NGL Separation -Applications • Dew point control ...indagro.net/Gas_Separation_Technology.pdf ·...
Transcript of NGL Separation -Applications • Dew point control ...indagro.net/Gas_Separation_Technology.pdf ·...
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Projects - Machinery- Engineering- Automation – Gas -Water- Power & Fluids Technology
Indagro Engineered Systems
Gas Membrane Separation Technology
NGL Separation -Applications
• Dew point control • Conditioning of rich fuel gas for turbine specs • Gas “Up-grade” or “enrichment”• Several reference plants • Good fix for “black start gas” problem
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History of NGL Membrane Applications
• A long history of use for various hydrocarbon separation and recovery applications
• Commercial success – Prestigious Kirkpatrick Award Winning Technology
Applied for wide range of flows: 0.2 to 90 MMscfdApplied at wide range of pressures: 50 to 1,000 psia
• More than 80 reference plants worldwide• Customers include ExxonMobil (8 Plants), BP Amoco (4
Plants), Sabic (4 plants), Formosa (10 plants)• More than 400 years of cumulative on-stream time
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Composite Membranes: A Breakthrough in Membrane Technology
• Reduced pretreatment
• Greater flexibility in material selection
• Better performance
• Many new applications
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NGL Separation - Applications
• Dew point control• Conditioning of rich fuel gas for turbine specs
• Several reference plants• Good fix for “black start gas” problem
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Fuel Gas Conditioning Process Design
Main gas line
Membrane skid
Gas engine
Conditioned gas
dew point 4 ˚C
Pipeline gas
Main pipeline compressor
Raw fuel gasdew point
35 ˚C
Rich recycle gas
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Nitrogen Removal Process
Recycle gas(10-15% N2)
Separator
Pipeline gas(<4% N2)
Nitrogencontaminated
Fuel gas(50% N2)
low-pressure gas(10% N2)
CompressorCondensate
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Nitrogen Removal Skid
• Operational since November , 2002
• Constant performance reducing N2 content in natural gas from 6.5 mol-% to 2.5 mol-%.
• System Turndown to 50% on the fly
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CO2 Removal: High CO2 Feed Gas
Pipeline product(2% CO2)Lean solvent
Membrane skids Solvent process(Bulk CO2 removal) (Polishing step)
Solvent to regeneration
CO2 depleted gas to solvent process
(8% CO2)High CO2feed gas
(60% CO2)To fuel/reinjection
(>90% CO2)
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H2S Removal – Fuel Gas Treatment
Main gas line
Membrane skid
H2S enriched recycle gas
High H2S Fuel 3400 ppm
Pipeline gasMain pipeline compressor
Low H2S Fuel To Engines
40 ppm
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NGL Separation – UEG (El Paso) System
• Operational since May, 2002
• Processing 90 MMSCFD @ 900 psig
• Constant performance reducing C3+ to meet Siemens Turbine Fuel Specs.
• System Turndown to 25%
• System delivery in 14 weeks.
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Nitrogen Removal Process – Green Ranch
• Reducing N2 content in natural gas from 24 mol-% to 4 mol-%.
• Unattended operation –Remote Monitoring
• Capacity: 1 MMSCFD
• Designed for maximum flexibility for variation in inlet pressure, product pressure and flow rate.
• Under Installation at Site