Measurement of the high-pressure-high-temperature fluid phase behavior of the systems CF4 + H2O, CF4 + H2O + NaCl, CHF3 + H2O, and CHF3 + H2O + NaCl

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作者：

Delft University of Technology, Faculty of Applied Sciences, Lab. of Applied Thermodynamics, Julianalaan 136, 2628 BL Delft, Netherlands ^{[1
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来源：

Fluid Phase Equilib. | / 151卷 / 745-751期

关键词：

Autoclaves - Composition effects - Fluorocarbons - High pressure effects - High temperature effects - Oxidation - Phase equilibria - Phase transitions - Sodium chloride - Solubility - Water;

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摘要：

The high-pressure-high-temperature fluid phase behavior of model systems encountered in supercritical water oxidation (SCWO) processes was investigated. The systems consist of: CF4+H2O, CF4+H2O+NaCl, CHF3+H2O and CHF3+H2O+NaCl. Gas-gas equilibria were measured for various water-rich mixtures in a high-temperature autoclave. In comparison with the binary CF4+H2O, the immiscibility region of the system CHF3+H2O was located at significantly lower temperatures. The addition of NaCl shifted the immiscibility regions towards higher temperatures to the corresponding binary systems.

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