Multicomponent Distillation (Fenske-Gilliland-Underwood Method)

PRIMARY COLUMN
Assumptions:
1 Interaction of solids to the bubble point of the solution is negligible
Material Balance
STREAM
#
1
2
3
4
5
6
7
8

COMPONENT
Acetaldehyde
Ethanol
Water
Solids

Mass
DISTILLATE

FEED
m, kg/hr
403.4576
3,631.1182
44,875.2511
2,708.8416

xF
0.0078
0.0703
0.8694
0.0525

51,618.6686
Column Pressure
Bubble point calculation
FEED
#
Component
1 Acetaldehyde
2 Ethanol
3 Water
4 Solids
5
6
7
8

#
1
2
3
4
5
6
7
8

#
1
2
3
4
5
6
7

DISTILLATE
Component
Acetaldehyde
Ethanol
Water
Solids

BOTTOMS
Component
Acetaldehyde
Ethanol
Water
Solids

m, kg/hr
399.5187
3,627.1793
8,203.0689

xD
0.0327
0.2966
0.6707
0.0000

12,229.7669

0.6 atm

P'I, atm

Tb,feed =
Ki = P'i/P
6.2300
10.3833
1.2177
2.0295
0.5356
0.8927

Tb,dist =
Ki = P'i/P

P'I, atm
4.6476
0.7644
0.3302

P'I, atm

83.40 oC
xi

yi = Kixi
0.0078
0.0703
0.8694
0.0525

0.0812
0.1428
0.7761

1.0000

71.64 oC
xi
7.7459
1.2740
0.5503

Tb,bott =
Ki = P'i/P
6.9710
11.6183
1.4526
2.4210
0.6435
1.0726

yi = Kixi
0.0327
0.2966
0.6707
0.0000

0.2530
0.3778
0.3691

1.0000

88.11 oC
xi

yi = Kixi
0.0001
0.0001
0.9310
0.0688

0.0012
0.0002
0.9986

8
=
Dew point calculation
DISTILLATE
#
Component
1 Acetaldehyde
2 Ethanol
3 Water
4 Solids
5
6
7
8

Key components:
#
Component
1 Acetaldehyde
2 Ethanol
3 Water
4 Solids
5
6
7
8

Tb,bott =
Ki = P'i/P

P'I, atm
4.6476
0.7644
0.3302

Key

71.64 oC
yi
7.7459
1.2740
0.5503

Legend:
LK
LNK
HK
HNK

LNK
LK
HK
HNK

1.0000

0.2530
0.3778
0.3691

xi = yi/Ki
0.0327
0.2966
0.6707

1.0000

Light Key
Light Non-Key
Heavy Key
Heavy Non-Key

Mean relative volatility,

ij = Ki(LK)/Kj(HK)
Fij
Dij
Bij
meanij

2.2735
2.3151
2.2572
2.2818

Minimum number of stages, Nmin (Fenske equation)

Nmin

9.0887

Minimum number of stages (Winn's method)

1 top = KLK/(KHK)^LK
LK/HK
2 bottoms = KLK/(KHK)^LK
LK/HK

Nmin
Minimum Reflux, (L/D)min (Underwood method)

10.1745

2.2632 LK

0.9620

2.2632 LK

0.9620

Vapor fraction in the feed, 1-q =

Underwood equation parameter, =
Component

1 Acetaldehyde
2 Ethanol
3 Water
4 Solids
5
6
7
8
*Divide Ki by KHK, such that HK = 1
* should be between the of components
(L/D)min =

0.5
13.8868
zi
14.0760
2.3151
1.0000

z/-
0.0078
0.0703
0.8694
0.0525

xD
0.5815
-0.0141
-0.0675

0.0327
0.2966
0.6707
0.0000

0.5000

1.3192

Minimum Reflux for systems containing distributed nonkeys

Criterion:
DR > 1
0 < DR < 1
DR < 0

Component is nondistributed; contained entirely in distillate.

Component is distributed, DR is the recovery of the component in the distillate.
Component is nondistributed; contained entirely in bottoms.

DXDLK/FzLK =

0.9989

DXDHK/FzHK =

0.1828

Component
1 Acetaldehyde
2 Ethanol
3 Water
4 Solids
5
6
7
8

DR

Remarks
8.2974 ND NK LK
LK
HK
ND NK HK

z/-1

z/-2

1 Lmin + D =
2 Lmin + D =
Lmin/D
Reflux-stages relationships
Gilliland method

YN+Y=N-Nmin
(Y+Nmin)/(1-Y)=N
X
Y

0.0723 Rmin
0.5900 Nmin

R/Rmin
1.3192 R
9.0887 N

Eduljee method

Y
Nmin
N

0.5807442311
9.0887 (from Fenske method)
23.0634

Erbar-Maddox method
R
R/R+1
Rmin
Rmin/Rmin+1
Nmin/N
Nmin
N

1.5
0.6
1.3192 (Winn's method)
0.5688
0.44
10.1745 (Underwood method)
23.1238

Feed stage location (Kirkbridge's method)

NR/NS
N
NS
NR

0.0566
24.0000
22.7137
1.2863

Feed stage location (Fenske method)

mid
bott
av,bot
SS
Nmin,S
N
Nmin
NS
NR
SUMMARY
Column Pressure
Feed Temp
Distillate Temp
Bottoms Temp
mean
Min Stages, Nmin
Fenske
Winn's
(L/D)min
Total Stages, N
Gilliland
Eduljee
Erbar-Maddox
Feed stage
Kirkbridge, NS
Kirkbridge, NR
Fenske, NS
Fenske, NR

2.2735
2.2572
2.2653
6.6245
8.1012
24.0000
9.0887
21.3923
2.6077

0.6 atm
83.40 oC
71.64 oC
88.11 oC
2.2818
9.0887
10.1745 R
1.3192 (Underwood)
23.6067
23.0634
23.1238 R
22.7137 R
1.2863 R
21.3923
2.6077

23.9625071377

BOTTOMS
m, kg/hr
3.9389
3.9389
36,672.1823
2,708.8416

39,388.9017

Mole
DISTILLATE

FEED
xB
0.0001
0.0001
0.9310
0.0688

n, mol/hr
9158.5502
78819.1239
2490993.6794
10564.0810

mole frac
0.0035
0.0304
0.9619
0.0041

2589535.4345

n
9069.1367
78733.6241
455346.5923

543149.3532

356.55 K
yi
0.0812
0.1428
0.7761

344.79 K
yi
0.2530
0.3778
0.3691

361.26 K
yi
0.0012
0.0002
0.9986

DO NOT DELETE
Solver algorithm save file
Step 1
Step 2
1.0000
4
1
0
1
1
1000

1.0000
6
1
0
1
1
0
1
1000

344.79 K
xi
0.0327
0.2966
0.6707

xD/-
2.4305
-0.0593
-0.0520

2.3192

(Molokanov, et al., 1972) Gilliland correlation

1.25
1.6489
23.6067

LHS
RHS
N

0.529343941
0.5826844723
23.1753011971

Mole
DISTILLATE

Volume
BOTTOMS
mole frac
0.0167
0.1450
0.8383

n
89.4134
85.4998
2035647.0871
10564.0810

2046386.0813

FEED
mole frac
0.0000
0.0000
0.9948
0.0052

vol frac

0.0000

Molar Mass, MM
Acetaldehyde
Ethanol
Water
Solids
* 1 lbmol to 453.59237 gmol

Volume
DISTILLATE
W

BOTTOMS
vol frac

0.0000

44.0526 g/mol
46.0690 g/mol
18.0150 g/mol
256.4200 g/mol

vol frac

0.0000

(lb/lbmol)
(lb/lbmol)
(lb/lbmol)
(lb/lbmol)

