General Electric Company

Ge Energy Products France Snc

Michel Marie Raymond Moliere

Matthieu Paul Frederic Vierling

Christophe Fabrice Verdy

Dmitry Sokolov

A method of operating of a gas turbine engine to inhibit vanadic corrosion of the gas turbine engine is provided. The gas turbine engine burns a vanadium-contaminated fuel and includes a component configured to be in contact with combustion gases. The method includes introducing into a combustion system of the gas turbine engine a first oxide and at least one second oxide. The first oxide includes magnesium oxide, and the at least one second oxide includes at least one of aluminum oxide, iron (III) oxide, titanium dioxide, and silicon dioxide. The method further includes cleaning at least a portion of the component using a cleaning agent containing a liquid vector and at least one descaling material that is suspended in the liquid vector. The at least one descaling material is an inorganic material.

Method of operating a gas turbine engine burning vanadium-contaminated liquid fuel

A method of inhibiting vanadic corrosion of a hot part of a gas turbine system is provided. The method includes introducing, in the combustor, a first oxide comprising magnesium oxide (MgO) and at least one second oxide from among AlO, FeO, TiOand SiO. A ratio 'm' of a number of moles of MgO to a number of moles of VOand a ratio 'a' of a total number of moles of the at least one second oxide to the number of moles of VOsatisfy two conditions based on a firing temperature of the expansion turbine, an average density of one or more double oxides formed by a reaction between MgO and the at least one second oxide, and an average Knoop hardness of the one or more double oxides formed by the reaction between MgO and the at least one second oxide.

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Belfort, France

Michel Marie Raymond Moliere