| 鼓泡床、湍动床固含率的相似分布规律 |
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| 引用本文： | 汪智国,魏飞. 鼓泡床、湍动床固含率的相似分布规律[J]. 石油化工, 1999, 28(2): 3 |
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| 作者姓名： | 汪智国 魏飞 |
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| 作者单位： | 清华大学化工系,北京,100084 |
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| 摘 要： | 在内径为４７４ｍｍ的流化床中，采用双光路光纤密度探头分别研究了流化床密相区、稀相区空隙率径向分布，发现无论是在密相区还是在稀相区，鼓泡床、湍动床中的固含率径向分布均比提升管均匀得多。鼓泡床、湍动床中的固含率径向分布符合相似分布规律，即局部固含率与截面平均固含率成正比，仅是径向位置的函数，与操作气速无直接关系。
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| 关 键 词： | 鼓泡床 湍动流化床 固含率 双光路光纤密度探头 密相区 稀相区 空隙率 径向分布 |
| 修稿时间： | 1998-04-20 |
Similarity in Radial Profiles of Solids Fraction in Bubbling and Turbulent Fluidized Bed |
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| WANG Zhi-guo,WEI Fei. Similarity in Radial Profiles of Solids Fraction in Bubbling and Turbulent Fluidized Bed[J]. Petrochemical Technology, 1999, 28(2): 3 |
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| Authors: | WANG Zhi-guo WEI Fei |
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| Abstract: | The radial profiles of solids fraction in the dilute phase and dense phase of fluidized bed was studied by a dual beams optical fiber density sensor in a 474mm ID pilot scale fluidized bed.Similarity in radial profiles of solids fraction exists in both dilute and dense phase of the bed,that is,local solids fraction is proportional to average solids fraction,and is a function of radial position,having no direct relation with gas velocity. |
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| Keywords: | bubbling bed turbulent fluidized bed solids fraction dual beams optical fiber density sensor dense phase dilute phase solids fraction radial profiles |
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