TECHNOLOGY FOCUS - CHEMICAL ENGINEERING - Preferred Method: The hot syn gas containing hydrogen is introduced into the kiln at 700-2500degreesF. It is obtained from coal gasification. The pressure inside the rotary kiln is 1-100 psi. The crushed hydrocarbonaceous solids are preheated to 100-350degreesF before being introduced into the kiln, where the crushed solids have a residence time in the kiln of 10-60 minutes. The crude oil is introduced into the kiln at a rate of 30-50 gallons of crude oil/ton of crushed oil shale, or at a rate of 20-25 gallons of crude oil/ton of tar sands. The method further comprises blending the crushed hydrocarbonaceous solids to provide a uniform feed composition prior to the step of preheating; fractionating the vaporized hydrocarbon materials and enriched gas into desired fractions, where the fractions include gasoline, kerosene, gas oil, heavy gas oil and vacuum oil; and producing electricity in a combined cycle comprising recovering the enriched gas for use as a fuel gas, combusting the fuel gas to produce a first heated gas which is directed to a gas turbine which is operatively connected to a first generator where the first heated gas is reduced in pressure through the gas turbine to produce a second heated gas, and using the second heated gas to produce steam which is directed to a steam turbine which is operatively connected to a second generator. The enriched gas from the step of fractionating is passed through a catalytic converter to form methanol. It is combined with nitrogen from a coal gasification process to produce liquid ammonia. The ammonia is further reacted with carbon dioxide to produce urea.    TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Component: The hot gas is syn gas, nitrogen gas, hydrogen gas, carbon dioxide gas, and/or carbon monoxide. It is preferably a syn gas containing hydrogen (10-70 vol.%), carbon dioxide (5-30 vol.%), and carbon monoxide (10-70 vol.%).    TECHNOLOGY FOCUS - MECHANICAL ENGINEERING - Preferred Component: The system further comprises a fractionation column operatively connected to the separation chamber; a combined-cycle electricity generator operatively connected to the separation chamber; and a heat recovery unit operatively associated with the system for recovery of heat from spent solids. The hot gas source is a coal gasifier configured to produce a hot syn gas. The rotary kiln slopes downward at an angle of 3-5degrees.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Component: The hot gas is syn gas, nitrogen gas, hydrogen gas, carbon dioxide gas, and/or carbon monoxide. It is preferably a syn gas containing hydrogen (10-70 vol.%), carbon dioxide (5-30 vol.%), and carbon monoxide (10-70 vol.%).    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Component: The injected hydrocarbon is a solid gilsonite hydrocarbon; a liquid hydrocarbon introduced into the kiln at a rate of 5-50 gallons of liquid hydrocarbon/ton of crushed hydrocarbonaceous solids; or liquid crude oil. The crushed hydrocarbonaceous solids are oil shale, preferably a Green River oil shale containing 5-25 wt.% hydrocarbonaceous material; or tar sands.