Characteristics of Particle Flow Behavior in a Cold Model of Novel Burner with Circulating Fluidized Bed

To improve the performance of radiant-tube burners, which are widely used for indirect heating in industrial furnaces, we have devised a new radiant-tube burner that will improve the thermal efficiency and make the radiant tube surface temperature uniform by circulating the heat-resisting particles...

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Bibliographic Details
Published inKAGAKU KOGAKU RONBUNSHU Vol. 19; no. 2; pp. 141 - 147
Main Authors Mizutani, Takaaki, Nakamura, Yasuhisa, Uchida, Akinori, Matsuda, Hitoki, Hasatani, Masanobu
Format Journal Article
LanguageJapanese
Published Tokyo The Society of Chemical Engineers, Japan 10.03.1993
Kagaku Kōgaku Kyōkai
Subjects
Burner
Circulation
Fluidized Bed
Particle
Pressure Oscillation
Stream
Temperature Uniformity
Visualized Cold Model
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Summary:To improve the performance of radiant-tube burners, which are widely used for indirect heating in industrial furnaces, we have devised a new radiant-tube burner that will improve the thermal efficiency and make the radiant tube surface temperature uniform by circulating the heat-resisting particles within the burner. In this study, we investigated the particle flow behavior in the burner tube and the operating condition of fluidization by using a three-dimensional visualized coldmodel apparatus. Our research we found the following points regarding development of the combustor : (1) The circulating fluidized flow and the range of circulating fluidized flow depend strongly on particle bed height and particle diameter. (2) The pressure in the combustion tube is approximately 12kPa and the pressure oscillation is around 3.5kPa for the state of circulating fluidization.
ISSN:0386-216X
1349-9203
DOI:10.1252/kakoronbunshu.19.141