活性炭改性及其在油气分离回收中的应用

Modification of activated carbon and its application on separation and recovery of gasoline vapor

采用活化剂（KOH、H3PO4、KH2PO4）浸渍活性炭2-12 h,以提高活性炭的吸附容量,探讨了活化剂的种类、浓度和浸渍时间对活性炭吸附油气性能的影响。结果表明,改性后活性炭的含氧基团有了一定程度增加,对吸附油气更加有利。并在一套油气分离回收中试装置上测定了不同油气浓度和气流流量下改性活性炭对油气的吸附效果。

Activated carbons were modified by impregnation to enhance the adsorptive capacity.The effects of modifier type（KOH,H3PO4,KH2PO4）,concentration and impregnating time（2～12 h） on the adsorption performance were investigated.The results indicated that oxygen-containing functional groups increased to some extents,which benefits the adsorption of gasoline vapor.On a pilot scale set-up,the adsorption efficiency was also studied under different gasoline vapor concentrations and gas flow rates.