1. College of Engineering & Petroleum Depatment of Chemical Engineering
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. overcoming this difference by adding energy to the system.
Pump Centrifugal
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.

6. To increase liquid pressure
Pump
Equipment Name
To increase liquid pressure
Objective
100
Equipment Number
Dalal Aldughaishem
Designer
Cenrifugal Pump
Type
Amine process
Location
Cast Iron
Material of Construction
Quartz Wool , Glass Wool
Insulation
5900$
Cost
Operating Condition
34.645
Outlet Temperature (oC) 33
Inlet Temperature (oC) 48
Outlet Pressure (psia) 2
Inlet Pressure (psia)
1200
Power (Hp)
75%
Efficiency (%)

7. Separator Separators 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.

11. separator
Equipment Name
TO separate H2O from the other gases
Objective
V-101
Equipment Number
Dalal AlDughaishem
Designer
Vertical
Type
amine process
Location
Carbon Steel
Material of Construction
Glass wall and quartz
Insulation
820,800
Cost ($)
Operating Condition
14.7
Operating Pressure (psig) 25
Operating Temperature (oC)
Design Considerations
1.236
Gas Density (kg/m3)
996.59
Liquid Density (kg/m3)
0.998
Z factor
Viscosity (cp)
12.8
Liquid Flow rate (MMSCFD)
121.6
Gas Flow rate (MMSCFD)
Dimensions
11.022
Height (m)
4.1923
Diameter (m)

12. Separator
Equipment Name
TO separate the remaining H2O from the other gases
Objective
V-102
Equipment Number
Dalal AlDughaishem
Designer
Vertical
Type
amine process
Location
Carbon Steel
Material of Construction
Glass wall and quartz
Insulation
830,000
Cost ($)
Operating Condition
734.8
Operating Pressure (psig) 30
Operating Temperature (oC)
Design Considerations
63.854
Gas Density (kg/m3)
Liquid Density (kg/m3)
0.9628
Z factor
Viscosity (cp)
3.655
Liquid Flow rate (MMSCFD)
118
Gas Flow rate (MMSCFD)
Dimensions
12.886
Height (m)
4.983
Diameter (m)

13. separator
Equipment Name
TO separate N2 from the other gases
Objective
V-103
Equipment Number
Dalal AlDughaishem
Designer
Vertical
Type
amine process
Location
Carbon Steel
Material of Construction
Glass wall and quartz
Insulation
10300
Cost ($)
Operating Condition
44.09
Operating Pressure (psig)
59.3
Operating Temperature (oC)
Design Considerations
3.174
Gas Density (kg/m3)
Liquid Density (kg/m3)
Z factor
Viscosity (cp)
607.33
Liquid Flow rate (MMSCFD)
0.2335
Gas Flow rate (MMSCFD)
Dimensions
7.773
Height (m)
0.441
Diameter (m)

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. 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
H= (Tray spacing * actual NO. stage ) + D

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. Calculate number of holes.
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.

23. To separate the water from the other gases Objective T-100
Distillation column
Equipment Name
To separate the water from the other gases
Objective
T-100
Equipment Number
Dalal Al-Dughaishem
Designer
Continuous Distillation column
Type
Propylene process
Location
Carbon steel
Material of Construction
minral wool and glass fiber
Insulation
90500 $
Cost ($)
Column Flow Rates
9262.9
Recycle (kgmole/hr)
2936
Feed (kgmole/hr)
943.71
Bottoms (kgmole/hr)
1992.3
Distillate (kgmole/hr)
Key Components
H2O
Heavy
propane
Light
Dimensions
6.18
Height (m)
1.8
Diameter (m)
4.65
Reflux Ratio 10
Number of Trays
Sieve trays
Type of tray
0.5
Tray Spacing
Number of Holes
Cost
700 $
Trays
10600 $
Vessel
16600
Reboiler
62600
Condenser Unit

24. Thank you for listening