The Carbon Intensity Evaluation of Coal-fired Power Plants

The global carbon dioxide emissions gradually increase in the last few decades, among which the coal-fired power plants play magnificent role. Hence the carbon balance theory is in utilization to establish the carbon emission model for combustion and desulfurization processes. In addition, the emission intensity per fuel, per capacity and hourly emission of two super critical units is calculated to evaluate the emission performance. Then the combustion factor, fuel carbon coefficient and emission factor are introduced to specifically analyze the influence element for emission process. The results show that diesel combustion and limestone-gypsum wet desulfurization process carbon emission accounts for less than 1 percent of total emissions. Moreover, the fuel carbon coefficient has more significant effect on emission factor with unburned carbon content exceeds 1 percent. Finally, the emission intensity data is discussed in details.