The development of a 20-inch indirect fired fluidized bed gasifier
This report discusses the design, fabrication and operation of a 20'' I.D. fluidized bed gasifier producing medium Btu gas. The reactor is indirectly heated using 30 x 1-inch U-tubes inserted in the inert bed. The U-tubes are heated using flue gases produced from a propane burner system located at the bottom of the reactor. The feed material was dry wood chips fed into the bed with a 6in. auger. The reactor was fed both into the bed and at the top of the bed. The fluidizing medium was superheated steam which was superheated to 1000/degree/F. The gas produced from the reactor was passed through a cyclone for char removal and routed to the flare for combustion and disposal. The parameters measured during the experimental runs were wood feed rate, steam flow rate, steam temperatures, bed temperatures, free board temperatures, product gas temperatures, bed differential pressures, char production, gas production, gas analyses, and tar production. The parameters measured in the laboratory were moisture contents (wood and char), ash contents (wood and char), and tar content. 9 refs., 19 figs., 11 tabs.
- Research Organization:
- Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
- DOE Contract Number:
- AC06-76RL01830
- OSTI ID:
- 5134766
- Report Number(s):
- PNL-6520; ON: DE88008462
- Country of Publication:
- United States
- Language:
- English
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The development of a 20-inch indirect fired fluidized bed gasifier
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Related Subjects
42 ENGINEERING
GAS GENERATORS
DESIGN
FABRICATION
SYNTHESIS GAS
PRODUCTION
FLUIDIZED BEDS
TEMPERATURE DEPENDENCE
WOOD
FLUIDS
GASES
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