Emission Characteristics and Control Prospects of Primary PM_(2.5) from Fossil Fuel Power Plants in China

Yan Wang ； Ke Cheng ； He-Zhong Tian ； Peng Yi ； Zhi-Gang Xue

《Aerosol and Air Quality Research》 16卷12期 (2016/12) Pp. 3290-3301

https://doi.org/10.4209/aaqr.2016.07.0324

摘要

In this study, a unit-based approach was used to establish an integrated emission inventory of primary PM_(2.5) from fossil fuel (coal, oil, and natural gas) power plants in China. The inventory was of high spatial and temporal resolution, and composed of detailed chemical speciation. In 2014, the total emissions were estimated to be approximately 669.53 kt. The emissions of primary PM_(2.5) from coal-fired power plants (CFPs) were 668.56 kt, making CFPs the largest contributor. The emissions of primary PM_(2.5) from oil-fired power plants (OFPs) and natural gas-fired power plants (GFPs) were approximately 17.41 t and 945.60 t, respectively. Spatial distribution features demonstrated that the emissions in the eastern and central provinces of China were much higher than those in the west, except for provinces involved in the ＂west-to-east power transmission＂ project. For CFPs, crustal elements and water-soluble inorganic ions were the primary species of PM_(2.5). By contrast, for OFPs and GFPs, carbonaceous components were the predominant species of PM_(2.5). Moreover, this study conducted a scenario analysis of changes in PM_(2.5) emissions resulting from technical advancement, penetration, and substitution of CFPs by GFPs for the target years.

關鍵字

PM_(2.5) emission ； Unit-based approach ； Chemical composition ； Scenario projection