Effect of Moisture Profile and Noncombustible Matter in Recycled Paper-Mill Sludge on Energy Recovery
作者:
F. BROUILLETTE,
M. SAIN,
C. DANEAULT,
期刊:
Combustion Science and Technology
(Taylor Available online 1998)
卷期:
Volume 139,
issue 1
页码: 191-206
ISSN:0010-2202
年代: 1998
DOI:10.1080/00102209808952087
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
Calorific values of solid sludge obtained from paper recycling mill rejects were estimated by first drying the sludge in a pilot scale rotary dryer and then determining the heal of combustion of these sludge samples. Sludge samples with varying moisture and inorganic contents were studied. Study revealed that a net thermal energy saving was possible by optimizing final moisture content of sludge before combustion. Sludge containing high amount of inorganic components needs to be dried to a final moisture content sufficient enough to ensure a net energy saving after drying and combustion. Thus, high inorganic containing sludge samples from a fine paper recycling mill generated significantly less energy compared to that of a deinking mill sludge which was more rich in fiber content. Although the presence of inorganic components, decomposable fillers in particular, and moisture in sludge negatively influenced the energy recovery, a net gain in the thermal energy was obtainable from all the three studied sludge compositions by optimizing the residual moisture content during drying of the wet sludge.
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