Biomass energy is the most abundant renewable energy in the world. At present, people only use 1% ~ 3% of their output as energy, but it provides about 15% of the world's energy consumption, especially for developing countries. At present, there are about 654.38+0.5 billion people in the world who live by burning firewood, and China accounts for about half of them. Biomass energy is converted from solar energy, and solar energy is converted into chemical energy through photosynthesis of plants. The energy stored in biomass, like wind energy and solar energy, belongs to renewable energy, which can realize the sustainable utilization of energy. Technically, the core issues of biomass energy are vaporization and liquefaction. At present, the mature technology is biogas production by anaerobic fermentation of biomass. In 2006, the central government 1 proposed to increase the popularization of biogas. Using modern technology, biomass energy can be converted into biomass briquette fuel, biomass combustible gas, biomass liquid fuel, etc., which can replace fossil fuels. In terms of thermal conversion, biomass energy can be directly burned or converted into solid, gas and liquid fuels that are convenient for storage and transportation, and can be used in most industrial boilers and kilns that use oil, coal and natural gas. According to the energy report released by the International Fund for Nature in February 20 1 1, by 2050, 60% of industrial fuels and industrial heating will use biomass energy.