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化工学报  2014 

氯化锂、氯化钠在NMP中溶解度的测定与关联

DOI: 10.3969/j.issn.0438-1157.2014.12.003, PP. 4664-4668

Keywords: 激光法,氯化锂,回收,NMP,相平衡,改进的NRTL方程,参数估值

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Abstract:

为了回收聚苯硫醚生产中的助剂氯化锂,对氯化锂、氯化钠在溶剂NMP(N-甲基吡咯烷酮)中的溶解性能进行了研究.利用激光衍射辅助法在297.95~364.75K温度范围内对氯化锂、氯化钠在NMP中的溶解度进行了测定,并用经验方程、λh方程、改进的NRTL方程对氯化锂在NMP中的溶解度数据进行关联.结果证明,改进的NRTL方程的拟合结果最好,平均相对偏差仅为0.41%,可适用于较高温度下氯化锂-NMP体系溶解度的数据估计.

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