July 2018

Bonus Report: LNG Technology

Selecting amines for AGR facilities impacts LNG plant capacity

Alkanolamines have been used for acid gas removal from natural gas for several decades.

Hwang K., Zachry Engineering Corp.

Alkanolamines have been used for acid gas removal from natural gas for several decades. Since the 1980s, numerous efforts to determine the amine that is best suited to a particular service have been reported, as several amine sweetening units that were operating inefficiently were optimized by simply changing the amines. In the design of amine sweetening units, the major concern is that the sweetened gas meets the required purity specifications with respect to hydrogen sulfide (H2S) and carbon dioxide (CO2). The secondary objective is to select the amine that optimizes equipment size and minimizes plant operating costs. However, environmental issues associated with vent gas from the amine r

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