High performance (mesophase) carbon fiber feedstock production
AssigneeUop LLC
InventorsJan de Ren, Mark Van Wees, Hans Lefebvre, Steven Chmura
Life of this patent
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Abstract
A process is provided for production of a mesophase material that is capable of producing high performance carbon fibers. The mesophase is produced after heavy hydrocarbons have been treated to remove impurities by hydrotreating or quinoline solvent, followed by use of a toluene solvent to remove light hydrocarbons and then being upgraded by a soaker visbreaking step to produce a desirable amount of mesophase material while preventing formation of coke.
Claims16
A process for producing a hydrocarbon feed for converting into carbon fiber, said process comprising sending a raw unhydrotreated feed to be mixed with a first solvent to remove contaminants and coke that are not soluble in said solvent and wherein hydrocarbons in said raw unhydrotreated feed are soluble in said first solvent and then sending said first solvent containing said hydrocarbons to a second solvent to remove lighter components and producing a stream comprising heavier hydrocarbon components to be sent to a thermal treatment step to increase the molecular weight of said heavier hydrocarbon components to produce a pitch and then converting said pitch to carbon fiber.
A process for producing a hydrocarbon feed for conversion into carbon fiber comprising sending a hydrotreated stream to a vessel containing toluene to produce a stream comprising toluene and impurities removed from said hydrotreated pitch and a solvent insoluble stream;
- and sending said solvent insoluble stream to a thermal treatment step to produce an anisotropic pitch.
A process for producing a hydrocarbon feed for converting into carbon fiber, said process comprising sending a raw unhydrotreated feed to be mixed with a first solvent to remove contaminants and coke that are not soluble in said solvent and wherein hydrocarbons in said raw unhydrotreated feed are soluble in said first solvent and then sending said first solvent containing said hydrocarbons to a second solvent to remove lighter components and producing a stream comprising heavier hydrocarbon components to be converted to carbon fiber.
Dependencies are inferred from the claim text.