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A journey to excellence for Hysweet®: From laboratory to industrial proved applications


Removing mercaptans from sour natural gas is becoming an important issue with the global trend towards more stringent specifications for commercial gases. Amines have been extensively used on account of their ability to meet severe H2S and CO2 specifications and high acid gas selectivity over hydrocarbons. Amines however have limited mercaptans removal capability, an additional treatment step is generally required to achieve stringent specification on total sulfur in the treated gas. For more than 10 years, TOTAL works on the natural gas sweetening process for high sulfur comprising gas. Targeting to unlock the potential value for such a kind of difficult-to-treat gases in a profitable and energy efficient way, TOTAL successfully developed a new series of hybrid solvents technologies, HySWEET®. In 2018, a significant milestone will be achieved after the first HySWEET® process implementation in ADNOC Gas Processing’s Habshan 32/33 units. This paper will present the HySWEET® challenging development pathway and the benefices that can be achieved in both green field and brown field gas processing projects