Solubility of Carbon Dioxide in Aqueous 2-(2-Aminoethylamine)ethanol (AEEA) Solution and Its Mixtures with N-Methyldiethanolamine/2-Amino-2-methyl-1-propanol

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• 作者：Chao Guo ; Shaoyun Chen ; Yongchun Zhang
• 刊名：Journal of Chemical & Engineering Data
• 出版年：2013
• 出版时间：February 14, 2013
• 年：2013
• 卷：58
• 期：2
• 页码：460-466
• 全文大小：368K
• 年卷期：v.58,no.2(February 14, 2013)
• ISSN：1520-5134

文摘

Solubility measurements of carbon dioxide (CO₂) in aqueous 2-(2-aminoethylamino)ethanol (AEEA, 15 wt %), AEEA + N-methyldiethanolamine (MDEA, 5, 10 wt %), and AEEA + 2-amino-2-methyl-1-propanol (AMP, 5, 10 wt %) solutions as CO₂ absorbents were performed at CO₂ partial pressure from (0.8 to 800) kPa and temperatures of (303, 313, and 323) K. With increasing the MDEA/AMP amount to AEEA, CO₂ loading of the absorbents decreased, while the absorption rate increased. At low CO₂ partial pressure (< 30 kPa), the loading of AEEA + AMP was higher than that of AEEA + MDEA, while at high CO₂ partial pressure (> 100 kPa), the loading of AEEA + AMP was lower than that of AEEA + MDEA at the same concentration. Furthermore, the absorption rate was in the order AEEA + AMP > AEEA + MDEA > AEEA.