Acid Gas

Acid gas is natural gas or any other gas mixture containing significant quantities 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 specifically 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.

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Famous quotes containing the word gas:

    Shielded, what sorts of life are stirring yet:
    Legs lagged like drains, slippers soft as fungus,
    The gas and grate, the old cold sour grey bed.
    Philip Larkin (1922–1986)