Bubble Point Determination for CO2 + Ethanol + Alkanolamines (Monoethanolamine, Diethanolamine, or Triethanolamine) at High Pressures

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• 作者：Dival de Brito Guerra-Neto ; Leandro Ferreira-Pinto ; Willyan Machado Giufrida ; Marcelo Santiago Zabaloy ; L煤cio Cardozo-Filho ; Osvaldo Chiavone-Filho
• 刊名：Journal of Chemical & Engineering Data
• 出版年：2014
• 出版时间：November 13, 2014
• 年：2014
• 卷：59
• 期：11
• 页码：3319-3323
• 全文大小：218K
• ISSN：1520-5134

文摘

Experimental data from the phase transition of the ternary systems {CO₂(1) + [0.25 monoethanolamine(2) + 0.75 ethanol(3)]}, {CO₂(1) + [0.25 diethanolamine(2) + 0.75 ethanol(3)]} and {CO₂(1)+ [0.25 triethanolamine(2) + 0.75 ethanol(3)]} is reported. A variable volume cell was employed using the static synthetic method in a temperature range of (313鈥?43) K, pressures up to 14 MPa and CO₂ mole fractions between 0.05 and 0.35. For xCO₂ > 0.35 phase transition data could not be measured for pressures up to 35 MPa. Vapor鈥搇iquid transitions (VLE) of bubble point (BP) are determined for the three ternary systems studied. The determination of measures of the phase equilibrium of systems involving CO₂ and alkanolamines are of great importance in the development of absorption processes. A great feature of alkanolamines is the possibility of capturing carbon dioxide (CO₂) and promoting separation of this gas from other gas streams.