In order to study the addition of functional groups in ionic liquid anion and cation to achieve better absorbing of SO2,the 1,1,3,3-tetramethylguanidine triazole ([TMG][Triz]) is synthesized using 1,1,3,3-tetramethylguanidine and triazole as raw materials.The desulfurization performance of the synthesized [TMG][Triz] is systematically studied.The desulfurization performance and desulfurization mechanism of the [TMG][Triz] are discussed.The results show that the [TMG][Triz] has good performance of desulfurization and regeneration.At the atmospheric pressure,1 mol of the [TMG][Triz] absorbs 2.964 mol of SO2 at 20 ℃.With the increase of temperature,the desulfurization capacity of the [TMG][Triz] decreases gradually.The molar absorption ratio increases with the increase of SO2 partial pressure,and under the conditions of 130 ℃,the desorption rate of the ionic liquid after saturated adsorption reaches over 95 ％.The mechanism investigation results show that the interaction of SO2 and [TMG][Triz] is the combination of chemical absorption and physical absorption.The results have a certain reference value to improve the efficiency of flue gas treatment.%为了研究在离子液体阴、阳离子上添加功能基团,达到更好地吸收SO2的效果,以1,1,3,3-四甲基胍和三氮唑为原料,合成了三氮唑胍盐离子液体(简写为TMG][Triz]),对其脱硫性能进行了系统研究,探讨了离子液体[TMG][Triz]的脱硫性能及脱硫机理.结果表明,离子液体[TMG][Triz]具有良好的脱硫及再生性能.在常压、20℃条件下,1 mol离子液体[TMG] [Triz]吸收2.964 mol的SO2;随着温度的升高,离子液体[TMG] [Triz]的脱硫能力逐渐下降;摩尔吸收比随着SO2分压的增加而增加;130℃条件下,对吸收饱和后的离子液体进行解吸,解吸率达到95％以上.研究表明,离子液体[TMG][Triz]对SO2的吸收同时存在化学吸收和物理吸收2种作用,研究结果对提高烟气处理效率具有一定的参考价值.
展开▼
