Multivessel Batch Distillation - Potential Energy Savings

Abstract

A conventional batch distillation column operated under feedback control is compared with the multivessel batch distillation column. For a four-component separation, we found that a reduction in energy usage of up to 50% is possible by using multivessel batch distillation instead of a conventional batch distillation column with similar column length. Besides the considerable reduction in energy usage, the main advantage with the multivessel batch distillation column is probably its much simpler operation compared to a conventional batch distillation column.