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Title: Natural Gas Sweetening
Author: Stephen R. English
Source: 1992 American School of Gas Measurement Technology
Year Published: 1992
Abstract: Sour gas is a term used to describe a gas stream which contains hydrogen sulfide (H2S). Natural gas streams which contain hydrogen sulfide or considerable amounts of carbon dioxide (CO2) are also called acid gases because they form weak acids when combined with water. Hydrten sulfide is highly toxic. It must be removed from natural gas before it can be used as a commercial fuel. It may also be necessary to remove carbon dioxide to meet pipeline quality specifications. The process of removing the acid gas compounds from a gas stream is called sweetening.

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