Sweetening liquefied petroleum gas (LPG): Parametric sensitivity analysis using Aspen HYSYS

Hanan Jalal Qeshta, Salaheddin Abuyahya, Priyabrata Pal, Fawzi Banat

Research output: Contribution to journalArticlepeer-review

27 Scopus citations


The current investigation aims at studying LPG sweetening process using tertiary alkanolamine (methyldiethanolamine; MDEA) by Aspen HYSYS version 8.0. Design criteria were explained for sweetening LPGs including MDEA concentration, mass flow rate, circulation rate etc. The effects of operating parameters such as temperature and pressure on the proposed process were also studied. A steady state model was developed for determining the sensitivity of parameters affecting the process. The most suited feed LPG temperature was determined to be 45 °C. The optimum MDEA concentration and flow rate was found to be 35.0 wt% and 24.43 m3/h, respectively. The parameters which indirectly affect the extraction process such as reboiler operating pressure, rich MDEA temperature, reflux ratio and boilup ratio were also determined.

Original languageBritish English
Pages (from-to)1011-1017
Number of pages7
JournalJournal of Natural Gas Science and Engineering
StatePublished - 1 Sep 2015


  • Aspen HYSYS
  • Extraction
  • Liquefied petroleum gas
  • Methyldiethanolamine
  • Sweetening


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