HOWARD G MCILVRIED
Land Surveyors in Pittsburgh, PA

4322284, Mar 30, 1982

Feb 5, 1980

6/118860

Shirley C. Tsai - Pittsburgh PA
Howard G. McIlvried - Pittsburgh PA

Gulf Research & Development Company - Pittsburgh PA

C10G 108, C10G 106, C10G 4550

208 10

Ash-containing raw coal is converted to a liquid fuel product by contacting the coal with hydrogen and an OHP-enriched solvent containing OHP and THP in a ratio of OHP/THP greater than 0. 4, wherein the OHP is present in an amount of at least 5 weight percent of the solvent, to produce a liquid stream and a coal minerals stream, and recycling at least a portion of the coal minerals stream. A portion of the liquid stream (64) is catalytically hydrogenated (68), preferably with a tungsten-containing catalyst, to increase the ratio of OHP/THP to a value greater than 0. 4 or preferably greater than l. The OHP-enriched liquid stream solvent is passed as solvent to a mixing zone (11) where it is admixed with raw coal (10) and recycled coal minerals (38), admixed with hydrogen (58) and passed to a preheater (20) and dissolver (24). The use of the OHP-enriched solvent improves coal solvation and liquid distillate production, while the recycle of coal minerals assists in maintaining a high OHP level in the circulated process solvent. By increasing the OHP/THP ratio to a value greater than 1, the amount of hydrogen consumed in the process can be significantly reduced.

6173663, Jan 16, 2001

Jun 21, 1999

9/336791

Uthamalingam Balachandran - Hinsdale IL
Arun C. Bose - Pittsburgh PA
Howard G. McIlvried - Pittsburgh PA

The University of Chicago - Chicago IL

F23D 100, F23J 1500, C10C 500

110347

A method of combusting pulverized coal by mixing the pulverized coal and an oxidant gas to provide a pulverized coal-oxidant gas mixture and contacting the pulverized coal-oxidant gas mixture with a flame sufficiently hot to combust the mixture. An oxygen-containing gas is passed in contact with a dense ceramic membrane of metal oxide material having electron conductivity and oxygen ion conductivity that is gas-impervious until the oxygen concentration on one side of the membrane is not less than about 30% by volume. An oxidant gas with an oxygen concentration of not less than about 30% by volume and a CO. sub. 2 concentration of not less than about 30% by volume and pulverized coal is contacted with a flame sufficiently hot to combust the mixture to produce heat and a flue gas. One dense ceramic membrane disclosed is selected from the group consisting of materials having formulae SrCo. sub. 8 Fe. sub. 2 O. sub. x, SrCo. sub. 5 FeO. sub. x and La. sub. 2 Sr. sub. 8 Co. sub. 4 Fe. sub. 6 O. sub. x.

4323447, Apr 6, 1982

Feb 5, 1980

6/118859

Shirley C. Tsai - Pittsburgh PA
Howard G. McIlvried - Pittsburgh PA

Gulf Research & Development Company - Pittsburgh PA

C10G 100, C10G 106

208 8LE

A coal solvation/liquefaction process wherein the coal is contacted with hydrogen and an octahydrophenanthrene-enriched solvent containing OHP and THP in a ratio of OHP/THP greater than 0. 4, wherein the OHP is present in an amount of at least 5 percent by weight based upon the total weight of said solvent. The OHP-enriched solvent provides improved coal solvation and increases the production of distillate liquid (62) in a coal solvation/liquefaction (20, 24) process. The desired ratio of OHP/THP is provided by catalytic hydrogenation (68) of a coal liquid distillate stream (64). By increasing the OHP/THP ratio to a value greater than 1, the amount of hydrogen consumed in the process can be significantly reduced.

4086158, Apr 25, 1978

Sep 24, 1976

5/726146

Howard G. McIlvried - Pittsburgh PA
Angelo A. Montagna - Monroeville PA

Gulf Research & Development Company - Pittsburgh PA

C10G 2302, C10G 2316

208264

A process is provided for the upgrading of solids-containing liquid hydrocarbon oils derived from coal, oil shale and tar sands. The process comprises passing the solids-containing liquid hydrocarbon oil, together with hydrogen, through the void spaces of a fixed catalyst bed wherein the total void volume is within defined critical limits.

4312746, Jan 26, 1982

Feb 5, 1980

6/118762

Shirley C. Tsai - Pittsburgh PA
Howard G. McIlvried - Pittsburgh PA

Gulf Research & Development Company - Pittsburgh PA

C10G 4500, C07C 510

208143

The OHP content of an OHP- and THP-containing solvent is enriched by contacting the solvent with hydrogen in the presence of a supported catalyst comprising Group VIB and Group VIII metals under conditions to increase the OHP/THP ratio in the solvent to a level greater than 0. 4 and preferably greater than 1. The preferred catalyst contains tungsten where it is desired to provide an OHP/THP ratio greater than 1 in the OHP-enriched solvent, and also contains titanium to improve the hydrogen selectivity of the catalyst so as to enhance the preservation of aromatics in the hydrogenated solvent. The OHP-enriched solvent provides increased solvation of coal and improved yields of liquid fuel product in a coal liquefaction process which utilizes the solvent.