You are designing a system to purify a stream containing 35 mol% ethanol and 65 mol%...

 

Transcribed Image Text:

You are designing a system to purify a stream containing 35 mol% ethanol and 65 mol% water with a flowrate of 75 kmol/h. You can generate the binary equilibrium curves for this system at 1 ATM using the Wilson model and either checalc.com or ASPEN, but you should solve the problem by hand and show your solution graphically on the equilibrium diagram. Your task is to compare the performance of one flash drum versus two flash drums where all flash distillation operations are at 1 ATM. a. What are the compositions of the liquid and vapor products for one flash drum if the vapor product flowrate is 25 kmol/hr? b. Suppose you use two flash drums in series, where the vapor flowrate from the first flash drum is 15 kmol/hr and the liquid product from the first drum is sent to a second flash drum operating with a vapor C. flowrate of 10 kmol/hr. Calculate the compositions of both vapor product streams. Calculate the composition of the vapor product if you combine both the vapor product streams from part (b) into a single stream. Compare the composition of this combined vapor product to your solution from part (a) You are designing a system to purify a stream containing 35 mol% ethanol and 65 mol% water with a flowrate of 75 kmol/h. You can generate the binary equilibrium curves for this system at 1 ATM using the Wilson model and either checalc.com or ASPEN, but you should solve the problem by hand and show your solution graphically on the equilibrium diagram. Your task is to compare the performance of one flash drum versus two flash drums where all flash distillation operations are at 1 ATM. a. What are the compositions of the liquid and vapor products for one flash drum if the vapor product flowrate is 25 kmol/hr? b. Suppose you use two flash drums in series, where the vapor flowrate from the first flash drum is 15 kmol/hr and the liquid product from the first drum is sent to a second flash drum operating with a vapor C. flowrate of 10 kmol/hr. Calculate the compositions of both vapor product streams. Calculate the composition of the vapor product if you combine both the vapor product streams from part (b) into a single stream. Compare the composition of this combined vapor product to your solution from part (a)