The measurement of gas residence time distribution in a pressurized fluidized-bed combustor using 41Ar as radiotracer

Applying 41Ar as tracer the residence time distributions of gas in a pressurized fluidized-bed combustor operating at up to 8.4 bar and 980°C have been measured. The tracer amount necessary for a measurement was estimated using a triangle approximation of the mentioned distribution. Good reproducibi...

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Bibliographic Details
Published inInternational journal of radiation applications and instrumentation. Part A, Applied radiation and isotopes Vol. 38; no. 2; pp. 117 - 122
Main Authors Kolar, Z., Thyn, J., Martens, W., Boelens, G., Korving, A.
Format Journal Article
LanguageEnglish
Published Elsevier B.V 1987
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Summary:Applying 41Ar as tracer the residence time distributions of gas in a pressurized fluidized-bed combustor operating at up to 8.4 bar and 980°C have been measured. The tracer amount necessary for a measurement was estimated using a triangle approximation of the mentioned distribution. Good reproducibility was obtained for mean residence time t ̄ and somewhat less good for the variance of the residence time distribution [ σ 2( θ)]. Both t ̄ and 1 σ 2(θ) decreased with increasing pressure and bed content. At 8 bar the behaviour of the combustor approaches that of a perfect mixer.
ISSN:0883-2889
DOI:10.1016/0883-2889(87)90006-2