The Influence of Volatile Alkali Species on Coating Formation in Biomass Fired Fluidized Beds

B. Gatternig, U. Hohenwarter, H. Schröttner & J. Karl
The research in this paper focuses on the mechanisms leading to bed agglomeration in biomass fired fluidized bed combustion. This phenomenon is caused by low melting ash components and is responsible for the bed particles to stick together and the eventual disruption of the fluidization. An alkali containing ash layer is formed around the particles, which in turn acts as an adhesive for the agglomeration. This paper investigates one of the suggested effects leading to...