Prediction of the phase behavior of BTEX and alkane hydrocarbons in the presence of Tri-Ethylene Glycol (TEG) solvent

摘要

A computational framework according to the CPA Equation of state by considering hydrogen bonding association and solvation effects has been proposed for accurate prediction of phase behavior of complex mixtures of triethylene glycol (TEG), BTEX aromatic hydrocarbons (benzene, toluene, ethylbenzene, and o-xlylene) and alkanes (methane, ethane, propane). The overall average absolute deviation between the predicted and measured phase compositions, regarding 150 data points is about 2.40% suggesting the accuracy of the presented approach. The presented model can be used for accurate design of BTEX containing natural gas dehydration plants in petroleum industry.