CGA G-4.1 & EIGA Cryogenic Distillation Standards • Industrial Gas Engineering
Industrial Cryogenic Air Separation Unit (ASU) Sizer
Size industrial cryogenic distillation facilities separating atmospheric air into high-purity oxygen ($O_2$), nitrogen ($N_2$), and argon ($Ar$). Model multi-stage Main Air Compressor (MAC) power, molecular sieve pre-purification (PPU), high/low-pressure column distillation, liquid product liquefaction penalties, and Levelized Cost of Gas ($/ton).
⚙️ Production Capacity & Gas Purity
💵 Industrial Power Tariffs & Capital Investment
⚡ ASU Energy Work & Separation Economics
Heavy Industrial ASUTotal Plant Power
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MWe Connected Load
Specific Power (O₂)
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kWh / Metric Ton O₂
Annual Pure O₂
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Metric Tons / Year
Net Cost of O₂
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$/Ton (Post N₂ Credit)
Operating Economics & Byproduct Valorization
Turnkey ASU CapEx:
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Annual Electricity OPEX:
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O&M, Water & Catalyst Replacements:
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Byproduct N₂ Annual Revenue:
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Gross O₂ Production Cost:
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Net Annual Operating Margin:
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Cryogenic Distillation Thermodynamic Efficiency
Atmospheric multi-column fractionation extracts pure oxygen, inert nitrogen, and high-value argon simultaneously
HIGH-EFF
ASME / CGA Certified
📐 Cryogenic Air Separation & Compression Physics
• Atmospheric Air Composition: 78.08% N2, 20.95% O2, 0.93% Ar
• Air Intake Factor: ~4.8 to 5.2 Nm³ air feed per Nm³ pure O2 produced
• Specific Power: Gaseous O2 (GOX) ~240 to 290 kWh/ton O2 | Liquid O2 (LOX) ~580 to 720 kWh/ton O2
• Byproduct Nitrogen Ratio: 1 ton O2 yields ~3.3 tons pure N2 (monetized for inert purging & food freezing)
• Net O2 Cost ($/ton) = (Total_Annual_OPEX + Annualized_CapEx - N2_Revenues) / Annual_O2_Tons