Unformatted text preview: concentration of this liquid phase. Problem 3. Consider a stripping column for ethylbenzene and toluene at 600 mmHg. The stripping column consists of three stages and the reboiler. The liquid feed at the top is 600 mol/hr and the bottoms produces a 150 mol/hr stream of 94% ethylbenzene. Determine the composition of each liquid stream in the system ( x , x 1 , x 2 and x 3 ) as well as the gas streams ( y 1 , y 2 , y 3 and y 4 ). Check the quality of your triangle drawing by comparing your ﬁnal results to the overall balance on toluene. Problem 4. Consider a distillation column for ethylbenzene and toluene at 600 mmHg. The column takes a saturated vapor feed of 60% toluene at the optimal feed location. The distillate and bottoms are both 90% purity and the column operates at 1.3 times the minimum reﬂux ratio. Determine (i) the location of the feed tray and (ii) the ratio of the number of stages of the column relative to the minimum number of stages. 1...
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This note was uploaded on 10/30/2011 for the course CHEN 2001 taught by Professor Dorfman during the Fall '08 term at Minnesota.
- Fall '08