SCI和EI收录∣中国化工学会会刊

›› 2011, Vol. 19 ›› Issue (3): 496-503.

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Prediction of Volumetric Properties(p-v-T)of Natural Gas Mixtures Using Extended Tao-Mason Equation of State

Hajir Karimi1, Fakhri Yousefi2, Mohammad Mehdi Papari3   

  1. 1. Department of Chemical Engineering, Yasouj University, Yasouj, 75914-353, Iran;
    2. Department of Chemistry, Yasouj University, Yasouj, 75914-353, Iran;
    3. Department of Chemistry, Shiraz University of Technology, Shiraz, 71555-313, Iran
  • 收稿日期:2010-07-08 修回日期:2011-02-09 出版日期:2011-06-28 发布日期:2011-06-28
  • 通讯作者: Fakhri Yousefi, E-mail: fyousefi@mail.yu.ac.ir

Prediction of Volumetric Properties(p-v-T)of Natural Gas Mixtures Using Extended Tao-Mason Equation of State

Hajir Karimi1, Fakhri Yousefi2, Mohammad Mehdi Papari3   

  1. 1. Department of Chemical Engineering, Yasouj University, Yasouj, 75914-353, Iran;
    2. Department of Chemistry, Yasouj University, Yasouj, 75914-353, Iran;
    3. Department of Chemistry, Shiraz University of Technology, Shiraz, 71555-313, Iran
  • Received:2010-07-08 Revised:2011-02-09 Online:2011-06-28 Published:2011-06-28

摘要: A statistical-mechanical-based equation of state(EOS)for pure substances,the Tao-Mason equation of state,is successfully extended to prediction of the(p-v-T)properties of fourteen natural gas mixtures at temperatures from 225 K to 483 K and pressures up to 60.5 MPa.This work shows that the Tao-Mason equation of state for multicomponent natural gas is predictable with minimal input information,namely critical temperature,critical pressure,and the Pitzer acentric factor.The calculated results agree well with the experimental data.From a total of 963 data of density and 330 data of compressibility factor for natural gases examined in this work,the average absolute deviations(AAD)are 1.704% and 1.344%,respectively.The present EOS is further assessed through the comparisons with Peng-Robinson(PR)equation of state.For the all of mixtures Tao-Mason(TM) EOS outperforms the PR EOS.

关键词: equation of state, natural gas, mixture, density, compressibility factor

Abstract: A statistical-mechanical-based equation of state(EOS)for pure substances,the Tao-Mason equation of state,is successfully extended to prediction of the(p-v-T)properties of fourteen natural gas mixtures at temperatures from 225 K to 483 K and pressures up to 60.5 MPa.This work shows that the Tao-Mason equation of state for multicomponent natural gas is predictable with minimal input information,namely critical temperature,critical pressure,and the Pitzer acentric factor.The calculated results agree well with the experimental data.From a total of 963 data of density and 330 data of compressibility factor for natural gases examined in this work,the average absolute deviations(AAD)are 1.704% and 1.344%,respectively.The present EOS is further assessed through the comparisons with Peng-Robinson(PR)equation of state.For the all of mixtures Tao-Mason(TM) EOS outperforms the PR EOS.

Key words: equation of state, natural gas, mixture, density, compressibility factor