Concentration of triethylene glycol, diethylene glycol and ethylene glycol in supercritical carbon dioxide up to 16 MPa at 313. 15 and 333. 15K

Gen Ichi Kaminishi, Satoshi Takano, Chiaki Yokoyama, Shinji Takahashi, Katsuhiko Takeuchi

Research output: Contribution to journalArticlepeer-review

17 Citations (Scopus)

Abstract

The concentrations of triethylene glycol (TEG), diethylene glycol (DEG) and ethylene glycol (EG) in supercritical carbon dioxide (CO2) up to 16 MPa at 313. 15, and 333. 15K were measured by a vapor recirculation method. The concentrations of these glycols increase with increasing pressure and markedly increase from about 8 MPa at 313. 15 K and from about 11 MPa at 333. 15 K. A plot of the concentration of TEG, DEG and EG vs the density of pure CO2 shows a gradually increasing curve. Also the concentrations were in the order of the vapor pressures of the glycols. The data were correlated using the following three methods: 1) Modified Redlich-Kwong (MRK) equation, 2) Peng-Robinson (PR) equation, 3) virial equation. From the results, it was found that the MRK equation gave a better fits than 2) or 3). However the correlation by the modified Peng-Robinson (MPR) equation proposed by Mohamed et al. gave almost the same results as the MRK equation.

Original languageEnglish
Pages (from-to)365-372
Number of pages8
JournalFluid Phase Equilibria
Volume52
Issue numberC
DOIs
Publication statusPublished - 1989 Dec

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

Fingerprint Dive into the research topics of 'Concentration of triethylene glycol, diethylene glycol and ethylene glycol in supercritical carbon dioxide up to 16 MPa at 313. 15 and 333. 15K'. Together they form a unique fingerprint.

Cite this