Biomass non-phase change drying coupling downer pyrolysis system

Abstract

The invention relates to a biomass treatment system, in particular to a biomass non-phase-change drying coupling downer pyrolysis system which comprises a non-phase-change drying treatment device and a downer pyrolysis treatment device, the non-phase-change drying treatment device comprises a non-phase-change dryer, the downer pyrolysis treatment device comprises a downer pyrolysis regenerator, the system further comprises a gas heat exchanger, an air supply device and a gas mixer, the downer pyrolysis regenerator is connected with the gas heat exchanger, the gas heat exchanger is connected with the air supply device, the gas heat exchanger and the air supply device are connected with the gas mixer, and the gas mixer is connected with the non-phase-change dryer. The non-phase-change drying treatment device and the downer pyrolysis treatment device are coupled together, air is changed into hot carrier gas required by a non-phase-change dryer through high-temperature flue gas generated by combustion of non-condensable gas, waste heat of the high-temperature flue gas is effectively utilized, the resource utilization rate is increased, and the whole biomass treatment cost is reduced.

Description

technical field [0001] The invention relates to a biomass treatment system, in particular to a biomass non-phase-change drying coupled descending bed pyrolysis system. Background technique [0002] The annual output of global biomass resources reaches 170 billion tons, and the reserves are abundant. The output of non-grain waste biomass is also considerable. For example, the annual output of global straw is about 3 billion tons, and the annual output of straw in my country is as high as 700 million tons. The unreasonable disposal of these agricultural biomass, such as disposal and incineration, not only causes waste of resources, but also brings about increasingly serious environmental problems such as air pollution. [0003] Rapid pyrolysis of biomass to produce bio-oil is an efficient and clean biomass treatment and utilization technology. The biomass pyrolysis treatment system mainly includes a biomass drying treatment device and a down-bed pyrolysis treatment device, th...

AI Technical Summary

Problems solved by technology

[0006] The combustion of non-condensable gases in the down-bed pyrolysis regenerator will produce high-temperature flue gas, the temperature of which is about 400°C. At present, the high-temperature flue gas generated is directly discharged to the outside for treatment without utilizing the remaining heat, resulting in waste of resources. Waste, also increases the cost of biomass treatment

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