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.

中文翻译：

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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

本研究探讨了中空纤维膜使用中影响CO ₂去除效率的重要因素。在模拟中，使用了具有十根纤维的膜的有限元模型。每根光纤长 175 毫米，内半径为 0.75 毫米，外半径为 1.5 毫米。对于单乙醇胺、哌嗪（PZ）和乙二胺吸收剂，液体和气体流速设置在100–800 mL min ^{-1 ，吸附剂浓度调整在200–1500 mol m -3}范围内。增加液体流速、气体流速和吸收剂浓度分别导致效率增加、减少和增加。因此，使用PZ作为吸收剂，液体浓度为1080 mol m ^-3，气体流速分别为400和180 mL min ^-1，对于0.3 m的膜有效长度，显示出> 95 %的CO _{2去除效率。}