离子液体[Emim]BF_4的合成及其脱除烟气SO_2的研究  

Synthesis of ionic liquid[Emim]BF_4 and application on flue gas desulfurization of SO_2

作　　者：吴雅睿[1] 杨永健[1] 朱国徽 杨乐[1] 张倩如[1] 耿向垚 

机构地区：[1]西安科技大学测绘科学与技术学院,西安710054

出　　处：《化工新型材料》2015年第9期192-194,共3页New Chemical Materials

基　　金：陕西省教育厅基金资助项目(14JK1479);国家级大学生创新创业训练计划项目(201410704005)

摘　　要：实验采用微波辅助合成了1-乙基-3-甲基咪唑四氟硼酸([Emim]BF4)离子液体,采用多种方法表征了该离子液体的结构。构建了离子液体[Emim]BF4、水和乙醇的脱硫体系,并对脱硫工艺进行了探讨,考察了反应温度、SO2气体体积分数、气体流量以及脱硫体系配比对脱硫的影响,确定适宜的脱硫反应条件为反应温度30℃,入口SO2气体体积分数2×10-3,SO2气体进气流量控制为150mL/min,脱硫体系V(离子液体[Emim]BF4)∶V(水)∶V(乙醇)=1∶1.5∶3时,脱硫效率最高。并且[Emim]BF4具有良好的再生性能,脱硫液可实现重复利用。[Emim] BF4 ionic liquid was synthesized through microwaveassisted reaction and ionic liquid synthesis conditions were optimized. The [Emim]BF4 , water and ethanol desulphurization system was established and the desulfurization process was investigated. The effects of reaction temperature, SOz concentration, gas flow and proportioning of desul- phurization system on the desulfidation were discussed. Results showed that under the conditions which reaction tempera- ture was 30℃ ,SO2 concentration was 2000ppm,gas flow was 150mL/min and [Emim]BF4 ： water： ethanol= 1 ： 1.5 ： 3, the desulfurization efficiency was the best. [Emim]BF4 had a good regeneration performance and the desulphurization system can be reused.

关 键 词：SO2 离子液体 脱硫 

分 类 号：X701.3[环境科学与工程—环境工程] O643.36[理学—物理化学]