A hydrocarbon stream (F1 ) consisting of three components n-pentane (1), n-heptane (2) and n-decane (3), is saturated vapor at pressure P = 1bar with molar composition [z,z,z]=[0.80,0.15,0.05] and a molar flow rate F1 =100.0kmol/hr The stream is mixed adiabatically with another stream F2 containing the same three components, which is saturated liquid at a pressure P=1bar with a molar composition of [ζ1,ζ2,ζ3]=[0.41,0.42,0.17] and a molar flow rate of F2= 10.0 kmol / hr . A sketch of this simple process is shown below: 1. Calculate the dew point temperature of the stream F1. 2. Calculate the bubble point temperature of the stream F 2 3. Calculate the molar flow rate, temperature and composition[y1, y2, y3] of the overhead stream V that is leaving the adiabatic flash drum. 4. Calculate the molar flow rate, temperature and composition[x1, x2, x3 ] of the bottoms stream L that is leaving the adiabatic flash drum. Hint: For all calculations assume that both the vapor and liquid phases behave ideally and that Raoult’s law apply for vapor liquid equilibrium calculations. Assume that the flash drum is at equilibrium, which means that the liquid stream L leaving the bottom is at equilibrium with the vapor stream V leaving the top.
A hydrocarbon stream (F1 ) consisting of three components n-pentane (1), n-heptane (2) and n-decane (3), is saturated vapor at pressure P = 1bar with molar composition
[z,z,z]=[0.80,0.15,0.05] and a molar flow rate F1 =100.0kmol/hr The stream is mixed adiabatically with another stream F2 containing the same three components, which is saturated liquid at a pressure P=1bar with a molar composition of [ζ1,ζ2,ζ3]=[0.41,0.42,0.17] and a molar flow rate of F2= 10.0 kmol / hr . A sketch of this simple process is shown below:
1. Calculate the dew point temperature of the stream F1.
2. Calculate the bubble point temperature of the stream F 2
3. Calculate the molar flow rate, temperature and composition[y1, y2, y3] of the overhead
stream V that is leaving the adiabatic flash drum.
4. Calculate the molar flow rate, temperature and composition[x1, x2, x3 ] of the bottoms stream L that is leaving the adiabatic flash drum.
Hint: For all calculations assume that both the vapor and liquid phases behave ideally and that Raoult’s law apply for vapor liquid equilibrium calculations. Assume that the flash drum is at equilibrium, which means that the liquid stream L leaving the bottom is at equilibrium with the vapor stream V leaving the top.
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