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用重量法测定了 C2 H4和 CO2 在 Co-丝光沸石上的吸附等温线和吸附扩散动力学曲线 ,并对吸附平衡等温线和扩散曲线模拟计算 ,拟合很好 .研究表明 ,在 Co-丝光沸石上 ,C2 H4的平衡吸附量远大于 CO2 的 ;而 C2 H4的吸附扩散速率与 CO2 的接近 .因此利用平衡吸附原理 ,用 Co-丝光沸石可将 C2 H4-CO2 中的 CO2 吸附下来 ,得到 1 0 0 %的 C2 H4.采用动态吸附法考察了吸附温度、流速、浸渍量以及活化温度对 Co-丝光沸石吸附分离 C2 H4-CO2 的影响规律 ,分析得出吸附剂的最佳操作条件 .采用 Co-丝光沸石来分离 C2 H4-CO2 ,分离因数大 ,选择吸附的量也较大 ,床层利用率高 ,脱附较易 .
The adsorption isotherms and adsorption-diffusion kinetics curves of C2H4 and CO2 on Co-mordenite were determined by gravimetric method, and the adsorption isotherms and diffusion curves were simulated and fitted well.The results show that in the Co-mercerized The equilibrium adsorption capacity of C2 H4 on zeolites is much larger than that of CO2, while the adsorption diffusion rate of C2 H4 is close to that of CO2. Therefore, by using the principle of equilibrium adsorption, CO2 in C2 H4-CO2 can be adsorbed by Co-mordenite, 100% C2H4. The influence of adsorption temperature, flow rate, impregnation amount and activation temperature on the adsorption and separation of C2H4-CO2 by Co-mordenite was investigated by dynamic adsorption method. The optimum operating conditions of adsorbent were obtained. The use of Co-mordenite to separate C2H4-CO2, the separation factor is large, the amount of selective adsorption is also large, high bed utilization, desorption easier.