The relationship between the tendency of lignites to agglomerate and their fusion characteristics in a fluidized bed combustor

Although the agglomeration tendency appears to decrease with increasing ash initial deformation or fusion temperatures, no meaningful correlation was found, at least for the lignite ashes tested, between the agglomeration and characteristic ash temperatures. In the fluidized bed combustor burning lignites, agglomeration temperature of ashes decreases with Na2O content and increases with Al2O3 content. Fluidized bed combustor, on the other hand, becomes more vulnerable to agglomeration as the total basic oxide content of bed inventory increases.