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Solubility measurement of methane in triethylene glycol aqueous solutions (90,95,98 wt.% triethylene glycol) from 298 to 323 K and 0.17 to 2.5 MPa

Zvawanda, Paul ; Naidoo, Paramespri ; Nelson, Wayne M. ; Moodley, Kuveneshan

Fluid phase equilibria, 2024-08, Vol.583, p.114114, Article 114114 [Peer Reviewed Journal]

Elsevier B.V

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  • Title:
    Solubility measurement of methane in triethylene glycol aqueous solutions (90,95,98 wt.% triethylene glycol) from 298 to 323 K and 0.17 to 2.5 MPa
  • Author: Zvawanda, Paul ; Naidoo, Paramespri ; Nelson, Wayne M. ; Moodley, Kuveneshan
  • Subjects: CPA model ; Methane + water + TEG system ; Natural gas dehydration ; Solubility data ; Static synthetic method
  • Is Part Of: Fluid phase equilibria, 2024-08, Vol.583, p.114114, Article 114114
  • Description: •Solubility data were measured using a static synthetic apparatus.•New P-T-x data for CH4 + H2O + TEG (H2O:TEG wt.% of 10:90, 5:90, 2:98 were measured.•The measurements were performed from 298 to 323 K and pressures up to 2.5 MPa.•The data are vital in process design of natural gas systems.•Thermodynamic modelling of the data was performed using the CPA equation of state. Limited phase equilibria data exists for the methane + water + triethylene glycol system. In this work, new phase equilibrium data were measured for this system for a temperature range of 298 to 323 K and a pressure range of 0.17 to 2.5 MPa. These data add to the information that is required in the design of TEG contactor units since they normally operate over a temperature and pressure range of 283 to 329 K, and 2 to 10 MPa respectively. The data were measured using a static synthetic apparatus. The measured data were modelled in Apen Plus V12.1 using the Cubic Plus Association equation of state. The model correlation yielded a satisfactory description of the measured data since the maximum absolute average relative deviation in pressure was 4.30 %. [Display omitted]
  • Publisher: Elsevier B.V
  • Language: English
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