Comparison on Filtration Performance of Metallic Wire Mesh Filter at Different Temperatures

2nd International Symposium on Application of Materials Science and Energy Materials

材料科学;能源学

Li, Juan^1 ; Wang, Xiaochun^1 ; Liu, Chenggang^1

School of Environmental Science and Engineering, Suzhou University of Science and Technology, Jiangsu, China^1

关键词: Cryogenic temperatures;    Filtration efficiency;    Filtration mechanism;    Filtration performance;    Filtration pressures;    High temperature;    Permeability increase;    Regeneration performance;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/490/5/052033/pdf
DOI  :  10.1088/1757-899X/490/5/052033

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

Metallic wire mesh filter is characterized by corrosion resistance, high strength and plasticity, stability under high pressure difference, favourable regeneration performance and long lifetime, which can be used to purify cryogenic liquid. In order to research its filtration performance at different temperatures and to discuss the filtration mechanism at cryogenic temperature, experiments were carried out to purify liquid nitrogen, and filtration performance was compared with two kinds of wire mesh filter in literatures. Emphasis was laid on the effect of filtration medium. The results show that filtration pressure drop is proportional to fluid speed at cryogenic temperature, which coincides with the condition at atmospheric temperature. However, at the same fluid speed, the higher the temperature, the lower the pressure drop due to thermal expansion and the permeability increase of wire mesh filter medium at high temperature. Furthermore, filtration efficiency increases with filtration speed and such trend is more obvious at later stage at cryogenic temperature, while it is not obvious at high temperature due to the larger porosity of filter cake at high temperature which has no significant effect on filtration efficiency.