1 PSV PSV Anti- Foam Ven t Ven t Anti- Foam Quench Quench SM Wt SM Wt PI T CCD CCD PI T Blow Down Blow Down M F M F Heate r ID LE CO KI NG
Aug 11, 2015
1
PSV PSV
Anti-Foam Vent Vent Anti-FoamQuenchQuench
SM Wt SM Wt
PIT
CCD CCD
PIT
Blow Down
Blow Down
M F M F
Heater
IDLE CO
KING
2
PSV PSV
Anti-Foam Vent Vent Anti-FoamQuenchQuench
SM Wt SM Wt
PIT
CCD CCD
PIT
Blow Down
Blow Down
M F M F
Heater
COKING
TOP BOTTOMHEADING
3
PSV PSV
Anti-Foam Vent Vent Anti-FoamQuenchQuench
SM Wt SM Wt
PIT
CCD CCD
PIT
Blow Down
Blow Down
M F M F
Heater
COKING
STEAMING
4
PSV PSV
Anti-Foam Vent Vent Anti-FoamQuenchQuench
SM Wt SM Wt
PIT
CCD CCD
PIT
Blow Down
Blow Down
M F M F
Heater
COKING
CONDENSAT
E DRAINI
NG
5
PSV PSV
Anti-Foam Vent Vent Anti-FoamQuenchQuench
SM Wt SM Wt
PIT
CCD CCD
PIT
Blow Down
Blow Down
M F M F
Heater
COKING
PRESSTESTIN
G
6
PSV PSV
Anti-Foam Vent Vent Anti-FoamQuenchQuench
SM Wt SM Wt
PIT
CCD CCD
PIT
Blow Down
Blow Down
M F M F
Heater
COKING
PRESSRELEASING
7
PSV PSV
Anti-Foam Vent Vent Anti-FoamQuenchQuench
SM Wt SM Wt
PIT
CCD CCD
PIT
Blow Down
Blow Down
M F M F
Heater
COKING
VAPOUR
HEATING
8
PSV PSV
Anti-Foam Vent Vent Anti-FoamQuenchQuench
SM Wt SM Wt
PIT
CCD CCD
PIT
Blow Down
Blow Down
M F M F
Heater
CHANGE
OVER
CHANGE
OVER
9
PSV PSV
Anti-Foam Vent Vent Anti-FoamQuenchQuench
SM Wt SM Wt
PIT
CCD CCD
PIT
Blow Down
Blow Down
M F M F
Heater
STEAM QUENCHING
COKING
10
PSV PSV
Anti-Foam Vent Vent Anti-FoamQuenchQuench
SM Wt SM Wt
PIT
CCD CCD
PIT
Blow Down
Blow Down
M F M F
Heater
STEAM QUENCHING
COKING
11
PSV PSV
Anti-Foam Vent Vent Anti-FoamQuenchQuench
SM Wt SM Wt
PIT
CCD CCD
PIT
Blow Down
Blow Down
M F M F
Heater
WATER QUENCHING
COKING
12
PSV PSV
Anti-Foam Vent Vent Anti-FoamQuenchQuench
SM Wt SM Wt
PIT
CCD CCD
PIT
Blow Down
Blow Down
M F M F
Heater
WATER DRAINI
NG
COKING
13
PSV PSV
Anti-Foam Vent Vent Anti-FoamQuenchQuench
SM Wt SM Wt
PIT
CCD CCD
PIT
Blow Down
Blow Down
M F M F
Heater
RAEDY FOR
DECOKING
COKING
A E FDCB
1 32
14
GR DCUFG
Firing
A E FDCB
1 32
15
PDRP DCUFG
Firing
A E FDCB
1 32
16
GR DCUPilot
A E FDCB
1 32
17
PDRP DCUPilot
A E FDCB
1 32
18
GR DCUFO
Firing
A E FDCB
1 32
19
PDRP DCUFO
Firing
A E FDCB
1 32
20
GR DCU
Emergency
Steam
A E FDCB
1 32
21
PDRP DCU
Emergency
Steam
HEATER CELL CONVECTION
To isolate or to control the isolation valves of Pass C/Vs within minimum time is not possible as those are on the convection platform of the heater
Combustion AirTypical Heater Burner Assembly & Air Resistor
Difficulty in heater operation as the burner assembly and air resistor are unapproachable
•Heater stack height is lower than coke drum cutting platform.•Chances of having hazardous ambience at the cutting platform if wind direction is towards it.
GUJ
DCU
PDRP DCU
• One DCV for each Coke cutting pumps.
To Coke Drums
Bypass
Bypass
To Coke Drums
DCV
DCV
DCV
Coke cutting pump
Coke cutting pump
COKE DRUM
Vertical Water Pump Motors get submerged during water draining and hydraulic decoking of drums.
27
BLOWDOWNTOWE
R
T<176
Wax tailing Steam From V-1,2,3,4
Blow downSettling Drum
To Main Fractionator
To Coke Drum As Quench
BEFORE AFTER
BLOWDOWNTOWE
R
T<200
Wax tailing Steam From V-1,2,3,4
Blow downSettling Drum
To Main Fractionator
To Coke Drum As Quench