Strategic waste gas recirculation
The problem of nitrogen oxides (NOx) containment in industrial waste gas is everyday more crucial, and the next incoming environment laws are expected to be extremely restrictive, as a right protection to ambient and life. Stara Glass designed a simple and effective solution for NOx abatement in regenerative glass furnaces. It is scientifically known that a combustion, even at very high temperature, if it is developed in ambient that presents an oxygen concentration which is lower than the 21% atmospheric one, will produce a lower amount of NOx. In different industrial fields, it is very common to lead a part of combustion gas flow inside the combustion air flow, in order to reduce oxygen concentration and, consequently, NOx production. Furthermore, introducing in combustion air molecules that characterized by a polarity, like CO2 e H2O present in waste gas, the combustion air can receive heat for radiation, thus increasing hear recovery system efficiency and decreasing furnace consumption.