On August 2, the "Research and Application of Co-Firing Biomass Fuel in Coal-Fired Boilers," developed by CHN Energy, was recognized as world leading level by the China Society for Electrical Engineering.
This technology proposes a full industrial chain model for the co-firing of high-moisture raw agricultural biomass, covering collection, storage, processing, transportation, and co-firing (distributed collection + centralized processing + stable co-firing). This model broadens the scope of biomass utilization. The research includes a flow measurement device suitable for low-density powder materials, enabling continuous, stable, and precise metering of biomass powder fuel. Additionally, the technology involves the stable feeding, high material-to-gas ratio pneumatic conveying, and post-grinding co-firing of biomass powder fuel, achieving long-distance stable transportation, uniform mixing, and efficient combustion.
Currently, the technology has been demonstrated and applied in a 1000 MW coal-fired boiler at the CHN Energy Shouguang Power Generation Co., Ltd. The trial operation indicates that the co-firing of biomass powder at a rate of 25.36 tons per hour correspondingly reduces the coal consumption of the boiler by 11.29 tons per hour (measured as standard coal). In the operation, the co-firing biomass at this ratio does not have significant adverse effects on the boiler's combustion stability, heat surface fouling, or pollutant emissions. The application of this technology strongly promotes the coupling and co-firing of biomass with coal-fired power plants, reducing resource waste and facilitating solid waste disposal, with broad application prospects.
