煤电厂排烟中颗粒物分布特性研究  

Research on the Characteristics of Particulate Matter in Coal-fired Power Plants

作　　者：王巍 崔艳艳 Wang Wei;Cui Yanyan(CHN ENERGY SHENGLI POWER PLANT,Xilinhot,026000)

机构地区：[1]国家能源集团胜利发电厂,锡林浩特026000

出　　处：《制冷与空调（四川）》2024年第5期679-684,共6页Refrigeration and Air Conditioning

摘　　要：通过采集燃煤锅炉静电除尘器进出口的颗粒物,研究了粒径范围为0.03μm~10.0μm颗粒物的浓度、粒径分布、扩散特性以及颗粒物通过静电除尘器的穿透率和颗粒物的元素组成等。实验结果显示,PM10的粒径呈现双峰态分布。燃煤锅炉向大气排放的颗粒物中,PM2.5和PM1的占比较大。当添加石灰石吸附剂用于脱硫时,排放的颗粒物除了燃煤产生的之外,石灰石也产生了新的颗粒物。颗粒物通过静电除尘器的穿透率会随着粒径变化,在粒径0.01~1μm范围内有明显峰值,静电除尘器对粒径小于0.1μm的颗粒物收集效果不佳。PM10中各元素的分布也不相同。This article studied the particle size range of 0.03μm to 10.0μm by collecting particles from the inlet and outlet of electrostatic precipitators in coal-fired boilers.The research content mainly includes the concentration,particle size distribution,diffusion characteristics,as well as the penetration rate of particles through electrostatic precipitators and the elemental composition of particles.The experimental results showed that the particle size of PM10 exhibited a bimodal distribution.PM2.5 and PM1 accounted for a relatively large proportion of particulate matter emitted into the atmosphere by coal-fired boilers.When adding limestone adsorbent for desulfurization,in addition to the particles generated by coal combustion,limestone also produced new particles.The penetration rate of particulate matter through electrostatic precipitators varied with particle size,ranged from 0.01μm to 1μm.The electrostatic precipitator had poor collection effect on particles with a particle size less than 0.1μm.The distribution of each element in PM10 is also different.

关 键 词：燃煤电厂 颗粒物浓度 粒径分布 穿透率 元素分布 

分 类 号：TU5[建筑科学—建筑技术科学]