Hydrocracking process

Details Hydrocracking process Hydrocracking process

1985-07-31

1986-10-21

Metz, Andrew H.

Mineral oils: processes and products

Chemical conversion of hydrocarbons

Plural serial stages of chemical conversion

208112, C10G 6510, C10G 6518

Patent

active

046184120

ABSTRACT:
A process for hydrocracking a hydrocarbon feedstock having a propensity to form polynuclear aromatic hydrocarbon compounds to suppress fouling the processing unit. The hydrocracking method includes contacting the hydrocarbon feedstock with a crystalline zeolite hydrocracking catalyst, contacting at least a portion of the resulting unconverted hydrocarbon oil containing polynuclear aromatic compounds with an iron catalyst in the presence of hydrogen to hydrogenate and hydrocrack the polynuclear aromatic hydrocarbon compounds, and recycling unconverted hydrocarbon oil having a reduced concentration of polynuclear aromatic compounds to the hydrocracking zone.

REFERENCES:
patent: 2057971 (1936-10-01), Pfirrmann
patent: 3501395 (1970-03-01), Miale
patent: 3816298 (1974-06-01), Aldridge
patent: 4067799 (1978-01-01), Bearden, Jr. et al.
patent: 4411768 (1983-10-01), Unger et al.
patent: 4421635 (1983-12-01), Murakami et al.
patent: 4447315 (1984-05-01), Lamb et al.

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