抄録
A detailed analysis of major pollutants (NOx, SOx, CO2, and PM) emitted from the 2, 625-MW Mae Moh power plant firing Thai lignite was carried out for the “average” fuel composition taking into consideration actual loading of the power plant boilers over a particular year. The emission concentration of NOx (as NO2) in flue gas leaving the boilers was predicted based on the fuel properties, operating conditions and boiler furnace geometry. The rate of SOx (as SO2) penetrating into the atmospheric environment was estimated taking into account the sulfur content in fuel together with the effects of absorption of sulfur dioxide by fly ash and also efficiency of the flue gas desulfurization (FGD) units. The emission models for the acid rain gases were validated by special experimental tests conducted on a 150-MW unit. Specific emissions (per MWh of power production) for the major pollutants were estimated for distinct power plant units. Annual rates for the pollutants of interest discharged from the power plant were quantified for the period of 1998-2002.
