环戊烷对离子液体深度脱硫再生循环应用的研究

摘要

研究了脱硫后噻吩含量达到饱和的离子液体脱硫剂的反萃取回收方法。以环戊烷作为反萃取剂，考察了环戊烷体积、反萃时间、反萃温度等因素对离子液体脱硫剂的反萃率的影响。实验结果表明，最佳反萃条件为：V (离子液体)∶V (环戊烷)=1∶2、35℃下萃取15 min。在最佳反萃条件下，离子液体的反萃率为82.38%。将经过反萃再生的[C8 MIM]BF4离子液体应用于模拟油脱硫反应中，脱硫率达到62.37%。%The regeneration of thiophene saturated ionic liquid obtained after desulfurization of gasoline were studied. Cyclopentane was used as the extractant to regenerate the ionic liquid([C8 MIM]BF4 ).The dosage of cyclopentane,extraction time and extraction temperature were examined.The optimal operation condition,whereV (ionic liquid)∶V (cyclopentane)=1∶2 at 35 ℃ for 1 5 min were obtained.Under the optimal condition,the back-extraction rate of the ionic liquid can reach 82.38%.The recovered ionic liquid was further applied to the desulfurization of model oil,and the desulfurization rate can reach 62.37%.