Mass transfer in a short wetted-wall column. 1. Pure components

被引：12

作者：

Crause, JC ^{[1
]}

Nieuwoudt, I ^{[1
]}

机构：

[1] Univ Stellenbosch, Dept Chem Engn, Inst Thermal Separat, ZA-7600 Stellenbosch, South Africa

来源：

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH | 1999年 / 38卷 / 12期

关键词：

D O I：

10.1021/ie990029f

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

It is believed that mass transfer in modern structured packing is not analogous to mass transfer in long wetted-wall columns used previously in mass-transfer studies. To model mass transfer in structured packing, gas-phase mass-transfer coefficients were measured by evaporation in a short wetted-wall column with a length of 110 mm and a diameter of 25.4 mm. The results were correlated as Sh(g) = 0.00283Re(g)(0.5)Re(1)(0.08). This correlation is based on the evaporation data of six low-viscosity pure liquids covering a wide range of surface tensions. In the case of a high-viscosity Liquid such as ethylene glycol, systematic deviation from this correlation was observed.

引用

页码：4928 / 4932

页数：5