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Fuel Gas Pressure Boosting

There was a lot of talk at the recent Turbo machinery Symposium about fuel gas boosting compressors.  Fuel gas boosting compressors are now a part of most gas turbine systems.  Today’s gas turbine designs operate more efficiently and reliably, but require higher fuel gas pressures than is available from adjacent gas utility pipelines.  To complicate matters, operators must plan for fluctuations in the pipeline pressures.  Although 300 psig is adequate for older industrial gas turbines and could sometimes be reached with pipeline pressures, newer industrial turbines require 600 psig.  Aeroderivative gas turbines can handle load changes more quickly but may require supply gas pressures up to 1000 psig to operate most efficiently.  Because available gas pressures are much lower, fuel gas booster compressors are needed to raise gas supply pressure feeding the gas turbine. FGB compressors must have a large turndown range and the ability to handle gas pressure fluctuations from the pipeline while delivering constant discharge pressure. Fuel gas boosting compressors have recently been deployed in a wide variety of industrial facilities and processes including: peak power plants, oilfield power generation and landfill gas to power projects

What is your experience with fuel gas boosting compressors?  Find out more about fuel gas boosting at http://www.emersonclimate.com/en-us/Market_Solutions/Industrial/Hydrocarbon_Processing/Pages/FuelGasBoosting.aspx

Mark McCormick
Director, Gas Compression
Emerson Climate Technologies

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