CAJ | 학술논문

相对于传统的脱碳方法，中空纤维膜脱除烟气中CO 2是一种清洁、高效的技术方法。运用有限单元法建立了一个疏水性中空纤维膜脱除烟气中CO 2的二维模型，考察了膜丝直径、壁厚、孔隙率、曲折因子、纤维膜根数、膜柱内径和长度等方面对CO 2脱除率的影响，模型结果与实验值相符。结果表明四种吸收剂的脱除率从大到小依次为EDA>MEA>DEA>AMP。当液速为0.1 m·s–1、气速0.211 m·s–1、操作压力为0.1 MPa时，减小曲折因子、膜丝壁厚和膜柱内径，增大孔隙率、膜丝内径与膜柱长度都有利于膜吸收CO 2。
상대우전통적탈탄방법，중공섬유막탈제연기중CO 2시일충청길、고효적기술방법。운용유한단원법건립료일개소수성중공섬유막탈제연기중CO 2적이유모형，고찰료막사직경、벽후、공극솔、곡절인자、섬유막근수、막주내경화장도등방면대CO 2탈제솔적영향，모형결과여실험치상부。결과표명사충흡수제적탈제솔종대도소의차위EDA>MEA>DEA>AMP。당액속위0.1 m·s–1、기속0.211 m·s–1、조작압력위0.1 MPa시，감소곡절인자、막사벽후화막주내경，증대공극솔、막사내경여막주장도도유리우막흡수CO 2。
Compared with traditional CO2 separation methods, the absorption of CO2 in flue gas with hollow fiber membrane is a clean and efficient decarbonization technology. This paper used the finite element method and established a 2D model of hydrophobic hollow fiber membrane for the removal of CO2 in flue gas. The CO2-removal efficiency was investigated from the membrane diameter, thickness, porosity, tortuosity, the number of fibers, membrane column diameter and length. The modeling results are consistent with the experimental values. The results show that the sequence of absorption efficiency of four absorbents is EDA>MEA>DEA>AMP. Decreasing the tortuosity, thickness, and column diameter, or increasing the porosity, fiber diameter, and membrane length, is beneficial to the membrane absorption of CO2under the conditions of 0.1 m·s–1liquid velocity, 0.211 m·s–1gas velocity and 0.1 MPa operation pressure.