The carbon dioxide (CO₂) capture potential of amine blends, formed by mixing N,N-Diethylethanolamine (DEEA) and piperazine (PZ), were estimated using an improved rapid screening method. Absorption and desorption experiments were carried out at 313.15 K and 353.15 K to determine the absorption rate, cyclic CO₂ capacity and regeneration rate for 2 mol/L DEEA/PZ with molar ratios of 2.00:0.00, 1.50:0.50, 1.00:1.00, 0.75:1.25, 0.50:1.50, 0.25:1.75 and 0.00:2.00. Solvent screening experimental results showed that blended DEEA/PZ solution with molar ratio of 1.50:0.50 exhibited the higher CO₂ absorption rate and desorption rate, thereby yielding the highest cyclic CO₂ capacity of 0.8540 mol CO₂/L. In addition, the experimental results also showed synergistic effects during CO₂ absorption into DEEA/PZ solution, resulting in increasing absorption and desorption rates. Also, the mass transfer performance of CO₂ absorption into the best 1.50 M DEEA+ 0.5 M PZ solution was investigated in a hollow fiber membrane contactor. The effects of liquid flow rate, feed temperature range, lean CO₂ loading, inert gas flow rate and CO₂ partial pressure on the mass transfer performance were evaluated in terms of CO₂ absorption flux and overall gas phase mass transfer coefficient (K_G). Furthermore, a correlation was developed for the prediction of mass transfer coefficient (K_G) for CO₂ absorption into DEEA/PZ solution in a hollow fiber membrane contactor. A comparison between the experimental data and the calculated values from the improved correlation demonstrated that this model is applicable to predict the CO₂ absorption performance in hollow fiber membrane contactors.

使用改进的快速筛选方法估算了由N，N-二乙基乙醇胺（DEEA）和哌嗪（PZ）混合形成的胺混合物的二氧化碳（CO ₂）捕集潜力。在313.15 K和353.15 K上进行吸收和解吸实验，以确定摩尔比为2.00：0.00、1.50：0.50、1.00：1.00、2 mol / L DEEA / PZ的吸收速率，循环CO ₂容量和再生速率。 0.75：1.25、0.50：1.50、0.25：1.75和0.00：2.00。溶剂筛选实验结果表明，摩尔比为1.50：0.50的DEEA / PZ混合溶液表现出较高的CO ₂吸收速率和解吸速率，从而产生最高循环CO ₂容量0.8540 mol CO _2。/升 此外，实验结果还显示了在CO ₂吸收到DEEA / PZ溶液中的过程中的协同作用，从而提高了吸收和解吸速率。此外，在中空纤维膜接触器中研究了将CO ₂吸收到最佳1.50 M DEEA + 0.5 M PZ溶液中的传质性能。根据CO ₂吸收通量和总气相传质系数（K _G），评估了液体流速，进料温度范围，稀CO ₂负荷，惰性气体流速和CO ₂分压对传质性能的影响。。此外，还建立了用于预测传质系数（K _G），以在中空纤维膜接触器中将CO ₂吸收到DEEA / PZ溶液中。实验数据和改进的相关性计算值之间的比较表明，该模型适用于预测中空纤维膜接触器中的CO ₂吸收性能。