Biomass combustion system

The invention relates to the technical field of biomass combustion, in particular to a biomass combustion system which comprises a combustion module, and the combustion module comprises a box barrel and a frame barrel. A first gas inlet is formed in the box barrel and used for inputting gas needed by combustion. The frame barrel is arranged in the box barrel, vent holes are formed in all faces of the frame barrel, the frame barrel is used for containing and supporting biomass fuel, and the frame barrel and the face, provided with the first air inlet, of the box barrel are arranged at intervals. Namely, gas required by combustion can be stored in the interval space between the frame barrel and the box barrel, so that the possibility that biomass fuel is in contact with the gas in a combustion area is increased, and the fuel can be combusted more sufficiently. 本发明涉及生物质燃烧技术领域，尤其涉及一种生物质燃烧系统，包括燃烧模块，燃烧模块包括箱桶和架桶。箱桶上开设有第一进气口，以输入燃烧所需气体。架桶设置在箱桶内，架桶的各个面上均开设有通气孔，架桶用于容纳支撑生物质燃料，架桶与箱桶开设第一进气口的面间隔设置。即在架桶与箱桶的间隔空间内可存储燃烧所需气体，以增加