cubic equation of state;
mixing rule;
vapor-liquid equilibria;
polymer solution;
D O I:
10.1016/S0378-3812(96)90011-4
中图分类号:
O414.1 [热力学];
学科分类号:
摘要:
A new mixing rule for van der Waals-type two-parameter cubic equations of state (EOSs) has been proposed in this work, which is particularly suitable for highly asymmetric systems. The new mixing rule has been applied to the PRSV and SRK EOSs to calculate vapor-liquid equilibria (VLE) of polymer solutions. Compared to the other two mixing rules which have been used for VLE calculations of polymer solutions, the new mixing rule with only one temperature-independent parameter is very accurate for a wide range of temperatures. As the new mixing rule is very simple and accurate and only one temperature-independent parameter is needed, it enables the two-parameter cubic EOSs to be used in the practical calculations needed in the industrial processing of polymer solutions.
机构:
Univ Fed Rio Grande do Sul, Escola Engn, Dept Engn Quim, BR-90040040 Porto Alegre, RS, BrazilUniv Fed Rio Grande do Sul, Escola Engn, Dept Engn Quim, BR-90040040 Porto Alegre, RS, Brazil
Staudt, P. B.
Soares, R. de P.
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机构:
Univ Fed Rio Grande do Sul, Escola Engn, Dept Engn Quim, BR-90040040 Porto Alegre, RS, BrazilUniv Fed Rio Grande do Sul, Escola Engn, Dept Engn Quim, BR-90040040 Porto Alegre, RS, Brazil
Soares, R. de P.
Secchi, A. R.
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机构:
Univ Fed Rio de Janeiro, COPPE, PEQ, BR-21945970 Rio De Janeiro, BrazilUniv Fed Rio Grande do Sul, Escola Engn, Dept Engn Quim, BR-90040040 Porto Alegre, RS, Brazil
Secchi, A. R.
Cardozo, N. S. M.
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机构:
Univ Fed Rio Grande do Sul, Escola Engn, Dept Engn Quim, BR-90040040 Porto Alegre, RS, BrazilUniv Fed Rio Grande do Sul, Escola Engn, Dept Engn Quim, BR-90040040 Porto Alegre, RS, Brazil