1
Alfred G Comolli, Lap Keung Lee: Catalytic multi-stage process for hydroconversion and refining hydrocarbon feeds. Hydrocarbon Technologies, Fred A Wilson, February 20, 2001: US06190542 (110 worldwide citation)

A multi-stage catalytic hydrogenation and hydroconversion process for heavy hydrocarbon feed materials such as coal, heavy petroleum fractions, and plastic waste materials. In the process, the feedstock is reacted in a first-stage, back-mixed catalytic reactor with a highly dispersed iron-based cata ...


2
Bruce P Pelrine, Alfred G Comolli, Lap Keung Lee: Iron-based ionic liquid catalysts for hydroprocessing carbonaceous feeds. Hydrocarbon Technologies, Fred A Wilson Agent, October 31, 2000: US06139723 (73 worldwide citation)

A highly dispersed iron-based ionic liquid or liquid-gel catalyst which may be anion-modified and metals-promoted has high catalytic activity, and is useful for hydrocracking/hydrogenation reactions for carbonaceous feed materials. The catalyst is produced by aqueous precipitation from saturated iro ...


3
Vivek R Pradhan, Alfred G Comolli, Lap Keung Lee: Dispersed anion-modified phosphorus-promoted iron oxide catalysts. Hydrocarbon Technologies, Fred A Wilson, February 16, 1999: US05871638 (62 worldwide citation)

A dispersed fine-sized anion-modified and phosphorus-promoted iron-oxide slurry catalyst having high surface area exceeding 100 m.sup.2 /gm and high catalytic activity, and which is useful for hydrogenation and hydroconversion reactions for carbonaceous feed materials is disclosed. The catalyst is s ...


4
Alfred G Comolli, Partha S Ganguli: Porous metal oxide supported carbon-coated catalysts and method for producing same. HRI, Fred A Wilson, August 6, 1991: US05037791 (40 worldwide citation)

Supported carbon-coated catalyst material and a method for producing and using same in catalytic reaction processes, preferably in ebullated or fluidized catalyst beds. The catalyst materials are prepared by depositing a porous carbon layer on a support material of a selected metal oxide or compound ...


5
Vivek R Pradhan, Alfred G Comolli, Lap Keung Lee: Dispersed anion-modified iron oxide catalysts for hydroconversion processes. Fred A Wilson, February 2, 1999: US05866501 (31 worldwide citation)

A dispersed fine-sized anion-modified iron oxide slurry catalyst having high surface area exceeding about 100 m.sup.2 /gm and high catalytic activity, and which is useful for hydrogenation and hydroconversion reactions for carbonaceous feed materials is disclosed. The catalyst is synthesized by rapi ...


6
Michael C Chervenak, Alfred G Comolli: Catalytic hydrogenation process and apparatus with improved vapor liquid separation. Hydrocarbon Research, Michael A Jacobs, September 9, 1980: US04221653 (29 worldwide citation)

A continuous hydrogenation process and apparatus wherein liquids are contacted with hydrogen in an ebullated catalyst reaction zone with the liquids and gas flowing vertically upwardly through that zone into a second zone substantially free of catalyst particles and wherein the liquid and gases are ...


7
James B MacArthur, Joseph B McLean, Alfred G Comolli: Two-stage co-processing of coal/oil feedstocks. HRI, Fred A Wilson, August 1, 1989: US04853111 (22 worldwide citation)

A process for two-stage catalytic co-processing of coal and heavy petroleum hydrocarbon liquid fractions to produce increased yields of low-boiling hydrocarbon liquid and gas products. In the process, the particulate coal is slurried with a petroleum residuum and optionally with a process-derived hy ...


8
Alfred G Comolli: Drying and passivating wet coals and lignite. Hydrocarbon Research, Michael A Jacobs, February 10, 1981: US04249909 (21 worldwide citation)

This invention discloses a staged process for drying wet carbonaceous materials such as sub-bituminous coal or lignite containing at least about 10 weight percent moisture, usually 15-50 weight percent moisture, by first heating the wet material under low partial pressure of moisture to permit the c ...


9
Alfred G Comolli: Process for phase separation. Hydrocarbon Research, Michael A Jacobs, April 24, 1979: US04151073 (19 worldwide citation)

This invention provides a continuous process for separating a gaseous phase from a hydrocarbon liquid containing carbonaceous particulates and gases. The liquid is fed to a cylindrical separator, with the gaseous phase being removed therefrom as an overhead product, whereas the hydrocarbon liquid an ...


10
James B MacArthur, Joseph B McLean, Alfred G Comolli: Catalytic two-stage coal hydrogenation and hydroconversion process. HRI, Fred A Wilson, June 27, 1989: US04842719 (16 worldwide citation)

A process for two-stage catalytic hydrogenation and liquefaction of coal to produce increased yields of low-boiling hydrocarbon liquid and gas products. In the process, the particulate coal is slurried with a process-derived liquid solvent and fed at temperature below about 650.degree. F. into a fir ...