Biomass liquefying method adopting fluidized pyrolysis and matched device thereof

Abstract

The invention discloses a biomass liquefying method adopting fluidized pyrolysis and a matched device thereof, and belongs to the technical field of energy. The method comprises the steps as follows: biomass powder is fed into a fluidized bed pyrolysis furnace and is sufficiently burned with air as a fluidization medium, and the temperature of the fluidized bed pyrolysis furnace is increased to 600 DEG C-650 DEG C; the feeding quantity of the biomass powder is increased to enable the fluidized bed pyrolysis furnace to operate continuously, and produced powdered carbon, bio-oil and flammable gas are separated and collected simultaneously during operation; a flammable gas burner is started after a gas storage tank is full of the flammable gas, high-temperature flue gas generated through burning of the flammable gas is taken as the fluidization medium, and air supply is stopped simultaneously; air supply is started after the flammable gas in the gas storage tank is used up, biomass feeding is stopped simultaneously, and powdered carbon is fed; the powdered carbon is burned continuously until the temperature in the fluidized bed pyrolysis furnace is increased to 600 DEG C-650 DEG C, biomass powder is fed instead at the moment, and a next workflow is started. According to the biomass liquefying method adopting fluidized pyrolysis and the matched device thereof, secondary pollution is avoided, energy is saved, equipment investment is small, the production cost is reduced, and the thermal conversion rate of the biomass is increased.

Description

technical field [0001] The invention belongs to the field of energy technology, and specifically relates to a biomass fluidization pyrolysis liquefaction method, and also relates to a supporting device of the method. Background technique [0002] Energy is the basis for the survival and development of modern society. At present, more than 85% of my country's energy structure is non-renewable fossil fuels such as coal, oil, and natural gas. These fossil fuels are not only increasingly scarce, but also cause serious pollution to the environment in the cycle from mining to utilization. Recycled clean energy has become a matter of great concern to all countries in the world. Biomass (including various agricultural wastes, wastes from forestry and wood processing industries, aquatic plants and various organic wastes, etc.) is the raw material of renewable clean energy produced through photosynthesis. Biomass energy technology mainly includes gasification, combustion power genera...

AI Technical Summary

Problems solved by technology

The deficiencies in the existing technology are: high-quality energy is consumed to heat the intermediate heat carrier, which makes the liquefaction cost higher and is not conducive to industrialization; the use of nitrogen as the carrier gas increases the cost; if the used heat carrier is not handled properly, it is easy to The environment causes secondary pollution

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