SOLID-FUEL-FIRED BURNER AND SOLID FUEL BOILER

摘要

A SOLID FUEL-FIRED BURNER THAT SUPPRESSES A HIGH-TEMPERATURE OXYGEN REMAINING REGION FORMED AT THE OUTER CIRCUMFERENCE OF A FLAME AND THAT CAN DECREASE THE AMOUNT OF NOx EVENTUALLY PRODUCED IS PROVIDED. A SOLID FUEL BURNER (20) THAT IS USED IN A BURNER SECTION OF A SOLID-FUEL-FIRED BOILER FOR PERFORMING LOW-NOx COMBUSTION SEPARATELY IN THE BURNER SECTION AND IN AN ADDITIONAL-AIR INJECTION SECTION AND THAT INJECTS POWDERED SOLID-FUEL AND AIR INTO A FURNACE INCLUDES A FUEL BURNER (21) HAVING INTERNAL FLAME STABILIZATION AND A SECONDARY-AIR INJECTION PORT (30) THAT DOES NOT PERFORM FLAME STABILIZATION, IN WHICH THE AIR RATIO IN THE FUEL BURNER (21) IS SET TO 0.85 OR MORE.