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| 金属波纹板规整填料塔中液体有效流速 | |
| 引用本文： | 孙树瑜 王树楹. 金属波纹板规整填料塔中液体有效流速[J]. 化工学报, 1997, 48(6): 736-739 |
| 作者姓名： | 孙树瑜 王树楹 |
| 作者单位： | 天津大学化学工程研究所!天津300072,天津大学化学工程研究所!天津300072,天津大学化学工程研究所!天津300072 |
| 基金项目： | 国家自然科学基金资助项目（No.29676029） |
| 摘 要： | <正>填料塔以压降小、通量大、持液量小、分离效率高等优点广泛应用于精馏和吸收等单元操作中。填料塔中液体的流体力学行为对精馏等传质过程有重要影响,而液体在填料塔中的有效流速是液体流体力学行为的重要参数。例如描述填料塔中液相返混通常用一维或二维扩散模型,其中的有效流速就是重要的方程参数;要精确描述填料塔中相界面的传质行为,液相的真实流速也是关键性的参数。目前一般采用Bravo提出的公式来计算规整填料塔内液体的有效速度 |
| 关 键 词： | 填料塔 波纹板填料 液体有效流速 |
LIQUID EFFECTIVE VELOCITY IN A COLUMN CONTAINING CORRUGATED METAL SHEET PACKING |
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| Sun Shuyu,Wang Shuying and Yu Guocong. LIQUID EFFECTIVE VELOCITY IN A COLUMN CONTAINING CORRUGATED METAL SHEET PACKING[J]. Journal of Chemical Industry and Engineering(China), 1997, 48(6): 736-739 | |
| Authors: | Sun Shuyu Wang Shuying Yu Guocong |
| Abstract: | The residence time distribution in a packed column containing Mellapak 250Y and Mellapak 350Y was measured by pulse tracer technique, and the liquid effective velocity was evaluated by optimization method. It was found that the liquid effective velocity is proportional to the cubic root of liquid flow rate. Two dimensionless numbers, Nv and Nw, were proposed to represent respectively the liquid effective velocity and the liquid flow rate. The experimental data were correlated satisfactorily by a dimensionless equation involving No and Nw. Comparison was made between the experimental data and the calculated results by the proposed equation, Bravo's method and the method from falling film theory. |
| Keywords: | packed column corrugated sheet packing liquid effective velocity diraensionless correlation |
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