H2S absorption at high pressure using hollow fibre membrane contactors

Rami Faiz, K. Li, M. Al-Marzouqi

Research output: Contribution to journalArticlepeer-review

27 Citations (Scopus)

Abstract

In this article, the removal of H2S from natural gas at high pressure using hollow fibre membrane contactors and water as the absorbent solvent was described and validated by a 2D comprehensive mathematical model. The modelling predictions were in a good agreement with the experimental data at low pressure of 1bar under non-wetting conditions. However, the experimental behaviour at high pressure in the range of 10-50bar was always lower than the modelling predictions. And thus, a sensitivity analysis was carried out to study the influence of gas, liquid, membrane diffusion and solubility coefficients of H2S at high pressure upon the modelling behaviour compared with the experimental trend. The modelling results confirmed that these parameters were still insensitive as the model predictions changed slightly with altering these coefficients. Conversely, membrane wetting was confirmed to be an important factor even for small ratios, i.e. pseudo-wetting (1-3%). The model was able to predict the absorption of H2S at higher pressures under 3% pseudo-wetting. Although the type of membranes used in this study was highly hydrophobic (ePTFE) and thus membrane wetting was not expected, pseudo-wetting phenomenon was confirmed to be an important factor at high pressure.

Original languageEnglish
Pages (from-to)33-42
Number of pages10
JournalChemical Engineering and Processing: Process Intensification
Volume83
DOIs
Publication statusPublished - Sep 2014

Keywords

  • High pressure
  • Mathematical modelling
  • Membrane contactors
  • Pseudo wetting

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)
  • Energy Engineering and Power Technology
  • Industrial and Manufacturing Engineering

Fingerprint

Dive into the research topics of 'H2S absorption at high pressure using hollow fibre membrane contactors'. Together they form a unique fingerprint.

Cite this