Revolving-scraper type biomass pyrolysis reactor

Abstract

The invention discloses a revolving-scraper type biomass pyrolysis reactor, which belongs to the field of biomass pyrolysis equipment. The revolving-scraper type biomass pyrolysis reactor comprises a heating cylinder, a revolving drum, a temperature control instrument, a dynamic seal, a bearing, a spray header, a hopper, a charging threaded rod, a charging motor, a circulating pump, a recirculated cooling liquid pipeline and an oil-water collecting cylinder, wherein the revolving drum is composed of a revolving shaft, a revolving-shaft through hole, a through hole of an external cylinder of the revolving drum, a revolving scraper, heat insulation cotton, a fixed wing and the external cylinder of the revolving drum. By using the reactor disclosed by the invention, the integration of a pyrolysis device, a cyclone separation device and a scrubbing-condensing device is truly realized; just through changing the preset temperature of the temperature control instrument and the revolving speeds of a revolving drum speed regulating motor and a charging speed regulating motor, the productivities of three products comprising biological oil, combustible gas and biomass carbon can be adjusted; and compared with the existing biomass pyrolysis reactor, the pyrolysis temperature is reduced by 100-150 DEG C.

Description

technical field [0001] The invention relates to biomass pyrolysis equipment, in particular to a rotary scraper type biomass pyrolysis reactor capable of integrating the functions of pyrolysis, cyclone separation and washing and condensation at a relatively low pyrolysis temperature. Background technique [0002] Biomass pyrolysis technology is the most promising biomass energy conversion technology in the 21st century, and the biomass pyrolysis reactor is the key equipment in biomass pyrolysis technology. Biomass pyrolysis refers to the chemical decomposition process in which biomass macromolecules are degraded by heating in the absence of oxygen or oxygen, and finally bio-oil, combustible gas and biomass charcoal are produced. It is also called dry distillation in industry. . In recent years, due to the increasing shortage of conventional energy sources, the research on biomass pyrolysis technology has been highly valued at home and abroad. [0003] At present, the common...

AI Technical Summary

Problems solved by technology

They all have their own characteristics, and their common defect is that the thermal cracking temperature is relatively high, and the thermal cracking reactor, cyclone separator and washing condenser are all three independent devices, which have large volume, large floor space, and high heat loss. Large, expensive, long process, and prone to secondary thermal cracking, thereby reducing the yield of bio-oil, etc.

[0004] The patent document of Chinese patent application number 200820220847 discloses a reaction equipment for biomass cracking. The name of the invention is a biomass fast cracking reactor, which can effectively solve the complex process, low production efficiency and high cost of existing reactors. The solution to this problem is that the lower part of the solid material storage tank has a material outlet, and the upper part is equipped with a connected gas-solid separation and settling chamber. The gas separation and settling chamber has a cracking reaction tube extending out of the gas separation and settling chamber. There is a gray baffle, the heating furnace passes through the cracking reaction tube and is installed above the gas-solid separation settling chamber, there is a screw feeder on one side of the cracking reaction tube, and the overflow weir passes through the ash baffle and is installed on the upper end of the gas separation and settling chamber. A cyclone separator is installed on one side of the gas separation settling chamber, and there is an outlet on the cyclone separator

The disadvantage of this invention is that the device can only complete the first two of the three processes of biomass thermal cracking, cyclone separation, and washing and condensation, and cannot complete the process of washing and condensation, and the yield is low, so it needs to be processed at a higher Only work under heating

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