熔融结晶精制高纯对甲酚的参数优化研究

Chinese Journal of Chemical Engineering ›› 2012, Vol. 20 ›› Issue (4): 649-653.

熔融结晶精制高纯对甲酚的参数优化研究

丛山¹; 李鑫钢^1,2; 邬俊¹; 许长春^1,2

¹ School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China ² National Engineering Research Center of Distillation Technology, Tianjin University, Tianjin 300072, China

收稿日期:2011-12-06 修回日期:2012-03-15 出版日期:2012-08-28 发布日期:2012-03-15

Optimization of parameters for melt crystallization of p-cresol

CONG Shan¹; LI Xingang^1,2; WU Jun¹; XU Changchun^1,2

¹ School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China ² National Engineering Research Center of Distillation Technology, Tianjin University, Tianjin 300072, China

Received:2011-12-06 Revised:2012-03-15 Online:2012-08-28 Published:2012-03-15

摘要/Abstract

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 °C•min?1, followed by sweating at 0.2-0.3 °C•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

Abstract: 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 °C•min?1, followed by sweating at 0.2-0.3 °C•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.

Key words: melt crystallization, p-cresol, crystal separation degree, sweating, cooling rate

丛山, 李鑫钢, 邬俊, 许长春. 熔融结晶精制高纯对甲酚的参数优化研究[J]. Chinese Journal of Chemical Engineering, 2012, 20(4): 649-653.

CONG Shan, LI Xingang, WU Jun, XU Changchun. Optimization of parameters for melt crystallization of p-cresol[J]. Chin.J.Chem.Eng., 2012, 20(4): 649-653.