Nature protection technologies

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

Part 1. AIR PROTECTION FROM POWER INDUSTRY EMISSIONS

1.3. Sulfur oxide emission reduction

1.3.1. Formation mechanism and standards for sulfur oxide 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.

Part 1. AIR PROTECTION FROM POWER INDUSTRY EMISSIONS

1.3. Sulfur oxide emission reduction

1.3.1. Formation mechanism and standards for sulfur oxide emissions

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.