According to the Swedish and EU classification criteria for biomass particles, biomass particles can be roughly described as having the following characteristics: the diameter of the biomass particles is generally 6 to 10 mm and the diameter is the diameter. 4 to 5 times, the breaking rate is less than 1.5% to 2.0%, the dry water content is less than 15%, the ash content is less than 2%, the sulfur content and chlorine content are less than 0.07%, and the nitrogen content is less than 0.5%. If additives are used, they should be agricultural and forestry products and should indicate the type and amount of use. The EU standard does not provide specific values ​​for the calorific value of biomass pellets, but requires the seller to indicate it. The Swedish standard requires that the calorific value of biomass particles should generally be at 16.9 MJ.
The research and development of bioenergy technology has become one of the world's most hot topics, and has attracted the attention of governments and scientists around the world. Many countries have developed corresponding research and development programs, such as Japan's Sunshine Program, India's Green Energy Project, and US Energy Farms, among which bioenergy development and utilization account for a considerable share. Many bioenergy technologies and devices abroad have reached commercial application levels. Compared with other biomass energy technologies, biomass pellet fuel technology is easier to achieve large-scale production and use. The convenience of using bio-energy particles is comparable to that of gas and fuel. In countries such as the United States, Sweden, and Austria, bioenergy applications account for 4%, 16%, and 10% of the country's disposable energy consumption, respectively; in the United States, bioenergy
The total installed capacity of electric power has exceeded 1MW, and the single unit capacity has reached 10~25MW. In Europe and America, the biomass pellet fuel for the general households and the high-efficiency clean burning and heating stoves are very popular.
China also attaches great importance to the development and utilization of bioenergy. Since the 1980s, the Chinese government has consistently listed the research and application of biomass energy utilization technology as a key scientific and technological research project, and carried out research and development of new technologies for biomass energy utilization, which has further improved biomass energy technology. However, the research on the utilization of biomass energy in China mainly focuses on large and medium-sized livestock and poultry farm biogas engineering technology, straw gasification centralized gas supply technology and landfill power generation technology projects [1], for the production and processing of biomass pellet fuel products. Research on direct combustion utilization is just beginning.
Some domestic universities and research institutes have carried out research on biomass pellet forming technology and achieved certain results. However, there are still few bio-energy particle products promoted and applied in China. In order to industrialize and commercialize China's biomass energy particles as soon as possible, we analyzed the problems in their promotion and application, and discussed the countermeasures and methods. .
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