title: Nitrogen oxides emissions from thermal power plants in china: current status and future predictions.
abstract: Increasing emissions of nitrogen oxides (NOx) over the Chinese mainland have been of great concern due to their adverse impacts on regional air quality and public health. To explore and obtain the temporal and spatial characteristics of NOx emissions from thermal power plants in China, a unit-based method is developed. The method assesses NOx emissions based on detailed information on unit capacity, boiler and burner patterns, feed fuel types, emission control technologies, and geographical locations. The national total NOx emissions in 2010 are estimated at 7801.6 kt, of which 5495.8 kt is released from coal-fired power plant units of considerable size between 300 and 1000 MW. The top provincial emitter is Shandong where plants are densely concentrated. The average NOx-intensity is estimated at 2.28 g/kWh, markedly higher than that of developed countries, mainly owing to the inadequate application of high-efficiency denitrification devices such as selective catalytic reduction (SCR). Future NOx emissions are predicted by applying scenario analysis, indicating that a reduction of about 40% by the year 2020 can be achieved compared with emissions in 2010. These results suggest that NOx emissions from Chinese thermal power plants could be substantially mitigated within 10 years if reasonable control measures were implemented effectively.
authors.affiliation: State Key Joint Laboratory of Environmental Simulation and Pollution Control, School of Environment, Beijing Normal University , Beijing 100875, China.
authors.forename: Hezhong
authors.initials: H
authors.lastname: Tian
authors.forename: Kaiyun
authors.initials: K
authors.lastname: Liu
authors.forename: Jiming
authors.initials: J
authors.lastname: Hao
authors.forename: Yan
authors.initials: Y
authors.lastname: Wang
authors.forename: Jiajia
authors.initials: J
authors.lastname: Gao
authors.forename: Peipei
authors.initials: P
authors.lastname: Qiu
authors.forename: Chuanyong
authors.initials: C
authors.lastname: Zhu
mesh_terms: D000393:Air Pollutants / Q000032:analysis*; D002681:China; D004784:Environmental Monitoring; D009589:Nitrogen Oxides / Q000032:analysis*; D011210:Power Plants
chemical_list: D000393:Air Pollutants; D009589:Nitrogen Oxides