BAB III PERHITUNGAN NERACA MASSA
1. Neraca Massa Di Mixer
Input = Output Fresh feed + Recycle feed = Output
Tabel 3.1 Neraca Massa Di Mixer Komponen
Fresh Feed Alur 1 Recycle Feed Alur 2 Output Alur 3
kg kmol
kg kmol
kg kmol
Etilbenzen 13934,927 131,254
5878,453 55,376
19813,394 186,630 Benzen
35,012 0,448
0,000 0,000
35,012 0,448
Toluen 35,012
0,378 0,000
0,000 35,012
0,378 Stirena
0,000 0,000
309,523 2,969
309,523 2,969
Jumlah 14004,952 132,081
6187,976 58,345
20192,942 190,425 20192,942 kg
20192,942 kg
2. Neraca Massa Di Bed Katalis I
Tabel 3.2 Neraca Massa Di Bed Katalis I Pada Reaktor R – 01 Komponen
Input Alur 3 dan 4 Bereaksi kmol
Output Alur 5 kmol
kg 1
2 3
4 5
6 kmol
kg Etilbenzen
186,630 19813,380 -74,646 -2,619 -3,739 105,625 11213,933
Benzen 0,448
35,012 2,619
3,067 239,555
Toluen 0,378
35,012 3,739
4,117 379,632
Stirena 2,969
309,523 74,646 77,615
8083,924 Air
3318,585 59734,580 -5,238 -3,739 -8,977 3300,631 59411,402
CO
2
0,000 0,000
8,977 8,977
395,892 H
2
0,000 0,000 74,646 -2,619 -3,739 13,095 11,218 8,977 101,578
203,156 C
2
H
6
0000 0,000
2,619 -2,619
0,000 0,000
CH
4
0,000 0,000
3,739 -3,739
0,000 0,000
CO 0,000
0,000 5,238 3,739 -8,977
0,000 0,000
Jumlah 3509,011 79927,508
3601,612 79927,494
Universitas Sumatera Utara
3. Neraca Massa Di Bed Katalis II Tabel 3.3 Neraca Massa Di Bed Katalis II Pada Reaktor R – 01
Komponen Input Alur 5 dan 6
Bereaksi kmol Output Alur 7
kmol kg
1 2
3 4
5 6
kmol kg
Etilbenzen 105,625 11,213,933 -46,665 -1,274 -2,003
55,684 5.911,770
Benzen 3,067
239,555 1,274
4,342 339,788
Toluen 4,117
379,632 2,003
6,120 564,974
Stirena 77,615
8,083,882 46,665 124,280 12.944,133
Air 5,169,620 93,053,187
-2,549 -2,003 -4,552 5.160,517 92.889,330 CO
2
8,977 395,892
4,552 13,529
595,266 H
2
101,578 203,156 46,665 -1,274 -2,003 6,372 6,008 4,552 161,897
323,794 C
2
H
6
0,000 0,000
1,274 -1,274
0,000 0,000
CH
4
0,000 0,000
2,003 -2,003
0,000 0,000
CO 0,000
0,000 2,549 2,003 4,552
0,000 0,000
Jumlah 5,470,600 113,569.238
5.526,368 113.569,056
4. Neraca Massa Di Drum Separator
Tabel 3.4 Neraca Massa Di Drum Separator
Komponen Input Alur 7
Output Atas Alur 8 Output Bawah Alur 9 kmol
kg kmol
kg kmol
kg H
2
161,897 323,794 161,897 323,794
0,000 0,000
CO
2
13,529 595,266
13,529 595,266 0,000
0,000 Benzen
4,342 339,788
0,000 0,000
4,342 339,788
Toluen 6,120
564,974 0,000
0,000 6,120
564,974 Etilbenzen
55,684 5.911,770
0,000 0,000
55,684 5.911,770
Stirena 124,280
12.944,133 0,000
0,000 124,280 12.944,133
Air 5.160,517
92.889,330 0,000
0,000 5.160,517 92.889,330 Jumlah
5.526,368 113.569,056 175,426 919,061 5.350,942 112.649,995
113.569,056 kg 113.569,056 kg
Universitas Sumatera Utara
5. Neraca Massa Di Dekanter
Tabel 3.5 Neraca Massa Di Dekanter
Komponen Input Alur 9
Output Atas Alur 10
Output Bawah Alur 11
kmol kg
kmol kg
kmol Kg
Toluen 6,120
564,974 5,616
517,539 0,504
47,435 Benzen
4,342 339,788
3,515 273,181
0,826 66,608
Etilbenzen 55,684
5.911,770 55,600 5.904,054 0,084
7,717 Stirena
124,280 12.944,133 124,000 12.914,358
0,280 29,775
Air 5.160,517
92.889,330 0,000
0,000 5.160,517 92.889,330 Jumlah
5.350,942 112.649,995 188,731 19.609,132 5.162,211 93.040,863
112.649,995 kg 112.649,995 kg
6. Neraca Massa Di Kolom Destilasi I Tabel 3.6 Neraca Massa Di Kolom Destilasi I
Komponen Input Alur 10
Output Atas Alur 12 Output Bawah Alur 13 kmol
kg kmol
kg kmol
kg Toluen
5,616 517,539
5,616 517,833
0,000 0,000
Benzen 3,515
273,181 3,515
274,063 0,000
0,000 Etilbenzen
55,600 5.904,054
55,376 5.879,937 0,224
22,548 Stirena
124,000 12.914,358
2,983 310,686
121,017 12.603,715 Jumlah
188,731 19.609,132
67,490 6.982,519 121,241 12.626,263
19.609,132 kg 19.609,132 kg
Universitas Sumatera Utara
7. Neraca Massa Di Kolom Destilasi II
Tabel 3.7 Neraca Massa Di Kolom Destilasi II Komponen
Input Alur 12 Output Atas Alur 14 Output Bawah Alur 2
kmol kg
kmol kg
kmol kg
Toluen 5,616
517,833 5,616
517,833 0,000
0,000 Benzen
3,515 273,181
3,515 273,181
0,000 0,000
Etilbenzen 55,376
5.879,937 0,014
1,485 55,362
5.878,453 Stirena
2,983 310,686
0,014 1,162
2,969 309,523
Jumlah 67,490
6.981,637 9,159
793,661 58,331
6.187,976 6.981,637 kg
6.981,637 kg
8. Neraca Massa Di Kolom Destilasi III Tabel 3.8 Neraca Massa Di Kolom Destilasi III
Komponen Input Alur 14
Output Atas Alur 15 Output Bawah Alur 16 kmol
kg kmol
kg kmol
kg Toluen
5,616 517,833
0,014 1,330
5,602 516,503
Benzen 3,515
274,063 3,501
272,971 0,014
1,092 Etilbenzen
0,014 1,485
0,000 0,000
0,014 1,485
Stirena 0,011
1,162 0,000
0,000 0,014
1,162 Jumlah
9,156 794,543
3,515 274,301
5,644 520,242
794,543 kg 794,543 kg
Universitas Sumatera Utara
BAB IV NERACA PANAS