Abstract: A thermogravimetric analyzer and a one-dimensional sedimentation furnace were used to study the combustion characteristics, burn-out characteristics, contamination characteristics, and emission characteristics of biomass black particles and their 1:1 blended fuel blended with lignite. Studies have shown that the biomass black particle fuel and blended fuel are both highly combustible and burnout fuels; the contamination caused by burning black particles has little effect on heat exchange; after the amount of outlet oxygen increases, the burning of black particles The heat transfer performance is enhanced, but the heat transfer performance of the fuel blended fuel is weakened; the concentration of NO in the combustion of black particles decreases with the rise of temperature, and the concentration of NO in the blended fuel increases with the rise of temperature; the increase of oxygen increases the concentration of NO High; Blended fuel has a higher SO2 release than pure biomass; Hg emission concentration under all working conditions is 0; the concentration of HCl produced by pure black particles is higher; and the rise of temperature will cause more HCl release ; After the oxygen content increases, HCl is diluted and the concentration decreases. In addition, the emission concentration of PM2.5 from burning pure biomass is lower than that of blended fuels.