Biomass fuel and preparation method thereof

The invention relates to the technical field of biological energy sources, and particularly provides a biomass fuel and a preparation method thereof. The method comprises the following steps: (1) mixing a biomass charcoal source with water at 50-60 DEG C to obtain a mixed solution; (2) carrying out enzymolysis treatment on the mixed solution; the enzymolysis treatment comprises the following steps: mixing a mixed solution with a compound enzyme; the compound enzyme comprises cellulase, hemicellulase and laccase; (3) carrying out solid-liquid separation on the system obtained in the step (2), taking filtrate, and drying to obtain a dried material; and (4) mixing the dried material obtained in the step (3), boron nitride, ammonium chloride and magnesium oxalate, and carrying out extrusion molding to obtain the biomass fuel. Compared with the prior art, the biomass fuel prepared by the preparation method disclosed by the invention is high in combustion heat value and low in slagging rate. 本发明涉及生物能源技术领域，具体提供了一种生物