Gasification of wood wastes in the RENUGAS process
The Institute of Gas Technology is developing the RENUGAS pressurized fluidized-bed biomass gasification process. The process research unit (PRU), built for this purpose, is 11.5-in. ID and designed for operation at up to 1800/sup 0/F and 515 psia. It is capable of handling biomass feed rates up to 12 tons per day. Adiabatic, pressurized, fluidized-bed steam and oxygen-blown biomass gasification tests were conducted in the process research unit (PRU) to develop process optimization information for the production of medium-Btu gas. The test program has investigated the effect on gasification performance of temperature, pressure, biomass throughput rate, steam-to-biomass ratio, type of feedstock, feedstock moisture, and fluidized-bed height. Long-duration gasification tests (up to 3 days of steady-state operation) were made to establish material and energy balances, to observe the possible breakthrough of low-concentration organic compounds, and to evaluate the mechanical performance of the system. Test results indicate that the process, which has proven to be simple to operate, can achieve carbon conversions of about 95% with thermal efficiencies of about 75% and with low oil and tar production. New information on the oil and tar fraction production outline the effect of process operating conditions and feedstock type. Different feedstocks of very similar elemental compositions have produced similar product gas compositions but have produced different distributions and character of the oil and tar fractions. This information is important environmentally and impacts upon the scope and duty of process cleanup equipment. 2 refs., 10 figs., 5 tabs.
- Research Organization:
- Institute of Gas Technology, Chicago, IL (USA)
- DOE Contract Number:
- AC02-80CS83004
- OSTI ID:
- 6882973
- Report Number(s):
- CONF-8604218-4; ON: DE87003957
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
090122* -- Hydrocarbon Fuels-- Preparation from Wastes or Biomass-- (1976-1989)
090600 -- Gaseous Waste Fuels-- (-1989)
10 SYNTHETIC FUELS
CHEMICAL COMPOSITION
FLUIDIZED BEDS
FLUIDS
FUNCTIONAL MODELS
GASES
GASIFICATION
MAPLES
OPTIMIZATION
PERFORMANCE TESTING
PLANTS
PROCESS DEVELOPMENT UNITS
SOLID WASTES
SYNTHESIS GAS
TEMPERATURE DEPENDENCE
TESTING
THERMOCHEMICAL PROCESSES
TREES
WASTES
WOOD WASTES
YIELDS