Hydrocracking of heavy oils in presence of pyrite particles

摘要

A slurry of heavy hydrocarbon oil (such as tar sand oil) and finely divided pyrite-containing additive is passed through a confined hydrocracking zone in the presence of hydrogen and the effluent is separated into a gaseous stream comprising hydrogen and vaporous hydrocarbons and a liquid stream containing heavy hydrocarbons. The additive can be a natural pyrite ore or coal containing pyrite. The presence of the pyrite-containing additive serves to greatly reduce coke precursors and thereby substantially prevent the formation of carbonaceous deposits in the reaction zone.