Liquid-Film Mass-Transfer Coefficient in a Column Equipped with Structured Packings
Liquid-Film Mass-Transfer Coefficient in a Column Equipped with Structured Packings
复制标题
配备规整填料的塔中的液膜传质系数
DOI：
10.1021/ie970045h
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发表时间：
1997
期刊：
影响因子：
--
通讯作者：
A. Paglianti
中科院分区：
文献类型：
--
作者：
E. Brunazzi;A. Paglianti
对结构填料柱的有效传质效率进行了实验研究。在本工作中分析的包装是Sulzer Mellapak 250Y，由波纹塑料或金属板制成，Sulzer BX由塑料纱布制成。在文献中已经发表了许多关于这一主题的作品，但它们主要是面向评估总体传质效率或气侧系数，而没有对液侧传质系数进行更深入的研究。本工作的目的是检查液膜，并确定一种关系，允许准确地评估液膜对整体传质效率的贡献。实验结果表明，在常规工业规模的液气流速下，塔填料高度影响液侧传质系数。该结果与稳定液流的理论分析一致。
The effective mass-transfer efficiency in a column equipped with structured packings was investigated experimentally. The packings analyzed in the present work were Sulzer Mellapak 250Y, made of corrugated plastic or metal sheets, and Sulzer BX, made of plastic gauze. In the literature many works have been published on this topic, but they have mainly been oriented toward evaluating overall mass-transfer efficiency or the gas-side coefficient, leaving out closer examination of the liquid-side mass-transfer coefficient. The aim of the present work is to examine liquid film and to identify a relation that allows accurately evaluating the liquid film contribution to overall mass-transfer efficiency. Experimental results showed that column packing height affects the liquid-side mass-transfer coefficient at the usual industrial-scale liquid and gas flow rates. This result agrees with theoretical analysis on stable liquid rivulet flow.