Emerging Technology Acid Gas Removal

Emerging Technology Acid Gas Removal EPA’s Natural Gas STAR Program, Pioneer Natural Resources USA, Inc., and The Gas Processors Association June 17, 2003 New Developments in Acid Gas Removal Technologies  Typical Amine Process  IGT & Uhde Morphysorb® Process  Engelhard Molecular Gate® Process  Comparison Reducing Emissions, Increasing Efficiency, Maximizing Profits Page 2 Typical Amine Process Acid Gas Lean Amine Sweet Gas Stripper (Steel) Contractor (Adsorber) Condenser Reflux Pump Sour Gas Rich Amine Fuel Reboiler Heating Medium Exchanger Flash Tank Booster Pump Filter Reducing Emissions, Increasing Efficiency, Maximizing Profits Page 3 Morphysorb® Process Clean Gas Lean Solvent Semi Lean Absorber Sour Gas Crude Gas Flash 1 Flash 2 Flash Recycle c. w. Flash 3 c. w. Reducing Emissions, Increasing Efficiency, Maximizing Profits Page 4 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 Reducing Emissions, Increasing Efficiency, Maximizing Profits Page 5 Molecular Gate® CO2 Feed Compressor Enriched CH4 30 psia 10 psi pressure drop PRODUCT C1, C2 FEED High Pressure C1, C2, C3, C4+ CO2, H2O Pressure Swing Absorption 5 psia TAIL GAS CO2, H2O, C3+, Lost HCs Vacuum Compressor Reducing Emissions, Increasing Efficiency, Maximizing Profits Page 6 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/CO2%20Removal-1.pdf Reducing Emissions, Increasing Efficiency, Maximizing Profits Page 7 Comparison Amine Process Morphysorb® Process Molecular Gate® CO2 Absorbent or Adsorbent Water & Amine Reduce Pressure & Heat Amine & Steam Morpholine Derivatives Reduce Pressure to Vacuum Electricity Titanium Silicate Reduce Pressure to Vacuum Electricity Regeneration Primary Operating Costs Reducing Emissions, Increasing Efficiency, Maximizing Profits Page 8