Cone mill roll biomass rapid catalytic pyrolysis reactor and pyrolysis method thereof

Abstract

The invention relates to a cone mill roll biomass rapid catalytic pyrolysis reactor and a pyrolysis method thereof. The pyrolysis reactor comprises a gas outlet, a feed inlet, a discharge hole, a conemill roll, a friction wall, a smoke flue, a closed shell, a carbon collection box and a sealing filler, wherein the cone mill roll consists of a cone roll body, a catalysis groove, a friction belt and a rotating shaft. Pretreated biomass particles suffer from the heating of the friction wall, and the surfaces of the pretreated biomass particles are rapidly warmed for a pyrolytic reaction; simultaneously, under the pushing extrusion of the friction belt, the materials suffer from the friction shearing action of the cone mill roll and the friction wall, the catalyst and heat can be sufficientlyfed into the interiors of the particles through surface residual carbon generated after the materials are constantly peeled and pyrolyzed, and efficient catalytic reaction is guaranteed; pyrolysis gas is rapidly condensed after gas-solid separation so as to obtain high-grade bio-oil fuel or bio-oil rich in specific high value-added products; and moreover, combustible gas and coke are colleted, high temperature flue gas is generated after combustion and is used for heating the shell, and a self-heating type pyrolysis process is realized.

Description

technical field [0001] The invention belongs to the technical field of biomass energy utilization, and in particular relates to a conical grinding roller type biomass rapid catalytic pyrolysis reactor and a pyrolysis method thereof. Background technique [0002] As the only renewable energy that can be directly converted into liquid fuels, biomass has attracted worldwide attention due to its advantages such as huge output, storability and carbon cycle. Converting a large amount of garbage and agricultural and forestry waste generated every year into bio-oil through rapid pyrolysis technology is equivalent to adding tens of millions of tons of oil equivalent energy each year, which can significantly improve my country's energy security and effectively reduce pollutants and greenhouse gas emissions. At the same time, through directional regulation of the biomass pyrolysis process (such as using catalysts for catalytic pyrolysis of biomass), the grade of bio-oil can be improved...

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Problems solved by technology

However, for the current mainstream pyrolysis reactors: moving mechanical structures, such as rotating cones, ablation types, etc., it is difficult to make the catalyst penetrate into the particle to directly catalyze the pyrolysis reaction only by relying on centrifugal force, and the effect of catalyzing the pyrolysis product is not It is not as good as a direct catalytic reaction; for the pressure roller structure, the raw material particles also become compact during the rolling process, and it is also difficult to ensure the catalytic effect of the catalyst on the inside of the particles; and the fluidized bed type, through the violent Collision can continuously peel off the residual char on the surface of the raw material while ensuring high-efficiency heat transfer, so that the catalytic effect continues to penetrate deep into the raw material, but correspondingly, the large amount of carrier gas used leads to difficulty in condensing the pyrolysis gas and a large loss of condensation heat And problems such as serious wear and tear of the reactor and huge equipment also limit the development of the fluidized bed reactor

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