[Atmospheric Emission Inventory Establishment and Emission Reduction Potential Analysis of Coal-fired Units in Shanxi...

To mitigate climate change and achieve clean and efficient development in the power sector， it is imperative to vigorously advance pollution and carbon reduction in coal-fired power plants. By incorporating online monitoring data， this study constructs an atmospheric emission inventory for coal-fired units in Shanxi Province for the year 2020 and evaluates their environmental efficiency and emission reduction potential using the SBM-DDF model. The results indicate that： ① In 2020， the emission concentrations of SO₂， NO_x， and PM from coal-fired units in Shanxi Province ranged from 1.73-28.22， 3.11-43.57， and 0.78-7.39 mg·m^-3， respectively， already meeting ultra-low emission standards. The total emissions of CO₂， SO₂， NO_x， and PM were 27 074.21×10⁴， 2.12×10⁴， 5.34×10⁴， and 0.43×10⁴ tons， respectively. ② The average environmental efficiency of coal-fired units in Shanxi Province was 0.71， with reduction potentials for CO₂， SO₂， NO_x， and PM amounting to 11 190.35×10⁴， 1.26×10⁴， 3.22×10⁴， and 0.25×10⁴ tons， respectively. This indicates synergistic benefits in pollution and carbon reduction， albeit at a relatively low level of synergy. ③ Incorporating the heat supply indicator into the input-output framework reduced the environmental efficiency of coal-fired units， suggesting current inefficiencies in combined heat and power operation. ④ From the perspectives of installed capacity and boiler type， smaller units and pulverized coal boiler units exhibited greater potential for pollutant emission reduction.