1
Stephen K Liu: Method of producing hydrogen from heavy crude oil using solvent deasphalting and partial oxidation methods. Atlantic Richfield Company, F Lindsey Scott, September 28, 1999: US05958365 (78 worldwide citation)

Heavy crude oil is recovered and processed at a refinery through (a) a distillation zone(s), (b) a solvent deasphalting unit (c ) a high pressure air partial oxidation gasifier to produce a CO-rich gas mixture including hydrogen, (d) a shift reactor and (e) a purification step to produce 99.9% pure ...


2
Noam White: Production of fuels, particularly jet and diesel fuels, and constituents thereof. The Broken Hill Proprietary Company, Murray and Whisenhunt, February 24, 1987: US04645585 (63 worldwide citation)

A first aspect of the invention is concerned with fuels and particularly jet and diesel fuels which comprise blends of substituted mono cyclohexane material and two ring non-fused cyloalkane material. The first material may be n-propylcyclohexane or n-butylcyclohexane. The second material may be nuc ...


3
Russell J Diefendorf, Dennis M Riggs: Forming optically anisotropic pitches. Exxon Research & Engineering Co, Joseph J Dvorak, June 17, 1980: US04208267 (63 worldwide citation)

An improved process for preparing liquid-crystal containing pitches comprises extracting carbonaceous isotropic pitches with an organic solvent system to provide a solvent insoluble fraction which when heated for 10 minutes or less and to temperatures in the range of about 230.degree. C. to 400.degr ...


4
Edgar Ronald McHenry: Process for producing mesophase pitch. Union Carbide Corporation, John S Piscitello, May 31, 1977: US04026788 (54 worldwide citation)

An improved process for producing carbon fibers from pitch which has been transformed, in part, to a liquid crystal or so-called "mesophase" state. According to the process, pitch of a given mesophase content, suitable for producing carbon fibers, is produced in substantially shorter periods of time ...


5
Derek J Angier, Harry W Barnum: Neomesophase formation. Exxon Research & Engineering Co, Joseph J Dvorak, January 22, 1980: US04184942 (53 worldwide citation)

A process for increasing that fraction of an isotropic carbonaceous pitch which is capable of being thermally converted to an optically anisotropic carbonaceous pitch having less than 25 wt. % quinoline insolubles is described. Basically, the pitch is heated at elevated temperatures until spherules ...


6
William E Shelfantook, Alexander W Hyndman, Larry P Hackman: Purification process for bitumen froth. Millen White & Zelano, August 22, 1989: US04859317 (50 worldwide citation)

Bitumen froth is treated in a circuit comprising a plurality of serially connected mixer and inclined plate settler units. A light hydrocarbon diluent moves countercurrently through the circuit. Thus, as the bitumen content of the stream being settled diminishes, the concentration of diluent in that ...


7
David S Winkler: Asphalt, copolymer and elastomer composition. J H Diamond Company, Pollock Vande Sande & Priddy, April 4, 1989: US04818367 (50 worldwide citation)

An asphalt composition containing an asphalt, a copolymer of an olefin with an anhydride or a nitrile, and an unsaturated elastomer having at least two terminal groups each with an active hydrogen, a halogen, an epoxy oxygen or a cyanocarbon. The composition may be prepared by copolymerizing an olef ...


8
Stephen Chwastiak: Low molecular weight mesophase pitch. Union Carbide Corporation, David Fink, June 24, 1980: US04209500 (50 worldwide citation)

A low molecular weight, anisotropic pitch consisting of essentially 100 percent mesophase and suitable for spinning into continuous filaments can be prepared by passing an inert gas through an isotropic carbonaceous pitch at a rate of at least 4.0 scfh. per pound of pitch while heating the pitch at ...


9
Paul S Wallace, Kay A Johnson, Pradeep S Thacker, Janice L Kasbaum, R Walter Barkley, Jacquelyn Gayle Niccum: Integration of solvent deasphalting and gasification. Texaco, Morris N Reinisch, Howrey Simon Arnold & White, June 5, 2001: US06241874 (48 worldwide citation)

The invention is the integration of a process of gasifying asphaltenes in a gasification zone by partial oxidation and the process of asphaltene extraction with a solvent. The integration allows low level heat from the gasification reaction to be utilized in the recovery of solvent that was used to ...


10
Senolt Hans, Tomaschko Heinrich, Palvik Georg: Bitumen blasting process and apparatus therefor. Osterreichische Mineralolverwaltung Aktiengesellschaft, March 28, 1972: US3652445 (46 worldwide citation)

Soft asphalt is hardened by passing a stream of air into and through the asphalt in a molten state. The air stream forms air bubbles which rise through the asphalt. The air bubbles are forcibly coalesced into air sacs and the air sacs are redispersed into air bubbles. The air bubbles may be coalesce ...



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