Chemistry of hydrocarbon compounds – Production of hydrocarbon mixture from refuse or vegetation – From wood
Reexamination Certificate
2011-06-21
2011-06-21
Hill, Jr., Robert J (Department: 1774)
Chemistry of hydrocarbon compounds
Production of hydrocarbon mixture from refuse or vegetation
From wood
C044S605000, C044S606000, C585S014000, C585S240000, C585S254000, C585S317000, C585S319000, C585S357000, C585S469000, C585S930000, C585S934000
Reexamination Certificate
active
07964761
ABSTRACT:
Processes for conversion of lignin to liquid products such as bio-fuels and fuel additives are disclosed and described. A process for conversion of a lignin material to bio-fuels can include subjecting the lignin material to a base catalyzed depolymerization reaction to produce a partially depolymerized lignin. The partially depolymerized lignin can then be subjected to a stabilization/partial hydrodeoxygenation reaction to form a partially hydrodeoxygenated product. Following partial hydrodeoxygenation, the partially hydrodeoxygenated product can be reacted in a hydroprocessing step to form a bio-fuel. Each of these reaction steps can be performed in single or multiple steps, depending on the design of the process. The production of an intermediate partially hydrodeoxygenation product and subsequent reaction thereof can significantly reduce or eliminate reactor plugging and catalyst coking. A variety of useful bio-fuels such as fuels, fuel additives, and the like, including gasoline and jet or rocket fuels are describe which can be readily produced from renewable lignin materials in an improved conversion process.
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Miller Jan D.
Zmierczak Wlodzimierz W.
Hill, Jr. Robert J
McCaig Brian
University of Utah Research Foundation
Workman Nydegger
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