Experimental in-flame study of a 15 MW dual fuel gas/oil burner

Extensive in-flame measurements have been carried out on a 15 MW dual fuel burner, in order to obtain more information on the influence of different b urner head configurations on the profiles of chemical species in the flame. Together with stack measurements of NO, concentrations, this will improve our knowledge on the formation of NO, in this installation. In a half plane of the installation at four axial distances radial concentration profiles were recorded. For these measurements an FTIR analyser has been configured to allow the simultaneous quantification of CO, CO2, CH4, C2H6, C2H2, C2H4 and NO concentrations on a continuous base. The calibration of the analyser has been carried out by the multivariate PLS 1 algorithm, with calculated standard spectra, which avoids elaborate lab calibration procedures. The co mparison of concentration profiles of CH4 and C2H6 close to the burner mout h for different burner head configurations, gives a good indication of how the fuel is injected in the installation and together with the C2H4, C2H2 c oncentrations gives more information about the combustion itself. (C) 1999 Elsevier Science Ltd. All rights reserved.