Properties of Particles in the Fly Ash of a Biofuel-Fired Circulating Fluidized Bed (CFB) Boiler
作者： Linda S. Johansson , Bo Leckner , Claes Tullin , Lars-Erik Åmand , Kent Davidsson
DOI: 10.1021/EF800266C
关键词:
摘要: A quench/dilution probe was designed and used for sampling of particles vapors in the flue gas upstream convective path a circulating fluidized bed boiler. Downstream path, sampled by heated probe. The lead through low-pressure impactors analysis mass size distribution particles. were analyzed Cl, S, K, Na, Ca, Mg, P, Al, Fe, Ba, Mn, Si. series tests carried out to study minimization problems originating from alkali content fuel, including effect additives change material, co-combustion with sewage sludge. Particle concentration composition compared deposit growth on probe, which represents superheater. Alkali chloride online measurements gaseous chlorides. continuous deposition heat-transfer surface illustrated calculation reduction heat transfer means temperature drop gas. Fine ( 1 μm) increased. These test cases also showed lowest superheater deposited mostly coarse ones. most favorable case respect low deposits
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