Enhancement of Gas-to-Water Mass-Transfer Rates by the Second Liquid Phase
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- 作者：Zhigang Zhang ; Wei Chen ; Sansan Yu ; Wenxiu Li
- 刊名：Industrial & Engineering Chemistry Research
- 出版年：2010
- 出版时间：April 7, 2010
- 年：2010
- 卷：49
- 期：7
- 页码：3223-3227
- 全文大小：206K
- 年卷期：v.49,no.7(April 7, 2010)
- ISSN：1520-5045
文摘
Gas−liquid mass-transfer enhancement due to the presence of a second dispersed liquid phase has been discussed in this paper. Both the overall volumetric mass-transfer coefficient from the gas to bulk liquid and the partition coefficient were calculated under non-steady-state conditions. The results showed that the enhancement factor increased with an increase of the partition coefficient and the volumetric mass-transfer coefficient KLa clearly increased when a second dispersed liquid phase was added, with a clear maximum at 3% of the dispersed-phase volume fraction. The influence of the dispersed phase on KLa markedly depended on the agitation rate, and a maximum KLa was attained between 650 and 700 rpm.