Elemental Mercury Partitioning in High Pressure Fluids Part 2: Model Validations and Measurements in Multicomponent Systems

Antonin Chapoy, Pezhman Ahmadi, Junya Yamada, Atsushi Kobayashi, Richard Szczepanski, Xiaohong Zhang, Alessandro Speranza

Research output: Contribution to journalArticle

Abstract

A good understanding of the solubility of elemental mercury over wide ranges of temperature, pressure and composition is an important issue to assess the possibility of mercury dropping out in gas processing streams. In this work, new mercury solubility in three multicomponent systems with methane content varying between 89 – 26 mol% have been measured over a wide range of temperature (243.15 to 323.15 K) and pressure and up to 20 MPa. A group contribution method for the Peng-Robinson equation of state has been used to allow calculation of binary interactions between mercury and saturated hydrocarbons, aromatic hydrocarbons, nitrogen and carbon dioxide. The parameters of the group contribution have been adjusted using mercury solubility previously measured in single components. Predictions of the developed model are validated against independent experimental data and the data generated in this work. A good agreement between predictions and experimental data is observed, supporting the reliability of the developed model.
Original languageEnglish
Article number112773
JournalFluid Phase Equilibria
Volume523
Early online date6 Aug 2020
DOIs
Publication statusPublished - 15 Nov 2020

Keywords

  • Group contribution model
  • Mercury
  • Natural gas
  • Peng-Robinson equation of State
  • Phase behaviour

ASJC Scopus subject areas

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

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