April 2022

Heat Transfer

Preferential baffle reboiler—Part 1

Distillation towers consume ~30% of the energy in a refinery or petrochemical facility.

Sharma, A., Process Engineer

Distillation towers consume ~30% of the energy in a refinery or petrochemical facility. The reboiler is the stomach of the distillation tower that consumes the energy to separate the components. Any improvement in design or operational flexibility will save the energy and profitability of the plant. Two main types of reboilers are in use: a circulating (conventional) reboiler and a once-through reboiler. A preferential baffle reboiler is simply a combination of a once-through and circulating reboiler, and is more efficient than the circulating reboiler and more flexible than a once-through reboiler. This thermosyphon, or forced reboiler, can take liquid directly from the tray as well as the

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