1. CHE 451 CHEMICAL ENGINEERING DESIGN ASSIGMENT 4: DISTILLATION COLUMN DESIGN
Prof. Dr. Bekir Zühtü UYSAL
Res. Asist. Melda ESKİTOROS
EMRE AKASLAN

2. INDEX AIM CHEMCAD FLOW CHART DESIGN VALUES COLUMN PROPERTIES
METHOD OF CALCULATIONS
ASSUMPTIONS
COLUMN RESULTS
DETAILED FLOW CHART
BASIC RESULTS
CHEMCAD RESULTS
ECONOMICAL CALCULATIONS RESULTS
FOR STEAM COST 40 TL/ton
FOR STEAM COST 16 TL/ton
COMPARING OF PROGRAMS RESULTS

3. AIM:
IN THIS PROJECT, THE AIM IS TO DESIGN THE OPTİMUM ECONOMICAL DISTILLATION COLUMN FOR SEPERATION OF ACETONE, ETHANOL AND WATER MIXTURE. THIS MIXTURE IS DESIRED TO BE DISTILLED TO 99.9% PURE COMPONENTS.

4. CHEMCAD FLOW CHART

5. DESIGN VALUES: FEED AT FIRST COLUMN: 190 ton/h TEMPERATURE: 145 oC
COMPONENTS
WT%
ACETONE
1.2
BUTHANOL
2.4
ETHANOL
0.4
WATER
2.8
MESITHYLENE
93.2

6. FEED AT THIRD COLUMN: 351 kmol/h TEMPERATURE: 96.45 oC q: 1 and f: 0
DESIGN VALUES:
FEED AT THIRD COLUMN: 351 kmol/h TEMPERATURE: oC q: 1 and f: 0
FEED STREAM x
Flow (kmol/h)
Acetone
0,1118
39,2418
Ethanol
0,047
16,497
Water
0,8412
295,2612
Total 1
351

7. DESIGN VALUES:
LIGHT KEY: ETHANOL HEAVY KEY: WATER DECIDED: XD(WATER): XB(ETHANOL):

8. MATERIAL BALANCE RESULTS:
D: kmol/h B: kmol/h
TOP STREAM (T=65,66 C)
BOTTOM STREAM (T=104,36 C) y
Flow (kmol/h) x
Acetone
0,7043
39,243596
0,0000
Ethanol
0,2956
16,470832
0,0001
0,029528
Water
0,005572
0,9999
295,250472
Total 1
55,72
1,0000
295,28

9. COLUMN PROPERTIES 304 STAINLESS STEEL PLATE DISTILLATION COLUMN
MULTICOMPONENT DISTILLATION COLUMN
PARTIAL REBOİLER
PARTIAL CONDENSER
SIEVE TRAY

10. METHOD OF CALCULATIONS
CALCULATE HEIGHT OF THE COLUMN
CALCULATE DIAMETER FOR BOTTOM AND TOP
PEC = COLUMN + CONDENSER + REBOİLER + PUMP
UTILITIES = STEAM, WATER AND ELECTRIC COST
DETAILED ECONOMICAL ANAYLYSIS
PLATE DESIGN TO FIND IF THEIR IS WEEPING, FLOATING AND ACTUAL PRESSURE DROP

11. ASSUMPTIONS hw= 0.05 m F*= 0.80 For partial condenser U=750 W/m2K
For partial reboiler U= 1200 W/m2K
Pump efficiency = 0.75

12. COLUMN RESULTS Feed, kmol/h 351 Distillate, kmol/h 55.71
Bottom, kmol/h
295.29
x(acetone),F
0.1118
x(acetone),D
0.7043
x(acetone),B
x(ethanol),F
0.047
x(ethanol),D
0.2956
x(ethanol),B
0.0001
x(water),F
0.8412
x(water),D
x(water),B
0.9999
Partial Condenser
Partial Reboiler
Flows in Column
Operating
Temperature. oC
65.66
Operating Temperature.°C
104.36
Lo, kg/s
8.59
Operating Pressure. atm
1.15
1.18
V1, kg/s
9.43
Duty. kW
3103.5
3162.6
Lm, kg/s
10.92
U W/m2-K
750
1200
Vm, kg/s
9.42
m(water) kg/s
35.37
m(steam) kg/s
1.46
Column Properties
Plate Properties
RDmin
9.697
Number of Plates 59
ΔPdry (cm liq. column)
2.389
RD/RDmin
1.1
Feed Plate 42
Δptotal (cm liq. column)
9.236 RD
10.67
Height.m
27.5
Number of holes
64106
Nmin 20
Diameter.m
3.8
Ntheoretical 47

13. DETAILED FLOW CHART

14. BASIC RESULTS

16. CHEMCAD RESULTS

17. CHEMCAD SENSITIVITY ANALYSIS

18. ECONOMICAL RESULTS

19. DETAILED COST ANALYSIS FOR STEAM COST 40 TL/ton
Direct costs
Purchased Equipment TL
Installation
Instrumentation and Controls
Piping
Electrical, Installed
TOTAL DIRECT COST
Indirect Costs
Engineering and Supervision
Construction Expense and Contractor's Fee
Contingency
TOTAL INDIRECT COST
FIXED-CAPITAL INVESTMENT(TL)
Depreciation
TL/yr
Insurance
29 515
FIXED-CHARGES
Maintenance and Repairs
Utilities
OPERATING COST
TOTAL ANNUAL COST(TL/year)

21. DETAILED COST ANALYSIS FOR STEAM COST 16 TL/ton
Direct costs
Purchased Equipment TL
Installation
Instrumentation and Controls
Piping
Electrical, Installed
TOTAL DIRECT COST
Indirect Costs
Engineering and Supervision
Construction Expense and Contractor's Fee
Contingency
TOTAL INDIRECT COST
FIXED-CAPITAL INVESTMENT(TL)
Depreciation
TL/yr
Insurance
29 515
FIXED-CHARGES
Maintenance and Repairs
Utilities
OPERATING COST
TOTAL ANNUAL COST(TL/year)

22. COMPARATIONS FOR PROGRAM’ S CALCULATIONS

23. THANK FOR YOUR ATTENTION
Prof. Dr. Bekir Zühtü UYSAL
Res. Asist. Melda ESKİTOROS