Recently, it has been shown that solutions of amino acid salts are suitable absorbents for CO₂ separation. Potassium carbonate is an economic solvent; however, it has a slow reaction rate with CO₂. In this work, potassium carbonate promoted with l-Proline, as an amino acid, is applied as a CO₂ absorbent using a hollow fiber membrane contactor. Experimental results showed that recovery can rise up by adding l-Proline. Effects of parameters such as gas and liquid flow rates and concentration of absorbents on CO₂ recovery and CO₂ molar flux were investigated. The effect of wetting parameters, CO₂ percent in feed gas and temperature on CO₂ recovery were investigated by mathematical model. Results show that CO₂ recoveries near 100 % can be reached at the l-Proline concentration of 0.1 mol/l, which reveals the potential of this amino acid as promoter of K₂CO₃.

最近，已经显示氨基酸盐的溶液是用于CO ₂分离的合适吸收剂。碳酸钾是一种经济的溶剂。但是，它与CO _2的反应速率较慢。在这项工作中，使用中空纤维膜接触器将以l-脯氨酸作为氨基酸促进的碳酸钾用作CO ₂吸收剂。实验结果表明，通过添加1-脯氨酸可以提高回收率。研究了诸如气体和液体流速以及吸收剂浓度等参数对CO ₂回收率和CO ₂摩尔通量的影响。润湿参数CO _2的影响通过数学模型研究了进料气中的百分数和温度对CO ₂回收率的影响。结果表明，在l-脯氨酸浓度为0.1 mol / l时，CO _2的回收率可达到100％，这表明该氨基酸具有作为K ₂ CO ₃促进剂的潜力。