过滤(数学)
膜污染
结垢
膜
错流过滤
微滤
化学
工作(物理)
粒子(生态学)
滤饼过滤器
色谱法
膜技术
机械
化学工程
材料科学
热力学
物理
工程类
生物化学
统计
数学
海洋学
地质学
作者
Liang Hu,Xin Feng,Yuanyuan Hui,Jie Chen,Jinfan Liu,Zheng Li,Chao Yang,Wanqin Jin
标识
DOI:10.1021/acs.iecr.3c00405
摘要
Stirred membrane reactors allow for catalyst recycling and product separation. However, membrane fouling becomes a major problem limiting such reactors. In this work, the dynamic process and mechanism of constant pressure filtration membrane fouling were investigated through experiments combined with computational fluid dynamics (CFD) simulation. The results show that according to the Hermia model, the filtration model at the high shear position is the cake filtration model, and the filtration model at the low shear position is the combined filtration model due to the different particle accumulation speeds. Second, the stronger the shear rate or the lower the transmembrane pressure, the easier it is for the filtration system to stabilize. However, the smaller the porosity ε, the larger the fraction of small particles in the filter cake. Finally, this work explains the mechanism of membrane fouling from the changes in particle radial velocity and acceleration at the micro level.
科研通智能强力驱动
Strongly Powered by AbleSci AI