中空纤维膜接触器去除室内CO_(2)的流动及传质数值模拟  

Numerical Simulation of Flow and Mass Transfer in Removing Indoor CO_(2) Using Hollow Fiber Membrane Contactor

作　　者：徐志强 张立志[1,2] XU Zhiqiang;ZHANG Lizhi(Key Laboratory of Enhanced Heat Transfer and Energy Conservation of Education Ministry,School of Chemistry and Chemical Engineering,South China University of Technology,Guangzhou 510640,China;State Key Laboratory of Subtropical Building and City Science,South China University of Technology,Guangzhou 510640,China)

机构地区：[1]华南理工大学化学与化工学院传热强化与过程节能教育部重点实验室,广州510640 [2]华南理工大学亚热带建筑与城市科学国家重点实验室,广州510640

出　　处：《工程热物理学报》2025年第1期183-192,共10页Journal of Engineering Thermophysics

基　　金：国家自然科学基金资助项目(No.51936005)。

摘　　要：本研究对中空纤维膜接触器(HFMC)去除室内二氧化碳的流动及传质过程进行了数值研究。在中空纤维膜接触器中,吸收液(赖氨酸钾溶液)在纤维束内流动,而空气在外壳一侧流动。中空纤维膜接触器由纵向和横向间距相等的交错圆柱形纤维管组成。本研究采用计算流体力学方法,系统地研究了空气和吸收液体在中空纤维膜接触器内的流动和传质过程。经过实验验证后,该模型用于计算壳体侧各种运行条件下的摩擦因子和舍伍德数。此外,还提出了预测摩擦因子和舍伍德数的新相关系数。这项工作对于优化膜组件设计工作具有重要意义。In this study,the process of CO_(2) removal by a hollow fiber membrane contactor(HFMC)is investigated numerically.In the HFMC,the absorbent solution(potassium lysine solution)flows through the fiber bundle,while the air flows on the shell side.The hollow fiber membrane contactor consists of staggered cylindrical fiber tubes with equal longitudinal and horizontal pitches.This study investigates the flow and mass transfer process of air and absorbing liquid inside the HFMC systematically by computational fluid dynamics methodology.After experimental validation,the model is used to calculate the friction factors and Sherwood numbers for various operating conditions on the shell side.Besides,the new correlations for predicting friction factor and Sherwood number are proposed as reference to the designs of membrane modules.This work is crucial for simplifying performance evaluation and scale-up design for the membrane module.

关 键 词：中空纤维膜 二氧化碳 质量传递 

分 类 号：TK1[动力工程及工程热物理—热能工程]