Drying Brown Coal in Steam-Heated, Steam-Fluidized beds
作者:
O.E. Potter,
C.J. Beeby,
W.J.N. Fernando,
P. Ho,
期刊:
Drying Technology
(Taylor Available online 1983)
卷期:
Volume 2,
issue 2
页码: 219-234
ISSN:0737-3937
年代: 1983
DOI:10.1080/07373938308959826
出版商: Taylor & Francis Group
关键词: Filter;fluidized beds;heat transfer;MHO;moisture equilibrium;multiple-effect;particulate;pressurized;superheated
数据来源: Taylor
摘要:
Removal of moisture in steam-fluidized, mainly steam-heated, fluidized beds makes possible significant energy savings over conventional forms of large-scale drying. The systems are described and their application to brown coal is reviewed. In this application the use of the system to permit meeting diurnal variation in power-station output, and the use of triple-effect drying to minimise coal usage and to avoid the necessity of recovering in the turbines the energy in the steam from the last dryer are discussed. Moisture-equilibrium of brown coal in superheated steam is reported. To facilitate the rapid adoption of the systems proposed, studies are being made of heat-transfer to dried coal, of moisture equilibrium in pressurized and vacuum systems, and of the use of carrier solids for drying lump materials.
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