Device and method for preparing biological oil, activated carbon and combustible gas by use of biomass poly-generation

Abstract

The invention discloses a device and a method for preparing biological oil, activated carbon and combustible gas by use of biomass poly-generation. The method comprises: carrying out microwave pyrolysis on biomass by use of a horizontal rate furnace microwave pyrolysis device, and filtering and condensing the obtained gas phase product to obtain the biological oil and the combustible gas. After being heated by heat exchange with high temperature activated carbon, air is used for drying a raw material. In the device, microwave radiation heating and horizontal rate furnace delivery are adopted, the raw material does not need to be crushed to fine granules, no carrier gas is needed in the pyrolysis process, the yield of the combustible gas can be improved to achieve a poly-generation effect, and biochar granules are avoided of entering the pyrolysis gas, so that the quality of the biological oil is improved.

Description

technical field [0001] The invention relates to the field of utilization of biomass resources, in particular to a device for preparing bio-oil, activated carbon and combustible gas through polygeneration of biomass. Background technique [0002] With the development of society and economy, human beings consume more and more energy, resulting in the depletion of fossil resources. More than 85% of my country's energy structure is fossil energy such as coal, oil, and natural gas. On the one hand, the extensive use of fossil energy has caused serious environmental pollution problems, such as the greenhouse effect, acid rain, smog, etc.; on the other hand, my country's annual A large amount of oil and natural gas needs to be imported, which not only costs a lot of foreign exchange, but also poses hidden dangers in energy security. New energy can alleviate the tense situation of energy supply, and can also realize CO 2 Zero emissions of greenhouse gases, thereby reducing the incr...

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Problems solved by technology

However, the traditional biomass pyrolysis method has many disadvantages. For example, it is difficult to directly heat the inside of the raw material. The traditional heating method can only heat the raw material from the surface to the inside. The uneven heating of the raw material affects the quality of the final product. Yield and quality, if the raw material is evenly heated inside and outside, the pyrolysis process can be significantly improved and the technical level can be improved; most of the current processes need to crush the raw material before pyrolysis, breaking the large material into fine Particles, and as the particle size of the broken particles decreases, the processing cost also increases sharply, resulting in an increase in production costs. If the pyrolysis process without crushing pretreatment can be realized, the production cost can be reduced; in addition, most of the current thermal The pyrolysis devices of the pyrolysis process all need carrier gas to realize bed material fluidization and rapid heating, but the existence of carrier gas will increase the energy consumption of heating and cooling on the one hand, and on the other hand, because the carrier gas will entrain carbon particles into the product, reducing quality of bio-oil

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