Assumed value

Project: Ethanol Dehydration Column

By: Engr. Richard V. Magadia, Jr

Biofuels Team, Department of Chemical Engineering

University of the Philippines Los Baos

PHYSICAL DATA FOR ETHANOL AND WATER

f
E

E
r

O
t

H
/

O
2

t
s

@ 1

m
t

Molar Mass, MM
Acetaldehyde
Ethanol
Water
Solids

44.0526 g/mol
46.0690 g/mol
18.0150 g/mol
g/mol

(lb/lbmol)
(lb/lbmol)
(lb/lbmol)
(lb/lbmol)

Viscosity,
Calculated viscosities for each stream
Temp, K

356.55

344.79

361.26

Feed
0.1422

Distillate
0.1529

Bottoms
0.1383

LNK

0.1445

0.0001

Ethanol

0.4069

0.4857

0.3800

LNK

0.4242

0.0003

Water

0.3401

0.3984

0.3207

HK

0.3531

0.0002

Component
Acetaldehyde
, cP

Solids
Note: 1 cP = 1000 Pa-s = 1000 (N-s)/m2

ave, cP

HNK

Liquid Density, L

Distillate
Acetaldehyde
Ethanol
Water

Temp, oC
71.6380
71.6380
71.6380

Temp, K
344.7880
344.7880
344.7880

, lb/ft3
44.2600
46.2978
61.0056

L =

55.1299

Temp, K
361.2579
361.2579
361.2579

, lb/ft3
42.6484
45.2259
60.4708

L =

64.9313

Bottoms
Acetaldehyde
Ethanol
Water

Temp, oC
88.1079
88.1079
88.1079

Vapor Density, v
Using the ideal gas equation,

Distillate
mass frac
Acetaldehyde
Ethanol
Water
Solids

0.0327
0.2966
0.6707
0.0000

Mwmix, lb/lbmol
44.0526
46.0690
18.0150
0.0000
33.7883

Temp, oC
Temp, R
v

71.6380
620.5084
0.2238 lb/ft3

0.0001
0.0001
0.9310
0.0000

Mwmix, lb/lbmol
44.0526
46.0690
18.0150
0.0000
18.9550

Temp, oC
Temp, R
v

88.1079
650.1542
0.1198 lb/ft3

Bottoms
mass frac
Acetaldehyde
Ethanol
Water
Solids

Enthalpies

Distillate
Acetaldehyde

ave, lb/ft-s

Multicomponent Distillation (Fenske-Gilliland-Underwood Method)

DEALDEHYDE COLUMN
Assumptions:

Material Balance
STREAM
#
COMPONENT
1 Acetaldehyde
2 Ethanol
3 Water
4
5
6
7
8

FEED
m, kg/hr
399.5187
3627.1793
8203.0689

xF
0.0327
0.2966
0.6707

12229.7669
Column Pressure
Bubble point calculation
FEED
#
Component
1 Acetaldehyde
2 Ethanol
3 Water
4
5
6
7
8

DISTILLATE
#
Component
1 Acetaldehyde
2 Ethanol
3 Water
4
5
6
7
8

BOTTOMS
#
Component
1 Acetaldehyde
2 Ethanol
3 Water
4
5
6
7

Mass
DISTILLATE
m, kg/hr
xD
399.5069
0.1330
0.0122
0.0000
2603.9831
0.8670

3003.5022

0.25 atm

P'I, atm
2.5507
0.2892
0.1206

P'I, atm
1.5438
0.1268
0.0515

P'I, atm
3.0415
0.3853
0.1623

Tb,feed =
Ki = P'i/P
10.2029
1.1566
0.4825

Tb,dist =
Ki = P'i/P

49.79 oC
xi
0.0327
0.2966
0.6707

yi = Kixi
0.3333
0.3430
0.3237

1.0000

33.63 oC
xi
6.1753
0.5073
0.2060

Tb,bott =
Ki = P'i/P
12.1659
1.5412
0.6494

0.1330
0.0000
0.8670

yi = Kixi
0.8214
0.0000
0.1786

1.0000

55.90 oC
xi
0.0000
0.3931
0.6069

yi = Kixi
0.0000
0.6059
0.3941

8
=
Dew point calculation
DISTILLATE
#
Component
1 Acetaldehyde
2 Ethanol
3 Water
4
5
6
7
8

Key components:
#
Component
1 Acetaldehyde
2 Ethanol
3 Water
4
5
6
7
8

P'I, atm
1.5438
0.1268
0.0515

Key

Tb,bott =
Ki = P'i/P

33.63 oC
yi
6.1753
0.5073
0.2060

Legend:
LK
LNK
HK
HNK

LK
HK
HNK

1.0000

0.8214
0.0000
0.1786

xi = yi/Ki
0.1330
0.0000
0.8670

1.0000

Light Key
Light Non-Key
Heavy Key
Heavy Non-Key

Mean relative volatility,

ij = Ki(LK)/Kj(HK)
Fij
Dij
Bij
meanij

8.821237472
12.174030695
7.8936417707
9.4641243918

Minimum number of plates, Nmin (Fenske equation)

Nmin

9.2457532619

Minimum number of stages (Winn's method)

1 top = KLK/(KHK)^LK
LK/HK
2 bottoms = KLK/(KHK)^LK
LK/HK

Nmin

8.3022

Minimum Reflux, (L/D)min (Underwood method)

9.3437 LK

0.6102

9.3437 LK

0.6102

Vapor fraction in the feed, 1-q =

Underwood equation parameter, =
Component

1 Acetaldehyde
2 Ethanol
3 Water
4
5
6
7
8
*Divide Ki by KHK, such that HK = 1
* should be between the of components
(L/D)min =

0.5
28.2067
zi
29.9775
2.4624
1.0000

z/-
0.0327
0.2966
0.6707

xD
0.5530
-0.0284
-0.0247

0.1330
0.0000
0.8670

0.5000

1.2199

Minimum Reflux for systems containing distributed nonkeys

Criterion:
DR > 1
0 < DR < 1
DR < 0

Component is nondistributed; contained entirely in distillate.

Component is distributed, DR is the recovery of the component in the distillate.
Component is nondistributed; contained entirely in bottoms.

