Journal
ENVIRONMENTAL PROGRESS & SUSTAINABLE ENERGY
Volume 29, Issue 2, Pages 142-150Publisher
JOHN WILEY & SONS INC
DOI: 10.1002/ep.10419
Keywords
Fwood; thermochemical; bio-fuel; hydrodeoxygenation; hydroprocessing
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Funding
- United States Department of Energy, Office of the Biomass Program
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Fast pyrolysis produces a liquid product that represents similar to 70% of the mass of the starling material. However; since the raw oil is highly corrosive, largely immiscible with hydrocarbons, and only partly volatile, it is unsuitable for use in a conventional petroleum refinery or as a finished fuel. Catalytic hydroprocessing can remove oxygen to make a gasoline- or diesel-like product but the processing costs have not been attractive. Economic analysis suggests that mild hydroprocesslug, leaving 7 wt % oxygen in the pyrolysis oil reduce hydrotreating costs to a range that is more economically viable. If the physical and chemical properties of the mildly hydrotreated products were acceptable, these materials could potentially be available fur coprocessing in a petroleum refinery leveraging the economies of scale and existing refining infrastructure to produce a lower-cost product. Mildly hydrotreated Pyrolysis oil with low acidity, good miscibility with hydrocarbons, and high volatility was generated in a semibatch laboratory reactor A 0.5-L sample was produced at 360 degrees C, 2500 psig hydrogen, with a hydrogen flow of 0.22 sl/g-oil/h and 10 wt % nickel-molybdenum/Al(2)O(3) catalyst. Yields were 36% light product. (7% oxygen) and 30% liquid residue. This oil will be subjected to further physical and chemical tests to determine the technical feasibility of co-processing in a petroleum. refinery. (C) 2010 American Institute of Chemical Engineers Environ Prog, 29: 142-150, 2010*
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