Hydrodynamics of a Circulating Fluidized Bed with a Bubbling Bed Section Separated by an Inner Rim Baffle.
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- Lei Hongwei
- Department of Chemical Engineering, Tokyo University of Agriculture and Technology
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- Tsujii Kazushige
- Department of Chemical Engineering, Tokyo University of Agriculture and Technology
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- Ito Munechika
- Department of Chemical Engineering, Tokyo University of Agriculture and Technology
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- Horio Masayuki
- Department of Chemical Engineering, Tokyo University of Agriculture and Technology
書誌事項
- タイトル別名
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- Hydrodynamics of a Circulating Fluidize
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The hydrodynamics of a circulating fluidized bed with a bubbling bed section separated by an inner rim baffle are examined both by experiment and mathematical analysis. To maintain sufficient solids holdup in the upper section, the inner rim baffle was set up in the middle of the riser. It is found that the solids holdup in the section above the baffle is greatly increased. Investigation into the baffle dimensions shows that the variation of the baffle clearance has little effect on the solids holdup in the upper section when the clearance is greater than a certain value, whereas the variation of the baffle height has a significant effect on the solids holdup in the upper section, i.e. the lower the baffle height, the higher solids holdup. A hydrodynamic model is developed based on the mass balance and the pressure balance of the solids circulation loop. With respect to gas-solids flow behavior in the upper section, the clustering suspension and the core-annulus flow are taken into account; for the lower section, a bubbling fluidized bed model is included. By comparing the calculated results with the experimental ones, the model is found to predict fairly well the gas-solids flow behavior of the compact bubbling-circulating fluidized bed.
収録刊行物
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- JOURNAL OF CHEMICAL ENGINEERING OF JAPAN
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JOURNAL OF CHEMICAL ENGINEERING OF JAPAN 31 (5), 714-721, 1998
公益社団法人 化学工学会
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詳細情報 詳細情報について
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- CRID
- 1390001204564958080
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- NII論文ID
- 10002066254
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- NII書誌ID
- AA00709658
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- COI
- 1:CAS:528:DyaK1cXntFWqsLo%3D
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- ISSN
- 18811299
- 00219592
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- NDL書誌ID
- 4588676
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
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