为分析北京市燃煤源排放控制措施的污染物减排效益,基于MEIC(中国多尺度排放清单模型),采用情景分析法,评估了北京市电厂能源清洁化与末端治理、燃煤锅炉改造和城区平房区居民采暖改造等措施的污染物减排效益.结果表明,相对于无控情景,2013年北京市电厂能源清洁化与末端治理减少PM2.5、PM10、SO2和NOx排放量为1.28×10^4、2.10×10^4、5.13×10^4和4.98×10^4t,分别占无控情景的85%、86%、87%、74%;北京市燃煤锅炉改造减少PM2.5、PM10、SO2、NOx排放量为1.09×10^4、2.68×10^4、11.64×10^4和5.81×10^4t,分别占无煤改气情景的83%、89%、83%、83%;北京市老旧平房区的居民采暖改造减少PM2.5、PM10、SO2和NOx排放量分别为630、870、2 070和790 t,均占无煤改电情景的8%.研究显示,北京市从1998年开始采取的各种减排措施有效地减少了污染物的排放,对北京市空气质量改善具有重要意义.
To analyze the benefits of emission reductions from coal-fired source emission control measures,this work employed scenario analysis to quantify emission reductions from replacing coal-fired power with clean energy and application of end-of-pipe control technologies in power plants,comprehensive control on coal-fired boilers and residential heating renovation based on the model of Multiresolution Emission Inventory for China( MEIC). The results showed that the emissions of PM2.5,PM10,SO2 and NOx from power plants in Beijing were estimated to have been reduced 1. 28 × 10^4,2. 10 × 10^4,5. 13 × 10^4 and 4. 98 × 10^4 t in 2013,representing reductions of85%,86%,87% and 74%,respectively. 1. 09 × 10^4,2. 68 × 10^4,11. 64 × 10^4 and 5. 81 × 10^4 t of PM2.5,PM10,SO2 and NOx emissions were mitigated due to the comprehensive control measures for coal-fired boilers in 2013,representing reductions of 83%,89%,83% and 83%,respectively. Residential heating renovation projects by replacing coal with electricity in Beijing's conventional old house areas contributed to emission reductions of 630,870,2070 and 790 t for PM2.5,PM10,SO2 and NOx,representing reductions of 8%.The study showed that the emission reduction measures have reduced pollutant emissions effectively since 1998 and have significance for improving air quality in Beijing.