Perhitungan Neraca Energi

Alat Heater Kode

Meningkatkan Temperatur Panas
Fungsi H - 101

Tin = 303,15 K/ 30 oC

Tout =473,15 K/ 200 oC 453,05 K/ 179,9 oC (Steam Superheated)

Parafin F3 407873,787 kg/jam F4 408048649 kg/jam

H-101
Naftena 473, Parafin
Aromatik Naftena
Aromatik

453,05 K/ 179,9 oC (Kondesat)

Gambar B.1 Perhitungan Neraca Energi Heater

Tabel B.1 Perhitungan Panas masuk pada Heater

Komposisi N
Komponen BM F1 (kg/jam) Cp gas dT Qin
(wt%) (kmol/jam)

benzene 78.114 1.557851 82.0925 6412.5705 427.4578 35091.065

toluene 92.141 4.361983 194.8665 17955.1973 537.5284 44127.027
p-xylene 106.167 0.988430 38.3233 4068.6654 644.7761 52931.258
m-xylene 106.167 2.954545 114.5532 12161.7716 646.7757 53095.412
o-xylene 106.167 0.934711 36.2405 3847.5423 678.4524 55695.827
etilbenzene 106.167 0.558678 21.6610 2299.6804 658.3862 54048.546
propana 44.097 0.848760 79.2286 3493.7453 372.7146 30597.057
isobutana 58.123 1.375207 97.3926 5660.7519 495.7470 40697.094
n-butana 58.123 3.685124 260.9818 15169.0460 504.7002 41432.083
isopentana 72.15 6.038016 344.4801 24854.2386 606.7090 49806.238
isopentana 72.15 6.650413 379.4185 27375.0422 616.0090 50569.691
n-pentan 70.134 0.687603 40.3567 2830.3759 428.1773 35150.132
n-heksana 86.177 5.694214 271.9873 23439.0507 732.6111 60141.845
metil sikloheksana 98.188 8.133057 340.9586 33478.0403 704.4460 57829.703
sikloheksana 84.161 3.502479 171.3053 14417.2274 537.7259 44143.240
n-heptana 100.204 4.995867 205.2258 20564.4501 849.2571 69717.609
n-oktana 114.231 3.685124 132.7927 15169.0460 965.0190 79220.782
metil siklopentana 84.161 2.771901 135.5729 11409.9530 569.6402 46763.166
isoheksana 86.177 6.446281 307.9102 26534.7744 726.2686 59621.176
isoheptana 100.204 4.888429 200.8124 20122.2039 840.5893 69006.043
1,2-dimetil
98.18606
siklopentana 2.976033 124.7654 12250.2208 651.9545 53520.551
isooktana 114.231 4.555372 164.1519 18751.2405 960.3565 78838.029
1,1,2-trimetil
112.21264
siklopentana 1.633058 59.9054 6722.1428 794.9244 65257.299
1,1-dimetil
112.21264
sikloheksana 5.619008 206.1219 23129.4783 805.8486 66154.092
1,1,2-trimetil
126.23922
sikloheksana 3.900000 127.1676 16053.5385 887.0902 72823.420
nonana 128.2551 6.371074 204.4769 26225.2020 1082.1229 88834.134
tetrametil
140.2658
sikloheksana 1.783471 52.3384 7341.2876 887.0902 72823.420
dekana 142.28168 3.663636 105.9911 15080.5968 1198.3864 98378.490
pentil
154.29238
sikloheksana 1.117355 29.8094 4599.3609 909.4723 74660.823
undekana 156.30826 0.569421 14.9954 2343.9051 1331.5504 109310.251

