Calculation of H_2O-NH_3-CO_2 Vapor-Liquid Equilibria

化学工业与工程

Chemcial Industry and Engineering

2004, Vol. 21

Issue (3) :193-197 DOI:

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Calculation of H_2O-NH_3-CO_2 Vapor-Liquid Equilibria

WEI Shun-an, XUE Rong-shu (Chemistry and Chemical Engineering Institute,Chongqing University,Chongqing 400044,China)

(Chemistry and Chemical Engineering Institute,Chongqing University,Chongqing 400044,China

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Abstract A set of interactive energy parameters of UNIQUAC equation were obtained to calculate the H_2O-NH_3-CO_2 vapor-liquid equilibria for the conditions of temperatures from 323.15K to 473.15K,pressures from 0.2MPa to 8.0MPa,and the maximum NH_3 concentrations up to 0.3 mole fraction.The calculated results of the model were consistent very well with that of the experiments.This method can be used in simulation system of the urea process.

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Received 2004-05-15; published 2004-05-15

Cite this article:

WEI Shun-an, XUE Rong-shu .Calculation of H_2O-NH_3-CO_2 Vapor-Liquid Equilibria[J] Chemcial Industry and Engineering, 2004,V21(3): 193-197