DXDLK/FzLK =

1.0000

DXDHK/FzHK =

0.0000

Component
1 Acetaldehyde
2 Ethanol
3 Water
4
5
6
7
8

DR

Remarks
19.8142 ND NK LK
LK
HK
ND NK HK

z/-1

z/-2

1 Lmin + D =
2 Lmin + D =
Lmin/D
Reflux-stages relationships
Gilliland method

YN+Y=N-Nmin
(Y+Nmin)/(1-Y)=N
X
Y

0.1120 Rmin
0.5250 Nmin

R/Rmin
1.2199 R
9.2458 N

Eduljee method

Y
Nmin
N

0.5330982345
9.2458 (from Fenske method)
20.9441

Erbar-Maddox method
R
R/R+1
Rmin
Rmin/Rmin+1
Nmin/N
Nmin
N

1.5
0.6
1.2199 (Winn's method)
0.5495
0.5
8.3022 (Underwood method)
16.6043

Feed stage location (Kirkbridge's method)

NR/NS
N
NS
NR

1.0762
17.0000
8.1879
8.8121

Feed stage location (Fenske method)

mid
bott
av,bot
SS
Nmin,S
N
Nmin
NS
NR
SUMMARY
Column Pressure
Feed Temp
Distillate Temp
Bottoms Temp
mean
Min Stages, Nmin
Fenske
Winn's
(L/D)min
Total Stages, N
Gilliland
Eduljee
Erbar-Maddox
Feed stage
Kirkbridge, NS
Kirkbridge, NR
Fenske, NS
Fenske, NR

8.8212
7.8936
8.3574
10.4274
4.9113
17.0000
9.2458
9.0302
7.9698

0.25 atm
49.79 oC
33.63 oC
55.90 oC
9.4641
9.2458
8.3022 R
1.2199 (Underwood)
20.5700
20.9441
16.6043 R
8.1879 R
8.8121 R
9.0302
7.9698

43.6955797732

BOTTOMS
m, kg/hr
0.0118
3627.1671
5599.0858

9226.2647

FEED
xB
0.0000
0.3931
0.6069

n
9069.1367
78733.6241
455346.5923

543149.3532

mole frac
0.0167
0.1450
0.8383

Mole
DISTILLATE
n
mole frac
9068.8682
0.0590
0.2655
0.0000
144545.2719
0.9410

153614.4056

322.94 K
yi
0.3333
0.3430
0.3237

306.78 K
yi
0.8214
0.0000
0.1786

329.05 K
yi
0.0000
0.6059
0.3941

DO NOT DELETE
Solver algorithm save file
Step 1
Step 2
1.0000
4
1
1
0
1
1000

0.6102
6
1
1
0
1
1
1
10000

306.78 K
xi
0.1330
0.0000
0.8670

xD/-
2.2517
0.0000
-0.0319

2.2199

1.5
1.8298
20.5700

BOTTOMS
n
mole frac
0.2685
0.0000
78733.3587
0.2021
310801.3204
0.7979

389534.9476

Volume
DISTILLATE

FEED
W

vol frac

0.0000

vol frac

0.0000

Molar Mass, MM
Acetaldehyde
Ethanol
Water
Solids
* 1 lbmol to 453.59237 gmol

44.0526 g/mol
46.0690 g/mol
18.0150 g/mol
256.4200 g/mol

BOTTOMS
W

vol frac

0.0000

(lb/lbmol)
(lb/lbmol)
(lb/lbmol)
(lb/lbmol)

Project: Ethanol Dehydration Column

By: Engr. Richard V. Magadia, Jr

Biofuels Team, Department of Chemical Engineering

University of the Philippines Los Baos

PHYSICAL DATA FOR ETHANOL AND WATER

f
E

E
r

O
t

H
/

O
2

t
s

@ 1

m
t

Molar Mass, MM
Acetaldehyde
Ethanol
Water
Solids

44.0526 g/mol
46.0690 g/mol
18.0150 g/mol
g/mol

(lb/lbmol)
(lb/lbmol)
(lb/lbmol)
(lb/lbmol)

Viscosity,
Calculated viscosities for each stream
Temp, K

322.94

306.78

329.05

Feed
0.1773

Distillate
0.2005

Bottoms
0.1698

LNK

0.1825

0.0001

Ethanol

0.6910

0.9176

0.6240

LNK

0.7442

0.0005

Water

0.5616

0.7605

0.5066

HK

0.6096

0.0004

Component
Acetaldehyde
, cP

Solids
Note: 1 cP = 1000 Pa-s = 1000 (N-s)/m2

ave, cP

HNK

Liquid Density, L

Distillate
Acetaldehyde
Ethanol
Water

Temp, oC
33.6324
33.6324
33.6324

Temp, K
306.7824
306.7824
306.7824

, lb/ft3
47.6381
48.5755
62.0816

L =

59.6749

Temp, K
329.0469
329.0469
329.0469

, lb/ft3
45.7092
47.2712
61.5011

L =

54.9930

Bottoms
Acetaldehyde
Ethanol
Water

Temp, oC
55.8969
55.8969
55.8969

Vapor Density, v
Using the ideal gas equation,

Distillate
mass frac
Acetaldehyde
Ethanol
Water
Solids

Mwmix, lb/lbmol
44.0526
46.0690
18.0150
0.0000
24.7418

Temp, oC
Temp, R
v

33.6324
552.0983
0.1842 lb/ft3

mass frac
Mwmix, lb/lbmol
1.2822371763E-006
44.0526
0.3931349481
46.0690
0.6069
18.0150
0.0000
0.0000
36.7333

Temp, oC
Temp, R
v

55.8969
592.1745
0.2549 lb/ft3

0.1330
0.0000
0.8670

Bottoms
Acetaldehyde
Ethanol
Water
Solids

Enthalpies

Distillate
Acetaldehyde

ave, lb/ft-s

Multicomponent Distillation (Fenske-Gilliland-Underwood Method)

RECTIFYING COLUMN
Assumptions:

Material Balance
STREAM
#
COMPONENT
1 Acetaldehyde
2 Ethanol
3 Water
4
5
6
7
8

FEED
m, kg/hr
0.0118
3627.1789
8203.0689

xF
0.0000
0.3066
0.6934

11830.2596
Column Pressure
Bubble point calculation
FEED
#
Component
1 Acetaldehyde
2 Ethanol
3 Water
4
5
6
7
8

DISTILLATE
#
Component
1 Acetaldehyde
2 Ethanol
3 Water
4
5
6
7
8

BOTTOMS
#
Component
1 Acetaldehyde
2 Ethanol
3 Water
4
5
6
7

Mass
DISTILLATE
m, kg/hr
xD
0.0118
0.0000
3626.5485
0.9377
241.0565
0.0623

3867.6169

3 atm

P'I, atm
15.2884
4.7563
2.2234

P'I, atm
11.4450
3.1049
1.4219

P'I, atm
18.6612
6.3239
2.9997

Tb,feed =
Ki = P'i/P

124.08 oC
xi
5.0961
1.5854
0.7411

Tb,dist =
Ki = P'i/P

0.0000
0.3066
0.6934

yi = Kixi
0.0000
0.4861
0.5139

1.0000

110.20 oC
xi
3.8150
1.0350
0.4740

Tb,bott =
Ki = P'i/P

0.0000
0.9377
0.0623

yi = Kixi
0.0000
0.9704
0.0295

1.0000

134.04 oC
xi
6.2204
2.1080
0.9999

0.0000
0.0001
0.9999

yi = Kixi
0.0000
0.0002
0.9998

8
=
Dew point calculation
DISTILLATE
#
Component
1 Acetaldehyde
2 Ethanol
3 Water
4
5
6
7
8

