Calculation of CO۲ Emission in New Hybrid Heat Integration Technique

This paper seeks to propose a new method for the heat integration of distillation columns. The separation of a five-component mixture, including ethane, propane, i-butane, n-butane, and n-pentane, in four sequential distillation columns was investigated. The process was simulated in detail with and without heat integration. A hybrid of the feed splitting and multi-effect distillation techniques was used for heat integration. The former splits the feed into two streams, where the bottom stream is preheated by the bottom product of the column or another hot process stream, whereas the top stream of the feed flows into the column without a temperature change. The multi-effect approach comprises a high-pressure column and a low-pressure column, and the condenser of the former is integrated with the reboiler of the latter. The results showed that the proposed hybrid heat integration technique reduced energy consumption by ۴۳% and CO۲ emission by ۳۸%.

کلیدواژه ها:

Multi-effect ، feed splitting ، heat integration ، distillation ، CO۲ emission