Temporal trends and spatial variation characteristics of primary air pollutants emissions from coal-fired industrial boilers in Beijing, China
Temporal trends and spatial variation characteristics of primary air pollutants emissions from coal-fired industrial boilers in Beijing, China
复制标题
北京市燃煤工业锅炉一次大气污染物排放时间变化趋势及空间变化特征
DOI：
10.1016/j.envpol.2016.03.047
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发表时间：
2016
影响因子：
8.9
通讯作者：
Wu Xiaoqing
中科院分区：
文献类型：
--
作者：
Xue Yifeng;Tian Hezhong;Yan Jing;Zhou Zhen;Wang Junling;Nie Lei;Pan Tao;Zhou Junrui;Hua Shenbing;Wang Yong;Wu Xiaoqing
燃煤燃烧被认为是北京大气化合物的重要人为来源，导致严重的空气污染事件和相关的能见度下降。准确了解燃煤工业燃烧排放的时间趋势和空间变化特征，对于预测空气质量变化和评估现有控制措施的有效性至关重要。本研究采用基于技术的方法，编制了2007-2013年北京市燃煤工业锅炉主要大气污染物综合排放清单。根据当前的能源相关和排放控制政策，预测到2030年的未来排放趋势。我们的分析表明，由于实施了更严格的地方排放标准，以及北京市政府推动燃煤工业锅炉改用燃气锅炉，主要空气污染物排放量总体呈下降趋势。然而，工业锅炉消耗的煤炭占煤炭消费总量的比例一直在上升，这引发了人们对北京空气质量进一步改善的担忧。我们的估算表明，2013年北京燃煤工业锅炉PM10、PM2.5、SO2、NOx、CO和VOCs的总排放量分别约为19,242吨、13,345吨、26,615吨、22,965吨、63,779吨和1406吨。根据目前的环境政策和相关的节能减排计划，如果实施先进的烟气净化技术，并在大部分现有锅炉中用天然气取代煤炭，到2030年，NOx和其他空气污染物的排放量可能分别减少94%和90%。
Coal-fired combustion is recognized as a significant anthropogenic source of atmospheric compounds in Beijing, causing heavy air pollution events and associated deterioration in visibility. Obtaining an accurate understanding of the temporal trends and spatial variation characteristics of emissions from coal-fired industrial combustion is essential for predicting air quality changes and evaluating the effectiveness of current control measures. In this study, an integrated emission inventory of primary air pollutants emitted from coal-fired industrial boilers in Beijing is developed for the period of 2007–2013 using a technology-based approach. Future emission trends are projected through 2030 based on current energy-related and emission control policies. Our analysis shows that there is a general downward trend in primary air pollutants emissions because of the implementation of stricter local emission standards and the promotion by the Beijing municipal government of converting from coal-fired industrial boilers to gas-fired boilers. However, the ratio of coal consumed by industrial boilers to total coal consumption has been increasing, raising concerns about the further improvement of air quality in Beijing. Our estimates indicate that the total emissions of PM10, PM2.5, SO2, NOx, CO and VOCs from coal-fired industrial boilers in Beijing in 2013 are approximately 19,242 t, 13,345 t, 26,615 t, 22,965 t, 63,779 t and 1406 t, respectively. Under the current environmental policies and relevant energy savings and emission control plans, it may be possible to reduce NOxand other air pollutant emissions by 94% and 90% by 2030, respectively, if advanced flue gas purification technologies are implemented and coal is replaced with natural gas in the majority of existing boilers.