The document describes a condensate fractionation unit (CFU) that processes sour condensate in multiple stages. It includes: - A two-stage fractionation process using a stripper column and LPG column to separate the condensate into natural gas liquids (NGL), liquefied petroleum gas (LPG), and off-gas. - Tables providing processing capacities, stream compositions and properties at different stages, and product specifications. - Piping and instrumentation diagrams showing the flow of streams between major equipment like columns, drums, pumps, heat exchangers, and a caustic wash unit used to sweeten the LPG.

1. 1
Condensate
Fractionation Unit
Presented by: Aniruddh Singh Shekhawat

2. 2
OBJECTIVES OF CFU
SWEETENING OF SOUR
CONDENSATE RECEIVED WITH
SOUR GAS
RECOVERY OF LPG FROM
CONDENSATE

3. 3
PROCESSING CAPACITY
PHASE I
TRAIN #
PHASE II
PHASE III
CAPACITY
71
72
73
74
75
76
77
51.5T or 75 m3/ hr
each
PHASE III A
TOTAL CAPACITY
525 m3/ hr
12600 m3/ day

4. 4
TWO STAGE FRACTIONATION
STRIPPER
COLUMN
LPG
COLUMN

5. 5
Case Case1 Case2 Case3 Case4
Pressure Kg/Cm2/Temp. Deg C 93.0/20.0 93.0/33.0 54.0/20.0 54.0/33.0
Component Mole % Kg mol/hr Mole % Kg mol/hr Mole % Kg mol/hr Mole % Kg mol/hr
N2 - 0.02 - 0.02 - 0.01 - 0.01
H2S 0.19 2.02 0.18 1.36 0.17 1.21 0.15 0.79
CO2 5.86 62.20 5.27 40.46 4.20 29.95 3.65 19.55
C1 37.85 401.92 34.68 266.56 22.91 163.28 20.93 112.03
C2 9.69 102.90 8.91 68.51 8.45 60.20 7.32 39.18
C3 12.42 131.89 11.75 90.32 14.07 100.31 12.26 65.08
iC4 3.83 40.73 3.77 28.99 5.11 36.40 4.56 24.42
nC4 5.94 63.07 5.95 45.74 8.27 28.98 7.56 40.44
iC5 2.39 25.42 2.54 19.49 3.66 26.05 3.61 19.31
nC5 2.70 28.72 2.91 22.40 4.18 29.82 4.24 22.67
C6 3.60 38.22 4.17 32.03 5.68 40.45 6.39 34.19
C7 4.10 43.54 5.02 38.59 6.34 45.22 7.69 41.12
C8 4.87 51.67 6.20 47.64 7.34 52.34 9.27 49.60
C9 2.52 26.82 3.29 25.29 3.74 26.67 4.81 25.77
C10 1.53 16.22 2.02 15.50 2.24 15.93 2.90 15.53
C11 1.73 18.42 2.31 17.73 2.52 17.97 3.29 17.60
C12 0.78 8.23 1.03 7.96 1.12 8.00 1.47 7.58
HC kg/hr 51690 41154 43641 35865
Water kg/hr 200 200 200 200
Mol. Wt. 48.67 53.54 61.23 67.02
Density kg/m3 545 551 595 597
Temp. deg C 20 33 20 33
Pr. kg/cm2 93 93 54 54

6. 6
FV102
X701A/B COALESCER FILTER
LV106 LV101
FV101
STEAM
POT
V705
LV105
FV201
MP STEAM
P703A/B
STRIPPER BOTTOM
PUMPS
FV202
SURGE DRUM
V701
PV102
TO OWS
6”
12”
8”
10”
2”
TI205
30-33 OC
TRAY 22
TI203
52-54 OC
TO OFFGAS COMMON HEADER
TC10133OC
FEED TI206
30-33 OC
TI105 18-20 OC
TRAY 5
TI 204
52-54 OC
SDV101
TI207 130-145 OC
(VAPOUR)
8”
FCV203
4”
STRIPPER REBOILER
(KETTLE TYPE)
E702
SDV1102
PREHEATER E701
X702A/B
(BASKET FILTERS)
LT202
P701A/B(CONDENSATE
TRANSFER PUMPS)
LT105
LI 203
LT101 LT106
C701
STRIPPER
COLUMN
PIC201
18-19
KG/CM2
COND. RETURN
STEAM
POT
V706
LV201
TR58
TI201
93-97 OC
TO V709
LT201

7. 7
PV301A
PV301B
TO FLARE
P702A/B
REFLUX PUMPS
LV302
NGL to KRU
NGL TO TANK
15
19
24
56
60
8”
4”
FV301
8”
10”
16”
4”
6”
V702
REFLUX DRUM
1
LPG
COLUMN
C702
175-185OC
TI307
TI305REFLUX35-40OC
PIC301 (9.0 KG/CM2)
TRAY 56
TI 301
145-150 OC
TRAY 21
TI303
75-95 OC
TI310 (35-40 OC)
WCS
WCR
WCS
WCR
E703
CONDENSER
E704
E705 NGL COOLER
LT302
(20% OF FEED)
LPG TO CWU
THERMO-
SYPHON
REBOILER
TRAY 24
TI306
135-145 OC
TRAY3
TI304
65-75 OC
LV301
LT301
TI309
170-180 OC
TI311
35-45 OC
FI303
(SPLIT CONTROL)
E703
LPG CONDENSER
HPSTEAM
TI308
58-61OC
FEED FROM STRIPPER BOTTOM
LV401
(20% OF FEED)
LPG TO CWU
REFLUX FV302
2 to 2.8 TIMES OF
PRODUCT
STEAM
POT
V708
STEAM
POT
V709
STEAM
POT
V707
TO
MP HEADER
TO
LP
HEADER
TO
RETURN COND. HEADER
FROM
V706
LT305LT303 LT304
LV305
LV303 LV304 LV305

