Individual impeller flooding in aerated vessel stirred by multiple-Rushton impellers
Individual impeller flooding in aerated vessel stirred by multiple-Rushton impellers
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DOI：
10.1016/j.cej.2005.10.009
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发表时间：
2006-02-15
影响因子：
15.1
通讯作者：
Zun, I
中科院分区：
文献类型：
--
作者：
Bombac, A;Zun, I
本文介绍了在装有多涡轮叶轮的搅拌容器中，空气分散到水中的泛液检测。所有实验均在使用单、双和三Rushton涡轮机叶轮的中试尺寸混合容器中进行。使用去离子水和压缩空气作为工作流体。应用基于电阻率探头响应的液泛识别方法，将叶轮液泛定义为叶轮叶片后出现凹凸不平的空穴。将泛水状态划分为一个简单的广义流图，给出了叶轮泛水的顺序：从最低的叶轮泛水随后向上部叶轮扩散。我们的单个叶轮泛水数据与文献中的结果进行了比较，其中显示了单叶轮和部分双、三涡轮机叶轮的数据，由于缺乏已发表的数据，因此只能对最低涡轮机进行比较。(c)2005 Elsevier B.V.保留所有权利。
The paper presents flooding detection in the dispersion of air into water in a stirred vessel equipped with a multiple-turbine impeller. All experiments were performed in a pilot-size mixing vessel using single, dual and triple Rushton turbine impellers. Deionized water and compressed air were used as a working fluid. The flooding recognition method based on resistivity probe response was applied, defining impeller flooding as the appearance of ragged cavities behind the blades of the individual impellers. Classifying the flooding regimes into a simple generalized flow map gave the sequence of impeller flooding: spreading from the lowest impeller flooding subsequently to the upper impellers. A comparison of our individual impeller-flooding data with the results found in the literature is shown for single impeller and partially for dual- and triple-turbine impeller, where due to the lack of published data only a comparison for the lowest turbine was possible. (c) 2005 Elsevier B.V. All rights reserved.