Numerical study of hydrogen and steam injection in order to reduce Carbon monoxide production due to Carbon dioxide injection into Oxidizer in Oxy-Fuel combustion

In this article, steam injection into oxidizer and hydrogen injection into fuel are studied in order to reduce carbon monoxide production with CO2 injection into oxidizer in oxy-fuel combustion. For this purpose, one dimensional simulations with a counter flow diffusion flame solver and three dimensional simulations with openFoam software were performed. In the one dimensional simulations, the effects the injections on carbon monoxide emission index are investigated. The results indicate that injecting steam into the oxidizer decreases carbon monoxide emission index, while injecting hydrogen into the fuel acts in reverse. In the three dimensional study, due to very high computational costs, only the effect of steam injection into oxidizer is investigated as a suitable solution for reducing carbon monoxide emissions. The results obtained in thesesimulations show that steam injection in the oxidizer reduces of carbon monoxide production in the reactionzone and also the emissions from the furnace outlet.