A Comprehensive Parametric Study on CO2 Removal from Natural Gas by Hollow Fiber Membrane Contactor: A Computational Fluid Dynamics Approach
A Comprehensive Parametric Study on CO2 Removal from Natural Gas by Hollow Fiber Membrane Contactor: A Computational Fluid Dynamics Approach
复制标题
中空纤维膜接触器去除天然气中二氧化碳的综合参数研究：计算流体动力学方法
DOI：
10.1002/ceat.202300504
复制
发表时间：
2024
期刊：
影响因子：
--
通讯作者：
Alamgir Karim
中科院分区：
文献类型：
--
作者：
Mahsa Bagi;Mohammad Vakili Razlighi;Mina Shanbedi;Alamgir Karim
本研究考察了影响中空纤维膜去除CO2效率的主要因素。在模拟中，采用了含有十根纤维的膜的有限元模型。每根光纤长175mm，内半径0.75 mm，外半径1.5 mm。液、气流速设置为100-800 mL min - 1，吸附剂浓度在200-1500 mol m - 3范围内调节单乙醇胺、哌嗪（PZ）和乙二胺吸附剂。增大液体流量、增大气体流量、增大吸附剂浓度分别导致效率增加、降低和增加。因此，以PZ为吸附剂，液浓度为1080 mol m−3，气流量分别为400和180 mL min−1时，膜有效长度为0.3 m， CO2去除率为95%。
This study examined essential factors in the use of hollow fiber membranes that affect CO2 removal efficiency. In the simulation, a finite element model for a membrane with ten fibers was used. Each fiber is 175 mm long with inner radius of 0.75 mm and outer radius of 1.5 mm. Liquid and gas flow rates were set at 100–800 mL min−1, and adsorbent concentration was adjusted in the range of 200–1500 mol m−3 for monoethanolamine, piperazine (PZ), and ethylenediamine absorbents. Increasing the liquid flow rate, gas flow rate, and absorbent concentration leads to an increase, decrease, and increase in efficiency, respectively. Thus, using PZ as absorbent with a concentration of 1080 mol m−3 liquid and gas flow rates of 400 and 180 mL min−1, respectively, showed a CO2 removal efficiency of > 95 % for a membrane effective length of 0.3 m.