Application characteristics of biomass boiler
Definition of Biomass Broadly defined biomass energy includes all solar energy that is transformed and fixed by photosynthesis of plants. There are many definitions of biomass as a carrier of biomass energy. The United States Department of Energy (DOE) defines biomass as: Biomass comes from plant and animal organisms. Types of biomass: Biomass commonly used for energy conversion can be divided into four categories: wood residues (covering all materials derived from wood and wood products, mainly including: fuelwood, charcoal, waste wood and forest residues), agricultural waste (All waste) related to cultivation and crop processing.
For example: rice husks, straw and animal manure, energy crops (crops specifically for energy production, such as sugar cane stalks and cassava) and municipal solid waste (MSW). Detailed description of biomass boilers Biomass fuel characteristics: According to Swedish and EU biomass particle standards, biomass particles should have the following characteristics.
The diameter is usually 8 mm, the length is 4 to 5 times the diameter; the damage rate is ≤1.5%? 2.0%; the moisture content on dry basis is ≤10%? 15%; the ash content is ≤1.5%; the sulfur and chlorine content is Content ≤ 0.5%; Calorific value: The European Union does not have a clear requirement, Sweden requires ≥16.9MJ. Utilization and transformation of biomass: There are three main ways of using biomass for transformation: thermochemical method, biochemical method and extraction method.
Thermochemical method refers to a conversion technology that converts biomass into other forms of energy at high temperatures. It mainly includes four methods of direct combustion (direct combustion of biomass to directly release heat); gasification (the process of partially oxidizing biomass and converting it to gaseous fuel with the participation of gaseous media such as oxygen, air or steam).