Biomass energy is the earliest, most and most direct energy used by human beings. Before the large-scale utilization of coal fuel in the 18th century, human beings mainly relied on wood as fuel. The energy contained in biomass is quite amazing. According to estimates by biologists, the total amount of biomass energy grown on the earth every year is about 140-180 billion tons (dry weight), which is equivalent to 10 times the current world’s total energy consumption. Biomass energy in my country is also extremely rich. For example, the annual straw volume is about 800 million tons, which is equivalent to about 500 million tons of standard coal. The amount of firewood and forestry waste is also very large. Forestry waste (excluding charcoal forestry) is about 3700m3 per year, which is equivalent to 20 million tons of standard coal.
Biomass combustion is a traditional utilization method, but it has low thermal efficiency, high labor intensity and serious pollution. Through biomass energy conversion technology, biomass energy can be efficiently used to produce various clean fuels, replacing coal, oil and natural gas and other fuels; it can also be used to produce electricity, reduce dependence on fossil energy, protect national energy resources, and reduce energy consumption. Environmental pollution caused by consumption.
Biomass gasification refers to a thermochemical conversion process in which biomass solid raw materials are thermally decomposed or incompletely combusted into biomass gas in an oxygen-free or oxygen-deficient high-temperature environment. In rural areas, biomass gas can be used for cooking or heating in winter; in industry, biomass gas can directly drive industrial boilers to produce steam. The purified biomass gas can also drive the generator set to generate electricity to supply power to areas lacking electricity.
Biomass gasification power generation process
Biomass gasification technology changes the traditional way of directly burning biomass to obtain energy. Through gasification technology, biomass is converted into clean combustible gas, which greatly improves the use range of biomass energy. Biomass gasification technology has the following unique advantages:
Abundance and ubiquity: Biomass is a ubiquitous, ubiquitous and cheap energy source that is easy to obtain and simple to produce.
Renewability: Biomass energy is an ideal renewable energy source. As long as the solar radiation energy exists, the photosynthesis of green plants will not stop, and the biomass energy will never be exhausted.
Environmental protection: Using biomass energy as energy can reduce environmental pollution. Biomass raw materials are mainly agricultural and forestry wastes, which will pollute the environment, breed bacteria, mosquitoes, and produce harmful and odorous gases such as hydrogen sulfide and methane, which not only occupy land resources but also pollute the environment.
Cleanliness: Biomass power generation uses organic substances in plants, and the carbon dioxide emitted by the system will be absorbed by the growth of plants in the next season, so it does not increase the content of carbon dioxide in the atmosphere, and can achieve “zero emissions” of carbon dioxide.
Post time: Jan-20-2022