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Lab #6 – Introduction to UNISIM Exercise

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Dynamics and Control of Chemical Processes

Prof. Davide Manca

Chemistry, Material and Chemical Engineering Department, “G. Natta”

Politecnico di Milano  

Lab #6 – Introduction to UNISIM

Exercise 1: Flash 

Case 1.1: 

 

    Thermodynamic equation: RKS  

Data: 

• Liquid State  

• Capacity:     300 kmol / h 

• Temperature:   343 K 

• Pressure:     1000 kPa 

• Molar fractions: 1 ‐ BENZENE: 0.1082         2 ‐ BUTANE: 0.3243         3 ‐ 1‐BUTENE: 0.1351         4‐ 1.3‐BUTADIENE: 0.4324 

• Operating conditions: Duty 2.E6 kJ / h         Pressure 400 kPa 

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2  Case 1.2: 

   

  Thermodynamic equation: RKS 

Data: 

• Pump 

   Head:     500 kPa 

• Valve 

   Pressure drop:   600 kPa 

• Exchanger (Cold Side)     Duty:     2.E6 kJ/h 

• Flash (Adiabatic) 

   Duty:       0 kJ/h 

   Pressure drop:     0 kPa     Liquid feed 

   Flow:       300 kmol/h 

   Temperature:     343 K 

   Pressure:     500 kPa 

   Fractions molars: 

1 ‐ BENZENE: 0.1082  2 ‐ BUTANE: 0.3243  3 ‐ 1‐BUTENE: 0.1351  4‐1.3‐BUTADIENE: 0.4324   

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