Share

IIR document

Development of an equation of state for the representation of solid-liquid, solid-vapour, and liquid-vapour equilibria of substances of interest for the air distillation process.

Number: pap. n. 028

Author(s) : STRINGARI P., CAMPESTRINI M., COQUELET C., et al.

Summary

A common problem in the industrial cryogenic processes, as cryogenic air distillation, is the solidification of some impurities. Consequently, a thermodynamic model suitable for being applied in the simulation of cryogenic processes should account for the solid-fluid equilibrium. The capability of the Yokozeki equation of state in representing phase equilibrium experimental values of pure compounds has been verified. Some limits have been found with respect to the solid-liquid equilibrium. In order to overcome these limits the Solid Liquid Vapour Peng-Robinson equation of state (SLV PR EoS) has been proposed. A comparison between the SLV PR EoS and the experimental values has been presented for nitrogen, oxygen, argon, krypton, xenon, neon, carbon dioxide, nitrous oxide, methane, ethane, ethylene, propane and propylene, and a good agreement has been found. Furthermore, the equation proposed has been used for representing the phase equilibria of the binary mixtures methane-carbon dioxide and ethane-carbon dioxide.

Available documents

Format PDF

Pages: 442-447

Available

  • Public price

    20 €

  • Member price*

    Free

* Best rate depending on membership category (see the detailed benefits of individual and corporate memberships).

Details

  • Original title: Development of an equation of state for the representation of solid-liquid, solid-vapour, and liquid-vapour equilibria of substances of interest for the air distillation process.
  • Record ID : 30007016
  • Languages: English
  • Source: Cryogenics 2012. Proceedings of the 12th IIR International Conference: Dresden, Germany, September 11-14, 2012.
  • Publication date: 2012/09/11

Links


See other articles from the proceedings (78)
See the conference proceedings

Indexing