Dehydration of natural gas using choline chloride based deep eutectic solvents: COSMO-RS prediction

Tayeb Aissaoui, Inas M. AlNashef, Yacine Benguerba

Research output: Contribution to journalArticlepeer-review

39 Scopus citations

Abstract

Water removal from natural gas is one of the most potent techniques widely used in the pre-treatment processes required for avoiding industrial problems such as corrosion and hydrate formation. Due to its accuracy and precision, conductor-like screening model for a real solvent (COSMO-RS) has recently attracted the attention of researchers around the globe in many applications. In this article, COSMO-RS investigation on the dehydration of natural gas using choline chloride (ChCl) based deep eutectic solvents (DESs) was conducted. The structural combination of the DESs and their water absorption mechanism were well interpreted by performing mixture job to form the DESs and measuring the activity coefficient, σ profile and σ potential of the involved species using COSMO-RS. In addition, vapor pressures for the formed DESs were reported. The activity coefficients of H2O in DESs were also investigated. The results found in this work imply that DESs can be good alternative to the conventional absorbents for natural gas dehydration. To the best of our knowledge, this is the first report implements COSMO-RS in dehydration of natural gas using DESs.

Original languageBritish English
Pages (from-to)571-577
Number of pages7
JournalJournal of Natural Gas Science and Engineering
Volume30
DOIs
StatePublished - 1 Mar 2016

Keywords

  • Choline chloride
  • COSMO-RS
  • Deep eutectic solvents
  • Dehydration
  • Glycols
  • Natural gas

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