Answer Happy

Q6: Consider the flash separation process of hydrocarbon as shown the Figure below. [10 marks] ADJ-1 OverheadVap VLV-100 Feed V-100 S2 Rec S1 MIX-100 Qf RCY-1 $5 Bottom P-100 S3 B TEE-1001 Qp 2 Net Energy S4 BAL-1 SET-1 Water Purge SET-2 CET.2
Specifications are as follows; I Feed Temperature: 4.2°C I Feed Pressure: 108 psia 1 Mass flowrate in lb/hr (Methane= 50, Ethane= 100, Propane= 700, n-Butane=870, 1-Butene =1176 and 13-Butadiene=5130) I Pressure drop inside the valve = 56 psi 1 Stream Qvhd temperature = 4.5 o C TEE ratio = 62% s3 I Stream S5 pressure = 102 psia Use SRK fluid package to find out the followings: Note: 1. 2. 3. 4. 5. Component list name MUST be AuH 2021 (rename 'component list - l' to 'AUH - 2021'). Property package name MUST be AuH50 (rename from 'Basis - l' to 'AuH50'). Total molar flowrate of the flash overhead: Ibmole/br [1 mark] Total mole flowrate of the recycle stream ('Rec):- Ibmole/hr [1 mark] Duty of flash separator (Qf) and pump power (Qp). [2 mark] Qt --- Kw. Q.= Kw Use balance operation to find out net energy (("Net energy") value:...........Btu/hr [2 mark] Use ADJUSTS to find required valve pressure drop, which increases the overhead flow rate to 150 lbmole/br. psi. [2 mark] HINT: Use Tolerance = 0.5 and step size = 0.25, maximum iteration 45 Use 'set' logical operators to define the pure water stream ('water purge') temperature from freed stream, 1.4 times of 'Rec' pressure and 14 Ibmole /hr more than 'Bottom' stream flowrate. [2 mark] a. b. 6. 7. 8. 9.