SAI Juncong, ZHAO Ming, FAN Wenwu, et al. Numerical simulation on slagging-proof retrofit scheme for a 300MW unit bituminous coal fired boiler[J]. Thermal power generation, 2015, 44(2): 119-124.
SAI Juncong, ZHAO Ming, FAN Wenwu, et al. Numerical simulation on slagging-proof retrofit scheme for a 300MW unit bituminous coal fired boiler[J]. Thermal power generation, 2015, 44(2): 119-124.DOI:
Serious slagging occurred in a 300 MW unit firing easy-slagging low quality bituminous coal.Thus
retrofitting scheme that shrinking tangential circle diameter of the secondary air and reduce the gas flow swirling intensity was put forward.Moreover
numerical simulation was carried out to investigate the combustion process before and after the transformation.Analysis on velocity field
coal particle trajectory
temperature field and O2/CO concentration field shows the slagging in furnace was improved dramatically and the combustion stability was enhanced.Half-year operation on this unit verified the rationality of this retrofit scheme.