Studies in an atmospheric bubbling fluidized-bed combustor of 10MW power plant based on rice husk

Assessment of the rice husk lean-combustion in a bubbling fluidized bed for the production of amorphous silica-rich ash

“…As one kind of renewable energy source as well as its complex physicochemical characteristics, RH thermochemical conversion in atmospheric FBRs have attracted increasing research and development efforts. Several studies about thermochemical transformation (gasification and combustion) of RH in fluidized bed can be found in the literature (Armesto et al [3]; Fang et al [4]; Okasha [5]; Rozainee et al [6]; Singh et al [7]; Vélez et al [8]). …”

Characteristics of distinct ash flows in a biomass thermal power plant with bubbling fluidised bed combustor

“…The bottom ash from FBC results from periodic discharges of the bed, among other reasons, related to: i) bed renovation and replacement in order to avoid bed agglomeration and defluidization, ii) discharge of excess bed solids in order to maintain the optimal bed height, iii) bottom bed replacement by fresh sand with appropriate particle size distribution, to guarantee proper hydrodynamic conditions of the bubbling bed. For this reasoning the bottom ash from FBC are composed mainly of Si compounds, with values as high as 90 wt.% (expressed as SiO 2 ) [9,14,21,22,24]. Usually the fly ashes from biomass combustion are enriched in chemical elements typical of the inorganic content of the biomass, including heavy metals (e.g., Cr, Cd, Zn, Pb), when compared to bottom ash [1,6].…”

Study of fluidized bed combustion power plant using agri residues

“…Biomass like corn cobs, palm kernel shell and orange plantation residues, cotton seeds, cotton stalks, wheat straw, sawdust-wood, cottonseed burs and corn cobs are used in most of studies [1e5]. Few authors [5] conducted study on commercial plants using rice husk. Khan et al [6] discussed the agglomeration problems associated with fluidized bed combustors for certain herbaceous bio fuels.…”