Flue gas emission standards

The levels of particulate matter, sulfur dioxide, and nitrogen oxides in smoke emission standards can be calculated on a dry-basis or a wet-basis. Dry basis refers to the pollutant emissions contained in the fuel without any moisture, while wet basis takes into account the effect of the moisture present in the fuel on pollutant emissions. Due to the varying moisture contents in different fuels, using dry-base or wet-base calculations can more accurately reflect the pollutant levels in the flue gases. The converted value is the amount based on a wet basis, expressed as an equivalent value based on a dry basis. This is because the moisture in the wet-base flue gas occupies a portion of the total volume, reducing the proportion of pollutants within it. The wet basis content can be converted to a dry basis content through conversion, in order to more accurately assess the actual emission levels of pollutants. In simple terms, the dry basis represents the amount of pollutants emitted after all moisture in the fuel has been removed, while the wet basis refers to the actual emission amount taking into account the effect of moisture in the fuel. The converted value is then used to transform the wet basis figure into an equivalent dry basis figure. .

Does the converted value refer to the flue gas converted to standard conditions?

Dust, sulfur dioxide, and nitrogen oxides are converted to a dry basis using formulas (with humidity playing a key role in these calculations). The dry basis values are then used together with oxygen to calculate equivalent values; it is these equivalent values of pollutants that determine whether emissions are within acceptable limits.