Distillers grains & bagasse biomass fired steam boiler is DHL type with large volume, layer combustion, energy saving chain grate boiler, independently innovated and designed by ZG Boiler, which is on the basis of importing new technology through GEF project and domestic and foreign technology research of corner tube boiler, according to the technical development characteristics of domestic chain grate and market demand, which is reliable in the water cycle, high efficiency of combustion, and low pollution emission.