Conversion of cellulosic wastes to liquid fuels
The current status and future plans for a project to convert waste cellulosic (biomass) materials to quality liquid hydrocarbon fuels is described. The basic approach is indirect liquefaction, i.e., thermal gasification followed by catalytic liquefaction. The indirect approach results in separation of the oxygen in the biomass feedstock, i.e., oxygenated compounds do not appear in the liquid hydrocarbon fuel product. The process is capable of accepting a wide variety of feedstocks. Potential products include medium quality gas, normal propanol, diesel fuel and/or high octane gasoline. A fluidized bed pyrolysis system is used for gasification. The pyrolyzer can be fluidized with recycle pyrolysis gas, steam or recycle liquefaction system off gas or some combination thereof. Tars are removed in a wet scrubber. Unseparated pyrolysis gases are utilized as feed to a modified Fischer-Tropsch reactor. The liquid condensate from the reactor consists of a normal propanol-water phase and a paraffinic hydrocarbon phase. The reactor can be operated to optimize for either product. The following tasks were specified in the statement of work for the contract period: (1) feedstock studies; (2) gasification system optimization; (3) waste stream characterization; and (4) liquid fuels synthesis. In addition, several equipment improvements were implemented.
- Research Organization:
- Arizona State Univ., Tempe (USA). Coll. of Engineering and Applied Sciences
- DOE Contract Number:
- AS02-76CS40202
- OSTI ID:
- 7067543
- Report Number(s):
- COO-2982-57
- Country of Publication:
- United States
- Language:
- English
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Conversion of cellulosic wastes to liquid fuels
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AGRICULTURAL WASTES
ALCOHOLS
BAGASSE
BIOMASS
CARBOHYDRATES
CATALYSIS
CELLULOSE
CHEMICAL COMPOSITION
CHEMICAL REACTIONS
DECOMPOSITION
DIESEL FUELS
ENERGY SOURCES
FISCHER-TROPSCH SYNTHESIS
FLUIDIZED BED
FLUIDS
FUEL GAS
FUELS
GAS FUELS
GASES
GASIFICATION
GASOLINE
HYDROXY COMPOUNDS
INTERMEDIATE BTU GAS
LIQUEFACTION
LIQUID FUELS
LIQUID WASTES
OPTIMIZATION
ORGANIC COMPOUNDS
ORGANIC WASTES
PETROLEUM PRODUCTS
POLYSACCHARIDES
PRODUCTION
PROPANOLS
PYROLYSIS
RENEWABLE ENERGY SOURCES
SACCHARIDES
SOLID WASTES
SYNTHESIS
SYNTHETIC FUELS
SYNTHETIC PETROLEUM
THERMOCHEMICAL PROCESSES
WASTES
WOOD WASTES