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Separation Process Engineering: Includes Mass Transfer Analysis, Third Edition by Phillip C. Wankat

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4.9.2 Total Reboilers

A total reboiler vaporizes the entire stream sent to it; thus, the vapor composition is the same as the liquid composition. This is illustrated in Figure 4-21. The mass balance and the bottom operating equation with a total reboiler are exactly the same as with a partial reboiler. The only difference is that a partial reboiler is an equilibrium contact and is labeled as such on the McCabe-Thiele diagram. The total reboiler is not an equilibrium contact and appears on the McCabe-Thiele diagram as the single point y = x = xB.

Figure 4-21. Total reboiler

Image

Some types of partial reboilers may act as more or less than one equilibrium ...

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