Characteristic Study of Kaolin on Agglomeration Caused by Burning Black Liquor in Fluidized Bed

摘要

Experiments were carried out to investigate the characteristic of kaolin on agglomeration mechanism of the black liquor combusted in a bench-scale fluidized bed. The combustion experiments were focused on the influence of different operating conditions at three temperatures (700°C, 750°C and 800°C), and at three kaolin additive dosages(0, 10% and 30%). Sinter of the bed material collected after experiments were analysed by scanning electron microscope (SEM) and X-ray diffractometry (XRD). The results show that kaolin is a significant additive in improving the black liquor combustion in a fluidized bed. With the kaolin dosage increases, the degree of agglomeration decreases.