Dew points of binary carbon dioxide + water and ternary carbon dioxide + water + methanol mixtures: Measurement and modelling |
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| Affiliation: | 1. Departamento de Quı́mica Orgánica y Quı́mica Fı́sica. Facultad de Ciencias, Universidad de Zaragoza, Zaragoza 50.009, Spain;2. Laboratoire de Chimie Physique de Marseille. Faculté des Sciences de Luminy, Université de la Méditerranée, 13.288 Marseille Cedex 9, France;1. School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, China;2. Department of Chemistry, Lanzhou University, Lanzhou, Gansu 730000, China;1. Department of Chemical Engineering, School of Chemical and Petroleum Engineering, Shiraz University, Shiraz, Iran;2. Sarkhoon and Qeshm Gas Refining Company, Bandar Abbas, Iran;1. Department of Mechanical Engineering, University of Maryland, College Park, MD 20742, USA;2. Department of Mechanical Engineering, The Petroleum Institute, P.O. Box 2533, Abu Dhabi, United Arab Emirates;1. State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan, 430071, China;2. Energy, the Commonwealth Scientific and Industrial Research Organisation (CSIRO), Australia |
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| Abstract: | Dew points for four carbon dioxide + water mixtures between 1.2×105 and 41.1×105 Pa in the temperature range from 251.9 to 288.2 K, and eight carbon dioxide + water + methanol mixtures between 1.2×105 and 43.5×105 Pa and temperatures from 246.0 to 289.0 K were experimentally determined. The experimental results obtained on the binary and ternary systems were analysed in terms of a predictive excess function–equation of state (EF–EOS) method, which reproduced the experimental dew point temperature data with absolute average deviation (AAD) between 0.8 and 1.8 K for the systems with water, and from 0.0 to 2.7 K for the systems with water and methanol. The experimental results obtained for carbon dioxide + water mixtures, with molar fraction of water lower than 0.00174, at pressure values higher than 5×105 Pa were also compared to a predictive equation of state model. It reproduced experimental dew point temperature data with AAD between 0.2 and 0.6 K. |
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