Journal
12TH INTERNATIONAL CONFERENCE ON GREENHOUSE GAS CONTROL TECHNOLOGIES, GHGT-12
Volume 63, Issue -, Pages 1890-1902Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.egypro.2014.11.198
Keywords
Heat of absorption; Enthalpy of absorption; MDEA; DMMEA; Methyldiethanolamine; Dimethylmonoethanolamine; Calorimeter
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In this work the heat of absorption of CO2 into aqueous solutions of N-methyldiethanolamine (MDEA) and N, N-dimethylmonoethanolamine (DMMEA) has been investigated in a reaction calorimeter. The experiments were conducted at the concentrations 2M and 4.2M, and the temperatures 313 K, 353 K and 393 K. The resulting differential heats of absorption were plotted as a function of liquid CO2 loading. An effect of temperature on the heat of absorption was observed for MDEA. This effect was larger at low loadings and the lower amine concentration. This was also observed for DMMEA but here the effect of temperature was larger. The heat of absorption of CO2 into aqueous DMMEA is slightly larger than for MDEA. (C) 2013 The Authors. Published by Elsevier Ltd.
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