化工学报Issue(6)：2137-2147,11.DOI:10.3969/j.issn.0438-1157.2014.06.026
纤维对PM2.5过滤性能的影响
Influence of fiber on filtration performance for PM2.5
摘要
Abstract
With the rapid development of industrialization, a large number of toxic residues of PM2.5 are produced in the daily life. Due to its slow settling velocity and large quantity and surface area, PM2.5 is a carrier of pollutants and damages the respiratory function of body. It is important to study how to effectively remove PM2.5 in industrial production and daily life. The filtration performance of fibers with different sizes of Y-shaped and circular section is examined in this study, and the relation of particle retention to smoke speed and particle concentration is analyzed. The influence of density and porosity of fiber assembly on the filtration performance of PM2.5 is studied. Fiber and fiber assembly are simulated with Euler method and Lagrange method, and the numerical results are in good agreement with experimental data. The results on Y-shaped fiber show that higher linear density of fiber retains less particles at the same smoke speed and concentration, higher particle concentration leads to higher particle retention at the same linear density and speed, and higher speed of smoke gas gives higher particle retention at the same linear density and concentration. The retention with Y-shaped fiber section is better than that with circular section. The results on fiber assembly show that higher linear density of fiber improves the particle retention at the same porosity and larger porosity reduces the retention at the same linear density of fiber. The performance for PM2.5 filtration is better at linear density of fiber of 0.27 tex and fiber assembly porosity of 0.88.关键词
单纤维丝/纤维集合体/模型/表面/PM2.5/模拟/过滤性能Key words
fiber/fiber assembly/model/surface/PM2.5/simulation/filtration performance分类
资源环境引用本文复制引用
顾丛汇,吕士武,李瑞,鲁端峰,务文涛,袁竹林..纤维对PM2.5过滤性能的影响[J].化工学报,2014,(6):2137-2147,11.基金项目
国家自然科学基金项目（51106183）；中国烟草总公司郑州烟草研究院烟草工艺重点实验室基金项目。@@@@supported by the National Natural Science Foundation of China (51106183) and the Key Laboratory of Tobacco Processing Technology of Zhengzhou Tobacco Research Institute of China National Tobacco Corporation （51106183）
