The structure and principle of a novel low NO x burner

multi-enrichment low NO x burner

and its application in a 65 t/h boiler have been presented. Results of application show that the said burner maintains the good behavior for ignition and combustion stabilization of multi-enrichment type burners

and has very good low NO x combustion performance. Comparing with the original burners

after adopting the new type burner

the slagging phenomenon in furnace has improved to some extent

carbon content in fly ash has slightly reduced

the exhaust flue gas temperature hasn’t obviously changed

having manifested their bright prospects for spreading application.