Process for hydrocracking a hydrocarbonaceous feedstock

Details Process for hydrocracking a hydrocarbonaceous feedstock Process for hydrocracking a hydrocarbonaceous feedstock

1998-10-28

2000-08-01

Griffin, Walter D.

Mineral oils: processes and products

Chemical conversion of hydrocarbons

With subsequent treatment of products

208100, 208103, 208108, 208109, C10G 900, C10G 4702, C10G 4712

Patent

active

060961910

ABSTRACT:
A catalytic hydrocracking process wherein a hydrocarbonaceous feedstock and a liquid recycle stream having a temperature greater than about 500.degree. F. and saturated with hydrogen is contacted with hydrogen and a metal promoted hydrocracking catalyst in a hydrocracking reaction zone at elevated temperature and pressure to obtain conversion to lower boiling hydrocarbons. The resulting hot, uncooled effluent from the hydrocracking reaction zone is hydrogen stripped in a stripping zone maintained at essentially the same pressure as the hydrocracking zone to produce a first gaseous hydrocarbonaceous stream and a first liquid hydrocarbonaceous stream. At least a portion of the first gaseous hydrocarbonaceous stream is condensed to produce a second liquid hydrocarbonaceous stream and a second hydrogen-rich gaseous stream. At least a portion of the first liquid hydrocarbonaceous stream is recycled to the hydrocracking reaction zone. At least a portion of the second hydrogen-rich gaseous stream supplies hydrogen to the hydrocracking reaction zone and to the stripping zone. At least a portion of the second liquid hydrocarbonaceous stream is recovered as product.

REFERENCES:
patent: 3546099 (1970-12-01), Sutherland
patent: 3574090 (1971-04-01), Hallman
patent: 4931165 (1990-06-01), Kalnes
patent: 5141630 (1992-08-01), Grosboll et al.
patent: 5164070 (1992-11-01), Munro

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