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The main purpose of a gas sweetening unit is to reduce the CO2 and H2S levels to
commercially and environmentally acceptable amounts. These gases, frequently
found in natural gas streams, are highly toxic, extremely corrosive, and can
significantly reduce the BTU value of the gas.
Other advantages of using gas sweetening units are:
1. Reduced manufacturing times, and,
2. Reduced hazardous risk to the environment
Gas sweetening units are common process units as used in oil refineries,
petrochemical plants, natural gas processing plants, etc.
Gas sweetening units, (also known as amine treating units), are a processing
unit that removes contaminants from gas, making it environmentally suitable for
transportation and commercial use. The process is referred to as sweetening and
it processes gases so they no longer have the sour, foul odors of mercaptans and
The sweetening process entails mixing the sour gas with an amine solution, which
absorbs the acidic gases later in the process as the mixture is heated and
cooled until the purified and acidic gases are separated.