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Q5. A gas stream containing 16% methane, 18% ethane, 19% propane, 33% į-butane and 14% n-butane at 65°F and atmospheric pressure, and a flow rate of 640 Kgmol/hr. This stream is to be compressed to 85 psia, and then cooled to 13°F. The resulting vapor and liquid are to be separated into two product streams using flash drum [Use PR fluid package / Cooler pressure drop is 75 kpa). [10 marks] 1. What are the flow rates of these two streams? [1 mark] Top flow rate = Bottom flow =- --Ibmol/hr Ibmel/hr. 2. What is the mass fraction of Ethane in the vapor and liquid streams? [1 mark] Ethane mass fraction in the top=--- Ethane mass fraction in the bottom= 3. What is the mole/mass fraction of j-butane in the vapor and liquid streams? [1 mark] i-butane mole/mass fraction in the top=-- į-butane mole/mass fraction in the bottom=- 4. Create a case study to show how cooler pressure drop affect the heat flow in the cooler. Use pressure range from 50 to 580 kpa with a step size of 5 kpa. Copy your plot in the word file. [2 mark] 5. Create a case study that shows the effect of the flash vessel pressure drop (psi) on the mole fraction of n-butane in the bottom stream and molar flow of the bottom stream (Ibmel/br). Ap range [0-25 psi, with a step of 0.25 psi). Copy your plot in the word file. [2 mark] 6. From the case study conducted above, find the mole fraction of n-butane in the bottom stream and the molar flow of the bottom stream (Ibmol/ho) when the pressure drop = 17 psi [2 mark] n-butane mole fraction in the bottom = Bottom flow = Ibmole/hr