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Methane Slip Electrical Use Operations Cost Foot Print Ease of Operation 1 0.23 – 0.25 50 – 100 CAPEX Medium Medium PG&E GAS R&D AND INNOVATION TECHNICAL ANALYSIS: PRESSURE SWING ADSORPTION Table 1 Comparison of different biogas upgrading technologies (Langerak, 2018) Pressurized Water Scrubbing (PSW) Catalytic Absorption Pressure Swing Adsorption (PSA) Membrane Separation (MS) Cryogenic Liquefaction (CL) Unit Produced Gas Quality 98 99 97-99 99 99.5 % CH4 01 – 0.2 0.15 – 0.18 1 -3 0.25 85–100 Medium Medium Medium Medium 0.3 – 0.5 0.21 – 0.24 0 – 100 Low Low Small Easy 0.5 % 0.35 kWh/feed Reliability/Up Time 96 94 94 98 94 kW/Nm3 product Turn Down Ratio 50 – 100 75 – 100 % High % High Large Complex Low Large Medium Medium Large Medium+ Maintenance Needed Medium Medium+ Medium+ Low High Consumables/Waste Streams AC*3/Water AC*3/amines AC*3/adsorbents AC*3/none AC*3/None AC = Activated Carbon “PG&E” refers to Pacific Gas and Electric Company, a subsidiary of PG&E Corporation. © 2019 Pacific Gas and Electric Company. All rights reserved. PAGE 11 OF 12PDF Image | Pressure Swing Adsorption Technical Analysis
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CO2 Organic Rankine Cycle Experimenter Platform The supercritical CO2 phase change system is both a heat pump and organic rankine cycle which can be used for those purposes and as a supercritical extractor for advanced subcritical and supercritical extraction technology. Uses include producing nanoparticles, precious metal CO2 extraction, lithium battery recycling, and other applications... More Info
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