Pumparounds and Tower Heat Flows


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Pumparounds and Tower Heat Flows
101031010111061030900 Pumparounds and Tower Heat FlowsClosing the Tower Enthalpy BalanceThere are two ways to remove heat from a distillation tower: top reflux and circulating reflux. In this chapter, we call a circulating-reflux stream a pumparound.The vast majority of fractionators have top reflux. Cold liquid from the reflux drum is pumped onto the top tray of the tower. The cold liquid flashes to a hotter vapor. For example, let's say 1500 lb/h of liquid butane at 100°F flashes to 1500 lb/h of vapor at 260°F.Th…
Citation
Norman P. Lieberman; Elizabeth T. Lieberman: Working Guide to Process Equipment, Fourth Edition. Pumparounds and Tower Heat Flows, Chapter (McGraw-Hill Professional, 2014), AccessEngineering Export