Kuwait University College of Engineering & Petroleum Depatment of Chemical Engineering

1. Kuwait University College of Engineering & Petroleum Depatment of Chemical Engineering Propylene Production from Carbon Dioxide Designer: Dalal AlDughaishem Supervised by: Prof.M.Fahim Eng.Yusuf Ismail

2. outlines • Pump . • Vertical Separator. • Distillation column.

3. PumpCentrifugal Pump is a machine used for moving a liquid from lower to higher pressure and overcoming this difference by adding energy to the system.

4. Procedures • Calculate Break horse power. Where BHP =is the break horsepower of the pump in watt Q= flow rate in m3/s H= the static head of the pump in m. ρ= the density of the fluid kg/m3 • Calculate the horse power • Calculate the efficiency and compare it with the assumed efficiency.

5. Calculate the pipe diameter for the discharge. • Where, • ∆P is the pressure difference between the inlet and outlet streams in kpa • G: flow rate kg/s • ρ: the density of the fluid kg/m3 • μ: viscosity cp • D: pipe diameter mm • Calculate the cost of the pump.

7. SeparatorSeparators are mechanical devices for removing and collecting liquids from natural gas. Vapour 0.4m feed Dv Dv/2 Liquid level Liquid

8. Procedures • Calculate the settling velocity. 2) Calculate vapor volumetric flowrate. 3) Calculate liquid volumetric flowrate. 4) Determine the volume held in vessel using the above information's. 5) Then calculate the minimum vessel diameter.

9. 6) Calculate the liquid depth. 7) Determine the thickness of the wall. Where: TH: thickness (in) P: internal pressure (psig) RI: internal radius of shell (in) Ej: efficiency S: working stress (psi) =13700 for Carbon Steel Cc: allowance for corrosion (in) 8) Calculate the length of the vessel.

10. 9) Then calculate the volume of metal using the difference between volumes using inside and outlet diameters. 10) Calculate the weight of the metal. 11) Calculate the cost.

14. Distillation column

15. Procedures • Specify the properties of outlets streams: (flow rate, density and surface tension) for both vapor and liquid from HYSYS. • Column Diameter. Where FLv: liquid-vapor flow factor Lw: liquid flow rate, kmol/hr ρL: liquid density,kg/m3 Vw: vapor flow rate, kmol/hr ρv :vapor density, kg/m3

16. Choose tray spacing and then determine K1 and K2 . • Calculate correction factor for Bottom K1 and Top K1. • Design for X% flooding at maximum flow rate for top and bottom part of distillation. Where uv: maximum velocity, m/s. x: percentage of flooding at max flowrate.

17. Calculate the maximum flow rates of liquid. Where Max.: Maximum Volumetric Flow rate. Lw: liquid flow rate, kmol/hr ρL: liquid density, kg/m3 M.wt: molecular weight, kg/ kmol

18. Calculate Net area required. Where Anet: Net area required, m2 M max = max Volumetric Flow rate uv: maximum velocity, m/s. • Take down comer area. • Calculate the column diameter.

19. H= (Tray spacing * actual NO. stage ) + D • Calculate the column height using the actual number of stage. • Calculate column area, down comer area, active area, net area, hole area and weir length. Where Ac: column area, m2 Aa: active area, m2 Ah: hole area, m2

20. Check weeping Where: max Lw: maximum liquid rate, (kg/s). min Lw : minimum liquid rate, (kg/s). max how: mm liquid. min how : mm liquid.

21. Calculate Back-up in down comer.

22. Check residence time. • Calculate number of holes. • Calculate area of condenser and reboiler. Where m: mass flowrate (kg/h) cp: mass heat capacity U: overall heat transfer coefficient • Calculate Thickness of the distillation.

24. Thankyouforlistening