August 2003

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HP Water Management: Understanding the utility side of reboilers

Reboilers use steam to provide heat transfer in a variety of distillation, purification and separation processes in refinery units such as gas plants, alkylation, sulfur recovery, aroma..

Huchler, L. A., MarTech Systems, Inc.

Reboilers use steam to provide heat transfer in a variety of distillation, purification and separation processes in refinery units such as gas plants, alkylation, sulfur recovery, aromatics recovery and catalytic reformers. Three of the most common reboiler designs are kettle, forced recirculation and thermosiphon. Reboilers control heat transfer rate to or from the process by measuring the process-side outlet temperature or pressure and modulating the valve controlling the reboiler's steam supply (Figs. 1 and 2).  Fig. 1

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