What are the ways to use biomass energy?

Biomass energy is an energy form in which solar energy is stored in biomass in the form of chemical energy, that is, energy with biomass as the carrier. It directly or indirectly comes from the photosynthesis of green plants, and can be converted into conventional solid, liquid and gas fuels, which are inexhaustible. It is a renewable energy source and the only renewable carbon source.

There are three main ways to utilize biomass energy: direct combustion, thermochemical conversion and biochemical conversion. Direct combustion of biomass will remain the main way to utilize biomass energy in China for a long time to come. At present, the traditional wood-burning stove with thermal efficiency of only about 10% is reformed, and the wood-saving stove with efficiency of 20%-30% is popularized as an energy-saving measure with simple technology, easy popularization and obvious benefits. It is listed as one of the key tasks of rural new energy construction by the state. Thermochemical conversion of biomass refers to the technology of gasification, carbonization, pyrolysis and catalytic liquefaction of biomass under certain temperature and conditions to produce gas fuel, liquid fuel and chemical substances. Biochemical transformation of biomass includes biomass-biogas transformation and biomass-ethanol transformation. Biogas conversion refers to the conversion of organic matter into combustible mixed gas with methane as the main component through microbial fermentation in anaerobic environment, that is, the conversion by biogas and ethanol.