The hot section of the gas turbine can get damaged by the presence of hydrocarbon liquid in the fuel gas. It will plug nozzles due to explosion and fire during the combustion cycles.
The hydrocarbon liquid can get into the turbine supply line from the gas scrubber through the sources:
- Pressure and gas flowrate exceed the scrubber capacity
- Surge in hydrocarbon due to fluctuation in gas pressure
- Wrong operation of the centrifugal separator
- Foaming in the pipeline leading to the scrubber