= molar flow rate of the vapor phase in the rectifying section (mole time -1) = temperature of the feed stream (temperature) = dew-point temperature of the feed stream at the column operating pressure (temperature) = bubble-point temperature of the feed stream at the column operating pressure (temperature) = metric that reflects the physical state of the feed stream (unitless) = molar flow rate of the liquid portion of the feed stream (mole time -1) = molar flow rate of the liquid phase in the stripping section (mole time -1) = molar flow rate of the liquid phase in the rectifying section (mole time -1) = molar flow rate of the feed stream entering the system (mole time -1) = heat capacity of the vapor feed stream (energy mole -1 temperature -1) = heat capacity of the liquid feed stream (energy mole -1 temperature -1) = enthalpy change of vaporization of the feed stream at the column operating pressure (energy mole -1) McCabe-Thiele Method for Finding N and Feed Stage Location Material balance on stages, the rectifying section of the column = mass or mole fraction of the light key in the feed streamĬombination of material balances in Equations 20.1 and 20.2 = mass or mole fraction of the light key in the vapor leaving stage = mass or mole fraction of the light key in vapor stream = mass or mole fraction of the light key in the liquid leaving stage = mass or mole fraction of the light key in the distillate stream = mass or mole fraction of the light key in the bottoms stream = mass or mole fraction of the light key in a liquid stream = mass or molar flow rate of the gaseous boilup returned to the column from the reboiler (mass time -1 or mole time -1) also generic flow rate of the vapor phase in the stripping section = mass or molar flow rate of vapor leaving the top of the column and entering the condenser (mass time -1 or mole time -1) also generic flow rate of the vapor phase in the rectifying section = generic stage number, stage 1 is at the top of the column = mass or molar flow rate of the liquid leaving the bottom of the column and entering the reboiler (mass time -1 or mole time -1) also generic flow rate of the liquid phase in the stripping section = mass or molar flow rate of the liquid reflux returned to the column from the condenser (mass time -1 or mole time -1) also generic flow rate of the liquid phase in the rectifying section = mass or molar flow rate of the feed stream entering the system (mass time -1 or mole time -1) = mass or molar flow rate of the distillate stream leaving the system (mass time -1 or mole time -1) = mass or molar flow rate of the bottoms stream leaving the systems (mass time -1 or mole time -1) Lightkey incorporates hundreds of grammar rules and delivers relevant predictions in over 60 built-in content domains including technology, business, finance, law, academia, and more.5 Distillation Introduction to Distillation
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