Title
Studies of carbonaceous cenospheres from fluidised-bed combustors
Author
Gay, A.J.
Littlejohn, R.F.
van Duin, P.J.
Hoofdgroep Maatschappelijke Technologie Centraal Laboratorium TNO
Publication year
1984
Abstract
FIy ash from fluidised bed combustion of bituminous coals contains carbonaceous cenospheres of several forms including thick-walled opaque, transparent with a skeletal structure and 'balloons' without skeletons. The influence on cenosphere formation of particle size, temperature, heating rate, petrographic composition, etc. is reviewed. The probability of cenospheres surviving beyond the combustion zone under typical FBC conditions is estimated. Particles from experimental and industrial scale combustors were examined. Differences in chemical composition within single cenospheres were demonstrated and concentrations of major-, trace-elements and PAHs were measured. The possible significance of cenospheres in the environment is discussed.
Subject
Carbon
Coal
Combustion
Fluidized bed
Fly ash
Particulate matter
Theoretical study
Cenosphere formation
Air pollution
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http://resolver.tudelft.nl/uuid:8455863e-f226-4df3-8f55-f3d2e49f4f76
TNO identifier
229606
Publisher
Elsevier, Amsterdam
ISSN
0048-9697
Source
Science of the Total Environment, 36, 239-246
Document type
article