Flow pattern, circulation velocity and pressure loss in loop reactor.
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概要
- 論文の詳細を見る
A loop reactor is regarded as a new type of reactor for bulk polymerization of olefins. Several approaches to evaluate its performance are made herein. A simple model of discharge flow is proposed and related with the results obtained by measurement of average circulation velocity. The average circulation velocity is proportional to impeller speed and the sine of the impeller blade angle. It depends upon Reynolds number and dimensions of the impeller. Flow pattern was measured and the influence of baffles and impeller geometry is discussed qualitatively. In the case of unbaffled conditions, fluid flows in a helical motion. Intensity of this motion increases with impeller speed and pitched angle. In the case of baffled conditions, tangential velocity component is suppressed and normalized distribution of axial velocity is independent of impeller geometry. Pressure distribution was measured and pressure loss was obtained. Total pressure loss shows good agreement with the value calculated by superposition of frictional loss in straight parts and bend loss in bends obtained from established correlations.
- 公益社団法人 化学工学会の論文
著者
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Sato Yuji
Department Of Bacteriology National Institute Of Health
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Murakami Yasuhiro
Department of Biology, Graduate School of Natural Science and Technology, Okayama University
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Hirose Tsutomu
Department of Applied Chemistry & Biochemistry, Faculty of Engineering, Kumamoto University
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ICHIKAWA MASATAKA
Department of Chemical Engineering, Kyushu University
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ONO SHINICHI
Department of Chemical Engineering, Kyushu University
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HASHIGUCHI YOSHIYUKI
Department of Chemical Engineering, Kyushu University
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