Hydrate-containing phase equilibria for mixed guests of carbon dioxide and nitrogen

Sun Hyung Kim, Myoung Do Seo, Jeong Won Kang, Chul Soo Lee

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17 Citations (Scopus)

Abstract

Hydrate-containing phase equilibria for mixtures composed of carbon dioxide, nitrogen and water are of potential importance for the flow assurance in the transportation of captured carbon dioxide. Literature data for such mixture tend to be reported on water free basis. In this study three- and four-phase equilibria were experimentally studied at the pressure ranging from 5 to 20. MPa. Isobaric dissolution temperatures of formed hydrates were measured and reported for accurately determined loading compositions. Complex phase behaviors composed of two-, three- and four- phases were observed and they were analyzed by comparing with calculations using GSMGem program developed by Sloan and Koh [1]. Phase equilibria were found to be sensitive to water contents in water dominating mixtures. CSMGem and HYSYS (version 7.1) from AspenTech calculations were found in general agreements with present and literature data.

Original languageEnglish
Pages (from-to)229-233
Number of pages5
JournalFluid Phase Equilibria
Volume306
Issue number2
DOIs
Publication statusPublished - 2011 Jul 25

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Keywords

  • Four-phase equilibrium
  • Hydrate-containing equilibrium
  • Three-phase equilibrium

ASJC Scopus subject areas

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

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