Total 4545.88387 421416.4414 22051.7876 1810285.50

Tabel B.2 Perhitungan Panas keluar pada Heater

Komposisi
Komponen BM N (kmol/jam) F1 (kg/jam) Cp gas out Qout
(wt%)
benzene 78.114 1.557851122 82.0924606 6412.5705 19185.68164 1574999.81
toluene 92.141 4.361983141 194.8665341 17955.1973 23744.88745 3738647.28
p-xylene 106.167 0.988429677 38.3232587 4068.6654 28229.14168 735257.84
m-xylene 106.167 2.954545231 114.5532188 12161.7716 28286.18752 2197781.59
o-xylene 106.167 0.934710673 36.2404729 3847.5423 29107.38147 695298.17
etilbenzene 106.167 0.558677644 21.6609723 2299.6804 28820.51282 415580.52
propana 44.097 0.848760266 79.2286389 3493.7453 15541.19874 1520055.44
isobutana 58.123 1.375206508 97.3926305 5660.7519 21127.55242 1868544.00
n-butana 58.123 3.685123688 260.9818146 15169.0460 21176.86476 5007114.01
isopentana 72.15 6.038016072 344.4800922 24854.2386 26040.25333 6609085.38
isopentana 72.15 6.65041272 379.4184645 27375.0422 25882.74744 7279401.87
n-pentan 70.134 0.687603254 40.3566876 2830.3759 18966.73783 774270.56
n-heksana 86.177 5.694214446 271.9873131 23439.0507 30843.70528 5218262.00
metil
sikloheksana 98.188 8.133057236 340.9585725 33478.0403 30989.45338 6541522.62
sikloheksana 84.161 3.502479074 171.3053243 14417.2274 24058.45478 3286609.42
n-heptana 100.204 4.995867391 205.2258406 20564.4501 35788.97308 3937397.64
n-oktana 114.231 3.685123688 132.7927271 15169.0460 40690.39939 2547718.99
metil
siklopentana 84.161 2.771900617 135.5729254 11409.9530 25329.17831 2601058.99
isoheksana 86.177 6.446280504 307.9101658 26534.7744 31265.18087 5907466.41
isoheptana 100.204 4.888429382 200.8123816 20122.2039 36068.38467 3852722.42
1,2-dimetil
siklopentana 98.18606 2.976032833 124.7653774 12250.2208 29559.80042 2393708.81
isooktana 114.231 4.555371556 164.1519425 18751.2405 41670.56753 3149366.91
1,1,2-trimetil
siklopentana 112.21264 1.633057728 59.9053978 6722.1428 36493.66714 1149325.89
1,1-dimetil
sikloheksana 112.21264 5.61900784 206.1218622 23129.4783 35380.69517 3954588.43
1,1,2-trimetil
sikloheksana 126.23922 3.899999705 127.1675988 16053.5385 40802.64050 2439797.07
nonana 128.2551 6.371073898 204.4768745 26225.2020 45653.06334 3923028.22
tetrametil
sikloheksana 140.2658 1.78347094 52.3384002 7341.2876 40802.64050 1004147.88
dekana 142.28168 3.663636087 105.9911351 15080.5968 50574.25499 2033512.17
pentil
sikloheksana 154.29238 1.117355287 29.8093846 4599.3609 41267.37970 571913.36
undekana 156.30826 0.569421445 14.9954012 2343.9051 54532.28231 287696.99
Total 4545.88387 421416.4414 957879.8684 87215880.7

dQ/dT (Qc) = Qout-Qin

= 87215880.7 - 1810285.50 kJ/jam

= 85405595.20 kJ/jam

Steam yang digunakan Steam Superheated dengan temperature 453,05 K

Steam = 2778,2 kJ/kg - 763,22 kJ/kg

= 2014,98 kJ/kg

Sehingga jumlah steam yang dibutuhkan adalah

𝑄
m =
𝑆𝑡𝑒𝑎𝑚

85405595.20 kJ/jam
=
2014,98 kJ/kg

= 42385.33147 kg/jam
 Alat Cooler Kode
Meningkatkan Temperatur Pendingin
Fungsi C- 101

Tin = 773,15 K/ 500 oC

Tout =313,15 K/ 40 oC (298,15 K/ 25oC (Air pendingin)

C-101
F7 773,15 K

F8 313,15 K
Paraffin
Naftena
Paraffin Aromatik
Naftena
Aromatik 323,15 K/ 50 oC
(Kondesat)

