Q.3 A solution containing 50% ethylbenzene (A) and 50% styrene (C) is to be separated at 25°C at a rate of 1000 kg/h int
Posted: Mon May 16, 2022 1:35 pm
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Q.3 A solution containing 50% ethylbenzene (A) and 50% styrene (C) is to be separated at 25°C at a rate of 1000 kg/h into products containing (on a solvent-free basis) 10% and 90% styrene, respectively, with diethylene glycol (B) as solvent. Determine the number of theoretical stages and feed location if the extract reflux ratio is 8.55 kg reflux/kg extract product. Equilibrium data are given below. Hydrocarbon-rich solutions Solvent-rich solutions x kg styrene kg hydrocarbon N, kg glycol kg hydrocarbon kg styrene kg hydrocarbon N, kg glycol kg hydrocarbon 0 0.0870 0.1883 0.288 0.384 0.458 0.464 0.561 0.573 0.781 1.00 0.00675 0.00817 0.00938 0.01010 0.01101 0.01215 0.01215 0.01410 0.01405 0.01833 0.0256 0 0.1429 0.273 0.386 0.480 0.557 0.565 0.655 0.674 0.833 1.00 8.62 7.71 6.81 6.04 5.44 5.02 4.95 4.46 4.37 3.47 2.69
Q.3 A solution containing 50% ethylbenzene (A) and 50% styrene (C) is to be separated at 25°C at a rate of 1000 kg/h into products containing (on a solvent-free basis) 10% and 90% styrene, respectively, with diethylene glycol (B) as solvent. Determine the number of theoretical stages and feed location if the extract reflux ratio is 8.55 kg reflux/kg extract product. Equilibrium data are given below. Hydrocarbon-rich solutions Solvent-rich solutions x kg styrene kg hydrocarbon N, kg glycol kg hydrocarbon kg styrene kg hydrocarbon N, kg glycol kg hydrocarbon 0 0.0870 0.1883 0.288 0.384 0.458 0.464 0.561 0.573 0.781 1.00 0.00675 0.00817 0.00938 0.01010 0.01101 0.01215 0.01215 0.01410 0.01405 0.01833 0.0256 0 0.1429 0.273 0.386 0.480 0.557 0.565 0.655 0.674 0.833 1.00 8.62 7.71 6.81 6.04 5.44 5.02 4.95 4.46 4.37 3.47 2.69