Experiment and prediction of water content of sour natural gas with an modified cubic plus association equation of state

• Main Authors: Liu Yang, Zhu Yun, Zhu Jun
• Format: Article
• Language: English
• Published: Sciendo 2018-06-01
• Series: Polish Journal of Chemical Technology
• Subjects: water content; sour natural gas; cpa-eos; binary interaction parameter; pr
• Online Access: https://doi.org/10.2478/pjct-2018-0029

In this work, new experimental value for water content in sour natural gas were reported. In addition, to predict the water content in sour natural gas, a modified cubic plus association equation of state (CPA-EoS) was also proposed. In this model, a new energy parameter a was proposed to make an accurate description of saturated liquid density. Additionally, a temperature dependent binary interaction parameter kij for six binary systems was also obtained. Lastly, a comparison between the prediction results of the modified CPA-EoS and the experimental data was presented, and the results showed that the modified CPA-EoS could predict the water content in sour natural gas with high accuracy, which has an AAD of 3.6722% with experimental data in literatures and an AAD of 1.946% for experimental data reported in this work.