己内酰胺-四丁基溴化铵类离子液体吸收SO_2效率的研究

摘要

Using caprolactam（CPL） and tetrabutyl ammonium bromide（TBAB） as raw material,CPL-TBAB ionic liquid is synthesized by the mole ratio of 2 ∶ 1,the prepared ionic liquid is mixed with ethanol by the volume ratio of 1.5 ∶ 1 to decrease the viscosity.Sieve-plate tower was used to absorb in order to investigate the optimum conditions and absorption efficiency.The results show that experimental conditions which generate the best absorption efficiency are as follows： ionic liquid flow rate 60 L/h,SO2 flow rate 0.2 L/min,temperature SO2 30℃ and maximum value of the absorption is 47.6%.%采用己内酰胺-四丁基溴化铵为原料,按摩尔配比为2∶1配制成[CPL][TBAB]类离子液体,制备的离子液体与乙醇溶液按体积比为1.5∶1混合以降低其粘度,利用筛板塔进行吸收实验,考察最佳吸收条件及最大吸收效率。结果表明,在实验条件下,最大的吸收效率条件为：离子液体的流量为60 L/h,SO2的流量为0.2 L/min,SO2为30℃,最大吸收效率为47.6%。