Conversion of wood residues to diesel fuel
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 general conversion scheme is shown. The process is capable of accepting a wide variety of feedstocks. Potential products include medium quality gas, normal propanol, paraffinic fuel and/or high octane gasoline. A flow diagram of the continuous laboratory unit is shown. A fluidized bed pyrolysis system is used for gasification. Capacity is about 10 lbs/h of feedstock. 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. If a high octane gasoline is desired, the paraffinic fuel is passed through a conventional catalytic reformer. The normal propanol could be used as a fuel extender if blended with the hydrocarbon fuel products. Off gases from the downstream reactors are of high quality due to the accumulation of low molecular weight paraffins.
- Research Organization:
- Arizona State Univ., Tempe (USA). Coll. of Engineering and Applied Sciences
- DOE Contract Number:
- AS02-76CS40202
- OSTI ID:
- 6826667
- Report Number(s):
- COO-2982-67; CONF-810237-1
- Resource Relation:
- Conference: 4. annual wood energy program and contractor review meeting, Washington, DC, USA, 9 Feb 1981
- Country of Publication:
- United States
- Language:
- English
Similar Records
Conversion of cellulosic wastes to liquid hydrocarbon fuels: Vol. 1, Project overview: Final report
Indirect thermal liquefaction process for producing liquid fuels from biomass
Related Subjects
29 ENERGY PLANNING
POLICY AND ECONOMY
BIOMASS
GASIFICATION
LIQUEFACTION
WOOD WASTES
ALKANES
BOILING POINTS
CALORIFIC VALUE
CATALYTIC REFORMING
CHEMICAL COMPOSITION
CHEMICAL REACTORS
DENSITY
EXPERIMENTAL DATA
FISCHER-TROPSCH SYNTHESIS
FLUIDIZED BED
FUEL OILS
GASOLINE
PHYSICAL PROPERTIES
PROPANOLS
PYROLYSIS
PYROLYTIC GASES
YIELDS
ALCOHOLS
CHEMICAL REACTIONS
COMBUSTION PROPERTIES
DATA
DECOMPOSITION
ENERGY SOURCES
FLUIDS
FUELS
GASES
HYDROCARBONS
HYDROXY COMPOUNDS
INFORMATION
LIQUID FUELS
NUMERICAL DATA
OILS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
PETROLEUM PRODUCTS
PYROLYSIS PRODUCTS
REFORMER PROCESSES
RENEWABLE ENERGY SOURCES
SOLID WASTES
THERMOCHEMICAL PROCESSES
THERMODYNAMIC PROPERTIES
TRANSITION TEMPERATURE
WASTES
140504* - Solar Energy Conversion- Biomass Production & Conversion- (-1989)
090122 - Hydrocarbon Fuels- Preparation from Wastes or Biomass- (1976-1989)
299003 - Energy Planning & Policy- Unconventional Sources & Power Generation- Other- (-1989)
090222 - Alcohol Fuels- Preparation from Wastes or Biomass- (1976-1989)