Emerging Technology Acid Gas Removal

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Emerging TechnologyAcid Gas Removal

• EPAs Natural Gas STAR Program,
• Pioneer Natural Resources USA, Inc., and
• The Gas Processors Association
• June 17, 2003

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New Developments in Acid Gas Removal Technologies

• Typical Amine Process
• IGT Uhde Morphysorb Process
• Engelhard Molecular Gate Process
• Comparison

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Typical Amine Process
Acid Gas
Sweet Gas
Lean Amine
Stripper (Steel)
Condenser
Contractor (Adsorber)
Reflux Pump
Reboiler
Sour Gas
Fuel
Rich Amine
Heating Medium
Flash Tank
Exchanger
Booster Pump
Filter
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Morphysorb Process
Clean Gas
Lean Solvent
Semi Lean
Sour Gas
Absorber
Crude Gas
Flash 1
Flash 2
Flash 3
Flash Recycle
c. w.
c. w.
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Morphysorb Field Test Unit

• The process is ready for commercial-scale
  application
• One field test unit at Shell's Exploration and
  Production facilities in Fandango, Texas, USA
• Feed capacity 1 MMscfd

Source Morphysorb Process. IGT Uhde
Technology Profile
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Molecular Gate CO2
10 psi pressure drop
Enriched CH4 30 psia
Feed Compressor
PRODUCT C1, C2
Pressure Swing Absorption
FEED High Pressure C1, C2, C3, C4 CO2, H2O
5 psia
TAIL GAS CO2, H2O, C3, Lost HCs
Vacuum Compressor
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Tidelands Molecular Gate Unit

• First commercial unit started on May 2002
• Separate recycle compressor is required
• No glycol system is required
• Heavy HC removed with the CO2
• Tail gas used for fuel is a key optimization
• 18 CO2 removed to pipeline specifications
• C2 losses makes the applicability site specific

Source http//www.Engelhard.com/documents/CO220R
emoval-1.pdf
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Comparison