Waste-free resource circulating utilization process and system based on biomass pyrolysis carbonization

Abstract

The invention discloses a waste-free resource circulating utilization process and system based on biomass pyrolysis carbonization. According to the invention, an agriculture and forestry solid waste biomass material is subjected to crushing, carbonization treatment and cooling and is converted into a biomass carbon base; high-temperature flue gas generated in the carbonization treatment process isrecycled through a waste heat boiler, and flue gas emission operation is conducted after the temperature of the flue gas is reduced; and saturated steam generated by the waste heat boiler is recycledby a user. The circulating system comprises a biomass material storage bin, a conveying device, a biomass material crusher, a conveying device and a carbonization all-in-one machine which are connected, wherein the carbonization all-in-one machine is connected with a carbon base conveying device, and a jacket type carbon cooling device is arranged outside the carbon base conveying device; a smokeoutlet of the carbonization all-in-one machine is connected with a waste heat boiler, and the waste heat boiler is connected with a water treatment device; and the water treatment device is connectedwith the cooling device, and the cooling device is connected with the waste heat boiler. According to the invention, the heat release of smoke to air can be effectively reduced, the utilization rateof biomass energy is improved, and the after-combustion phenomenon in the carbon base production process is eliminated.

Description

technical field [0001] The invention relates to a biomass treatment equipment for agricultural and forestry solid waste, in particular to a waste-free resource recycling process and system based on biomass pyrolysis and carbonization. Background technique [0002] Agricultural and forestry solid waste refers to straw, chaff, shrub branches, dead leaves, veneer, sawdust, wood shavings, and fruit residues discharged from the food processing industry produced during the growth, harvesting, and processing of agricultural and forestry crops. At present, the common treatment methods for agricultural and forestry solid waste can be divided into: landfill, incineration, papermaking, feed, pressing board, biomass pellets, biomass power generation, etc. The above treatment has low utilization rate and large pollution, and has been gradually replaced by new technologies. replace. In order to improve the efficiency of carbonization treatment of agricultural and forestry solid waste bio...

AI Technical Summary

Problems solved by technology

At present, the common treatment methods for agricultural and forestry solid waste can be divided into: landfill, incineration, papermaking, feed, pressing board, biomass pellets, biomass power generation, etc. The above treatment has low utilization rate and large pollution, and has been gradually replaced by new technologies. replace

In order to improve the efficiency of carbonization treatment of agricultural and forestry solid waste biomass materials, multi-tube carbonization integrated machines that use pyrolysis carbonization for carbonization have begun to appear on the market to process biomass materials. However, the flue gas generated by multi-tube carbonization integrated machines is as high as 1000- 1800°C, at present, the method of directly discharging high-temperature flue gas is used for treatment. Although the pollutant content in the generated flue gas is lower than the direct emission standard, it can be directly discharged into the atmosphere, but this will not only cause thermal pollution in the air, It will also cause waste of biomass energy; and the surface temperature of the carbon base is too high when it is produced from the carbonization machine, and the carbon may re-ignite when it encounters the outside air, which will affect the quality of the carbon.

Therefore, there are problems in the existing technology that the flue gas will cause heat release to the air, waste biomass energy, and easily re-ignition in the carbon-based production process.

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