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Encyclopedia > Acid gas

Acid gas is natural gas or any other gas mixture which contains significant amounts of hydrogen sulfide (H2S), carbon dioxide (CO2), or similar contaminants. The terms acid gas and sour gas are often incorrectly treated as synonyms. Strictly speaking, a sour gas is any gas that contains hydrogen sulfide in significant amounts; an acid gas is any gas that contains significant amounts of acidic gases such as carbon dioxide (CO2) or hydrogen sulfide. Thus, carbon dioxide by itself is an acid gas but not a sour gas. This article is about the fossil fuel. ... Hydrogen sulfide (hydrogen sulphide in British English) is the chemical compound with the formula H2S. This colorless, toxic and flammable gas is responsible for the foul odor of rotten eggs and flatulence. ... Carbon dioxide is a chemical compound composed of two oxygen atoms covalently bonded to a single carbon atom. ... Acid gas or Sour gas, also sour acid gas or acid sour gas, is natural gas which contains up to 20% hydrogen sulfide contaminant by weight and the aromatic hydrocarbons benzene, toluene, mixed xylenes and ethylbenzene. ... For alternative meanings see acid (disambiguation). ... Carbon dioxide is a chemical compound composed of two oxygen atoms covalently bonded to a single carbon atom. ...


Before a raw natural gas containing hydrogen sulfide and/or carbon dioxide can be used, the raw gas must be treated to reduce impurities to acceptable levels and this is commonly done with an amine gas treating process.[1][2] The removed H2S is most often subsequently converted to by-product elemental sulfur in a Claus process. Amine gas treating is a means to remove organosulfur and other undesirable compounds from acid gas by contacting the gas with amine. ... This article is about the chemical element. ... This article needs to be cleaned up to conform to a higher standard of quality. ...


Processes within oil refineries or natural gas processing plants that remove mercaptans and/or hydrogen sulfide are commonly referred to as sweetening processes because they result in products which no longer have the sour, foul odors of mercaptans and hydrogen sulfide. In chemistry, thiols (formerly known as mercaptans) are those compounds which contain the thiol group -SH attached to a carbon atom. ... In chemistry, thiols (formerly known as mercaptans) are those compounds which contain the thiol group -SH attached to a carbon atom. ...


Hydrogen sulfide is a toxic gas. It also restricts the materials that can be used for piping and other equipment for handling sour gas, as many metals are sensitive to sulfide stress cracking. Hydrogen sulfide (hydrogen sulphide in British English) is the chemical compound with the formula H2S. This colorless, toxic and flammable gas is responsible for the foul odor of rotten eggs and flatulence. ... Piping is used to convey fluids (usually liquids and gases but sometimes loose solids) from one location to another. ... Sulphide stress cracking (SSC), or sulphide stress corrosion cracking (SSCC), is a special corrosion type, a form of stress corrosion cracking. ...


See also

Acid gas or Sour gas, also sour acid gas or acid sour gas, is natural gas which contains up to 20% hydrogen sulfide contaminant by weight and the aromatic hydrocarbons benzene, toluene, mixed xylenes and ethylbenzene. ... A natural gas processing plant Natural gas processing plants are used to purify the raw natural gas extracted from underground gas fields and brought up to the surface by gas wells. ... View of Shell Oil Refinery in Martinez, California. ... Rectisol is the trade name for an acid gas removal process that uses methanol as a solvent to separate acid gases such as hydrogen sulfide and carbon dioxide from valuable feed gas streams. ... Selexol is the trade name for an acid gas removal solvent that can separate acid gases such as hydrogen sulfide and carbon dioxide from feed gas streams such as synthesis gas produced by gasification of coal, coke, or heavy hydrocarbon oils. ...

References

  1. ^ NaturalGas.org website page Processing Natural Gas
  2. ^ Energy Information Agency website page Natural Gas Processing: The Crucial Link Between Natural Gas Production and Its Transportation to Market

  Results from FactBites:
 
Acid Gas Removal Systems: Carbon-dioxide-equipment.com: Carbon dioxide equipment, carbon dioxide (CO2) generators and ... (1240 words)
Typically, a stack gas system employs a patented solvent to recover CO2 from exhaust streams emanating from a boiler, an engine, a turbine, etc. The common characteristic is that the exhaust has from one to fifteen percent (1%-15%) oxygen in the exhaust stream.
Gas treating is the absorption of acid gases such as carbon dioxide and hydrogen sulfide from natural gas, synthesis gas, refinery tail gas, and flue gas.
The most important raw gas condition is the acid gas partial pressure (mole fraction of acid gas times the total pressure, usually expressed in mm Hg).
Acid Gas Removal Systems: Carbon-dioxide-equipment.com: Carbon dioxide equipment, carbon dioxide (CO2) generators and ... (1240 words)
Typically, a stack gas system employs a patented solvent to recover CO2 from exhaust streams emanating from a boiler, an engine, a turbine, etc. The common characteristic is that the exhaust has from one to fifteen percent (1%-15%) oxygen in the exhaust stream.
Gas treating is the absorption of acid gases such as carbon dioxide and hydrogen sulfide from natural gas, synthesis gas, refinery tail gas, and flue gas.
The most important raw gas condition is the acid gas partial pressure (mole fraction of acid gas times the total pressure, usually expressed in mm Hg).
  More results at FactBites »

 
 

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