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U.S. Department of Energy
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Effect of temperature, sample size and gas flow rate on drying of Beulah-Zap lignite and Wyodak subbituminous coal

Conference ·
OSTI ID:10136936

Beulah-Zap lignite and Wyodak-Anderson ({minus}100 and {minus}20 mesh from the Argonne Premium Coal Sample Program) were dried in nitrogen under various conditions of temperature (20--80{degree}C), gas flow rates (20--160 cc/min), and sample sizes (20--160 mg). An equation relating the initial drying rate in the unimolecular mechanism was developed to relate the drying rate and these three variables over the initial 80--85% of the moisture loss for the lignite. The behavior of the Wyodak-Anderson subbituminous coal is very similar to that of the lignite. The nitrogen BET surface area of the subbituminous sample is much larger than the lignite.

Research Organization:
Argonne National Lab., IL (United States)
Sponsoring Organization:
USDOE, Washington, DC (United States)
DOE Contract Number:
W-31109-ENG-38
OSTI ID:
10136936
Report Number(s):
ANL/CHM/CP--78106; CONF-930304--9; ON: DE93008663
Country of Publication:
United States
Language:
English