Biomass and coal coupling burning method

The invention belongs to the technical field of biomass thermal energy conversion and utilization, and particularly relates to a biomass and coal coupling burning method. The biomass and coal couplingburning method comprises the following steps that (1) biomass is subjected to splitting decomposition through a two-stage type biomass continuous thermal decomposition device to generate biomass charcoal; (2) after the biomass charcoal is mixed with coal, a mixture enters a coal pulverizer and is pulverized into coal powder with the particle size of 20-50 [mu]m under the rotation speed of 25-100r/min, the pulverized coal powder mixed with the biomass charcoal enters a coal powder chamber and passes through a powder feeding machine and burns in a coal powder boiler through a coal powder burner, and heat supplying or power generation towards outside is realized; and (3) smoke discharged by coal power boiler in the step (2) is sampled through special equipment, the abundance of Carbon-14 inthe sample smoke is detect