
Fuel gas conditioning
In many cases, the raw natural gas is the only fuel available for operating compressor station or gas turbine in remote location or off-shore platform. This gas often contains heavy hydrocarbons(C5+), acid gases, and water vapor, which can cause significantly operating problems, such as the pre-detonation, incomplete fuel combustion, and carbon deposit buildup etc.
Membrane offers a simple and low-cost solution to remove heavy hydrocarbons, acid gases and water vapor from the raw gas to improve fuel quality and protect compressor or gas turbine.
Most available for:
• Associated gas: to reduce BTU by removing heavy HCs.
• Shale gas: to reduce BTU by removing ethane.
• Sweet gas: to increase BTU by removing CO2
• Sour gas: to meet the requirement by removing H2S
Performance:
• Ethane removal up to 50%
• C3+ removal up to 80-90%
• CO2 removal up to 50-80%
• H2S removal up to 90-95%
Benefits:
• Increases reliability of gas engine and turbine, and reduce unscheduled downtime.
• Overcomes space and weight limitation
• Easy to install and operate with skid-mounted construction and no moving parts.
• Permits unattended operation at remote location
References:

Location: Indonesia
End user: Pertamina
Capacity: 240,000 Nm3/day
C3+ removal: 80%

Location: South China Sea (off-shore)
End user: CNOOC
Capacity: 8,000 Nm3/day
C3+ removal: 80%