摘要
文中着重研究了ＭＤＥＡ溶液对Ｈ２Ｓ和高浓度ＣＯ２混合气的选择性脱硫过程，从动力学的角度阐述了决定过程选择性的因素，并在小型填料塔上进行了实验研究。结果表明，只要控制较高的气速、气液比、较短的气液接触时间，用ＭＤＥＡ溶液对ＣＯ２体积分数为８０％的含Ｈ２Ｓ气体脱硫，净化气中的Ｈ２Ｓ的体积分数可以降到１％以下，液相中Ｈ２Ｓ与ＣＯ２的摩尔比为０．４～３。该研究结果，为工业应用提供了理论依据。
The aqua MDEA is used as a agent of selective absorption for tail gas with H2S and high density CO2. A laboratory test of selective absorption is completed, and the conclusions are obtained as that high selectivity can be reached with high gas-rate and short hold-up time.
