Three-dimensional scheme of supercritical carbon dioxide extraction of heavy hydrocarbon mixture in (pressure; Temperature; recovery) coordinates

Svetlana Rudyk*, Pavel Spirov

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)


A heavy hydrocarbon mixture represented by C17-C31 carbon groups was investigated to determine extraction recoveries by supercritical carbon dioxide in the ranges of 12-65 MPa for pressure and 50-90 C for temperature. The purpose of the study was to obtain a three-dimensional scheme of the SC-CO2/heavy hydrocarbon mixture system in pressure-temperature-recovery coordinates, which allows the prediction and numerical modeling of phase behavior. At lower temperatures, high recoveries were attained at lower pressures. The highest recovery of 93% was obtained at 70 C and 56 MPa. The recoveries greater than 65% were determined at the breakover points where the pressure increased by 7 MPa with a temperature increase of 10 C. The phase envelope, 3D scheme, and the equations describing the boundaries of the system are presented.

Original languageEnglish
Pages (from-to)5996-6001
Number of pages6
JournalEnergy and Fuels
Issue number10
Publication statusPublished - Oct 17 2013
Externally publishedYes

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Fuel Technology
  • Energy Engineering and Power Technology

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