8. 8
SUCTION
KOD
V703
DISCH.
KOD
704
OFFGAS TO GSU
PV201A
PV201B
(TO V701)
8”
TO FLARE
WCR
WCS
E706
OFFGAS COOLER
OWSOWS
TO
FLARE
CommonOffgasheader
FROM STRIPPER TOP
K701A/B

9. 9
LPG COMPOSITION (mol %)
Case
Case1 Case2 Case3 Case4
Pressure Kg/Cm2
Temp. Deg C
93.0
20.0
93.0
33.0
54.0
20.0
54.0
33.0
Component Mole % Kg mol/hr Mole % Kg
mol/hr
Mole % Kg
mol/hr
Mole % Kg
mol/hr
N2 - - - - - - - -
H2S ppm 5 - 5.7 - 5.4 - 6.4 -
CO2 - - - - - - - -
C1 - - - - - - - -
C2 - - - - - - - -
C3 48.63 80.43 48.09 58.25 45.55 70.06 44.78 47.25
iC4 19.43 32.14 19.48 23.60 20.23 31.12 20.14 21.25
nC4 31.86 52.70 32.33 39.16 34.14 52.51 34.55 36.46
iC5 0.07 0.12 0.09 0.11 0.08 0.12 0.48 0.51
nC5 0.01 0.01 0.01 0.01 - - 0.05 0.06
C6 - - - - - - - -
Total 100.00 165.40 100.00 121.13 100.00 153.81 100.00 105.53
HC kg/hr 8487 6224 7959 5479
Mol. Wt. 51.31 51.38 51.74 51.98
Density kg/m3 528 528 528 529
Temp. deg C 43 43 45 45
Press. kg/cm2 15.5 15.5 15.5 15.5

10. 10
PRODUCT SPECIFICATION LPG ( BIS 4576 )
1. Vapour pressure at 65 deg c (Max.) 16.8 Kg/cm2
2. Total Volatile Suphur PPM (Max.) 20
3. 95% distillate temp. at 760mm Hg +2 oC
4. Copper strip corrosion (Max.) ASTM1 (Slight
tarnish)
5. Dryness No free water
6. Hydrogen Sulphide 20 ppm
* LPG shall be sweetened in the Caustic Wash Unit to meet IS-4576
specifications.

11. 11
NGL COMPOSITION (mol %)
Case Case1 Case2 Case3 Case4
Pressure Kg/Cm2
Temp. Deg C
93.0
20.0
93.0
33.0
54.0
20.0
54.0
33.0
Component Mole % Kg mol/hr Mole % Kg mol/hr Mole % Kg
mol/hr
Mole % Kg
mol/hr
nC4 0.05 0.12 0.05 0.11 0.05 0.13 0.05 0.12
iC5 9.24 23.23 8.10 18.04 9.52 24.67 7.79 19.98
nC5 10.67 26.83 9.50 21.17 11.07 28.69 9.47 21.86
C6 14.79 37.19 14.07 31.34 15.40 39.90 14.63 33.80
C7 17.12 43.05 17.17 38.25 17.36 45.00 17.73 40.95
C8 20.46 51.42 21.30 47.47 20.15 52.24 21.44 49.53
C9 10.64 26.76 11.33 25.25 10.28 26.65 11.15 25.67
C10 6.44 16.20 6.95 15.49 6.14 15.93 6.73 15.53
C11 7.32 18.41 7.96 17.73 6.94 17.98 7.62 17.60
C12+ 3.27 8.23 3.57 7.96 3.09 8.00 3.40 7.85
Total 100.00 251.44 100.00 222.81 100.00 259.19 100.00 230.98
HC kg/hr 27027 24360 27628 25154
Mol. Wt. 107.49 109.33 106.59 108.90
Density kg/m3 654 665 653 667
Temp. deg C 45 45 45 45
Press. kg/cm2 5 5 5 5

12. 12
Caustic Wash Unit

13. 13
V219
CAUSTIC WASH
DRUM
V218
CAUSTIC
FLASH
DRUM
TO LPG
STORAGE
MAKE-UP
FROM
PUMP
CS
CS
CS
¾”
TO NGL STORAGE
(BLINDED)
3”
4”
SOUR LPG FROM CFU
FLARE HEADER
PSV
PSV PSV
BACKFLUSHLINE
2”
HIC1701
SAND BED
DIFFUSERS

14. 14

15. 15
TANK B
20M3
(CAUSTIC SOLUTION)
2” DMW
PLANT AIR 1”
RECIRCULATIONLINE3”
TOTANKA
3” TO V219
3”
4”
4”
DRAIN POINT
FRESH LYE
MAKEUP
TANKER TO
FLEXIBLE
HOSE
2” DMW
3”
4”
CAUSTIC PUMP P225A/B
MAKEUP
RECIRCULATION
CAUSTIC TANK B
20M3
DRAIN POINT
CAUSTIC TANK A
20M3

16. 16