Amine processes outperform in sweetening LNG plant feed

Richard Ochieng, Abdallah S. Berrouk, Cornelis J. Peters, Justin Slagle

Research output: Contribution to specialist publicationArticle

4 Scopus citations


Abu Dhabi Gas Liquefaction Ltd. (ADGAS) has compared the technical and economic performances of two modes for removing carbon dioxide and hydrogen sulfide from sour natural gas feed to its Das Island liquefaction plant. Since the plant started up in 1977, ADGAS has employed the Benfield HiPure process at Das Island to purify sour natural gas to ultrasweet specifications before it moves to liquefaction. The process consists of a DEA-promoted hot potassium carbonate section followed by a DEA section. Besides the Benfield process's relatively high capital and operating costs and high stripping energy, reports of major process concerns of corrosion, erosion, and column instability are frequent for units that use the process, in particular for the hot potassium carbonate absorber. Liquid from the carbonate regenerator's condenser then flows to the top of the DEA regenerator as reflux.

Original languageBritish English
Number of pages8
Specialist publicationOil and Gas Journal
StatePublished - 3 Dec 2012


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