Production process and technology for high-power microwave pyrolysis of biomass

Abstract

The invention discloses a production process and technology for high-power microwave pyrolysis of biomass. The production process comprises the following steps: feeding a solid biomass material not required to be crushed into a closed and shielded microwave pyrolysis furnace chamber, adjusting the temperature in the microwave pyrolysis furnace chamber to be uniformly risen to enable the biomass material to be pyrolyzed and flue gas to be produced by controlling the feed-in power of microwave and the feed-in time of the microwave, monitoring the pressure in the pyrolysis furnace chamber to control a flue gas extracting system, performing pyrolysis to obtain solid carbon, condensing pyrolyzed flue gas to produce biomass pyrolysis liquid, and purifying the residual combustible gas into cleanbiomass energy. The process and the technology have the advantages that the whole pyrolysis process is performed in a closed system, pyrolysis products are completely recycled and completely utilized,no waste is discharged, cleaning production is realized, large-scale, high-efficiency and continuous industrial production is realized, automation control is adopted for the whole process, a reliableproduction process and technology is provided with the comprehensive industrial application of biomass and can be widely applied to industrial closed heating, pyrolysis and denaturation treatment ofother similar materials.

Description

technical field [0001] The invention relates to a production process and technology of high-power microwave pyrolysis biomass. Background technique [0002] At present, the industrial production devices that are widely used and can continuously pyrolyze biomass are mainly fixed bed, fluidized bed, entrained flow, multi-furnace device, rotary furnace, rotating cone reactor, spiral pyrolysis reactor, etc., such devices Burning biomass or heating biomass through heat conduction from the outside to the inside results in a large loss of heat energy; the pretreatment of biomass raw materials consumes a lot of energy and costs; the system is complex, the equipment is huge, and the production environment is harsh; only biomass can be processed Gasification or liquefaction, single product, poor quality and subsequent utilization rate; the effective utilization rate of biomass resources is greatly reduced, the economic benefits are also reduced, and a large amount of residue is discha...

AI Technical Summary

Problems solved by technology

However, this technical solution is still in the stage of experimental research in small laboratories, and no technical solution has been proposed on how to use high-power microwaves to pyrolyze biomass for industrial production. , Many technical problems in large-scale pyrolysis of biomass, such as: how to feed high-power, high-density microwaves to meet the temperature of 300-1250°C or even higher required for pyrolysis of biomass, and to act evenly and efficiently It is suitable for biomass materials, and effectively avoids damage to the microwave generator; how to ensure that the temperature of the microwave field is actually measured and controlled in the large-space pyrolysis chamber, and the microwave temperature gradient of the pyrolyzed biomass is accurately controlled; how to timely drain the microwave oven chamber Pyrolysis of flue gas, pressure control, effective gas-liquid oil separation and purification, etc., to achieve industrial production has always been the focus and difficulty of comprehensive utilization of biomass resources, and the research on related technologies has just begun

[0004] In addition, the addition of catalysts can easily cause residues and pollution of metal salts or metal oxides in pyrolysis biomass products

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