Retentate Path Does Not Cross Dew Boundary.
Dew-Point Conditioning OK.
18 o C of Margin to the Dew-Point.
Fig. 14 FGc40p20 retentate path
on plane T Â P. Blue line: feed
dew-point locus; dashed-magenta
line: final retentate dew-point
locus; black-dot line: retentate
path. Path does not reach
dew-point locus: no condensation
predicted for MP#1
HFM Modules: 38
N HF :
110,000 Hollow-Fibers
MP#1 Area:
38*1734.79 = 65,992 m 2
MP#1 Feed:
1.4581MMNm 3 /d,
P=52.5bar,
T=45 o C
MP#1 Retentate: 0.777030 MMNm 3/ d,
P=51.84bar,
T=31.8 o C
MP#1 Permeate: 0.6811MMNm 3/ d,
P=20bar,
T=31.7 o C
External T:
25 o C
Internal and External MP Heat Transfer Coefficients: 13W/m 2 .K
Permeances: CO2: 1.332.10 -8 mol/s.m 2 .Pa, CH4: 4.614.10 -10 mol/s.m 2 .Pa
G60 with FLASH at 5 O C + MP with Permeate at P=20bar
Diagnosis: [Successful]
# Battery #1 with 38 HFM Modules Tight (only Stage 1 Used)
[OK]
# Retentate Product (Fuel-Gas) 39.7%CO2+50.3%CH4+4.74%C2+2.5%C3 [OK]
# Retentate Flow Rate (Fuel-Gas) 777030 Nm 3/ d =833909 Sm 3/ d
[OK]
# No Retentate Condensation in MP#1
[OK]
# NGL Produced: 3.8ton/h with 65.7%CO2+11.1%CH4+2.6%C2+3.5%C3+3.5%C4
# Permeate P=20bar: 0.6811MMNm 3/ d with 82.8%CO2 + 16.8%CH4
# Flash Pre-Conditioning T=5 o C, 53bar: Necessary to avoid MP condensation.
Fig. 15 Process FGc40p20
diagnosis: targets accomplished;
MP#2 not necessary
Membrane-Permeation Modeling for Carbon Capture …
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