Process and apparatus for producing diesel from a hydrocarbon stream
AssigneeUop LLC
InventorsPaul R. Zimmerman, Peter Kokayeff
Life of this patent
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Abstract
A process and apparatus are disclosed for hydrotreating a hydrocarbon feed in a hydrotreating unit and hydrocracking a second hydrocarbon stream in a hydrocracking unit. The hydrocracking unit and the hydrotreating unit may share the same recycle gas compressor. A make-up hydrogen stream may also be compressed in the recycle gas compressor. The second hydrocarbon stream may be a diesel stream from the hydrotreating unit. The diesel stream may be a diesel and heavier stream from a bottom of a hydrotreating fractionation column.
Claims20
A process for producing diesel from a hydrocarbon stream comprising:
- hydrotreating a hydrocarbon stream in the presence of a hydrotreating hydrogen stream and hydrotreating catalyst;
- separating a hydrotreating effluent stream into a vaporous hydrotreating effluent stream comprising hydrogen and a liquid hydrotreating effluent stream;
- fractionating the liquid hydrotreating effluent stream to provide a diesel stream;
- and
- hydrocracking the diesel stream in the presence of a hydrocracking hydrogen stream and hydrocracking catalyst to provide a hydrocracking effluent stream.
A process for producing diesel from a hydrocarbon stream comprising:
- hydrotreating a hydrocarbon stream in the presence of a hydrotreating hydrogen stream and hydrotreating catalyst to provide a hydrotreating effluent stream;
- separating the hydrotreating effluent stream into a vaporous hydrotreating effluent stream comprising hydrogen and a liquid hydrotreating effluent stream;
- compressing the vaporous hydrotreating effluent stream to provide a compressed hydrogen stream;
- taking a hydrocracking hydrogen stream from the compressed hydrogen stream;
- fractionating the liquid hydrotreating effluent stream to provide a diesel and heavier stream;
- and
- hydrocracking the diesel and heavier stream in the presence of the hydrocracking hydrogen stream and hydrocracking catalyst to provide a hydrocracking effluent stream.
A process for producing diesel from a hydrocarbon stream comprising:
- hydrotreating a hydrocarbon stream in the presence of a hydrotreating hydrogen stream and hydrotreating catalyst to provide a hydrotreating effluent stream;
- separating the hydrotreating effluent stream into a vaporous hydrotreating effluent stream comprising hydrogen and a liquid hydrotreating effluent stream;
- fractionating the liquid hydrotreating effluent stream to provide a diesel stream;
- hydrocracking the diesel stream in the presence of the hydrocracking hydrogen stream and hydrocracking catalyst at a pressure of about 6.9 MPa (gauge) (1000 psig) to about 11.0 MPa (gauge) (1600 psig) to provide a hydrocracking effluent stream;
- and
- fractionating a hydrocracking effluent stream to provide a low sulfur diesel stream.
Dependencies are inferred from the claim text.