An accurate numerical approach for Vapor Liquid Equilibrium calculations in a multicomponent system

An accurate numerical approach is developed for Vapor Liquid Equilibrium calculations and predicting K-value parameter in a multicomponent system including dissimilar molecules and Polar molecules and to calculate solubility of different components in a physical solvent. Equation of state methods generally do a good job of determining vapor phase properties but liquid phase is much more difficult, especially when the liquid contains dissimilar molecules and Polar molecules like H2S, CO2, alcohols and glycol which are not easily handeled.In this article flash calculation for a multi components system including polar components is evaluated by new peoposed numerical approach and the results are compared with SRK EOS and Non Random Two Liquids (NRTL) Model. also, the rate of acid gas and light alkanes absorbed per volume of circulated Triethylen glycol in a dehydration plant is calculated and this paper shows that the results of proposed numerical approach have a good agreement with experimental data and it especially has much better results for liquid phase. This article provides comparisons with experimental data.

کلیدواژه ها:

Numerical Model ، Vapor Liquid Equilibrium ، Multicomponent ، Polar components