Devolatilization and char burning of coal particles in a fluidized bed combustor
作者:
Lufei Jia,
H. A. Becker,
R. K. Code,
期刊:
The Canadian Journal of Chemical Engineering
(WILEY Available online 1993)
卷期:
Volume 71,
issue 1
页码: 10-19
ISSN:0008-4034
年代: 1993
DOI:10.1002/cjce.5450710103
出版商: Wiley Subscription Services, Inc., A Wiley Company
关键词: coal combustion;coal devolatilization;char combustion;fluidized‐bed combustion
数据来源: WILEY
摘要:
AbstractDevolatilization and char burning were studied in an electrically heated bench‐scale fluidized‐bed reactor at 750 to 900°C bed temperature, gas oxygen mole fractions ranging from zero to 0.21, superficial gas velocities from 0.3 to 0.7 m/s and coal particle diameters 5 to 35 mm. The coals investigated include lignite, bituminous and anthracite. The coal devolatilization and char burning times, H/C ratio histories, and particle fragmentation were measured. Statistical correlations with the operating variables were developed for the devolatilization time. A mathematical model is given for the combustion of char. Most predictions of the model agree quite well with the experimental res
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