Reforming catalyst made from the metals recovered from spent atmospheric resid desulfurization catalyst

Abstract

During hydrotreating of heavy oils in a typical atmospheric resid desulfurization (ARDS) unit to remove metal contaminants and sulfur, the catalysts are gradually deactivated by metal deposits of mainly nickel and vanadium. These metals can be effectively removed from the spent catalyst by acid extraction. A reforming catalyst can be prepared by impregnating a suitable catalyst support with this metal-laden extraction liquor. Catalyst prepared with the recovered vanadium showed significant dehydrocyclization activity to convert paraffins to aromatics