A continuous two-stage biomass nitrogen-enriched pyrolysis reaction device

Abstract

The invention discloses a continuous two-stage biomass nitrogen-rich pyrolytic reaction device. The continuous two-stage biomass nitrogen-rich pyrolytic reaction device comprises an auger pre-pyrolysis reactor and a rotary type turbulence pyrolytic reactor, wherein the auger pre-pyrolysis reactor comprises a pre-pyrolysis reaction cylinder, an auger and a feed pipe, and biomass enters the pre-pyrolysis reaction cylinder through a feed pipe, utilizes the pumped-in powdery exogenous nitrogen to achieve pre-pyrolysis under the pushing action of the auger and can be output through a discharge opening at the other end of the pre-pyrolysis reaction cylinder; the rotary type turbulence pyrolytic reactor comprises a pyrolytic reaction cylinder and a turbulence rotor capable of rotating relative to the pyrolytic reaction cylinder, as well as a gaseous exogenous nitrogen lead-in pipe and a high-temperature oxygen-free heat-carrying gas lead-in pipe, and under the atmosphere of the gaseous exogenous nitrogen and the high-temperature oxygen-free heat-carrying gas, counterrotation of the turbulence rotor and the pyrolytic reaction cylinder is utilized to enable full pyrolytic reaction between pre-pyrolysis biomass raw materials and nitrogenous gas so as to realize two-stage pyrolysis to produce multi-phase products. According to the invention, two-stage introduction of the exogenous nitrogen is utilized to manufacture nitrogen-rich oil and nitrogen-rich coke which can be respectively used for synthesizing high-quality chemicals and preparing high-performance super capacitors.

Description

technical field [0001] The invention belongs to the technical field of biomass pyrolysis, and in particular relates to a reaction device for nitrogen-enriched pyrolysis of biomass. Background technique [0002] Biomass pyrolysis technology is to heat biomass to a certain temperature under the condition of no oxygen or oxygen deficiency, so that the macromolecules of biomass are decomposed into smaller molecules, and the thermochemical conversion of coke, bio-oil and gas three-state products is obtained. technology. According to different heating rates, pyrolysis can be divided into slow, fast and flash pyrolysis. The main target product of slow pyrolysis is coke (yield up to 30-40%), the main product of fast pyrolysis is bio-oil (yield up to 40-60%), and the yield of bio-oil in flash pyrolysis can reach up to 80%. By adjusting parameters such as reaction temperature, pressure, reaction atmosphere, residence time, heating rate and material type, the yield and quality of th...

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Problems solved by technology

[0005] In view of the above defects or improvement needs of the prior art, the present invention provides a continuous two-stage biomass nitrogen-enriched pyrolysis reaction device, which introduces exogenous nitrogen through two stages, and reasonably regulates the reaction parameters. The pyrolysis reaction device can realize continuous two-stage nitrogen-rich pyrolysis of biomass, which can solve the problems of low product quality and low conversion efficiency in the current polygeneration process

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