stream comprising:
- feeding a primary hydrocarbon stream to a pretreat hydrotreating reactor;
- co-feeding a co-feed hydrocarbon stream having an initial boiling point between about 121° C. (250° F.) and about 288° C. (550° F.) to said pretreat hydrotreating reactor;
- hydrotreating said primary hydrocarbon stream and said co-feed hydrocarbon stream in the presence of a hydrogen stream and pretreating catalyst to provide a pretreated effluent stream;
- hydrocracking the pretreated effluent stream in the presence of hydrocracking catalyst and the hydrocracking hydrogen stream remaining in the pretreated effluent stream to provide a hydrocracking effluent stream;
- separating the hydrocracking effluent in a separator to provide at least a vaporous hydrocracking effluent stream and a liquid hydrocracking effluent stream;
- fractionating at least the liquid hydrocracking effluent stream in a fractionation column to provide a diesel stream having an initial boiling point between about 121° C. (250° F.) and about 288° C. (550° F.);
- and
- hydrotreating the diesel stream in the presence of a hydrotreating hydrogen stream and hydrotreating catalyst to provide a hydrotreating effluent stream.
5 more elements
A process for producing diesel from a hydrocarbon stream comprising:
- feeding a primary hydrocarbon stream having an initial boiling point of no less than about 150° C. (302° F.) and an end point of no more than about (565° C.) 1050° F. to a pretreat hydrotreating reactor;
- co-feeding a co-feed hydrocarbon stream having an initial boiling point between about 121° C. (250° F.) and about 288° C. (550° F.) to said pretreat hydrotreating reactor;
- hydrotreating the primary hydrocarbon stream and the co-feed hydrocarbon stream in the presence of the hydrocracking hydrogen stream and pretreating catalyst to provide a pretreated effluent stream;
- hydrocracking the pretreated effluent stream in the presence of hydrocracking catalyst the hydrocracking hydrogen stream remaining in the pretreated effluent stream to provide a hydrocracking effluent stream;
- separating the hydrocracking effluent in a separator to provide at least a vaporous hydrocracking effluent stream and a liquid hydrocracking effluent stream;
- fractionating at least the liquid hydrocracking effluent stream in a fractionation column to provide a diesel stream having an initial boiling point between about 121° C. (250° F.) and about 288° C. (550° F.);
- and
- hydrotreating the diesel stream in the presence of a hydrotreating hydrogen stream and hydrotreating catalyst to provide a hydrotreating effluent stream.
5 more elements
Dependencies are inferred from the claim text.