Key components:
#
Component
1 Acetaldehyde
2 Ethanol
3 Water
4
5
6
7
8

P'I, atm
11.4450
3.1049
1.4219

Key
LK
HK

Tb,bott =
Ki = P'i/P

1.0000

110.20 oC
yi
3.8150
1.0350
0.4740

Legend:
LK
LNK
HK
HNK

0.0000
0.9704
0.0295

xi = yi/Ki
0.0000
0.9377
0.0623

1.0000

Light Key
Light Non-Key
Heavy Key
Heavy Non-Key

Mean relative volatility,

ij = Ki(LK)/Kj(HK)
Fij
Dij
Bij
meanij

3.2143362504
3.6861341828
2.9508830046
3.2699276671

Minimum number of plates, Nmin (Fenske equation)

Nmin

9.2592313379

Minimum number of stages (Winn's method)

1 top = KLK/(KHK)^LK
LK/HK
2 bottoms = KLK/(KHK)^LK
LK/HK

Nmin

16.1222

Minimum Reflux, (L/D)min (Underwood method)

2.1082 LK

0.9529

2.1082 LK

0.9529

Vapor fraction in the feed, 1-q =

Underwood equation parameter, =
Component

1 Acetaldehyde
2 Ethanol
3 Water
4
5
6
7
8
*Divide Ki by KHK, such that HK = 1
* should be between the of components
(L/D)min =

0.5
1.7242
zi
8.0490
2.1836
1.0000

z/-
0.0000
0.3066
0.6934

xD
0.0000
1.4574
-0.9574

0.0000
0.9377
0.0623

0.5000

3.3712

Minimum Reflux for systems containing distributed nonkeys

Criterion:
DR > 1
0 < DR < 1
DR < 0

Component is nondistributed; contained entirely in distillate.

Component is distributed, DR is the recovery of the component in the distillate.
Component is nondistributed; contained entirely in bottoms.

DXDLK/FzLK =

0.9998

DXDHK/FzHK =

0.0294

Component
1 Acetaldehyde
2 Ethanol
3 Water
4
5
6
7
8

DR

Remarks
5.8090 ND NK LK
LK
HK
ND NK HK

z/-1

z/-2

1 Lmin + D =
2 Lmin + D =
Lmin/D
Reflux-stages relationships
Gilliland method

YN+Y=N-Nmin
(Y+Nmin)/(1-Y)=N
X
Y

0.2783 Rmin
0.7000 Nmin

R/Rmin
3.3712 R
9.2592 N

Eduljee method

Y
Nmin
N

0.3867465351
9.2592 (from Fenske method)
15.7292

Erbar-Maddox method
R
R/R+1
Rmin
Rmin/Rmin+1
Nmin/N
Nmin
N

5.0567
0.83489463
3.3712 (Winn's method)
0.7712
0.54
16.1222 (Underwood method)
29.8559

Feed stage location (Kirkbridge's method)

NR/NS
N
NS
NR

0.0880
30.0000
27.5739
2.4261

Feed stage location (Fenske method)

mid
bott
av,bot
SS
Nmin,S
N
Nmin
NS
NR
SUMMARY
Column Pressure
Feed Temp
Distillate Temp
Bottoms Temp
mean
Min Stages, Nmin
Fenske
Winn's
(L/D)min
Total Stages, N
Gilliland
Eduljee
Erbar-Maddox
Feed stage
Kirkbridge, NS
Kirkbridge, NR
Fenske, NS
Fenske, NR

3.2143
2.9509
3.0826
8.6277
7.6638
30.0000
9.2592
24.8309
5.1691

3 atm
124.08 oC
110.20 oC
134.04 oC
3.2699
9.2592
16.1222 R
3.3712 (Underwood)
33.1974
15.7292
29.8559 R
27.5739 R
2.4261 R
24.8309
5.1691

66.3464581923

BOTTOMS
m, kg/hr
0.6304
7962.0123

7962.6428

FEED
xB

n
0.0000
0.0001
0.9999

0.2685
78733.6155
455346.5923

mole frac
0.0000
0.1474
0.8526

534080.4763

Mole
DISTILLATE
n
mole frac
0.2685
0.0000
78719.9312
0.8547
13380.8780
0.1453

92101.0777

397.23 K
yi
0.0000
0.4861
0.5139

383.35 K
yi
0.0000
0.9704
0.0295

407.19 K
yi
0.0000
0.0002
0.9998

DO NOT DELETE
Solver algorithm save file
Step 1
Step 2
1.0000
4
1
1
0
0
1000

1.0000
6
1
1
0
0
0
1
1000

383.35 K
xi
0.0000
0.9377
0.0623

xD/-
0.0000
4.4572
-0.0861

4.3712

1.5
5.0567
33.1974

BOTTOMS
n
mole frac
0.0000
0.0000
13.6843
0.0000
441965.7144
1.0000

441979.3987

Volume
DISTILLATE

FEED
W

vol frac

0.0000

vol frac

0.0000

Molar Mass, MM
Acetaldehyde
Ethanol
Water
Solids
* 1 lbmol to 453.59237 gmol

44.0526 g/mol
46.0690 g/mol
18.0150 g/mol
256.4200 g/mol

BOTTOMS
W

vol frac

0.0000

(lb/lbmol)
(lb/lbmol)
(lb/lbmol)
(lb/lbmol)

Project: Ethanol Dehydration Column

By: Engr. Richard V. Magadia, Jr

Biofuels Team, Department of Chemical Engineering

University of the Philippines Los Baos

PHYSICAL DATA FOR ETHANOL AND WATER

f
E

E
r

O
t

H
/

O
2

t
s

@ 1

m
t

Molar Mass, MM
Acetaldehyde
Ethanol
Water
Solids

44.0526 g/mol
46.0690 g/mol
18.0150 g/mol
g/mol

(lb/lbmol)
(lb/lbmol)
(lb/lbmol)
(lb/lbmol)

