Transcript University of Cambridge Process Industries Module

Acid Gas
Treatment
Gas
Wells
Acid Gas
Removal
Reception
Dehydration
Mercury
Removal
Liquefaction
LNG
Natural Gas
Condensate
Stabilisation
Fractionation
Condensate
Storage
and
Loading
LPG
Utilities
Fig. 1 LNG Block Flow Diagram
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1
Pure
Refrigerant
Natural gas Cooling
Curve
Temperature
Refrigerant
Cooling Curve
Mixed
Refrigerant
Mixed
Refrigerant
Heat
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Fig. 2 Typical Natural Gas / Refrigerant Cooling
Curves
2
Expander
To Furnace
Amine
Unit
Sour
Feed
Gas
Scrub
Column
Acid
Gas
C1
HHP
Dehydration
C3
Unit
HP
C3
MP
C3
LNG
to Storage
G
Generator
Mercury
Removal
Unit
LP
C3
NGL Reinjection
HP Fuel Gas
HP Fuel
Gas
C3
C2
M
Main
Cryogenic
Exchanger
Hydrocarbon
Condensate to
Storage
Fractionation
LP C3
C3 Compressor
GT
End
Flash Gas
Compressor
MP C3
M
MR Compressor
HP C3
HHP C3
M
GT
HHP C3
HP C3
LP C3
MP C3
Propane Precooling
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N2 C1 C2 C3
Refrigerant
Make-up
Multicomponent Refrigerant
System
Fig. 3 APCI Propane Precooled Mixed Refrigerant Process
(Typical)
3
Treated
Gas
LNG
Propane
Ethane
Methane
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Fig. 4 Phillips Optimised Cascade
Process
4
Process
Gas
LNG
Fig. 5 Black & Veatch PRICO Process
Process
Gas
Precooling
Liquefaction
Subcooling
LNG
Fig. 6 Statoil . Linde Mixed Fluid Cascade Process
(MFCP)
Process
Gas
Precooling
Liquefaction
LNG
Fig. 7 Axens Liquefin Process