The color of the material returned is on the darker side
Thread Content
The boiler is not burning properly; the return material fan has been stopped, and the return material appears black in color. What could be the cause?
The fluidized bed does not burn coal; it burns biomass
Oh, then it’s not clear; I’m also learning* it*
The reason is poor combustion conditions inside the boiler due to various factors, resulting in a high carbon content in the fly ash at the furnace outlet. The causes include excessive primary air flow and insufficient secondary air flow, as well as poor fluidization of the bed layer due to coking and blocked air nozzles