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AssigneeGE Energy Products France SNC
InventorsMichel Moliere, Emmanuel Rocca, Lionel Aranda, Aurelie Chiaravalle
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The invention provides a method of operating a thermal installation comprising a combustion chamber fed with a fuel contaminated with vanadium, with sulphur and possibly with sodium. In particular, the combustion chamber is also fed with boron and with magnesium, in quantities such that the sodium molar ratio s=Na2SO4/V2O5, the magnesium molar ratio m=MgO/V2O5 and the boron molar ratio b=B2O3/V2O5 satisfy the equation m≧3+2b−s, so that the combustion products comprise magnesium orthovanadate, mixed magnesium boron oxide and possibly sodium borate. The invention also provides for the use of such a method to inhibit corrosion of the thermal installation by vanadium oxide, possibly in the presence of sodium.
A method of operating a thermal installation comprising a combustion chamber fed with a fuel contaminated with vanadium, with sulphur and possibly with sodium, the method comprising feeding the combustion chamber with boron and with magnesium so that magnesium orthoborate and/or magnesium pyroborate is/are present in the combustion chamber, wherein the sodium molar ratio s=Na2SO4/V2O5, the magnesium molar ratio m=MgO/V2O5 and the boron molar ratio b=B2O3/V2O5 satisfy the equation m≧3+2b−s.
A method for inhibiting corrosion of a thermal installation by vanadium oxide, wherein the thermal installation comprises a combustion chamber fed with a fuel contaminated with vanadium, with sulphur and possibly with sodium, the method comprising feeding the combustion chamber with boron and with magnesium so that magnesium orthoborate and/or magnesium pyroborate is/are present in the combustion chamber, wherein the sodium molar ratio s=Na2SO4/V2O5, the magnesium molar ratio m=MgO/V2O5 and the boron molar ratio b=B2O3/V2O5 satisfy the equation m≧3+2b−s, thereby inhibiting corrosion of the thermal installation by vanadium oxide.
Dependencies are inferred from the claim text.