Phase identification of natural gas system with high CO2 content through simulation approach using Peng-Robinson model

The phase behavior for natural gas mixtures with high CO2 content and heavier hydrocarbons up to pentane for cryogenic separation has been obtained through simulation using Peng-Robinson (PR) model. The bubble point and dew point curves which define the liquid-vapor and solid-vapor domains for separation are obtained by generating the pressure-temperature phase diagram. The simulations are performed using Aspen HYSYS. The validation for the use of PR model is done by comparing the results of CO2 freeze-out temperature predictions for PR and Soave-Redlich-Kwong (SRK) model with the experimental data available in the literature.

[1]  M. A. Bustam,et al.  Thermodynamic effect of ammonium based ionic liquids on CO2 hydrates phase boundary , 2017 .

[2]  L. K. Keong,et al.  Impact of acetone on phase boundary of methane and carbon dioxide mixed hydrates , 2016 .

[3]  Abulhassan Ali,et al.  Cryogenic carbon dioxide separation from natural gas: a review based on conventional and novel emerging technologies , 2014 .

[4]  Chunfeng Song,et al.  Optimization of a novel cryogenic CO2 capture process by response surface methodology (RSM) , 2014 .

[5]  Eric F. May,et al.  The removal of CO2 and N2 from natural gas: A review of conventional and emerging process technologies , 2012 .

[6]  Yongping Yang,et al.  A novel CO2 cryogenic liquefaction and separation system , 2012 .

[7]  Dean Fantazzini,et al.  Global Oil Risks in the Early 21st Century , 2011 .

[8]  Allan Hart,et al.  Cryogenic CO2 capture in natural gas , 2009 .

[9]  A. Kidnay,et al.  Fundamentals of Natural Gas Processing , 2006 .

[10]  Alírio E. Rodrigues,et al.  Separation of CH4/CO2/N2 mixtures by layered pressure swing adsorption for upgrade of natural gas , 2006 .

[11]  J. Prausnitz,et al.  Phase Equilibria for Systems Containing Hydrocarbons, Water, and Salt: An Extended Peng−Robinson Equation of State , 1998 .

[12]  Fred Kurata,et al.  Solid‐liquid‐vapor phase behavior of the methane‐carbon dioxide system , 1962 .

[13]  Donald L. Katz,et al.  Phase Equilibria in the Carbon Dioxide–Methane System , 1954 .

[14]  M. Z. Abdullah,et al.  Parametric Analysis of Carbon Dioxide Adsorption on Nanoporous Activated Carbon Using Computational Approach , 2016 .

[15]  Craig A. Williams,et al.  Use Of The Peng-Robinson Equation Of State To Predict Hydrocarbon Phase Behavior And Miscibility For Fluid Displacement , 1980 .