Inhibiting vanadium-induced corrosion

Vanadium is an undesirable impurity in fuel oil because its common oxide, vanadium pentoxide, lowers the melting point of ash deposits and causes severe corrosion, particularly in the presence of alkali metal compounds. A 48-hour laboratory study was made of simulated effects of low excess air during oil combustion, with and without the addition of corrosion inhibitor to the ash. The results showed that the effects of low excess air and inhibitors were additive in reducing corrosion rates, with low excess air having the greatest effect