Using a compressor-free method in heat integration of distillation columns for the separation of ternary mixtures

Various methods have been proposed for the heat integration of distillation columns, most of which, such as HIDiC, and VRC, require one or more compressors. Since the presence of compressors increases both capital and operating costs, it is better to use an efficient compressor-free method for the heat integration of distillation columns. In this article, heat integration of distillation columns was achieved simply by adding one heat exchanger. This method was applied to the separation of a ternary mixture of n-pentane, n-hexane, and n-heptane. Additionally, two classical configurations, direct and indirect, were examined. To implement the proposed method, one distillation column was placed at high pressure and the other at low pressure. Heat integration was performed between the condenser of the high-pressure column and the reboiler of the low-pressure column. According to the results, the proposed method in the Direct configuration reduced the energy consumption of the process by ۳۰%.

کلیدواژه ها:

Distillation ، Direct arrangement ، Heat Integration ، Ternary mixture