5. Kapasitas Panas Gas
Tabel 3.5 Konstanta Kapasitas Panas Gas
Komponen Kapasitas Panas Gas JKmol K
Cp
L
= A + BT + CT
2
+ DT
3
+ ET
4
, T dalam Kelvin A
B C
D E
Acetylene C
2
H
2
3,6760E+04 4,8290E+04 1,7965E+03 3,7220E+04 7,0807E+02 Formaldehyde CH
2
O 3,3270E+04 4,9542E+04 1,8666E+03 2,8075E+04 9,3490E+02
Butynediol C
4
H
6
O
2
4,6550E+04 1,7050E+05 1,6146E+03 1,1314E+05 -7,5018E+02 Methanol CH
4
O 3,9252E+04 8,7900E+04 1,9165E+03 5,3654E+04 8,9670E+02
Propargyl Alcohol C
3
H
4
O
9,3600E+04 7,0700E+04 1,2390E+03 -3,4400E+07 7,5800E+00
Hydrogen H
2
2,7617E+04 9,5600E+03 2,4600E+03 3,7600E+03 5,6760E+02 Nitrogen N
2
2,9105E+04 8,6149E+03 1,7016E+03 1,0347E+02 9,0979E+02 Air H
2
O 3,3359E+04 2,6798E+04 2,6093E+03 8,8880E+03 1,1676E+03
Sumber : Software ChemCAD 5.2
6. Konduktivitas Thermal Liquid
Tabel 3.6 Konstanta Konduktivitas Thermal Liquid
Komponen Konduktivitas Thermal Liquid Wm K
k
L
= A + BT + CT
2
+ DT
3
+ ET
4
, T dalam Kelvin A
B C
D E
Acetylene C
2
H
2
Formaldehyde CH
2
O Butynediol C
4
H
6
O
2
3,1482E-01 -3,3438E-04
Methanol CH
4
O
2,8370E-01 -2,8100E-04
Propargyl Alcohol C
3
H
4
O
2.7078E-01 -3.3830E-04
Hydrogen H
2
-4,9360E-01 1,0080E-01 -6,5500E-03 1,9910E-04 -2,35E-06
Nitrogen N
2
7,2590E-01 -1,6730E-02 1,6210E-04 -5,7605E-07
Air H
2
O
-4,2670E-01 5,6900E-03 -8,0065E-06 1,8150E-09
Sumber : Software ChemCAD 5.2
7. Konduktivitas Thermal Gas
Tabel 3.7 Konstanta Konduktivitas Thermal Gas
Komponen Konduktivitas Thermal Gas Wm K
2
1 T
D T
C AT
k
B g
, T dalam Kelvin
A B
C D
Acetylene C
2
H
2
-3,6780E+04 4,6400E-01 -7,2420E+09
Formaldehyde CH
2
O
4,4847E+01 -7,0960E-01 -3,4935E+03 5,3532E+06
Butynediol C
4
H
6
O
2
2,9991E-04 8,6070E-01 7,3699E+02
Methanol CH
4
O
-7,7630E+00 1,0279E+00 -7,4360E+07 6,7700E+09
Propargyl Alcohol C
3
H
4
O
3,3845E-04 8,7140E-01 6,6500E+02
Hydrogen H
2
2,5470E-03 7,4440E-01 9
Nitrogen N
2
3,5100E-04 7,6520E-01 2,5767E+01
Air H
2
O
6,9770E-05 1,1243E+00 8,4490E+02 -1,4885E+05
Sumber : Software ChemCAD 5.2
8. Tekanan Uap
Tabel 3.8 Konstanta Tekanan Uap
Komponen Tekanan Uap Pa
E
DT T
C P
ln T
B A
EXP
, T dalam Kelvin A
B C
D E
Acetylene C
2
H
2
1,7206E+02 -5,3185E+03 -2,7223E+01 5,4619E-02 1
Formaldehyde CH
2
O
1,0151E+02 -4,9172E+03 -1,3765E+01 2,2031E-02 1
Butynediol C
4
H
6
O
2
1,4360E+02 -1,6190+04 -1,6119E+01 6,8112E-18 6
Methanol CH
4
O
8,1768E+01 -6,8760E+03 -8,7078E+00 7,1926E-06 2
Propargyl Alcohol C
3
H
4
O
1,1301E+02 -8,1418E+03 -1,4526E+01 1,5774E-02 1
Hydrogen H
2
1,2752E+01 -9,5133E+01 1,0947E+00 3,3590E-04 2
Nitrogen N
2
5,9826E+01 -1,0976E+03 -8,6689E+00 4,6350E-02 1
Air H
2
O
7,2550E+01 -7,2067E+03 -7,1385E+00 4,0460E-06 2
Sumber : Software ChemCAD 5.2
9. Panas Penguapan
Tabel 3.9 Konstanta Panas Penguapan
Komponen Panas Penguapan kJkmol
38 ,
Tb
Tc T
Tc Hvap
, T dalam Kelvin
Tc K Tb K
Hvap
o
kJkmol
Acetylene C
2
H
2
308,32 189
16945,560
Formaldehyde CH
2
O
408 254,05
23012,490
Butynediol C
4
H
6
O
2
695 511,15
68484,96
Methanol CH
4
O
512,64 337,85
35255,140
Propargyl Alcohol C
3
H
4
O
580 386.75
42328,73
Hydrogen H
2
33,27 20,39
903,763
Nitrogen N
2
126,2 77,35
5577,910
Air H
2
O
647,35 373,15
40656,800
Sumber : Software ChemCAD 5
IV. NERACA MASSA DAN NERACA ENERGI
A. Neraca Massa
Berikut ini adalah rangkuman neraca massa prarancangan pabrik butynediol dengan kapasitas 40.000 tontahun.
1. Vaporizer 01 VP-101
Tabel 4.1 Neraca massa VP-101
Komponen Masuk
Keluar F4
F5 kgjam
kgjam
formaldehid 3726,9736 3726,9736
Metanol 1643,7537 1643,7537
Air 420,8754
420,8754
Total 5791,6027 5791,6027
2. Separator Drum 01 SD-101
Tabel 4.2 Neraca massa SD-101
Komponen Masuk
Keluar F5
F6 F7
kgjam kgjam
kgjam
Formaldehid 3726,9736
2981,5789 745,3947
Metanol 1643,7537
1315,0029 328,7507
Air 420,8754
336,7003 84,1751
Total 5791,6027
4633,2822 1158,3205 5791,6027
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