Stripping crystallization (SC) is introduced in this work to purify durene from the mixture consisting of isodurene and durene. SC is a new technology which combines melt crystallization and vaporization via a series of three-phase transformations at low pressures during the cooling process. The three-phase transformation conditions for a liquid mixture determined by the thermodynamic calculations were adopted to direct the batch SC experiments. A model based on the mass and energy balances was proposed to determine the variation of the amount of remaining liquid, crystallized durene product and produced vapor during SC. The experimental yield and purity of the final durene product obtained from the experiments were compared with those predicted by the model.

在这项工作中引入了汽提结晶 (SC) 以从由异杜烯和杜烯组成的混合物中纯化杜烯。SC是一种新技术，它在冷却过程中通过一系列低压下的三相转变将熔体结晶和汽化相结合。采用由热力学计算确定的液体混合物的三相转变条件来指导批量 SC 实验。提出了基于质量和能量平衡的模型来确定 SC 期间剩余液体、结晶杜烯产物和产生的蒸汽量的变化。将从实验中获得的最终杜烯产物的实验产率和纯度与模型预测的结果进行比较。