赤藓糖醇在水中的结晶热力学及结晶过程研究  

Crystallization Thermodynamics and Its Crystallization Process of Meso-Erythritol in Water

作　　者：王海蓉 张春桃[2] 梁文懂[2] Wang Hairong;Zhang Chuntao;Liang Wendong(School of Chemistry and Chemical Engineering,Wuhan University of Science ＆ Technology, Wuhan 430081, China;Key Laboratory of Coal Conversion and New Carbon Materials for Hubei Province, Wuhan 430081, China)

机构地区：[1]武汉科技大学化学与化工学院,武汉430081 [2]武汉科技大学湖北省煤转化与新型炭材料重点实验室,武汉430081

出　　处：《化学工业与工程》2018年第3期50-54,共5页Chemical Industry and Engineering

基　　金：国家自然科学基金(21776225);湖北省教育厅科学技术研究计划重点项目(D20151101)

摘　　要：采用合成法测定了赤藓糖醇在水中的溶解度,并用修正的Apelblat方程和λh方程对其进行了关联,模型预测精度均可满足工业应用,采用修正的van’t Hoff方程和Apelblat方程计算了赤藓糖醇在水中的溶解焓、熵和吉布斯自由能;基于实验测定的结晶热力学数据,采用FBRM-PVM对赤藓糖醇冷却结晶过程进行了研究,研究结果为赤藓糖醇工业结晶过程的工艺优化和结晶设备的设计提供重要的基础数据。The solubilities of meso-Erythritol in water were experimentally measured from 283.15 K to 363.15 K at atmospheric pressure by employing the synthetic method. The experimental data were correlated by using the modified Apelblat equation and Ah equation, the accuracy of which could meet the need of their industrial use. The dissolution enthalpy, dissolution entropy and molar Gibbs energy of the dissolution of meso-Erythritol in water were then calculated. The cooling crystallization of meso-Erythritol had been studied by using FBRM-PVM on the basis of the measured crystallization thermodynamics data. The experimental data and the correlation equations in this work can be used as essential data and models in the industrial manufacture process optimization and crystallizer design of meso-Erythritol.

关 键 词：赤藓糖醇 结晶热力学 冷却结晶 

分 类 号：TQ923[轻工技术与工程—发酵工程]