Viscosity,
Calculated viscosities for each stream
Temp, K

397.23

383.35

407.19

Feed
0.1145

Distillate
0.1226

Bottoms
0.1093

LNK

0.1155

0.0001

Ethanol

0.2340

0.2800

0.2068

LNK

0.2403

0.0002

Water

0.2204

0.2512

0.2026

HK

0.2247

0.0002

Component
Acetaldehyde
, cP

Solids
Note: 1 cP = 1000 Pa-s = 1000 (N-s)/m2

ave, cP

HNK

Liquid Density, L

Distillate
Acetaldehyde
Ethanol
Water

Temp, oC
110.1975
110.1975
110.1975

Temp, K
383.3475
383.3475
383.3475

, lb/ft3
40.2870
43.6843
59.8219

L =

44.4313

Temp, K
407.1921
407.1921
407.1921

, lb/ft3
37.3613
41.8489
59.3496

L =

59.3476

Bottoms
Acetaldehyde
Ethanol
Water

Temp, oC
134.0421
134.0421
134.0421

Vapor Density, v
Using the ideal gas equation,

Distillate
mass frac
Acetaldehyde
Ethanol
Water
Solids

0.0000
0.9377
0.0623

Mwmix, lb/lbmol
44.0526
46.0690
18.0150
0.0000
61.2750

Temp, oC
Temp, R
v

110.1975
689.9154
0.3650 lb/ft3

Mwmix, lb/lbmol
44.0526
46.0690
18.0150
0.0000
19.0186

Temp, oC
Temp, R
v

134.0421
732.8358
0.1067 lb/ft3

Bottoms
mass frac
Acetaldehyde
Ethanol
Water
Solids

Enthalpies

Distillate
Acetaldehyde

0
7.9172499869E-005
0.9999
0.0000

ave, lb/ft-s

DENSITY EQUATION CONSTANTS

Component
mol wt
C1
Ethanol
46.0690
1.6480
Water
18.0150
5.4590
Water
18.0150
4.9669
Water
18.0150
4.3910
*Table 2-2. Perry's Chemical Engineers' Handbook 7th ed.

C2

C3
513.9200
647.1300
647.1300
647.1300

0.2763
0.3054
0.2779
0.2478

Temp (oC)

C4
0.2331
0.0810
0.1874
0.2534

Temp (oC)
83.40

0.729478
0.978602
0.969432
0.997087

71.64

0.7416447049
0.9821102135
0.977439195
1.0086294694

DIPPR801 Equation Parameters (Density in kg/m 3, T in K)

No.
Acetaldehyde
Ethanol
Water

Primary Column
Feed
Acetaldehyde
Ethanol
Water

1.7114E+00
1.6288E+00
1.7863E+01
-1.39E+01

Temp, oC

2.6355E-01
2.7469E-01
5.8606E+01
6.40E-01

, g/cm3
83.3997
83.3997
356.5497

Distillate
Acetaldehyde
Ethanol
Water

Temp, oC

Bottoms
Acetaldehyde
Ethanol
Water

Temp, oC

, g/cm3

Density of mixture (based on mole frac):

Components

44.2600
46.2978
61.0056 Kelvin

Distillate
Acetaldehyde
Ethanol
Water

42.6484
45.2259
60.4708 Kelvin

Bottoms
Acetaldehyde
Ethanol
Water

, lb/ft3
0.6832
0.7244
0.9686

Density
0.50
0.50
0.8289391521 g/cm3

-1.4126E+02

43.1203
45.5384
60.6222 Kelvin
, lb/ft3

0.7090
0.7416
0.9772

2.8571E-01
2.3178E-01
2.1389E+02
1.82E-06

Dealdehyde Column
Feed
Acetaldehyde
Ethanol
Water

, lb/ft3

, g/cm3

88.1079
88.1079
361.2579

4.6600E+02
5.1400E+02
-9.5396E+01
-1.91E-03

0.6907
0.7295
0.9711

71.6380
71.6380
344.7880

Tmin, K
159.0500
273.1600
333.1500
403.1500

at Tmin
19.4130
55.5830

Tmax, K
513.9200
333.1500
403.1500
647.1300

at Tmax
5.9650
53.7030

Tmin, oC
-114.1
0.01
60
130

Tmax, , oC
240.7700
60.0000
130.0000
373.9800

Temp (oC)
88.11

0.7244709848
0.9771648066
0.9661715775
0.9924072479

Tmin [K]

Tmax [K]

149.78
159.05
273.16

Temp, oC

, g/cm3
49.7887
49.7887
322.9387

Temp, oC

, g/cm3
33.6324
33.6324
306.7824

Temp, oC

, g/cm3
55.8969
55.8969
329.0469

Temp, oC
124.0802
124.0802
397.2302

47.6381
48.5755
62.0816 Kelvin

Distillate
Acetaldehyde
Ethanol
Water

Temp, oC
110.1975
110.1975
383.3475

45.7092
47.2712
61.5011 Kelvin

Bottoms
Acetaldehyde
Ethanol
Water

Temp, oC
134.0421
134.0421
407.1921

, lb/ft3
0.7322
0.7572
0.9852

-123.37
-114.1
0.01

46.2514
47.6369
61.6788 Kelvin
, lb/ft3

0.7631
0.7781
0.9945

Tmin [oC]

Rectifier Column
Feed
Acetaldehyde
Ethanol
Water

, lb/ft3
0.7409
0.7631
0.9880

466
514
647.096

Mol wt
kg/kmol
44.05256
46.06844
18.01528

Acetaldehyde and ethanol

Tmax [oC]

Equation:

192.85
240.85
373.946

, g/cm3

Water

, lb/ft3
0.6190
0.6830
0.9532

, g/cm3

38.6439
42.6408
59.5079
, lb/ft3

0.6453
0.6998
0.9583
, g/cm3

40.2870
43.6843
59.8219
, lb/ft3

0.5985
0.6704
0.9507

37.3613
41.8489
59.3496

LIQUID VISCOSITY
DIPPR801 Equation Parameters (Viscosity in Pa*s, T in K)
No.
Acetaldehyde
Ethanol
Water
Primary Column
Feed
Acetaldehyde
Ethanol
Water

-1.0976E+01
7.8750E+00
-5.2843E+01

Temp, oC

7.5512E+02
7.8198E+02
3.7036E+03

, Pa-s

Temp, oC

Bottoms
Acetaldehyde
Ethanol
Water

Temp, oC

-3.0418E+00
5.8660E+00

-5.8790E-29

0.1422
0.4069
0.3401

, dyne-s/cm2
0.0014
0.0041
0.0034

0.1529
0.4857
0.3984

, dyne-s/cm2
0.0015
0.0049
0.0040

0.1383
0.3800
0.3207

, dyne-s/cm2
0.0014
0.0038
0.0032

, cP

83.3997
83.3997
83.3997

Distillate
Acetaldehyde
Ethanol
Water

0.0001
0.0004
0.0003
, Pa-s

, cP

71.6380
71.6380
71.6380

0.0002
0.0005
0.0004
, Pa-s

, cP

88.1079
88.1079
88.1079

0.0001
0.0004
0.0003

1.0000E+01

VAPOR VISCOSITY
DIPPR801 Equation Parameters (Viscosity in Pa*s, T in K)
No.
Acetaldehyde
Ethanol
Water
Primary Column
Feed
Acetaldehyde
Ethanol
Water

