期刊
CHEMICAL ENGINEERING SCIENCE
卷 75, 期 -, 页码 298-308出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ces.2012.03.047
关键词
CO2 capture; Piperazine; Absorption; Mass transfer; Kinetics; Separation
资金
- National Natural Science Foundation of China [50876051]
A small wetted wall column (WWC) was used to study the kinetics of CO2 absorbed in PZ and NH3/PZ blended solution. The experiments of CO2 absorption into 0.1-0.4 M PZ and 0.53-4 M NH3/0.1-0.4 M PZ mixed solution at 10-40 degrees C have been done in wetted wall column under the driving force of 8-25 kPa in this paper. The 'interface concentration corrected-pseudo first order' mass transfer model and 'Ternary-termolecular' reaction mechanism were proposed to describe the CO2 absorption into NH3/PZ system for the high driving force and low PZ concentration condition. Both of the models in this study used for CO2 with NH3/PZ blended solution were in a good agreement with the experimental results. (C) 2012 Elsevier Ltd. All rights reserved.
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