The majority of dividing wall column (DWC) applications in the refining industry consist of standalone columns, whether a retrofit or a grassroots column.
The majority of dividing wall column (DWC) applications in the refining industry consist of standalone columns, whether a retrofit or a grassroots column. Functional DWCs are commonly encountered in naphtha splitters and reformate splitters. However, the technology can potentially improve the efficiency and profitability of an entire network of refinery units, as well. One such area is complex processes, like naphtha hydrotreating (NHT) and isomerization (ISOM), which generally consist of several columns. Here, the authors discuss how DWC technology is incorporated to combine two or more columns in these processes to improve overall energy efficiency and profitability.
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