Methods of operating a gas turbine to inhibit vanadium corrosion
US9556393B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 30, 2013 |
| Grant date | Jan 31, 2017 |
| Priority date | — |
| Expiry date | Oct 11, 2035 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10L2290/60
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
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 Al2O3, Fe2O3, TiO2 and SiO2. A ratio “m” of a number of moles of MgO to a number of moles of V2O5 and a ratio “a” of a total number of moles of the at least one second oxide to the number of moles of V2O5 satisfy 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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.