초록 ▼

A process is described for the hydrocracking of heavy hydrocarbon oils which permits pitch conversions of over 90%, and preferably over 95%. A slurry of a heavy hydrocarbon oil and carbonaceous additive particles, such as coal, is passed in the presence of hydrogen through a confined vertical hydroc

A process is described for the hydrocracking of heavy hydrocarbon oils which permits pitch conversions of over 90%, and preferably over 95%. A slurry of a heavy hydrocarbon oil and carbonaceous additive particles, such as coal, is passed in the presence of hydrogen through a confined vertical hydrocracking zone at high temperatures and pressures. An effluent which is almost entirely a gaseous phase is removed from the top of the hydrocracking zone, while a drag stream is removed from the remaining liquid in the hydrocracking zone. The top effluent has the advantage of being substantially free of pitch and metals, with the unreacted carbonaceous additives, metals and any unconverted pitch being all concentrated in the drag stream.

대표청구항 ▼

A process for hydrocracking a heavy hydrocarbon oil containing a substantial portion of pitch which boils above 524°C., which comprises: (a) passing a slurry feed of said heavy hydrocarbon oil and from about 0.01-60 wt.% of carbonaceous additive particles in the presence of hydrogen upwardly through

A process for hydrocracking a heavy hydrocarbon oil containing a substantial portion of pitch which boils above 524°C., which comprises: (a) passing a slurry feed of said heavy hydrocarbon oil and from about 0.01-60 wt.% of carbonaceous additive particles in the presence of hydrogen upwardly through a confined vertical hydrocracking zone, said hydrocracking zone being maintained at a temperature between about 350°and 500°C., a pressure of at least 3.5 MPa and a space velocity of up to 4 volumes of hydrocarbon oil per hour per volume of hydrocracking zone capacity, (b) removing from the top of said hydrocracking zone a vaporous effluent comprising hydrogen and vaporous hydrocarbons and being substantially free of pitch and metals, and (c) removing from the remaining liquid in the hydrocracking zone a drag stream comprising carbonaceous additive, metals and any unconverted pitch, the products coming off at the top of the reactor containing substantially only vaporous hydrocarbons and the drag stream containing substantially all of the liquid material produced during the hydrocracking whereby a pitch conversion of over 90% is achieved.