The straw

sawdust and rice husk were selected as the raw biomass materials to blend with different coals

thus to investigate the effect of blending ratio on combustion efficiency of the boiler.The results show that

co-firing biomass in coal-fired boiler leads to slagging in primary combustion zone

corrosion on heating surface

and drop of boiler efficiency.The suitable biomass and appropriate reduction in biomass blending ratio can solve the problems like boiler combustion efficiency drop and corrosion and slagging that caused by co-combustion with biomass

thus to promote the biomass utilization further.