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首页> 外文会议>International Institute of Refrigeration International Conference on Cryogenics >Development of an Equation of State for the Representation of Solid-Liquid, Solid-Vapour, and Liquid-Vapour Equilibria of Substances of Interest for the Air Distillation Process
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Development of an Equation of State for the Representation of Solid-Liquid, Solid-Vapour, and Liquid-Vapour Equilibria of Substances of Interest for the Air Distillation Process

机译：用于蒸汽蒸馏工艺感兴趣的物质物质的表示状态的状态的发展

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摘要

A common problem in the industrial cryogenic processes, as cryogenic air distillation, is the solidification of some impurities. Consequently, a thermodynamic model suitable for being applied in the simulation of cryogenic processes should account for the solid-fluid equilibrium. The capability of the Yokozeki equation of state in representing phase equilibrium experimental values of pure compounds has been verified. Some limits have been found with respect to the solid-liquid equilibrium. In order to overcome these limits the Solid Liquid Vapour Peng-Robinson equation of state (SLV PR EoS) has been proposed. A comparison between the SLV PR EoS and the experimental values has been presented for nitrogen, oxygen, argon, krypton, xenon, neon, carbon dioxide, nitrous oxide, methane, ethane, ethylene, propane and propylene, and a good agreement has been found. Furthermore, the equation proposed has been used for representing the phase equilibria of the binary mixtures methane-carbon dioxide and ethane-carbon dioxide.
机译：工业低温过程中的常见问题是低温空气蒸馏，是一些杂质的凝固。因此，适于在低温过程模拟中应用的热力学模型应该考虑固体流体平衡。已经验证了代表纯化合物的相平衡实验值在代表纯化合物的相平衡实验值中的Yokozeki方程的能力。关于固液平衡的一些限制已经发现。为了克服这些限制，已经提出了状态（SLV PR EOS）的固体液体蒸汽韧带方程。已经介绍了SLV Pr EOS与实验值之间的比较，呈氮，氧气，氩气，氪，氙，氖，二氧化碳，氧化二氮，甲烷，乙烷，乙烯，丙烷和丙烯，并发现了良好的一致。此外，所提出的等式已用于表示二元混合物甲烷 - 二氧化碳和乙烷 - 二氧化碳的相平衡。

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