Roslyakov P.V., MPEI(TU)
Power boilers usually have several stages of burners or a few burners in one stage, at least. This allows to implement a method of non-stoichiometric combustion without any additional costs.
Non-stoichiometric combustion isn’t a conventional way of fuel combustion, arranging the separate reduction (α < 1) and oxidation (α > 1,2…1,25) combustion zones in the furnace while maintaining the traditional excess air at the furnace outlet.