Patent ID: 7578928
Filing Date: 2009-08-25
Classification: B01J,C10G

Abstract:
1. A method of hydroprocessing a heavy oil feedstock, comprising: preparing a heavy oil feedstock comprised of a substantial quantity of hydrocarbons having a boiling point greater than about 650° F. and a colloidal or molecular catalyst dispersed throughout the feedstock; heating or maintaining the heavy oil feedstock at a hydrocracking temperature within a hydrocracking reactor to form hydrocarbon free radicals from the heavy oil feedstock, transferring the upgraded material, together with residual colloidal or molecular catalyst and hydrogen, to a hot separator so as to separate gaseous and volatile fractions from a liquid fraction; withdrawing the liquid fraction from the hot separator and introducing the liquid fraction together with residual colloidal or molecular catalyst into a guard bed containing a solid supported catalyst for hydroprocessing of the liquid fraction, introducing the upgraded liquid fraction into a fixed bed hydroprocessing reactor containing a solid supported catalyst in order to further upgrade the upgraded liquid fraction.