Information Technology Reference
In-Depth Information
PFV
GGIN
C5M
CHILL
MIX1
DIST
FEED
CHIN
PFVO
SF
PFIN
GGHX
PF
DFD
PFL
SFL
MIX2
PUMP
SFVO
DBOT
C5R
FG
ACL
GLIN
ACLIN
C5P
DVDR
GLHX
FGAS
Figure 12.12
Process for production of natural gas.
TABLE 12.3 Component List
ID
Formula
Databank Name
Lb-mol/hr
N2
N
2
Nitrogen
52.0
CO2
CO
2
Carbon dioxide
89.12
C1
CH
4
Methane
6033.50
C2
C
2
H
6
Ethane
297.08
C3
C
3
H
8
Propane
141.62
IC4
3
(
CH
3
)
CH
Isobutane
31.84
NC4
2
(
CH
3
)
2
(
CH
2
)
n
-Butane
45.11
IC5
(
2CH
3
)
CHCH
2
CH
3
2-Methylbutane
17.60
NC5
CH
3
·
3
(
CH
2
)
CH
3
n
-Pentane
14.90
NC6
CH
3
4
·
(
CH
2
)
CH
3
n
-Hexane
19.24
Hot-side heater
: outlet at 225 psi.
Primary flash
: adiabatic at 160 psi.
Secondary flash
: adiabatic at 100 psi.
Pump
: outlet at 260 psi.
Distillation column
: use DSTWU with NC4 and IC5 as the light and heavy key
components, respectively; 99% of the light key is to be in the distillate and 99%
of the heavy key is to be in the bottoms of the column. A partial condenser is
required. The top of the column is at 240 psi and the bottom at 255 psi.
Recycle splitter
: 20% of the column bottoms are to be returned to the process.
Air cooler
: outlet at 100
◦
F and 250 psi.
Gas/liquid heat exchanger
: modeled as two heaters with a heat stream used to pass
heat between them.
Hot-side heater
:outletat80
◦
F and 237.7 psi.
Cold-side heater
: outlet at 100 psi.
A partial setup for this flowsheet exists at Workshops/Twelve-2. It is complete
except for implementation of the specifications for the gas/gas heat exchanger.
