Talking about biomass burner and coal water slurry combustion technology
Writer： admin Time：2021-09-14 16:33 Browse：℃
The mixed combustion of biomass and coal (or coal water slurry) is a new type of combustion method that comprehensively utilizes biomass energy and coal resources while reducing pollution emissions. my country's biomass energy accounts for 33% of the total primary energy and is the second largest energy source after coal.
In addition, my country's coal-burning pollution discharges serious, and the development of biomass and coal (or coal water slurry) mixed combustion (co-combustion) technology can not only reduce environmental pollution but also use renewable energy technology, which is very suitable for my country's national conditions.
In large coal-fired thermal power plants, the mixed combustion of biomass and fossil fuels not only provides opportunities for the optimization of biomass and fossil fuels, but also allows many existing coal-fired equipment to be put into use without much modification, making the entire The equipment investment cost of the project is reduced.
The mixed combustion process of biomass and coal (or coal water slurry) mainly includes the evaporation of water, the combustion of biomass and volatile matter in the early stage, and the combustion of coal in the later stage. Single biomass combustion is mainly concentrated in the early stage of combustion; single coal combustion is mainly concentrated in the later stage of combustion. In the case of mixed combustion of biomass and coal (or coal-water slurry), the combustion process is clearly divided into two combustion stages. As the mixing proportion of coal increases, the combustion process gradually concentrates in the later stage of combustion. The preliminary analysis temperature of the volatile components of biomass is much lower than that of coal, which makes the ignition and combustion earlier.
After the coal is mixed with biomass, the fire performance of the coal can be improved. When coal and biomass are co-fired, the combustion rate tends to move forward, and at the same time, better burnout characteristics can be obtained. The calorific value of biomass is low, and the heat release during the combustion process is relatively uniform. Almost all the heat release of a single coal combustion is concentrated in the later stage of the combustion. The addition of human substances to coal can improve the distribution of combustion heat release, enhance the heat release in the early stage of combustion, and increase the utilization rate of biomass.
The above is an introduction to the process of mixed combustion of biomass burners and coal water slurry for you. If you want to know other content of biomass pellet burners, please pay attention to Zhengzhou Bona Thermal Energy Equipment Co., Ltd.!