1.9703E-05
1.0613E-07
1.7096E-08

Temp, oC

1.7646E-01
8.0660E-01
1.1146E+00

, Pa-s
83.3997
83.3997
83.3997

Distillate
Acetaldehyde
Ethanol
Water

Temp, oC

Bottoms
Acetaldehyde
Ethanol
Water

Temp, oC

1.5646E+03
5.2700E+01

, cP
1.03E-05
1.02E-05
1.20E-05

, Pa-s
71.6380
71.6380
71.6380

0.0103
0.0102
0.0120

, dyne-s/cm2
0.0001
0.0001
0.0001

0.0100
0.0099
0.0115

, dyne-s/cm2
0.0001
0.0001
0.0001

0.0104
0.0103
0.0121

, dyne-s/cm2
0.0001
0.0001
0.0001

, cP
9.98E-06
9.91E-06
1.15E-05

, Pa-s
88.1079
88.1079
88.1079

, cP
1.04E-05
1.03E-05
1.21E-05

Tmin [K]

Tmax [K]

149.78
200
273.16
Dealdehyde Column
Feed
Temp, oC
, Pa-s
Acetaldehyde
49.7887
Ethanol
49.7887
Water
49.7887

0.0002
0.0007
0.0006

Distillate
Temp, oC
, Pa-s
Acetaldehyde
33.6324
Ethanol
33.6324
Water
33.6324

0.0002
0.0009
0.0008

Bottoms
Temp, oC
, Pa-s
Acetaldehyde
55.8969
Ethanol
55.8969
Water
55.8969

0.0002
0.0006
0.0005

466
440
646.15

, cP

-123.37
-73.15
0.01

Tmax [oC]
192.85
166.85
373
Rectifier Column
Feed
Acetaldehyd
Ethanol
Water

0.2005
0.9176
0.7605

, dyne-s/cm2
0.0020
0.0092
0.0076

Distillate
Acetaldehyd
Ethanol
Water

0.1698
0.6240
0.5066

, dyne-s/cm2
0.0017
0.0062
0.0051

Bottoms
Acetaldehyd
Ethanol
Water

, cP

Tmax [K]

149.78
200
273.16

Tmin [oC]

, dyne-s/cm2
0.1773
0.0018
0.6910
0.0069
0.5616
0.0056

, cP

Tmin [K]

Mol wt
kg/kmol
44.05256
46.06844
18.01528

1000
1000
1073.15

Mol wt
kg/kmol
44.05256
46.06844
18.01528

Tmin [oC]
-123.37
-73.15
0.01

Tmax [oC]
726.85
726.85
800

Dealdehyde Column
Feed
Temp, oC
, Pa-s
, cP
Acetaldehyde
83.3997
1.03E-05
Ethanol
83.3997
1.02E-05
Water
83.3997
1.20E-05

, dyne-s/cm2
0.0103
0.0001
0.0102
0.0001
0.0120
0.0001

Rectifier Column
Feed
Acetaldehyd
Ethanol
Water

Distillate
Temp, oC
, Pa-s
, cP
Acetaldehyde
71.6380
9.98E-06
Ethanol
71.6380
9.91E-06
Water
71.6380
1.15E-05

0.0100
0.0099
0.0115

, dyne-s/cm2
0.0001
0.0001
0.0001

Distillate
Acetaldehyd
Ethanol
Water

Bottoms
Temp, oC
, Pa-s
, cP
Acetaldehyde
88.1079
1.04E-05
Ethanol
88.1079
1.03E-05
Water
88.1079
1.21E-05

0.0104
0.0103
0.0121

, dyne-s/cm2
0.0001
0.0001
0.0001

Bottoms
Acetaldehyd
Ethanol
Water

EQN
101
101
101

Temp, oC
, Pa-s
124.0802
124.0802
124.0802

0.0001
0.0002
0.0002

, cP
0.1145
0.2340
0.2204

, dyne-s/cm2
0.0011
0.0023
0.0022

Temp, oC
, Pa-s
110.1975
110.1975
110.1975

0.0001
0.0003
0.0003

0.1226
0.2800
0.2512

, dyne-s/cm2
0.0012
0.0028
0.0025

Temp, oC
, Pa-s
134.0421
134.0421
134.0421

0.0001
0.0002
0.0002

0.1093
0.2068
0.2026

, dyne-s/cm2
0.0011
0.0021
0.0020

Temp, oC
, Pa-s
, cP
83.3997
1.03E-05
83.3997
1.02E-05
83.3997
1.20E-05

0.0103
0.0102
0.0120

, dyne-s/cm2
0.0001
0.0001
0.0001

Temp, oC
, Pa-s
, cP
71.6380
9.98E-06
71.6380
9.91E-06
71.6380
1.15E-05

0.0100
0.0099
0.0115

, dyne-s/cm2
0.0001
0.0001
0.0001

Temp, oC
, Pa-s
, cP
88.1079
1.04E-05
88.1079
1.03E-05
88.1079
1.21E-05

0.0104
0.0103
0.0121

, dyne-s/cm2
0.0001
0.0001
0.0001

, cP

, cP

EQN
102
102
102

Antoine's Equation Constants

Substance

T min, oC

T max, oC

Water(b)
Water
Ethanol(b)
Ethanol

8.0713
8.1402
8.1122
7.5867

1730.6300
1810.9400
1592.864
1281.59

233.4260
244.4850
226.184
193.768

1
99
20
78

100
374
93
203

Ethanol
Ethanol(b)

8.20417
7.68117

1642.89
1332.04

230.3
199.2

-57
77

80
243

A
5.29E+01
7.33E+01
7.36E+01

B
-4.64E+03
-7.12E+03
-7.26E+03

C
-4.51E+00
-7.14E+00
-7.30E+00

D
2.70E-17
2.89E-06
4.17E-06

E
6.00E+00
2.00E+00
2.00E+00

Acetaldehyde
Ethanol
Water
PRIMARY COLUMN
Feed
T, oC
Acetaldehyde
Ethanol
Water

18.07
58.68
58.68

T min, oC
-123.37
-114.1
0.01
DEALDEHYDE COLUMN
Feed

P, kPa
P, mmHg
T, K
83.40 356.549721373 700.908065756 5257.24283222
83.40 356.549721373 123.384490338 925.459784428
83.40 356.549721373 54.2715777044 407.07030896

Distillate

Acetaldehyde
Ethanol
Water
Distillate

T, oC
Acetaldehyde
Ethanol
Water

P, kPa
P, mmHg
T, K
71.64 344.788021339 517.599106018 3882.31256426
71.64 344.788021339 77.4524136177 580.940876876
71.64 344.788021339 33.4552514064 250.935021652

Bottoms

Acetaldehyde
Ethanol
Water
Bottoms

T, oC
Acetaldehyde
Ethanol
Water

liquid molar
volume (vL),
cm3/ gmol

P, kPa
P, mmHg
T, K
88.11 361.257879238 786.441200543 5898.79410228
88.11 361.257879238 147.185796928 1103.98426514
88.11 361.257879238 65.2070919887 489.0934114127

Acetaldehyde
Ethanol
Water

Source(s)

