AN IMPROVED REFRACTORY MOUTH FOR OIL BURNERS OF CFBC BOILERS

摘要

The invention relates to an improved refractory mouth for oil burner formed of refractory material for CFBC boiler, refractory mouth (5,6); a seal box (7) constructed to act as an air chamber (11) as well as a supporting means for the refractory mouth (5,6), the improvement is characterized in that the refractory mouth (5,6) is segmented into an upper refractory mouth (5) and a lower refractory mouth (6) each made up of refractory materials, in that a cold air connection (9) from the cold air source line of the CFBC boiler is extended to terminate into the air chamber (11), and in that air nozzle (10) is formed between the upper and lower refractory mouth (5,6) to force a cold air flow over the surface of the lower refractory mouth (6) at the bottom to eliminate clinker formation including reducing the surface temperature of the refractory materials.