There is hope for coal as an important future energy source because of its abundant and
evenly distributed reserves. On the other hand, much lower NOX is desired to reduce environmental
load and MHPS has, in response to this desire, developed and commercialized an ultra-low NOX
burner (M-PM burner) to be used for coal-fired boilers. Verification tests for power generation
(with an output of 350-700MW, coal with an intermediate fuel ratio, about 10% ash) using 4 actual
boilers in which the burners alone or combustion burners and AA (Additional Air) nozzles were
modified demonstrated the achievement of the world's best ultra-low NoX level of 50-110ppm, also
finding measures applicable to reducing operating costs.