Perry's 8th ed
DIPPR
Perry's 8th ed
Perry's 8th ed

DIPPR
DIPPR

T max, oC
192.85
240.85
373.946

ALDEHYDE COLUMN
T, oC

P, kPa
P, mmHg
T, K
49.79 322.938701595 275.44356947 2065.99667207
49.79 322.938701595 29.2989798529
219.7604213
49.79 322.938701595 12.2229524647 91.6796829327

RECTIFIER COLUMN
Feed
T, oC
Acetaldehyde
Ethanol
Water

124.08
124.08
124.08

Distillate
T, oC

P, kPa
P, mmHg
T, K
33.63 306.782407138 161.48030452 1211.20188932
33.63 306.782407138 12.8493546597 96.3780857769
33.63 306.782407138 5.2181879094 39.1396280402

T, oC
Acetaldehyde
Ethanol
Water

110.20
110.20
110.20

Bottoms
T, oC

P, kPa
P, mmHg
T, K
55.90 329.046947792 331.7831187552 2488.57804346
55.90 329.046947792 39.0413005915 292.833836166
55.90 329.046947792 16.4490873569 123.378301419

T, oC
Acetaldehyde
Ethanol
Water

134.04
134.04
134.04

P, kPa
P, mmHg
T, K
397.230216032 1719.39236034 12896.5032703
397.230216032 481.935135051 3614.81078351
397.230216032 225.283964537 1689.76869527

P, kPa
P, mmHg
T, K
383.347452701 1295.09849212 9714.03754269
383.347452701 314.600753094 2359.69970246
383.347452701 144.07502073 1080.65152484

P, kPa
P, mmHg
T, K
407.192136975 2081.97688013 15616.1108206
407.192136975 640.771900021 4806.1844956
407.192136975 303.948332836 2279.79997982

DIPPR106 Equation Parameters (Surface Tension in mN/m, T in K)

No.
Acetaldehyde
Ethanol
Water

Feed
Ethanol
Water

A
3.76E-02
131.38
134.15
131.38

Temp, oC

B
-2.16E-05
5.5437
1.6146
5.5437

Temp, K

C
-1.03E-07
-8.4826
-2.035
-8.4826

Tr

Tc

E
4.3164
1.5598
4.3164

84.60
84.60

357.75
357.75

0.69
0.55

, dyne/cm
16.8662
61.6548

Distillate
Ethanol
Water

79.25
79.25

352.40
352.40

0.68
0.54

17.3357
62.6238

Bottoms
Ethanol
Water

99.97
99.97

373.12
373.12

0.72
0.58

15.4644
58.8165

0
0
0

516.2
647.3
516.2

Correlation equation for the Surface Tension of Water-Organic Alcohol mixtures (Ghahremani, et al. , 2011)

System
H20 + EtOH

b
-3.059

c
2.415

d
-6.841

21.94

where x = log(mass frac of alcohol in H20)

Brock and Bird equation

Tc, K
Pc, atm
Vc, L/mol
Zc
Ethanol
513.9000
60.6760
0.1670
Water
647.1000
217.6659
0.0559
Source: Smith, Van Ness, & Abbott (2005)
Feed
Ethanol
Water

mole frac
Temp
0.0703
0.8694

Tcm

Distillate
Ethanol
Water

mole frac
Temp, K
0.2966
344.79
0.6707
344.79

Bottoms
Ethanol

mole frac
Temp, K
0.0001
361.26

356.55
356.55

0.2400
0.2290

Pcm

Vcm

598.7138

193.4985

0.0603

586.4554

163.9943

0.0870

602.5198

202.6592

0.0521

Water

0.9310

361.26

B
1.42E+00
-0.00002157
2.57E+00

C
-1.99E-01
-1.025E-007
-3.34E+00

DIPPR 801
No.
Acetaldehyde
Ethanol
Water

A
7.72E-02
0.03764
1.78E-01

PRIMARY COLUMN
Feed
T, oC
Acetaldehyde
Ethanol
Water

, mN/m
T, K
83.40 356.549721373
12.2139
83.40 356.549721373
16.9186
83.40 356.549721373
61.4429

Distillate

Tc

466
514
647.096

1.97E+00

DEALDEHYDE COLUMN
Feed
T, oC
Acetaldehyde
49.79
Ethanol
49.79
Water
49.79
Distillate

T, oC
Acetaldehyde
Ethanol
Water

, mN/m
T, K
71.64 344.788021339
13.8142
71.64 344.788021339
18.0178
71.64 344.788021339
63.6941

Bottoms

T, oC
Acetaldehyde
Ethanol
Water

33.63
33.63
33.63

Bottoms
T, oC

Acetaldehyde
Ethanol
Water

, mN/m
T, K
88.11 361.257879238
11.5839
88.11 361.257879238
16.4707
88.11 361.257879238
60.5396

T, oC
Acetaldehyde
Ethanol
Water

55.90
55.90
55.90

Tmin, K

Tmax, K
180
233
180

Zcm

Tmin, oC
513
643
513

Trm
0.2346

0.5955

0.2927

0.5879

0.2106

0.5996

-273.15
-93.15
-40.15

Tmax, oC
-273.15
239.85
369.85

106
Tmin, K
149.78
273.15
273.16

Tmax, K
466
503.15
647.096

, mN/m
T, K
322.938701595
16.8847
322.938701595
19.9845
322.938701595
67.8764

Eqn
106
100
106

Tmin, oC
-123.37
0
0.01

Tmax, oC
192.85
230
373.946

RECTIFIER COLUMN
Feed
T, oC
Acetaldehyde
Ethanol
Water

, mN/m
T, K
124.08 397.230216032
6.9898
124.08 397.230216032
12.8981
124.08 397.230216032
53.5434

Distillate
, mN/m
T, K
306.782407138
19.2342
306.782407138
21.3759
306.782407138
70.9940

T, oC

, mN/m
T, K
110.20 383.347452701
8.7146
110.20 383.347452701
14.3083
110.20 383.347452701
56.2685

T, oC

, mN/m
T, K
134.04 407.192136975
5.7941
134.04 407.192136975
11.8618
134.04 407.192136975
51.5623

Acetaldehyde
Ethanol
Water
Bottoms

, mN/m
T, K
329.046947792
16.0137
329.046947792
19.4446
329.046947792
66.7051

Acetaldehyde
Ethanol
Water

(N/m)

100 (N/m)

PPDS12 Equation Parameters (Heat of Vaporization in J/mol, T in K)

