Abstract: In order to meet the requirements of new environmental protection laws and regulations, revamp of low nitrogen burners is carried out for all the heating furnaces that fail to meet the discharge standards. Aiming at the heating furnaces that operate continuously and can’t be shut down in a short period of time, a revamp method of online non-stop furnace low nitrogen burner is studied. In the case that the original brazier and refractory brick can't be changed, the old round air staging burner is transformed into fuel staged burner to reach the goal of low pollution emissions.

Key words: online non-stop furnace, low nitrogen burner, revamp method, low pollution discharge