As the global energy sector enters a new phase centered on energy reduction, dividing wall columns (DWC) are providing a unique way to meet the current challenges facing the refining and petrochemical industries. The concept of a dividing wall is not new; in fact, it has been utilized in the chemicals industry for some time. However, over the past decade, this concept has gained momentum following successful revamps of existing distillation columns. DWCs have produced tremendous savings in both capital and utility costs as compared to conventional distillation columns, and are now being used with advanced heat integration schemes.
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