期刊
12TH INTERNATIONAL CONFERENCE ON GREENHOUSE GAS CONTROL TECHNOLOGIES, GHGT-12
卷 63, 期 -, 页码 1446-1455出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.egypro.2014.11.154
关键词
CO2 capture; absorption; heat of absorption; vapor-liquid equilibrium; Gibbs-Helmholtz equation
Heat of absorption of CO2 and partial pressure of CO2 with aqueous solutions of MEA has been measured in a reaction calorimeter CPA122 at 40, 80, and 120 degrees C for 30 wt% MEA solution and at 120 degrees C for 10 and 70 wt % MEA solutions. Heat of absorption measured in this work is also differential in loading, i. e. CO2 has been added to the reactor in steps. An experimental set-up used by Kim and Svendsen (2007) has been used in this work after a small modification. Experiments show that heat of absorption depends both on loading and temperature, though the temperature dependency is not as high as was reported earlier. Application of the Gibbs - Helmholz correlation for the estimation of the heat of absorption based on experimental PCO2 data is discussed. (C) 2014 The Authors. Published by Elsevier Ltd.
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