Tabel LB.3 Aliran Pendingan masuk Cooler

Komposisi N
Komponen BM F1 (kg/jam) cp dt Qin
(wt%) (kmol/jam)

benzene 78.114
1.557851122 76.40914221 6412.57047 -206766.4856 -15798850
toluene 92.141
4.361983141 181.3757877 17955.19732 -45133.70373 -8186161.1
p-xylene 106.167
0.988429677 35.67011268 4068.665402 -186146.8003 -6639877.3
m-xylene 106.167
2.954545231 106.6226194 12161.77158 -79214.55939 -8446063.8
o-xylene 106.167
0.934710673 33.7315196 3847.542282 -93046.20659 -3138589.9
etilbenzene 106.167
0.558677644 20.16136803 2299.680444 -35614.12713 -718029.52
propana 44.097
0.848760266 73.74358488 3493.745291 -111120.0991 -8194394.5
isobutana 58.123
1.375206508 90.65007064 5660.751863 -140188.8853 -12708132
n-butana 58.123
3.685123688 242.9138612 15169.04601 -162412.8654 -39452336
isopentana 72.15
6.038016072 320.6314946 24854.23865 -86981.18686 -27888908
n-pentana 72.15
6.65041272 353.151059 27375.04221 -132507.9871 -46795336
siklopentana 70.134
0.687603254 37.56276596 2830.375932 -95886.10653 -3601747.4
n-heksana 86.177
5.694214446 253.1574414 23439.05068 -164556.7686 -41658770
metil
98.188
sikloheksana 8.133057236 317.3537722 33478.04032 -35900.25038 -11393080
sikloheksana 84.161
3.502479074 159.445737 14417.2274 -261959.181 -41768275
n-heptana 100.204
4.995867391 191.0179122 20564.45013 -148915.8333 -28445592
n-oktana 114.231
3.685123688 123.5993938 15169.04601 -183955.1954 -22736751
metil
84.161
siklopentana 2.771900617 126.187117 11409.95297 -43122.69567 -5441528.6
isoheksana 86.177
6.446280504 286.5933298 26534.77436 -75551.99382 -21652697
isoheptana 100.204
4.888429382 186.9100001 20122.20389 -98066.43702 -18329598
dimetil
98.18606
siklopentana 2.976032833 116.1277831 12250.22083 -134779.3786 -15651630
isooktana 114.231
4.555371556 152.7875888 18751.24055 -101847.2663 -15560998
trimetil
112.21264
siklopentana 1.633057728 55.75810525 6722.142838 -24100.48178 -1343797.2
dimetil
112.21264
sikloheksana 5.61900784 191.8519016 23129.47832 -166771.3896 -31995408
trimetil
126.23922
sikloheksana 3.899999705 118.3636971 16053.53849 167978.0128 19882499
nonana 128.2551
6.371073898 190.3207976 26225.20199 -161257.8672 -30690726
tetrametil
140.2658
sikloheksana 1.78347094 48.71497616 7341.287573 -31955.74688 -1556723.4
dekana 142.28168
3.663636087 98.6532947 15080.59676 -188684.4014 -18614338
pentil
154.29238
sikloheksana 1.117355287 27.74566003 4599.360889 214545.5384 5952707.6
undekana
156.30826 0.569421445 13.95725909 2343.905068 -174152.3792 -2430689.9
TOTAL 4231.1692 423760.3465 -2988072.728 -46500382

Tabel LB.4 Aliran Pendingan keluar Cooler

Komposisi F1
Komponen BM N (kmol/jam) CP dt out Qout
(wt%) (kg/jam)

