Method for operating gas turbine, involves determining calorific value of gas prior to combustion to control combustion chamber at constant temperature

摘要

A sample of the hot waste gas from a chemical process is bled off to a measurement cell radiated with light. The relative concentrations of the main constituents of the gas are measured based on the Raman scatter of their molecules, derived from the spectral distribution obtained from a spectrograph. This enables the fluctuating calorific value of the gas to be determined before the gas enters the combustion chamber An Independent claim is included for a device for operating the gas turbine.