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首页> 外文期刊>Chemical Engineering Science >GAMMA-DENSITOMETRY TOMOGRAPHY OF GAS HOLDUP SPATIAL DISTRIBUTION IN INDUSTRIAL SCALE BUBBLE COLUMNS
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GAMMA-DENSITOMETRY TOMOGRAPHY OF GAS HOLDUP SPATIAL DISTRIBUTION IN INDUSTRIAL SCALE BUBBLE COLUMNS

机译：工业规模气泡柱中气体滞留空间分布的伽马密度计层析成像

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Gamma-densitometry tomography (GDT) experiments have been performed to measure gas holdup spatial variations in two bubble columns: a 0.19 m inside diameter Lucite column and a 0.48 m inside diameter stainless steel vessel. Two-phase air/water flows were examined. Horizontal scans at one vertical position in each column were made for several air flow rates. An axisymmetric tomographic reconstruction algorithm based on the Abel transform has been used to calculate the time-averaged gas holdup radial variation. Integration of these profiles over the column cross section has yielded area-averaged holdup results, which have been compared with volume-averaged gas holdups determined from differential pressure measurements and from the rise in the air/water interface during gas flow. The results agree reasonably well. [References: 16]
机译：已经进行了伽马密度计断层扫描（GDT）实验，以测量两个气泡柱（内径为0.19 m的Lucite柱和内径为0.48 m的不锈钢容器）中的气体滞留空间变化。检查了两相空气/水流。在每列的一个垂直位置进行水平扫描，以获得几种空气流速。使用基于Abel变换的轴对称层析重建算法来计算时间平均气体滞留量径向变化。这些分布图在色谱柱横截面上的积分产生了面积平均滞留率结果，并将其与由压差测量和气体流动过程中空气/水界面的上升确定的体积平均滞留率进行了比较。结果相当吻合。 [参考：16]

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