Amine processes outperform in sweetening LNG plant feed

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

Amine processes outperform in sweetening LNG plant feed

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

Mechanical & Nuclear Engineering

Bryan Research and Engineering Inc.

Research output: Contribution to specialist publication › Article

4 Scopus citations

Abstract

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 language	British English
Pages	108-115
Number of pages	8
Volume	110
No	12
Specialist publication	Oil and Gas Journal
State	Published - 3 Dec 2012

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AB - 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.

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Amine processes outperform in sweetening LNG plant feed

Abstract

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