Composite fibrous filters for nano-aerosol filtration: Pressure drop and efficiency model

被引：38

作者：

Thomas, D. ^{[1
]}

Pacault, S. ^{[1
]}

Charvet, A. ^{[1
]}

Bardin-Monnier, N. ^{[1
]}

Appert-Collin, J. -C. ^{[1
]}

机构：

[1] Univ Lorraine, LRGP, CNRS, F-54000 Nancy, France

来源：

SEPARATION AND PURIFICATION TECHNOLOGY | 2019年 / 215卷

关键词：

Nanoparticle; Pressure drop; Efficiency; Modeling; Clogging; Fibrous filters; Composite fibrous filters; HEPA FILTERS; MEDIA; NANOPARTICLES; SIMULATION; DEPTH;

D O I：

10.1016/j.seppur.2019.01.043

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

A model was developed to predict the behavior of non-woven filters clogged during the filtration of nanostructured particles (i.e. agglomerates of nanometric particles). It estimates the evolution of the pressure drop and the collection efficiency during particle loading. It takes into account the filter characteristics (thickness, packing density, Davies diameter and mean fiber diameter), the particle-size distribution and the operating conditions (filtration velocity, temperature...). Only one adjustable parameter (beta(o)) is needed, which ranges from 0.7 to 1 times the ratio of the mean fiber diameter and the Davies' diameter of the clean filter. In comparison with experimental data, the model allows satisfactorily predicting the performances (pressure drop and efficiency) of several mono or dual layer fibrous filters during particle loading.

引用

页码：557 / 564

页数：8

共 31 条

[1] Particle deposition and layer formation at the crossflow microfiltration [J].