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1.3.1. The mechanism of formation and standards for sulfur oxides emissions

  • 1.3.1.1. Formation mechanism of sulfur oxides at organic fuel combustion

    Shmigol I.N., Open JSC “VTI”

    Any organic fuel, except natural gas, contains sulfur as a part of its organic fraction (organic sulfur), or in the form of pyrite FeS2, included in its mineral component.

    Sulfur dioxide and trioxide are produced at oxy-firing of fuel sulfur:

    S + O2 = SO2;

    2FeS2 + 5O2 = 2FeO + 4SO2.

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  • 1.3.1.2. Specifications and sanitary requirements for SO2 content in atmosphere and flue gases

    Shmigol I.N., Open JSC “VTI“

    According to the sanitary-hygienic legislation of Russia in the atmospheric air the following maximum permissible concentrations of sulfur dioxide should be met:

    • maximum one-time concentration (for sampling time of 20 min - 0,5 mg/m3);
    • daily average concentration is 0,05 mg/m3. In the air of working spaces the concentration of sulfur dioxides shouldn’t exceed 10 mg/m3.

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