Amine is the common name for a family of chemicals that includes monoethanolamine (MEA), diethanolamine (DEA), and methyl diethanolamine (MDEA). Amines are used to remove carbon dioxide and hydrogen sulfide from natural gas. Natural gas is exposed to liquid amine in a contactor vessel, where carbon dioxide and hydrogen sulfide are absorbed by the amine. The contaminated amine is pumped to a regenerator where it is heated to remove the carbon dioxide and hydrogen sulfide. The regenerated liquid amine is pumped back to the contactor vessel and the cycle continues.