Method of operating a thermal installation and use of such a method for inhibiting vanadium corrosion

Abstract

The invention relates to a method of operating a thermal installation comprising a combustion chamber fed with a fuel contaminated vihth vanadium, with sulphur and possibly with sodium. In particular, the combustion chamber1 is also fed with boron and with magnesium, in quantities such that the sodium molar ratio s'- £la2SO4A / 2O5. the magnesij / rh molaV ratio m - MgO / V2O5 and the boroh molar ratio b = Β2Ο3 / V2Ο5 satisfy the equation m>3+2b-s, so that the combustion products comprise magnesium orthovanadate, mixed magnesium boron oxide arid possibly sodium borate. The invention also relatesΛόφο use of such a method to inhibit corrosion of the thermal installation £y vanadium oxide, possibly in the presence of sodium.