Impurity Deposits in Gas Turbines from Fuels Containing Sodium and Vanadium

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Abstract
A thermochemical analysis of impurity deposits in gas turbines has been carried out for liquid fuels containing sodium and vanadium. The predominant species containing these elements are , , and in the gas phase and , , and in the condensed phase. The minimum concentrations of sodium and vanadium in the ruel above which deposition can occur have been determined for various operating conditions of the gas turbine. Effects of the air/fuel ratio, sulfur impurity level, temperature, and pressure have been considered. Detailed calculations have also been performed to determine the composition and amount of deposit per gram‐atom of gas for a gas turbine operating at 5 atm at an air/fuel ratio of using a fuel containing 1 w/o sulfur with different amounts of sodium (0.1–10 ppm) and vanadium (0.1–30 ppm).

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