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      Stationary gas turbines were originally developed as air craft engines and are applied to drive generators. Installations are used to generate peak load electrical power and often, together with a waste heat boiler, to generate heat energy. The flue gas composition is very similar to that of gas fired furnaces. Typically natural gas, landfill gas or biogas is used as fuel.

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Use of gas analysis for e.g.

  • Monitoring the turbine emission for optimum operation
  • Monitoring emission concentrations for compliance with regulations

Turbine Plant Gas Analysis
Process flow chart of a gas turbine plant with measuring points

Measuring point locations and analysis tasks

  • MP 1 at the turbine outlet for monitoring the turbine emission (optimum operation)
  • MP 2 at the stack for emission monitoring (compliance with regulations)

Measured
component

Typical values
 

MP 1

MP 2

O2

15 ... 18%

15% (Reference value)

NOx

0 ... 60 ppm

<35ppm

CO

0 ... 30 ppm

<15ppm

CO2

    

Dust

    

Flue gas temp.

572 ... 752°F

  

Gas flow

    

Humidity

    

Typical values of a gas turbine plant

Hint:
A dynamic partial vacuum exists at the measuring point MP 1. The sampling point therefore must be carefully sealed in order to prevent ambient air from being sucked in and cause incorrect measurements.

Our reference handbook, "Flue Gas Analysis in Industry" is a helpful guide describing over 25 different industrial process applications.

testo Flue Gas Analysis in Industry

Topics include:

  • Where and how to test
  • How and why testing can help your process
  • Concentrations of combustion gas in application
  • Regulations
  • Calculation
  • And more!