Method for forming biomass fuel

Abstract

The invention discloses a method for forming a biomass fuel and particularly relates to a method for forming a biomass fuel by using plant straw, wood flour, shrub, grass and the like as raw materials. In the method, biomass, coal dust and kieselguhr are used as raw materials and are crushed, mixed and compressed to be formed. The stable calorific value of biomass of different types and from different places can be obtained by adjusting the mixing ratio of coal to the biomass; under the condition of rated stable working conditions of a boiler, the influences of alkaline corrosion on the biomass are eliminated, the bonding forming of the crushed biomass particles is promoted effectively, the formed particles have high physical quality and properties, the compression forming rate is improved and energy consumption for forming is reduced. The biomass fuel of the invention can make full use of the straw, wood flour, shrub and grass and other wastes, and helps to reduce the demands for coal, natural gas and other non-renewable energy resources and relieve environmental pollution caused by combustion; and the biomass fuel has the advantages of improving volumetric heat release rate of the boiler and furnace temperature, improving thermal efficiency of the boiler, along with stable calorific value, alkaline corrosion resistance, quick ignition, high combustion efficiency, and the like. The biomass fuel can be used in biomass combustion power generation, and thus, the problem caused of lack of regional biomass that at present biomass power generation cannot be performed continuously and stably.

Description

Technical field: [0001] The invention relates to a biomass fuel molding method, in particular to a biomass fuel molding method using plant straws, wood chips, shrubs, weeds and the like as main raw materials. Background technique: [0002] China is a large agricultural country with abundant crop straw resources. However, due to the low level of comprehensive utilization of straw at present, a considerable amount of crop straw is discarded in the fields. Whenever the harvest season, the phenomenon of burning straw in farmland can be seen everywhere. This not only caused a huge waste of resources, but the smoke from burning straw also caused serious pollution to the atmospheric environment, and also became a hidden danger that caused fires, traffic accidents, and burned wires and communication cables. How to make full use of the large amount of straw renewable resources has attracted increasing attention from government departments at all levels and all sectors of society. This not...

AI Technical Summary

Problems solved by technology

However, due to the shortcomings of current molding equipment such as high energy consumption, easy damage, complex process, low production efficiency, and high cost, and the problems of unstable calorific value and alkali corrosion in the combustion process of molding fuels, it is difficult to widely promote biomass molding fuels.