An Experimental and Modelling Investigation on the Water Content of CO2and CO2-rich Mixtures Using the Differential Scanning Hygrometry (DSH) Method

Valderio Oliveira Cavalcanti, Rod Burgass, Antonin Chapoy

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)
33 Downloads (Pure)

Abstract

Monitoring humidity downstream to conditioning facilities and during transportation is essential for avoiding hydrate deposition. However, water inline monitoring under high pressure is still challenging in the CCS industry. This study presents an experimental and modelling investigation for enhancing field monitoring and model predictions. Measurements are performed using the Differential Scanning Hygrometry (DSH). This novel analytical approach has been successfully tested for measuring dew/frost temperatures for carbon dioxide, CH4+CO2, and CO2-rich mixtures in equilibrium with hydrates, free water and ice. Moreover, the DSH method has been applied for direct HP equilibrium temperature measurements. Also, this work compares three modified versions of the classical SRK EoS with the Multi-Fluid Helmholtz Energy Approximation (MFHEA). This evaluation includes Huron-Vidal and the EMS mixing rules and the cubic-plus association (CPA) approach. A thorough fitting process was carried out and, overall, comparisons with the experimental data showed that SRK+EMS yielded results as satisfactory as sCPA.
Original languageEnglish
Article number107328
JournalJournal of Chemical Thermodynamics
Volume198
Early online date9 Jun 2024
DOIs
Publication statusPublished - Nov 2024

Keywords

  • CO -rich mixtures
  • Differential scanning hygrometry
  • Direct HP Equilibrium temperature measurements
  • Water content

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • General Materials Science
  • Physical and Theoretical Chemistry

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