W

Vm Vm

(equation 11.37)

This has a slope Lm/ Vm and cuts the y = x line at x = xw.

If £ kmol of live steam is used as shown in Figure 11.48, then considering that part of the column below the plate (m + 1):

and:

Assuming constant molar overflow, Lm = Lm+1 = W and Vm = £, and:

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