Low NOx Burners
A low NOx burners is a multi fule burners as :- Coal Gas Oil A low nox burners have following benifits This burner provide most effective NOx reduction without affecting boiler performance. With high rate of firing there are some NOx are formed. As per air quality index it should be exist within prescribed limit. Heavier oil leads to higher nitrogen content. Lightoil contain less nitrogen. Thelow nox burners are modified axial flow burners with Reduced excess air More split air stream Gas recirculation at time. Working principal of low nox burners Lower excess at r reduce the tendency of form nox due to the scareity of oxygen. As the air stream is split the combustion takes place in stage and this protected combustion does not permit flame temperature to reach this peak. So flame starve of both temperature and free air which suppracing the nox forming tendancy. This reduce more than 50% nox reduction. For achieving 70% NOx reduction flue gas from furnace are recirculated and reduc