Multi-objective optimization of performance and energy consumption of intensified distillation processes for quaternary systems

摘要

This paper reports the design and multi-objective optimization of conventional and intensified distillation sequences for the separation of quaternary mixtures. Three cases of study were used to show the advantages and limitations of a set of conventional, non-sharp and intensified distillation sequences via the simultaneous optimization of the composition of a key component and the energy required for its separation. Results showed that the performance of these distillation configurations may vary substantially if these two metrics are the conflicting design objectives. Direct conventional distillation sequence can offer the same performance or even outperform intensified distillation sequences in some cases of study. This paper highlights the relevance of performing a reliable design of multi-component separation sequences to establish their limitations and capabilities.