System isobaric vapor-liquid

Prediction of Vapor Composition in Isobaric Vapor-Liquid Systems Containing Salts at Saturation... 

Fig. 15. Isobaric vapor—liquid—liquid (VLLE) phase diagrams for the ethanol—water—benzene system at 101.3 kPa (D-D) representHquid—Hquid tie-lines (A—A), the vapor line I, homogeneous azeotropes , heterogeneous azeotropes Horsley s azeotropes, (a) Calculated, where A is the end poiat of the vapor line and the numbers correspond to boiling temperatures ia °C of 1, 70.50 2, 68.55 3, 67.46 4, 66.88 5, 66.59 6, 66.46 7, 66.47, and 8, the critical poiat, 66.48. (b) Experimental, where A is the critical poiat at 64.90°C and the numbers correspond to boiling temperatures ia °C of 1, 67 2, 65.5 3, 65.0 ...

Dejoz, A., Gonzales-Alfaro, V., Miguel, P.J., Vazquez, M.I. (1996) Isobaric vapor-liquid equilibria for binary systems composed of octane, decane, and dodecane at 20 kPa. J. Chem. Eng. Data 41, 93-96. 

Aucejo, A., Loras, S., Munoz, R., Reich, R., and Segura, H. Isobaric vapor-liquid equilibrium in the systems 2-methylpentane-r methyl 1,1-dimethylethyl ether,-r ethyl 1,1-dimethylethyl ether, and-r methyl l,l-dimethylpropylether,7 Chem. Eng. Data, 43(6) 973-977, 1998. 

Blanco, A.M., Beltran, S., Cabezas, J.L., and Coca, J. Phase equilibria of binary systems formed by hydrocarbons from petroleum fractions and the solvents TV-methylpyrrolidone and /(Wdimethylformamide. 1. Isobaric vapor-liquid equilibria. / Chem. Eng. Data, 42(5) 938-942, 1997. 

Ortega, J., Espiau, F., Tojo, J., Canosa, J., and Rodriguez, A. Isobaric vapor-liquid equilibria and excess properties for the binary systems of methyl esters -t heptane, J. Chem. Eng. Data, 48(5) 1183-1190, 2003. 

Wisniak, J. and Gabai, E. Isobaric vapor-liquid equilibria in the systems methyl acetate + 1-hexene and 1 -hexene + 2-propanol, J. Chem. Eng. Data, 41(1) 143-146, 1996. 

The data in Tables I-XVI (see Appendix for all tables) show the isobaric vapor-liquid equilibrium results at the boiling point for potassium, ammonium, tetramethylammonium, tetraethylammonium, tetra-n-propylammonium, and tetra-n-butylammonium bromides in various ethanol-water mixtures at fixed liquid composition ratios. The temperature, t, is the boiling temperature for all solutions in these tables. In all cases, the ethanol-water composition was held constant between 0.20 and 0.35 mole fraction ethanol since it is in this range that the most dramatic salt effects on vapor-liquid equilibrium in this particular system should be observed. That is, previous data (12-15,38) have demonstrated that a maximum displacement of the vapor-liquid equilibrium curve by salts frequently occurs in this region. In the results presented here, it should be noted that Equation 1 has been modified to... 

Table I. Isobaric Vapor—Liquid Equilibrium Data for the Potassium Bromide—Ethanol—Water System at x = 0.206 0.001 (760 5 Torr)...

Figure 14.14 shows the critical locus, along with some isothermal and isobaric (vapor + liquid) sections, for a type III system. Lines ab and cd are the vapor... 

The Non-Random, Two Liquid Equation was used in an attempt to develop a method for predicting isobaric vapor-liquid equilibrium data for multicomponent systems of water and simple alcohols—i.e., ethanol, 1-propanol, 2-methyl-l-propanol (2-butanol), and 3-methyl-l-butanol (isoamyl alcohol). Methods were developed to obtain binary equilibrium data indirectly from boiling point measurements. The binary data were used in the Non-Random, Two Liquid Equation to predict vapor-liquid equilibrium data for the ternary mixtures, water-ethanol-l-propanol, water-ethanol-2-methyl-1-propanol, and water-ethanol-3-methyl-l-butanol. Equilibrium data for these systems are reported. 

Isobaric Vapor-Liquid Equilibrium in the Acetic Acid-Acetone System... 

Isobaric vapor-liquid equilibrium data at atmospheric pressure are reported for the four systems of the present investigation in Tables I-VI. Salt concentrations are reported as mole fraction salt in the solution, while mixed-solvent compositions are given on a salt-free basis. A single fixed-liquid composition was used for potassium iodide and sodium acetate potassium acetate used three—all chosen from the region of ethanol-water composition where relative volatility is highest. In the... 

Table I. Isobaric Vapor-Liquid Equilibrium Data for the Potassium Iodide—Ethanol—Water System at x — 0.309 (758 d= 3 torr)...

Pequemh, A., Carlos Asensi, J., Gomis V. Isobaric vapor-liquid-liquid equilibrium and vapor-liquid equilibrium for the quaternary system water-ethanol-cyclohexane -isooctane at 101.3 kPa. J. Chem. Eng. Data, 2010, 55,1227. 

Kamihama, N., Matsuda, H., Kurihara, K., Tochigi, K., Oba, S. Isobaric vapor-liquid equilibria for ethanol + water + ethylene glycol and its constituent three binary systems. J. Chem. Eng. Data, dx.doi.org/10.1021/je2008704. 

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