化工进展2016，Vol.35Issue(8)：2342-2349,8.DOI:10.16085/j.issn.1000-6613.2016.08.06
同轴式内部热耦合精馏塔的传热性能
Heat transfer property of concentric internally heat integrated distillation column
摘要
Abstract
A calculation method of the overall heat transfer coefficient of concentric internally heat integrated distillation column(HIDiC)is proposed in this study. The method is based on the physical property data of experimental system. The ethanol-water mixture is used as a case to study the self-made pilot-plant concentric HIDiC under different pressure ratio experimentally(1.4—2.6,step is 0.1). The phase transformation to the coefficient of heat is calculated by measured temperature distribution. The overall heat transfer coefficient and heat exchange amount between the two columns sections are computed through experimental temperature in this column. The calculated value of the overall heat transfer coefficient decreases with the increase of the pressure ratio and is shown to be between 300W/(m2·K) and 800W/(m2·K). In the case of operating conditions and product purity consistent with the experimental value,the heat transfer calculation value between rectifying and stripping sections is substituted into software to simulate. The temperature distribution simulated by the calculated value in simulation software is correlated with the experimental temperature. The method of calculating the overall heat transfer coefficient of HIDiC is proved to be practical and effective.关键词
蒸馏/塔器/传热/计算机模拟Key words
distillation/column/heat transfer/computer simulation分类
化学化工引用本文复制引用
方静,赵蕊,李春利,轩碧涵..同轴式内部热耦合精馏塔的传热性能[J].化工进展,2016,35(8):2342-2349,8.基金项目
教育部博士点基金项目（20131317120014）。 （）
