Increasing energy costs and growing demand for natural gas have driven the development of sour gas fields around the world. About forty percent or 2600 Tcf of the world’s natural gas reserves are in the form of sour gas where H2S and CO2 compositions exceed 10% volumetric of the raw produced acid gas. In some cases, the acid gas composition in these reserves is very high and economics of producing pipe line quality gas are marginal. Natural gas almost always contains contaminates or other unacceptable components, including heavy hydrocarbons, mercaptans, mercury, water and the acid gases H2S and CO2. Conditioning natural gas for pipeline LNG or GTL requires the removal of these undesirable contaminants.

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