京津冀地区火电行业排放特征及其对空气质量的影响研究

发布时间：2017-12-26 22:04

  本文关键词：京津冀地区火电行业排放特征及其对空气质量的影响研究　出处：《浙江大学》2016年硕士论文　论文类型：学位论文

  更多相关文章： 燃煤电厂 大气污染 京津冀地区 CALPUFF

【摘要】：近年来,我国以京津冀地区为代表的经济发达地区灰霾天气频发。随着电力需求的逐年增加,京津冀火电行业煤耗逐年上升,所排放的污染物是造成京津冀地区大气污染的重要因素。因此,研究京津冀地区火电行业污染物的排放特征及其对大气污染的贡献,可以为火电机组进行结构调整、节能减排以及进行大气污染防治工作提供理论基础。本文基于2013年京津冀地区火电机组大气污染物排放清单,对京津冀地区燃煤电厂空间分布、装机结构、各污染物排放等特征进行分析;采用WRF-CALPUFF模式模拟并分析了 2013年京津冀地区的灰霾污染特征及其影响因素;评估了各季节火电排放对京津冀地区污染物浓度的贡献;预测了火电机组进行结构调整及执行不同的污染物排放限值后灰霾污染的改善程度。研究表明,京津冀地区火电装机受地形影响分布较为集中,天津、石家庄、唐山、邯郸4市的装机台数、装机容量、煤耗量、各污染物排放量的加和分别超过了京津冀总量的50%,单位发电标煤耗、污染物排放浓度与装机容量分布呈反向关系。2013年京津冀地区PM2.5浓度时空分布主要受地形及气象要素影响,重污染区域主要集中在临太行山及燕山山脉的平原地区。2013年京津冀火电排放对平原地区的PM2.5浓度贡献值要高于山区区域,对山区的PM2.5浓度贡献率却要高于平原地区,整个模拟时段火电排放对北京市城区PM2.5浓度的平均贡献率为12.1%。火电机组分别执行特别排放限值及超低排放的污染物排放限值后,京津冀地区PM2.5浓度下降较为明显,且污染越严重的区域其下降幅度越大,整个模拟时段火电排放对北京市城区PM2.5浓度的平均贡献率分别下降到了 7.25%与5.93%。
[Abstract]:In recent years, frequent in Beijing Tianjin Hebei region as the representative of the developed area of our country haze. With the increase of electricity demand year by year, coal consumption in Beijing, Tianjin and Hebei thermal power industry has increased year by year. The pollutants emitted are the important factors that cause atmospheric pollution in Beijing, Tianjin and Hebei. Therefore, the study of pollutant emission characteristics and contribution to air pollution in thermal power industry of Beijing Tianjin Hebei region can provide theoretical basis for structural adjustment, energy saving and emission reduction and air pollution prevention and control for thermal power units. The atmospheric pollutant emission inventory in 2013 in Beijing Tianjin Hebei region based on thermal power units in coal-fired power plants, space distribution, the Beijing Tianjin Hebei region installed structure, pollutant emission characteristics were analyzed; simulation and analysis of haze pollution in 2013 of the Beijing Tianjin Hebei region and its influence factors staining feature using WRF-CALPUFF model; assessment of seasonal thermal power emission of pollutant concentration of Beijing and Tianjin Hebei contribution; prediction of thermal power units to carry out structural adjustment and implementation of different pollutant emission limit to improve the degree of haze pollution value. Research shows that the thermal power installed in Beijing Tianjin Hebei region affected by terrain distribution is more concentrated, Tianjin, Shijiazhuang, Tangshan, Handan City, 4 units, installed capacity, coal consumption, emissions of pollutants and more than 50% of the total units of Beijing Tianjin Hebei, power generation standard coal consumption, pollutant concentration and installed the inverse of the volume distribution. In 2013, the temporal and spatial distribution of PM2.5 concentration in Beijing Tianjin Hebei region was mainly affected by topography and meteorological factors. Heavy pollution areas were mainly concentrated in plain areas which were in Taihang Mountain and Yanshan mountains. In 2013, the contribution of Beijing Tianjin Hebei thermal power to PM2.5 concentration in plain area was higher than that in mountain area. The contribution rate to PM2.5 concentration in mountainous area was higher than that in plain area. The average contribution rate of thermal power discharge to PM2.5 concentration in Beijing city was 12.1% during the whole simulation period. Thermal power units are the implementation of the special emission limits and ultra low emission emission limits, the concentration of PM2.5 in Beijing Tianjin Hebei region decreased obviously, and the more serious the pollution of the area decreased, the average contribution of thermal emission simulation period in Beijing city PM2.5 concentration rate decreased to 7.25% and 5.93%.
【学位授予单位】：浙江大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：X51;X773

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