Optimization of Parameters for Melt Crystallization of p-Cresol  

熔融结晶精制高纯对甲酚的参数优化研究(英文)

作　　者：丛山 李鑫钢 邬俊 许长春 

机构地区：[1]School of Chemical Engineering and Technology,Tianjin University [2]National Engineering Research Center of Distillation Technology,Tianjin University

出　　处：《Chinese Journal of Chemical Engineering》2012年第4期649-653,共5页中国化学工程学报（英文版）

基　　金：Supported by the National Basic Research Program of China (2009CB219905);Program for Changjiang Scholars and Innovative Research Team in University (IRT0936);Innovating Fund of Tianjin University

摘　　要：Laboratory-scale experiments were carried out to evaluate the influences of operational parameters on the melt crystallization efficiency for p-cresol purification.The optimal crystallization conditions were determined:dynamic pulsed aeration at 90 L·h-1 and the cooling rate of 0.6-0.8 ℃·min-1,followed by sweating at 0.2-0.3 ℃·min-1 for 40 min.Results also demonstrate that the melt crystallization efficiency is sensitive to feed concentration,which highlights this technology for separation and purification of high purity products.Laboratory-scale experiments were carried out to evaluate the influences of operational parameters on the melt crystallization efficiency for p-cresol purification. The optimal c.rystallization conditions were determined： dynamic pulsed aeration at 90 L·h-1 and the cooling rate of 0.6 0.8 ℃min^-1, followed by sweating at 0.2-0.3 ℃.min^-1 for 40 min. Results also demonstrate that the melt crystallization efficiency is sensitive to feed concentration, which highlights this technology for separation and purification of high purity products.

关 键 词：melt crystallization P-CRESOL crystal separation degree SWEATING cooling rate 

分 类 号：TQ243.12[化学工程—有机化工]