【摘要】 以甲胺乙醇（MDEA）和哌嗪（PZ）混合物为吸收剂，研究非湿润条件下去除酸性气体CO₂和H₂S的效率。使用COMSOL软件建立的二维稳态的中空纤维膜接触器，考察了气液流速、浓度、孔隙率、膜组件长度等因素对脱除酸性气体的效率的影响。结果表明：MDEA/PZ混合吸收剂的脱除CO₂和H₂S效率较好，MDEA/PZ混合吸收剂脱除CO₂效率明显高于单一MDEA吸收剂脱除CO₂的效率。利用Design Expert响应面分析法观察到5个因素对脱碳率的影响，排序为液体浓度>孔隙率>气体流速>液体流速>组件长度。当MEDA/PZ溶液浓度为3.5 mol·L^-1，气体流速为0.1 m·s^-1，液体流速为0.09 m·s^-1，膜组件长度为0.75 m，孔隙率为50%时，脱除效率最高。更多还原

【Abstract】 The efficiency of removing acidic gases CO₂ and H₂S under non wetting conditions was studied using a mixture of methylamine ethanol（MDEA） and piperazine（PZ） as absorbers. A two-dimensional steady-state hollow fiber membrane contactor was established using COMSOL software to investigate the effects of factors such as gas-liquid flow rate, concentration, porosity, and membrane component length on the efficiency of acid gas removal. The results showed that the MDEA/PZ mixed absorbent had better CO₂ and H₂S removal efficiency, and the CO₂ removal efficiency of the MDEA/PZ mixed absorbent was significantly higher than that of a single MDEA absorbent. Using the Design Expert response surface analysis method and contour plots, four factors affecting decarburization rate were clearly observed, ranked as liquid concentration>porosity>gas flow rate>liquid flow rate>component length. Through analysis, it was found that the removal efficiency is highest when the concentration of MEDA/PZ solution is 3.5 mol·L^-1, gas flow rate is 0.1 m·s^-1, liquid flow rate is 0.09 m·s^-1, membrane component length is 0.75 m, and porosity is 50%.更多还原