Internally heated steam fluidized-bed wood gasifier
The paper discusses a direct-fired gasifier system producing medium Btu gas using wood as the feed material. The reactor design is based on the concept of a fired-tube boiler turned on its end. A fluidized bed, replacing the boiler water, is heated by the propane fired tubes. A pilot 10I.D.(25.4 cm) reactor is currently being tested. The design includes a central 4I. D.(10.2 cm) fire tube and uses steam as the fluidizing agent. The feed rates are in the 415 kg/hr range, using sawdust of less than 10% moisture content. The fluidizing steam is superheated to approximately 300 degree C and bed temperatures are in the 600-750 degree C range. The gas produced has a 11 + MJ heating value and typically contains 33% H/sub 2/ and 26% CO. The carbon conversion is estimated to be greater than 80%. The operation of the 10 system has proven to be straightforward and uncomplicated. The direct-fired principle appears to provide an excellent opportunity for producing synthetic gas for methanol and/or other uses.
- Research Organization:
- Univ. of Missouri-Rolla, Rolla
- OSTI ID:
- 6384283
- Journal Information:
- Am. Soc. Mech. Eng., (Pap.); (United States), Journal Name: Am. Soc. Mech. Eng., (Pap.); (United States) Vol. 83-PET-32; ISSN ASMSA
- Country of Publication:
- United States
- Language:
- English
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ALCOHOLS
ALKANES
BOILERS
CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CHALCOGENIDES
CHEMICAL REACTIONS
COMBUSTION
DESIGN
ELEMENTS
FLUIDIZED BED
FLUIDS
FUEL GAS
FUELS
GAS FUELS
GAS GENERATORS
GASES
GASIFICATION
HYDROCARBONS
HYDROGEN
HYDROXY COMPOUNDS
INTERMEDIATE BTU GAS
METHANOL
NONMETALS
ORGANIC COMPOUNDS
OXIDATION
OXIDES
OXYGEN COMPOUNDS
PRODUCTION
PROPANE
SOLID WASTES
SYNTHESIS
SYNTHESIS GAS
THERMOCHEMICAL PROCESSES
USES
WASTES
WOOD
WOOD WASTES