Mohammad Hossein Hadipanah, Seyed Hossein Mazloumi
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引用次数: 0
Abstract
In this study, the simplified version of statistical associating fluid theory (SAFT) equation of state (EOS) developed by Fu and Sandler is modified by replacing the dispersion term of this EOS with the Haghtalab–Mazloumi equation. This new SAFT-based EOS has three adjustable parameters for non-associating compounds and five adjustable parameters for associating compounds. The adjustable parameters of the new EOS are obtained by simultaneously fitting vapour pressures and liquid densities of pure substances. The new EOS shows better results in correlating vapour pressure and saturated liquid densities than SSAFT EOS for a selection of non-associating and associating substances. Then, by using proper mixing rules, the new EOS is extended for mixtures. Both self-associating and cross associating binary mixtures are used to test the capability of the new EOS in vapour–liquid equilibrium (VLE) calculations, and the results demonstrate good accuracy of the new EOS.
本研究对 Fu 和 Sandler 开发的简化版统计关联流体理论（SAFT）状态方程（EOS）进行了修改，用 Haghtalab-Mazloumi 方程取代了该 EOS 的分散项。这种基于 SAFT 的新 EOS 对非缔合化合物有三个可调参数，对缔合化合物有五个可调参数。新 EOS 的可调参数是通过同时拟合纯物质的蒸汽压力和液体密度获得的。与 SSAFT EOS 相比，新 EOS 在选定的非缔合和缔合物质的蒸汽压力和饱和液体密度的相关性方面显示出更好的结果。然后，通过使用适当的混合规则，新 EOS 扩展到混合物。自缔合和交联二元混合物都被用来测试新 EOS 在汽液平衡（VLE）计算中的能力，结果表明新 EOS 具有良好的准确性。
期刊介绍：
The Canadian Journal of Chemical Engineering (CJChE) publishes original research articles, new theoretical interpretation or experimental findings and critical reviews in the science or industrial practice of chemical and biochemical processes. Preference is given to papers having a clearly indicated scope and applicability in any of the following areas: Fluid mechanics, heat and mass transfer, multiphase flows, separations processes, thermodynamics, process systems engineering, reactors and reaction kinetics, catalysis, interfacial phenomena, electrochemical phenomena, bioengineering, minerals processing and natural products and environmental and energy engineering. Papers that merely describe or present a conventional or routine analysis of existing processes will not be considered.
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