Patent ID: 9169449
Filing Date: 2015-10-27
Classification: B01J,C10G

Abstract:
1. A dual catalyst system for use in a heavy oil upgrade process, the catalyst system comprises: a particulate catalyst for use in an expanded catalyst zone of an ebullated bed reactor to produce an upgraded heavy oil; a pre-sulfided slurry catalyst having an average particle size ranging from 1 to 300 μm in a hydrocarbon oil diluent which is not heavy oil feedstock, prepared from a solution comprising at least a water-soluble metal precursor salt of a Primary metal selected from Group VIB metals and Group VIII metals, and sulfided by a sulfiding agent which is not heavy oil feedstock under sulfiding conditions at a molar ratio of sulfur to metal of at least 1.5:1; wherein the slurry catalyst upon being introduced into the ebullated bed reactor with a heavy oil feedstock is carried through the expanded catalyst zone and reduces formation of sediments and coke formation in the ebullated bed system.