加离子液体萃取精馏制取无水乙醇的实验研究
Modern Chemical Industry(2013)
Abstract
进行了乙醇-水-1,3-二甲基咪唑二甲酯磷酸盐([MMIM]+[DMP]-)萃取精馏的实验研究,采用乙醇-水的共沸组成进料,最优实验条件为:萃取剂的质量分数为0.30,进料温度为常温15℃,萃取剂加入速度为5 mL/min,离子液体加入20 min后,打开回流比继电器采样,最佳回流比为R=3,塔顶乙醇质量分数为99.5%。
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Key words
extractive distillation,reuse liquid,ethanol-water,vapor-liquid equilibrium
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