目的 探索以碳化氨水为吸收剂时二氧化碳脱除率与氨水含量及吸收液碳化度之间的规律.将吸收液回收再用,以求节能环保.方法 以有机玻璃为材料自制了二氧化碳模拟吸收填料塔,串联填料塔作为吸收CO2的反应器,以R=50％碳化氨水作为烟气中CO2吸收剂,对模拟烟气进行试验.结果 二氧化碳脱除率随着氨水含量的增加而增高；吸收液的碳化度随着氨水含量的增加而增高；碳化度越高的吸收液析出晶体越多；析出晶体经红外光谱检测证明为碳酸氢铵;氨水质量分数为12.5％时,二氧化碳脱除率为96％,碳化度为146％,脱除效果最好,反映出液碳化度最大,碳酸氢铵结晶效果最好.结论 碳化氨水能够实现有效脱除烟气中CO2并产生可资源化利用的碳酸氢铵,可以为燃煤电站减少二氧化碳排放提供一种有效的减排方法.%As the main greenhouse gas, CO2 emission reduction issues caused the worldwide attention. In order to solve the problems of the CO2 absorption,experiments of CO2 from simulative flue gas by ammoniay are investigated. Removing CO2 in flue gas with carbonized aqueous ammoniay benefits energy - saving and environmental protection because the ammoniay can be recycled. We make a series packed column with polymethylmethacrylate as the reactors for CO2 absorption. The influence of absorption rate and the solution carbonized ratio with carbonized aqueous ammoniay concentration on removing CO2 in flue gas have been investigated in the filled tower with the R = 50% carbonized aqueous ammoniay. The results show that the removal efficiency of CO2 by aqueous ammonia absorption increases with increasing the concentration of the carbonized aqueous ammoniay;the carbonized ratio of the solution increases with increasing the concentration of the carbonized aqueous ammoniay. The best result is obtained when the ratio of aqueous ammoniay is 12. 5%. Structures of the crystallization were characterized by infrared spectroscopy( FT-IR) and the resultsshow that the crystallization is ammonium bicarbonate.
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