1
Ajay M Madgavkar, Harold E Swift: Substoichiometric combustion of low heating value gases. Gulf Research & Development Company, Deane E Keith, Forrest D Stine, Donald L Rose, May 3, 1983: US04381641 (258 worldwide citation)

The combustible component of a gas stream of low heating value is combusted using less than a stoichiometric amount of oxygen under conditions for the suppression of carbon monoxide including the presence of an oxidation catalyst and a small amount of arsine, and the heat energy in the combusted gas ...


2
Ajay M Madgavkar, Roger F Vogel, Harold E Swift: Substoichiometric combustion of low heating value gases. Gulf Research & Development Company, Deane E Keith, Forrest D Stine, Donald L Rose, January 4, 1983: US04366668 (242 worldwide citation)

The combustible component of a stream of low heating value gas comprising carbon monoxide, hydrogen and methane is combusted using less than a stoichiometric amount of air in the presence of an oxygenation catalyst and the heat energy in the combusted gas is utilized, for example, by expansion in a ...


3
Ajay M Madgavkar, Roger F Vogel, Harold E Swift: Utilization of energy obtained by substoichiometric combustion of low heating value gases. Gulf Research & Development Company, Deane E Keith, Forrest D Stine, Donald L Rose, November 10, 1981: US04299086 (240 worldwide citation)

The combustible component of a gas stream of low heating value is combusted using less than a stoichiometric amount of oxygen in the presence of an oxygenation catalyst and the heat energy in the combusted gas is utilized, for example, by expansion in a gas turbine.


4
Ajay M Madgavkar, Roger F Vogel: Substoichiometric combustion of low heating value gases. Gulf Research & Development Company, Deane E Keith, Forrest D Stine, Donald L Rose, December 14, 1982: US04363361 (237 worldwide citation)

The combustible component of a gas stream of low heating value is combusted using less than a stoichiometric amount of oxygen with minor production of carbon monoxide due to the use of an oxygenation catalyst comprising at least three metals in a perovskite-type crystal structure. This combusted gas ...


5
Roger F Vogel, Ajay M Madgavkar, Harold E Swift: In situ combustion process for the recovery of liquid carbonaceous fuels from subterranean formations. Gulf Research & Development Company, Deane E Keith, Forrest D Stine, Donald L Rose, June 16, 1981: US04273188 (232 worldwide citation)

An integrated in situ combustion process for recovering subterranean liquid and solid carbonaceous deposits in which the resulting flue gas of low heating value is combusted at substoichiometric conditions over two different oxidation catalysts in two combustion zones in series and is expanded in a ...


6
Ajay M Madgavkar, Harold E Swift: Substoichiometric combustion of low heating value gases using different platinum catalysts. Gulf Research & Development Company, Deane E Keith, Forrest D Stine, Donald L Rose, March 29, 1983: US04378048 (229 worldwide citation)

Low heating value gases are combusted substoichiometrically in two combustion zones in series in contact with two different supported platinum catalysts in which the concentration of platinum in the catalyst in the first zone is higher than the concentration of platinum in the second catalyst. The c ...


7
Shirley C Tsai, Richard H Graham, Robin R Oder: Underground gasification of bituminous coal. Gulf Research & Development Company, Deane E Keith, Forrest D Stine, Donald L Rose, November 10, 1981: US04299285 (227 worldwide citation)

In the underground gasification of a swelling coal the high gas-flow link between the injection and the production wells is produced by introducing hot air into the injection well at a pressure sufficient to fracture the coal. The bulk permeability of the coal proximate to the link is increased and ...


8
Jaime Lopez, Joel D McKinney, Eugene A Pasek: Heavy oil hydroprocessing. Gulf Research & Development Company, Deane E Keith, Forrest D Stine, December 10, 1985: US04557821 (88 worldwide citation)

Heavy or refractory oils are hydroprocessed in the presence of added water and added hydrogen sulfide with or without a slurry catalyst comprising molybdenum sulfide. The water and hydrogen sulfide may originate from the catalyst preparation procedure.


9
John Freel, John C Montagna, Seh M Ryu: Multistage clean-up of product gas from underground coal gasification. Gulf Research & Development Company, Deane E Keith, Forrest D Stine, Richard C Gaffney, December 1, 1981: US04303127 (74 worldwide citation)

The present invention provides a multistage process for the removal of tar, water and particulate contaminants from a hot product gas resulting from the in-situ gasification of an underground coal deposit, which comprises passing the hot product gas through a first heat exchange zone in indirect hea ...


10
Dennis C Kowalczyk, Bruce A Bricklemyer, Joseph J Svoboda: Process for removing polymer-forming impurities from naphtha fraction. The Pittsburg & Midway Coal Mining Co, Deane E Keith, Forrest D Stine, December 27, 1983: US04422927 (50 worldwide citation)

Polymer precursor materials are vaporized without polymerization or are removed from a raw naphtha fraction by passing the raw naphtha to a vaporization zone (24) and vaporizing the naphtha in the presence of a wash oil while stripping with hot hydrogen to prevent polymer deposits in the equipment.