N2 (g)
300C, 3 bar
DECANTER
P-C8H10 (l)
N2 (g)
M- C8H10 (l) O- C8H10 (l) C7H8 (l)
H2O (l) C7H8 (l) P-C8H10 (l) M-C8H10 (l) O-C8H10 (l) 400C, 3.5 bar
Assumpt!"# Ntr!g$" s %$al gas
H2O (l) 400C, 3 bar
300C, 3 bar
&p$'' $at tabl$ &ubsta"'$s N2 (g) H2O (l) C7H8 (l) P-C8H10 (l) M-C8H10 (l) O-C8H10 (l)
A 210-3 75.410-3 148.810-3 -11.03510-3 70.110-3 5.4010-3
* 0.2110-5 32.410-5 1.5158 10-3 8.045 10-4 .42 10-4
C 0.572310-8 -3.03 10- -2.1885 10- -2.402 10-
+ -2.871 10-12 2.13 10- 2.50110 - 2.838 10-
/$$r$"'$s# N2 (g), H2O (l), C7H8 (l), P-C8H10 (l), M-C8H10 (l), O-C8H10 (l) at 400C, 3.5 bar. &ubsta"'$s ṅ " (m!l)
N2 (g) H2O (l) C7H8 (l) P-C8H10 (l) M-C8H10 (l) O-C8H10 (l)
3
238.4 10 11.2 103 834.4 103 11.07 103 5.7 23.
Ĥ1# N2 (g, 400C, 3.5 bar)
" (m!l) 0 0 0 0 0 0
1 Hpat H1a6 H1b 30
∫ cpdT 40
3
238.4 10 11.2 103 834.4 103 11.07 103 5.7 23.
N2 (g, 300C, 3 bar)
H1a N2 (g, 400C, 3.5 bar)
ṅ !ut (m!l)
H1b N2 (g, 400C, 3 bar)
N2 (g, 300C, 3 bar)
!ut (m!l) 1 2 3 4 5
( 29 x 10− ) +(¿)T +( 3
−5 0.2199 x 10 2 −8 T 0.5723 x 10
) + (−2.871 x 10− ) T dT
12
3
30
∫¿ 40
=
−¿ 0.2908 kJ/mol
Ĥ2# H2O (l, 400C, 3.5 bar)
H2O (l, 400C, 3 bar)
H2a H2O (l, 400C, 3.5 bar)
H2O (l, 400C, 3 bar)
2 Hpat H2a P 0.018m3m!l(3 – 3.5)bar 1 3
0.00 m barm!l (
¯¿
2
1 kmol
/
1 x 10 N m 2
¿
) ( 1000 mol )
s"'$, 1 1N.m
= 0.0009 kJ/mol
Ĥ3# C7H8 (l, 400C, 3.5 bar)
C7H8 (l, 300C, 3 bar)
H3a C7H8 (l, 400C, 3.5 bar)
H3b C7H8 (l, 400C, 3 bar)
C7H8 (l, 300C, 3 bar)
3 Hpat H3a6 H3b 30
∫ (148.8 x 10− + 32.4 x 10− T ) dT 3
P 6
5
40
¯ 0.104 m3m!l (3 −3.5 ¿ ¿
6 ( −1 . 6014 ) m!l 1
0.0532
3
m barm!l (
¯¿
2
/
1 x 10 N m 2
¿
1 kmol
) ( 1000 mol ) 6 ( −1 . 6014 ) m!l
0.00532 m!l 6 ( −1 . 6014 ) m!l
= - 1.5961 kJ/mol
Ĥ4# P-C8H10 (l, 400C, 3.5 bar)
P-C8H10 (l, 300C, 3 bar)
H4a
H4b
P-C8H10 (l, 400C, 3.5 bar)
P-C8H10 (l, 400C, 3 bar)
P-C8H10 (l, 300C, 3 bar)
4 Hpat H4a6 H4b 30
∫ ( 70.916 x 10− )+( 1.5158 x 10− )T +(−3.9039 x 10− )T +( 2.9193 x 10− T ) dt 3
P 6
3
6
2
9
3
40
¯ 0.1234 m3m!l (3 −3.5 ¿ ¿ 6 ( −¿ 1.128) m!l 1
0.0617
3
m barm!l (
¯¿
2
1 kmol
/
1 x 10 kN m 2
¿
) ( 1000 mol ) 6 ( −¿ 1.128) m!l
0.0017 m!l 6 ( −¿ 1.128) m!l
= - 1.1866 kJ/mol
Ĥ5# M-C8H10 (l, 400C, 3.5 bar)
M-C8H10 (l, 300C, 3 bar)
H5a M-C8H10 (l, 400C, 3.5 bar)
H5b M-C8H10 (l, 400C, 3 bar)
M-C8H10 (l, 300C, 3 bar)
5 Hpat H5a6 H5b 3 −9 2.5061 x 10 T dt −4 −6 8.045 x 10 T 2.1885 x 10
¿
(− P 6
−3 11.035 x 10
) +(
) +(−
30
∫¿ 40
2
) T +¿
¯ 0.122 m3m!l (3 −3.5 ¿ ¿ 6 (−0.1453 ) m!l 1
¯¿
2
1 kmol
) ( 1000 mol ) 6 ( −0.1453 ) m!l
/
1 x 10 kN m 2
3
0.015 m barm!l (
¿
0.0015 m!l6 (−0.1453 ) m!l
= −0.1392 kJ / mol Ĥ6# O-C8H10 (l, 400C, 3.5 bar)
O-C8H10 (l, 300C, 3 bar)
Ha
Hb
O-C8H10 (l, 400C, 3.5 bar)
O-C8H10 (l, 400C, 3 bar)
O-C8H10 (l, 300C, 3 bar)
Hpat Ha6 Hb
(
−3 56.460 x 10
) +(
3 −9 2.6838 x 10 T dt −4 −6 9.4926 x 10 T 2.4902 x 10
¿ ) +(−
P 6
2
) T +¿
30
∫¿ 40
¯ 0.120 m3m!l (3 −3 . 5 ¿ ¿ 6 ( −0 . 8673 ¿ m!l 1 3
0.003 m barm!l (
¯¿
2
1 kmol
) ( 1000 mol ) 6 ( −0 . 8673 ¿ m!l
/
1 x 10 kN m 2
¿
0.0003 m!l+ ( −0 . 8673 ¿ m!l
= -0.8613 kJ/mol
&ubsta"'$s ṅ " (m!l) 3
" (m!l) 0
ṅ !ut (m!l)
238.4 10
3
N2 (g)
238.4 10
H2O (l) C7H8 (l)
11.2 103 834.4 103
0 0
11.2 103 834.4 103
P-C8H10 (l)
11.07 103
0
11.07 103
!ut (m!l) −¿ 0.2908 0.0009
−1.5961 −1.1866
M-C8H10 (l)
5.7
0
5.7
−0.1392
O-C8H10 (l)
23.
0
23.
-0.8613
H !ut ṅ 9 " ṅ :(238.4 103 −¿ 0.208) 6 (11.2 10 3 0.000) 6 (834.4 103 91.51) 6 (11.07 103 91.18) 6 (5.7 90.132) 6 (23. -0.813); 9 :0;
= – 1542.33 x 103 kJ/h
= H – Q�
1542.33 x 103 kJ/h
