High pressure phase behaviour of {x(1)CF(4)+x(2)NaCl+(1-x(1)-x(2))H2O}

被引:5
|
作者
Smits, PJ [1 ]
Smits, RJA [1 ]
Peters, CJ [1 ]
Arons, JDS [1 ]
机构
[1] DELFT UNIV TECHNOL,FAC CHEM TECHNOL & MAT SCI,LAB APPL THERMODYNAM & PHASE EQUILIBRIA,NL-2628 BL DELFT,NETHERLANDS
来源
JOURNAL OF CHEMICAL THERMODYNAMICS | 1997年 / 29卷 / 04期
关键词
vapour-liquid equilibrium; high pressure; phase behaviour; near-critical water;
D O I
10.1006/jcht.1996.0164
中图分类号
O414.1 [热力学];
学科分类号
摘要
Experimental results of the high pressure phase behaviour for {x(1)CF(4) + x(2)NaCl + (1-x(1)-x(2))H2O} are presented. (Gas + gas) equilibria for 10 compositions, with mole fractions of CF4 (0.0076 +/- 0.0002) < x(1) < (0.0335 +/- 0.0002), and NaCl (0.0032 +/- 0.0002) < x(2) < (0.0103 +/- 0.0002) were measured in a high-pressure autoclave with sapphire windows and magnetic stirring. Phase transitions were determined visually. The pressure range was from 20 MPa to 200 MPa and the temperature range from T = 585 K to T = 663 K. Isopleths for NaCl mass fractions omega = (0.011, 0.021 and 0.033) relative to H2O are shifted towards higher temperatures compared with the binary mixture {xCF(4) + (1-x)H2O}. The objective of this study was the investigation of the phase behaviour of a model-system encountered in supercritical water oxidation processes. (C) 1997 Academic Press Limited.
引用
收藏
页码:385 / 393
页数:9
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