1. Supervised By: Prof. M. A. FahimEng. Yusuf Ismail
Hysys report
Mohammed Al-Mohsen
Yaqoub Bader Ali
Mohammed Al-Faraj
Nasser Al-Ajmi
Ali Shamsaldein
Supervised By: Prof. M. A. FahimEng. Yusuf Ismail

2. Outline: Description of flowsheet.
Comparison between Hysys and SRI results.
Comparison of overall Hysys and hand calculated result.
Comparison between conversion and equilibrium reactor results.
Overall Conclusion of Hysys.

3. Description of flowsheet:
Pre-distillation section
Reaction section
Distillation section

4. Reaction section: Alkylaion Reaction Trans Alkylation Reaction
Side Reaction:

5. Pre-distillation section:
Vent Gas scrubber
Flash Drum
Heat Exchanger

6. Distillation section:
Benzene Column
Ethylbenzene column
Polyethylbenzene Column

7. Comparison between Hysys and SRI results.
Benzenee
Ethylene
Benzene-REC
(RTA)
(RA)
Vapor-LP
Poly REC(5)
RTA-product
RA-LP E4
RA-Product
RA-RTA(3)
Waste water
Light paraffins 39
11.787
36.059
18.4
12.636
46.309 40
0.2739
39246
12716
Benzene
1.79*10^5
50198
54450
1447.3
46836
50807
6.27*10^5
6.1015*10^5
698.42
Ethylbenzene
618.2
9617
4492
11203
7014
137510
1.442*10^5
Xylenes
5776
Polyethylbenzene
71.283
194.8
5639.8
5568.5
Water 55 50
0.56
8.827
13.659
0.567
6.315
16.2
21.21
8.1182
0.01
Heavies
1.85
1449.5
1449.4
Total
109054
50818
7223.2
697.99
Error%
0.12
15.4
26.28
3.42
39.69
0.027
2.65
0.9699
1295.8

8. Vent-gas
Benzene-rec(1)
Bottoms1
Light paraffins
52.438
12.755
Ethylene
Benzene
1444.1
8.3109*10^5
527.7
Ethylbenzene
10305
*10^5
Xylenes
Polyethyl benzene
5834.7
Water
72.761
9.45
Heavies
14513
Total
Error%
152.3
90.38
2.08

9. 1 2 3 4 5 6 7 8 9
Light paraffins - 39 44
361 73 13
Ethylene
39,246 11 18
12,728
Benzene
108,999
50,561
785,369
68,595
47,029
36,020
Ethylbenzene
2,988
9,616
5,560
2,369
12,590
5,196
Xylenes
Polyethylbenzene
6,532
101
463
151
Water 55
Heavies 10 19
Total
109,054
39,285
60,096
795,041
74,626
8,913
60,097
41,479
12,741

10. 10 11 12 13 14 15 16 17 18
Light paraffins
400 41 -
429 47
Ethylene 5 1
Benzene
544,221
622,656
192
835,930
148
Ethylbenzene
140,503
147,533
10,235
148,054
2,369
145,685
Xylenes 30 31
Polyethylbenzene
5,996
6,358
6,610
6,608 76
Water 50
Heavies
1,694
1,700
1,723
1,713
Total
792,848
778,319
638
846,224
156,567
10,702
1,789
145,865

11. Comparison between conversion and equilibrium reactor results.
Conversion reactor.

12. Transalkylation reactor
Equilibrium reactor
Conversion reactor
First stage
T= c
M= E5 kg/hr
EB= Lb/hr
T= c
EB= Lb/hr
Second stage
T= c
M= E5 kg/hr
T= c
EB= Lb/hr
Third stage
T= 261.4c
M= 3.722E5 kg/hr
T= c
EB= E5 Lb/hr
Fourth stage
T= c
M= E5 kg/hr
T= c
EB= E5 Lb/hr
Transalkylation reactor
T= c
M= kg/hr
EB= Lb/hr
T= c
EB= Lb/hr

13. Conversion reactor Equilibrium reactor
• Ethylene is consumed after each stage in the reactor.
• Polyethylbenzene and methane are increased as well.
• Overall reaction phase was used.
• Ethylene is increased after each stage in the reactor.
• Methane is increased as well.
• Ethylbenzene is produced after the first stage.
• Vapor phase reaction was used to activate the equilibrium reactor.
•Conversion reactor is better than equilibrium reactor because of high production of ethylbenzene.

14. Comparison of overall Hysys and hand calculated result
Total Benzene Mass Balance:
Total benzene in = Ib/hr
Benzene in Outlet streams:
Vent gas = Ib/hr
Waste water = Ib/hr
EthylBenzene = Ib/hr
Residue to fuel = 0 Ib/hr
Amount of Benzene Converted = Ib/hr
% Benzene converted = / x 100 = %

15. Total Ethylene Mass Balance:
Total Ethylene In = Ib/hr
Ethylene in outlet streams
Vent gas = 0 Ib/hr
Waste water = 0 Ib/hr
Ethylbenzene = 0 Ib/hr
Residue to fuel = 0 Ib/hr
% Ethylene converted = 100%

16. Ethylbenzene produced = 143610 Ib/hr
Total Benzene in = Ib/hr
Total Ethylene in = Ib/hr
Amount of Ethylbenzene produced = ( ) = Ib/hr
Comparison:
Difference = Calculated – Simulated
= – = Ib/hr

17. Overall Conclusion of Hysys.
Hysys is a good software for simulating chemical processes such as the producing of ethylbenzene.
The SRI value of ethylbenzene produced is Ib/hr while the Hysys value is Ib/hr.
The error between the ethylbenzene produced by SRI data and Hysys is 1.13%

18. The hypothetical function in Hysys is used to define unrecognizable compounds .
Some equipments has been added to rise the pressure of some streams.
Each stage in the alkylation reactor is treated as a single reactor.
The lost amount of EB is recovered through the bottom of the 2nd distillation column as recovery of the top was set to 99%.

19. Ethylene feeds ratio in each stage has been adjusted to insure fully conversion.
Cooler after each stage are used in the alkylation reactor to keep liquid phase in range between 250C – 270C.
Conversion reactor is better than equilibrium reactor because of the high production rate of ethylbenzene and the fully conversion of ethylene.

20. Thank You