benzene 78.114 1.5578511 76.40914221 6412.5705 449.8695 34374.15

toluene 92.141 4.3619831 181.3757877 17955.197 1535.347 278474.7
p-xylene 106.167 0.9884297 35.67011268 4068.6654 1313.973 46869.57
m-xylene 106.167 2.9545452 106.6226194 12161.772 1685.822 179746.7
o-xylene 106.167 0.9347107 33.7315196 3847.5423 1709.881 57676.87
etilbenzene 106.167 0.5586776 20.16136803 2299.6804 1910.336 38514.98
propana 44.097 0.8487603 73.74358488 3493.7453 246.1594 18152.68
isobutana 58.123 1.3752065 90.65007064 5660.7519 424.9627 38522.9
n-butana 58.123 3.6851237 242.9138612 15169.046 339.8019 82542.6
isopentana 72.15 6.0380161 320.6314946 24854.239 1066.831 342059.6
n-pentana 72.15 6.6504127 353.151059 27375.042 883.5721 312034.4
siklopentana 70.134 0.6876033 37.56276596 2830.3759 741.6597 27858.79
n-heksana 86.177 5.6942144 253.1574414 23439.051 1120.296 283611.3
metil sikloheksana 98.188 8.1330572 317.3537722 33478.04 1716.365 544694.9
sikloheksana 84.161 3.5024791 159.445737 14417.227 416.8866 66470.79
n-heptana 100.204 4.9958674 191.0179122 20564.45 1695.072 323789.2
n-oktana 114.231 3.6851237 123.5993938 15169.046 1861.201 230043.4
metil siklopentana 84.161 2.7719006 126.187117 11409.953 1390.478 175460.4
isoheksana 86.177 6.4462805 286.5933298 26534.774 1492.165 427644.5
isoheptana 100.204 4.8884294 186.9100001 20122.204 1800.647 336559
dimetil siklopentana 98.18606 2.9760328 116.1277831 12250.221 1319.263 153203.1
isooktana 114.231 4.5553716 152.7875888 18751.241 1986.495 303511.8
trimetil siklopentana 112.21264 1.6330577 55.75810525 6722.1428 2440.263 136064.4
dimetil sikloheksana 112.21264 5.6190078 191.8519016 23129.478 1550.033 297376.8
trimetil sikloheksana 126.23922 3.8999997 118.3636971 16053.538 3505.505 414924.5
nonana 128.2551 6.3710739 190.3207976 26225.202 2345.115 446324.2
tetrametil sikloheksana 140.2658 1.7834709 48.71497616 7341.2876 3543.661 172629.3
dekana 142.28168 3.6636361 98.6532947 15080.597 2610.924 257576.3
pentil sikloheksana 154.29238 1.1173553 27.74566003 4599.3609 4806.643 133363.5
undekana 156.30826 0.5694214 13.95725909 2343.9051 3088.815 43111.39
TOTAL 4231.16915 423760.3 50998.04 6203187

dQ/dT = 6203187-( -46500382) kJ/jam

= 471207009 kJ/jam

Sehingga jumlah air pendingin yang dibutuhkan adalah

𝑄
m =
𝐻 (323,15 𝐾)−(298,15 𝐾)

471207009 kJ/jam
=
4085,400833 kJ/kg

= 115339,2356 kg/jam
 Alat Ekstraktor Kode
Alat pemisah aromatic dengan non aromatik
Fungsi E- 101

T ekstraktor = 413,15 K/ 100 oC

Sulfolane 98 %
Air 2 %
Steam (333,15 K/45 oC)
972,772 kg/jam T=313,15 K
E-101
Aromatik 80 %
Non aromatik 20 % 413,15 K Aromatik
Sulfolane

Kondensat (303,15 K/30 oC) Non aromatic

Tabel LB.5 Laju alir Ekstraktor

Komponen Komponen Masuk Komponen Keluar

F12 F13 F12
Aromatik 329902.045 - Aromatik 329902,045
Non aromatik 822475.5113 - Non aromatik 822475,5113
Sulfolane - 1343376,668 Sulfolane -
Air - 27415,85038 Air -
Total 1152377,556 1370792,518 Total 1152377,556
Laju Alir Total 4112377,5563 4112377,5563

Tabel LB.6 Ekstraktor masuk

INPUT
Komponen N (kmol/jam) F (Kg/jam) Cp (J/mol.K) Qin (kJ/jam)
Aromatik 330.70318 329902.05 1367.089073 6765082.215

Non aromatik 958.88897 822475.51 2896.7297 35737338.62

Sulfolane 11178969 1343376.7 218.5924659 4404780.277
Air 1523.1028 27415.85 75.5379 31064.03647
TOTAL 11181781.4 2523170.07 4557.949139 46938265.15

Tabel LB.7 Ekstraktor Keluar

OUTPUT
Komponen F
(Kg/jam) N (Kg/jam) Cp (J/mol.K) Tout Tref Qout (kJ/jam)
Aromatik 329902 330.7032 1367.089073 373.15 298.15 33907.5528
Non aromatik 822475.5 958.889 2896.7297 373.15 298.15 208323.1629
Sulfolane 1343377 11178969 218.5924659 373.15 298.15 183272875
Air 27415.85 1523.103 75.5379 373.15 298.15 8628.899018
TOTAL 2523170 11181781 4557.949139 183523734.6

dQ/dT = 183523734.6 - 46938265.15 kJ/Jam

= 136585469,5 kJ/jam

Sehingga jumlah steam yang dibutuhkan adalah

136585469,5 kJ/jam
m = 2256,9 kJ/kg

= 60519,06132 kg/jam