Zenith Applications for Combustion Power Plants

Power Generation: Combustion Power Plants - Chemical Injection

Industry challenge

In combustion plants that use a heavy fuel or ash forming oils for combustion such as blends, crude and residual oils, a vanadium corrosion inhibitor like organometallic magnesium (Mag-Oxide) is injected into the fuel which prevents the high temperature corrosion in gas turbines caused by vanadium. Crude oils and heavy residual fuels usually contain organic vanadium which is extremely corrosive to the hot gas path of the turbine. Vanadium is not present in liquid fuels in a water solute form and cannot be removed through the washing process.

Three Mag-Oxide additives are commonly employed in this process, magnesium sulfonate, magnesium oxide and magnesium sulfate. The final decision is largely dependent on the economics of the system and the amount of vanadium present in the fuel.