Raman composition analysis of gas turbine fuel feeds
How Raman spectroscopy helps to future-proof gas turbine fuel systems
As the world shifts toward decarbonization, the fuel flexibility of gas turbines is being embraced as a way to reduce carbon emissions in the energy ecosystem. Modern heavy-duty industrial turbines have been designed to accept a much wider range of fuel blends. Many companies around the world are turning to gas turbine manufacturers to ask if it is possible for their existing turbine assets to burn hydrogen-rich fuels.
Provides fast, accurate, non-destructive composition analysis of gas turbine fuel feed composition
Protects and optimizes gas turbines by delivering results in time to make critical operational changes
Is tailored to meet specific fuel feeds or developed to handle a wider range of fuel compositions and blends
Delivers quicker updates with far higher uptime than conventional separation-based analysis methods such as GC and MS
Provides future-proof measurements for carbon-free fuels, such as hydrogen and ammonia
The challenge
An extended evaluation of a Raman gas-phase analyzer to monitor turbine fuel feed was undertaken at a power gas turbine technology laboratory. The owner of this site typically shipped four different analyzer technologies with each turbine, including a calorimeter, a redundant pair of gas chromatographs, an oxygen analyzer, and a CO2 analyzer.
The solution
The Raman analyzer was integrated with the gas fuel stream by means of a bypass to a Raman fiber optic probe mounted in a simple union cross interface. Measurements were made at the fuel feed pressure of 350 psia. The mass spectrometer required sample transfer lines and sample conditioning prior to the injection port. Extensive studies of rapid transient events were undertaken with both analyzer systems.
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