Absorption of carbon dioxide in emulsions of aqueous monoethanolamine/diethanolamine solutions in kerosene/n-heptane
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- 作者：Hamid Reza Mortaheb ; Ali Asghar Nozaeim ; Morteza Mafi ; Babak Mokhtarani
- 关键词：Carbon dioxide ; Mass transfer rate ; Absorption capacity ; Emulsion ; Amine solution ; Separation
- 刊名：Chemical Engineering Science
- 出版年：2012
- 出版时间：12 September, 2012
- 年：2012
- 卷：82
- 期：Complete
- 页码：44-51
- 全文大小：978 K
文摘
Absorption of CO2 in water-in-oil (W/O) emulsions was investigated in this research. The absorption was studied in various emulsions with different reactants (monoethanolamine (MEA), diethanolamine (DEA)) and solvents (kerosene, n-heptane) by applying a batch setup under high pressure (up to 3 bars). The results show higher absorption rate and capacity for MEA emulsion compared to those for DEA emulsion. The absorption rate and capacity are increased by increasing pressure and reactant concentration while the effect of reactant concentration on absorption rate is more significant in the MEA emulsion compared to the DEA emulsion. Increasing the volume ratio of the dispersed phase increases the absorption rate while it decreases the absorption capacity. Analysis of absorption rate data indicates that increasing propeller speed may change the absorption mechanism.