An oil containing 2.25 mole% of a hydrocarbon is stripped with live steam. Assume that 4 kmol of steam are used per 100 kmol of oil stripped. The vapor-liquid relation of the hydrocarbon in the oil is . Assume an isothermal operation by using internal heating, so that steam does not condense in the stripping tower. This Demonstration plots the graphical construction (i.e., the operating line in blue and the equilibrium curve in red). The staircase construction, shown in black, gives the number of theoretical stages need to achieve the user-specified percent recovery of the hydrocarbon.
J. M. Coulson, J. F. Richardson, J. R. Backhurst, and J. H. Harker, Coulson and Richardson's Chemical Engineering: Solutions to the Problems in Volume 2 & 3, 2nd ed., Oxford: Butterworth–Heinemann, 1997.
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