Optimization of Parameters for Melt Crystallization of p-Cresol

Chin.J.Chem.Eng. ›› 2012, Vol. 20 ›› Issue (4): 649-653.

• SEPARATION SCIENCE AND ENGINEERING • Previous Articles Next Articles

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:2012-09-15 Published:2012-08-28
Supported by:
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

Optimization of Parameters for Melt Crystallization of p-Cresol

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

通讯作者: XU Changchun, E-mail:xuchangchun@tju.edu.cn
基金资助:
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

Abstract

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℃·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.

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

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.

关键词: melt crystallization, p-cresol, crystal separation degree, sweating, cooling rate

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.

丛山, 李鑫钢, 邬俊, 许长春. Optimization of Parameters for Melt Crystallization of p-Cresol[J]. Chinese Journal of Chemical Engineering, 2012, 20(4): 649-653.

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[2]	BAO Shaohua, QUAN Nannan, ZHANG Jing, YANG Jianguo. Alkylation of p-Cresol with tert-Butanol Catalyzed by Novel Multiple-SO₃H Functioned Ionic Liquid [J]. , 2011, 19(1): 64-69.

Optimization of Parameters for Melt Crystallization of p-Cresol

Optimization of Parameters for Melt Crystallization of p-Cresol

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