Comparison of Carbon Dioxide Absorption in Aqueous MEA, DEA, TEA, and AMP Solutions
Comparison of Carbon Dioxide Absorption in Aqueous MEA, DEA, TEA, and AMP Solutions
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DOI：
10.5012/bkcs.2013.34.3.783
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发表时间：
2013-03-20
影响因子：
1.7
通讯作者：
Nam, Sung Chan
中科院分区：
文献类型：
--
作者：
Kim, Young Eun;Lim, Jin Ah;Nam, Sung Chan
作为一种减少温室气体排放的方法，发电厂二氧化碳的分离和捕获过程正在引起人们的兴趣。在这项研究中，研究了烷醇胺水溶液作为二氧化碳捕获的吸收剂。使用连续搅拌反应器在 313、333 和 353 K 下研究 CO2 在烷醇胺水溶液中的溶解度。此外，使用差示反应量热计 (DRC) 在 298 K 下测量吸收剂和 CO2 分子之间的吸收热 (-Delta H-abs)。溶解度和吸收热在略高于大气压的条件下测定。单乙醇胺（MEA）、二乙醇胺（DEA）、三乙醇胺（TEA）和2-氨基-2-甲基-1-丙醇（AMP）的CO2吸收焓分别为88.91、70.44、44.72和63.95。这项研究表明，吸收热与吸收剂再生的热量直接相关，并且取决于胺类型和 CO2 负载量。
The separation and capture process of carbon dioxide from power plants is garnering interest as a method to reduce greenhouse gas emissions. In this study, aqueous alkanolamine solutions were studied as absorbents for CO2 capture. The solubility of CO2 in aqueous alkanolamine solutions was investigated with a continuous stirred reactor at 313, 333 and 353 K. Also, the heat of absorption (-Delta H-abs) between the absorbent and CO2 molecules was measured with a differential reaction calorimeter (DRC) at 298 K. The solubility and heat of absorption were determined at slightly higher than atmospheric pressure. The enthalpies of CO2 absorption in monoethanolamine (MEA), diethanolamine (DEA), triethanolamine (TEA), and 2-amino-2-methyl-1-propanol (AMP) were 88.91, 70.44, 44.72, and 63.95, respectively. This investigation showed that the heat of absorption is directly related to the quantity of heat for absorbent regeneration, and is dependent on amine type and CO2 loading.