The document discusses sour gas treatment using amine gas treating. Amine gas treating refers to processes that use aqueous amine solutions to remove hydrogen sulfide and carbon dioxide from sour gas streams. Key amines used include monoethanolamine, diethanolamine, diisopropanolamine, and methyldiethanolamine. The process works by absorption of acid gases into the amine solution, followed by stripping of the gases out using a vapor stream.