Back to results
US 4,379,045 AGranted
Co-processing of residual oil and coal
AssigneeMobil Oil Corporation
InventorCostandi A. Audeh
Life of this patent
Estimating the term…
Abstract
Visbreaking a mixture of petroleum residuum, coal and catalytic cracking catalyst under conditions severe enough to effect conversion but not so severe as to produce substantial quantities of coke produces a range of products including gaseous olefins and gasoline distillate. The solids recovered from the visbreaking operation can be processed to produce a synthesis gas of carbon monoxide and hydrogen.
Claims3
A process for the production of gaseous olefins and light liquid distillate from residual oil co-processed with coal which comprises:
- (a) heating a mixture of residual oil, pulverized coal and a rare earth exchanged zeolite Y cracking catalyst under conditions effective to reduce the viscosity of the residual oil without the substantial formation of coke, the amount of said cracking catalyst being effective to provide olefinic hydrocarbons, a distillate in the gasoline boiling range, light gas oil, and heavy gas oil,
- (b) separating the reaction mixture of step (a) into a gaseous phase, a liquid phase and a solid phase comprising cracking catalyst, coal ash and coal solids, and
- (c) fractionally distilling the gaseous and liquid phase of step (b) to provide a light olefinic hydrocarbon fraction, a distillate in the gasoline boiling range, light gas oil, heavy gas oil, and a bottoms fraction.
Dependencies are inferred from the claim text.