Thermal hydrocracking of heavy hydrocarbon oils with heavy oil r

Details Thermal hydrocracking of heavy hydrocarbon oils with heavy oil r Thermal hydrocracking of heavy hydrocarbon oils with heavy oil r

1980-02-19

1981-02-24

Gantz, Delbert E.

Mineral oils: processes and products

Chemical conversion of hydrocarbons

With prevention or removal of deleterious carbon...

208107, C10G 916, C10G 4700, C10G 4722

Patent

active

042526345

ABSTRACT:
An improved process is described for the hydrocracking of heavy hydrocarbon oils, such as oils extracted from tar sands. The heavy hydrocarbon oil feedstock in the presence of an excess of hydrogen is passed through a confined hydrocracking zone under upflow liquid conditions, and the effluent emerging from the top of the hydrocracking zone is passed into a hot separator where it is separated into a gaseous stream containing hydrogen and vaporous hydrocarbons and a liquid stream containing heavy hydrocarbons. The hot separator is maintained near the temperature of the hydrocracking zone and the effluent from the hydrocracking zone enters the separator in a lower region below the liquid level in the separator. The gaseous stream containing hydrogen and vaporous hydrocarbons is withdrawn from the top of the separator while a portion of the liquid phase in the separator is recycled to the hydrocracking zone without further treatment and in quantities sufficient to increase the superficial liquid flow velocity in the hydrocracking zone such that deposition of coke in the hydrocracking zone is substantially eliminated.

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