【作者】 张志强； 齐福刚； 赵镍； 吴传平； 胡建平； 祝文军； 欧阳晓平；

【Author】 Zhang Zhiqiang;Qi Fugang;Zhao Nie;Wu Chuanping;Hu Jianping;Zhu Wenjun;Ouyang Xiaoping;State Key Laboratory of Disaster Prevention and Reduction for Power Grid Transmission and Distribution Equipment;School of Materials Science and Engineering,Xiangtan University;Laboratory of Shock Wave and Detonation Physics,Institute of Fluid Physics;

【机构】 电网输变电设备防灾减灾国家重点实验室； 湘潭大学材料科学与工程学院； 中国工程物理研究院流体物理研究所冲击波物理与爆轰物理重点实验室；

【摘要】 针对PM₁₀的特点,提出利用气液两相流喷雾沉降雾霾中的PM₁₀新思路,即模拟自然界湿沉降过程,利用与PM₁₀粒径相当的细液滴捕捉PM₁₀。为了研究可行性及沉降效果,在人工气候室模拟了雾霾环境(湿度保持在90%以上,PM₁₀浓度保持在800～900μg/m³),采用自行设计的气液两相流喷雾系统进行实验研究。结果表明:利用气液两相流喷雾系统产生的液滴（粒径<15μm）使环境湿度迅速饱和,PM₁₀通过液滴的捕集、凝聚等多种动力学作用被快速沉降,沉降后的PM₁₀浓度稳定在150μg/m³,沉降效率可达80%。更多还原

【Abstract】 According to the characteristics of PM₁₀,a new idea of using gas-liquid two-phase flow spray to deposit PM₁₀ in the fog and haze environment was put forward, that was to capture PM₁₀ by using fine droplets as the same size as PM₁₀ during the simulation of wet deposition in nature. In order to study the feasibility and sedimentation effect, the fog and haze environment was simulated in the artificial climate room, that is, the humidity kept above 90% and the concentration of PM₁₀ kept between800 μg/m3 and 900 μg/m3. And the self-designed gas-liquid two-phase flow spray system was used for experimental study. The results showed that the droplets with particle size less than 15 μm produced by the gas-liquid two-phase flow spray system made the ambient humidity rapidly saturated, and the PM₁₀ particles were rapidly deposited through the collection and condensation of the droplets. After deposition test, the concentration of PM₁₀ was stable at 150 μg/m3, and the deposition efficiency could reach 80%.更多还原