Biomass pyrolysis gas engine is multi-functional types of biomass pyrolysis, a reliable converted to high-quality no residual heat, instead of coal, electricity, oil and gas heating. It has half a ton, a ton, two tons, three tons, four tons ...... and other models. Each model was divided into two types AB, A class refractory material used for insulation ordinary. Class B insulation with recycled water, along with provision of hot water and with heating function.