No.
Ethanol
Water

B
9.1919
5.6297

2.8118
13.962

8.6931
-11.673

357.75
357.75

Hvap, J/mol
38,678.03
41,350.54

E
-11.776
2.1784

-31.745
-0.31666

Tc
516.2
647.3

FEED
Temp, oC
Ethanol
Water

Temp, K
84.60
84.60

DISTILLATE
Temp, oC
Ethanol
Water

Temp, K

Hvap, J/mol
352.40
39,131.83
352.40
41,598.85

Temp, K

Hvap, J/mol
373.12
37,247.21
373.12
40,616.67

79.25
79.25

BOTTOMS
Temp, oC
Ethanol
Water

99.97
99.97

DIPPR 801
No.
Acetaldehyde
Ethanol
Water

A
3.4088E+07
6.5831E+07
5.6600E+07

B
4.3317E-02
1.1905E+00
6.1404E-01

C
2.1502E-01
-1.7666E+00
-6.1204E-01

Temp, oC
83.40
83.40
83.40

Temp, K
356.55
356.55
356.55

Tr

Temp, oC
71.64
71.64
71.64

Temp, K
344.79
344.79
344.79

Tr

Temp, oC
88.11
88.11
88.11

Temp, K
361.26
361.26
361.26

Tr

D
2.3791E-01
1.0012E+00
3.9880E-01

PRIMARY COLUMN
Feed
Acetaldehyde
Ethanol
Water
Distillate
Acetaldehyde
Ethanol
Water
Bottoms
Acetaldehyde
Ethanol
Water

0.7651
0.6937
0.5510

Hvap, J/kmol
2.0616E+07
3.8801E+07
4.1158E+07

Hvap, J/mol
20,616.23
38,801.44
41,157.75

0.7399
0.6708
0.5328

Hvap, J/kmol
2.1780E+07
3.9665E+07
4.1709E+07

Hvap, J/mol
21,779.88
39,664.82
41,708.88

0.7752
0.7028
0.5583

Hvap, J/kmol
2.0127E+07
3.8436E+07
4.0932E+07

Hvap, J/mol
20,126.69
38,435.73
40,932.34

Tc ,K
466.00
514.00
647.10

Tmin

Tmax
273
273

516
647

Tmin ,K
149.78
159.05
273.16

Tmax ,K
466.00
514.00
647.10

DEALDEHYDE COLUMN
Feed
Temp, oC
Acetaldehyde
49.79
Ethanol
49.79
Water
49.79
Distillate
Temp, oC
Acetaldehyde
33.63
Ethanol
33.63
Water
33.63
Bottoms
Temp, oC
Acetaldehyde
55.90
Ethanol
55.90
Water
55.90

Temp, K
322.94
322.94
322.94

Tr

Temp, K
306.78
306.78
306.78

Tr

Temp, K
329.05
329.05
329.05

Tr

0.6930
0.6283
0.4991

Hvap, J/kmol
2.3734E+07
4.1109E+07
4.2693E+07

Hvap, J/mol
23,733.75
41,109.45
42,692.66

0.6583
0.5969
0.4741

Hvap, J/kmol
2.5020E+07
4.2074E+07
4.3392E+07

Hvap, J/mol
25,020.06
42,074.45
43,391.98

0.7061
0.6402
0.5085

Hvap, J/kmol
2.3213E+07
4.0724E+07
4.2422E+07

Hvap, J/mol
23,213.32
40,723.73
42,422.40

RECTIFIER COLUMN
Feed
Temp, oC
Acetaldehyde
124.08
Ethanol
124.08
Water
124.08
Distillate
Temp, oC
Acetaldehyde
110.20
Ethanol
110.20
Water
110.20
Bottoms
Temp, oC
Acetaldehyde
134.04
Ethanol
134.04
Water
134.04

Temp, K
397.23
397.23
397.23

Tr

Temp, K
383.35
383.35
383.35

Tr

Temp, K
407.19
407.19
407.19

Tr

0.8524
0.7728
0.6139

Hvap, J/kmol
1.5872E+07
3.5160E+07
3.9104E+07

Hvap, J/mol
15,872.31
35,159.52
39,103.78

0.8226
0.7458
0.5924

Hvap, J/kmol
1.7631E+07
3.6537E+07
3.9834E+07

Hvap, J/mol
17,630.76
36,537.21
39,833.58

0.8738
0.7922
0.6293

Hvap, J/kmol
1.4503E+07
3.4064E+07
3.8559E+07

Hvap, J/mol
14,503.28
34,063.91
38,558.81

Ethanol

Water

Component
Formula

C2H6O

Molar Mass

CAS
Registry
Number

46.069 64-17-5

Name

Ethanol

Data Table
T [K]

P [kPa]

Molar
Enthalpy
[J/mol]

State

Reference

394.26

Superheated
49613.5 Liquid

394.26

689.473

Superheated
13180.2 Liquid

394.26

1378.95

Superheated
13180.2 Liquid

394.26

2068.42

Superheated
13180.2 Liquid

409.81

689.473

15859.2 Liquid

409.81

689.473

48541.9 Vapor

422.04

Superheated
52185.2 Liquid

422.04

689.473

Superheated
50256.4 Liquid

422.04

1378.95

Superheated
17788 Liquid

422.04

2068.42

Superheated
17788 Liquid

422.04

2757.89

Superheated
17788 Liquid

422.04

3447.37

Superheated
17788 Liquid

437.04

1378.95

20145.4 Liquid

437.04

1378.95

49399.1 Vapor

449.82

Superheated
54649.8 Liquid

449.82

689.473

Superheated
53149.6 Liquid

449.82

1378.95

Superheated
51328 Liquid

449.82

2068.42

Superheated
22717.2 Liquid

449.82

2757.89

Superheated
22717.2 Liquid

449.82

3447.37

Superheated
22717.2 Liquid

449.82

4136.84

Superheated
22717.2 Liquid

455.37

2068.42

23681.6 Liquid

455.37

2068.42

49720.6 Vapor

470.37

2757.89

26682 Liquid

470.37

2757.89

49934.9 Vapor

477.59

Superheated
57221.6 Liquid

477.59

689.473

Superheated
56150 Liquid

477.59

1378.95

Superheated
54864.1 Liquid

477.59

2068.42

Superheated
53471.1 Liquid

477.59

2757.89

Superheated
51649.4 Liquid

477.59

3447.37

Superheated
28503.6 Liquid

477.59

4136.84

Superheated
28503.6 Liquid

477.59

4826.31

Superheated
28503.6 Liquid

477.59

5515.79

Superheated
28503.6 Liquid

482.59

3447.37

29575.2 Liquid

482.59

3447.37

50042.1 Vapor

493.15

4136.84

31932.6 Liquid

493.15

4136.84

49720.6 Vapor

501.48

4826.31

33968.6 Liquid

501.48

4826.31

48756.2 Vapor

508.7

5515.79

35468.8 Liquid

508.7

5515.79

47256 Vapor

514.81

6205.26

38683.5 Liquid

514.81

6205.26

44255.6 Vapor

516.48

6391.42

41576.7 Liquid

List of
References
Number

Source

Smith J.M.:
Enthalpy of
Hydrocarbon
-Alcohol
Systems.
J.Chem.Eng.
Data 5
(1960) 1331 137

Vapor Pressure
lnP=C1+(C2/T)+C3lnT+C4T^C5
UNITS: P in Pa and T in K
Component
C1
C2
C3
C4
C5
1 Acetaldehyde
193.69
-8036.7
-29.502 4.3678E-02
2 Ethanol
73.304
-7122.3
-7.1424 2.8853E-06
3 Water
73.649
-7258.2
-7.3037 4.1653E-06

1
2
2

Tmin, K
Tmax, K
150.15
466
159.05
514
273.16 647.096