| 多溢流大型塔板的计算传质学 |
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| 引用本文： | 赵丹,张雁,高雪颖,刘春江,袁希钢. 多溢流大型塔板的计算传质学[J]. 化工学报, 2011, 62(9): 2427-2432. DOI: 10.3969/j.issn.0438-1157.2011.09.007 |
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| 作者姓名： | 赵丹 张雁 高雪颖 刘春江 袁希钢 |
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| 作者单位： | 1.天津大学化学工程联合国家重点实验室，天津 300072；2天津市天大北洋化工设备有限公司，天津 300072 |
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| 基金项目： | 国家自然科学基金项目(20876105)~~ |
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| 摘 要： | 利用计算传质学方法研究了直径12.6 m的四溢流大型塔板上液相流动结构对塔板效率的影响，建立了描述多溢流塔板上液相流动和传质状况的理论化计算模型。应用该模型，研究了传统等鼓泡面积设计方法条件下单块塔板的速度场和浓度场。结果表明，所模拟四溢流塔板的左侧翼塔板出现返流区，而右侧翼塔板流动结构相对均匀未出现返流区。为进一步优化塔板结构，提高传质效率，对左侧翼塔板提出了加设导流板的改进结构。计算结果表明，改进的塔板结构在一定程度上改善了塔板上液相的流动结构，使得塔板效率较传统设计方法提升了4.53%～9.22%（当Q1/Q2=［0.5,1.5］时）。
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| 关 键 词： | 四溢流塔板 计算传质学 塔板效率 塔板结构优化 |
Computational study for mass transfer on commercial multi-pass trays |
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| ZHAO Dan,ZHANG Yan,GAO Xueying,LIU Chunjiang,YUAN Xigang. Computational study for mass transfer on commercial multi-pass trays[J]. Journal of Chemical Industry and Engineering(China), 2011, 62(9): 2427-2432. DOI: 10.3969/j.issn.0438-1157.2011.09.007 |
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| Authors: | ZHAO Dan ZHANG Yan GAO Xueying LIU Chunjiang YUAN Xigang |
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| Affiliation: | ZHAO Dan1,ZHANG Yan2,GAO Xueying1,LIU Chunjiang1,YUAN Xigang1 (1State Key Laboratory of Chemical Engineering,Tianjin University,Tianjin 300072,China,2Beiyang Chemical Equipment of Tianjin University Co.,Ltd.,China) |
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| Abstract: | A two-dimensional pseudo single phase model is proposed to describe the flow and mass transfer phenomenon on a four-pass distillation tray with a diameter of 12.6 m by combination of computational fluid dynamics(CFD)and computational mass transfer(CMT)equations.The resistance and bubbling effect of the uprising gas phase are considered.The velocity profile and concentration distribution are calculated for the tray designed by traditional equal bubbling area method and for the modified tray under different o... |
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| Keywords: | four-pass distillation tray computational mass transfer tray efficiency tray configuration optimization |
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