Self-cleaning fluidized bed reactor for carbon nanotube production

Abstract

The invention relates to the technical field of a nanometer material and provides a self-cleaning fluidized bed reactor for carbon nanotube production. The self-cleaning fluidized bed reactor comprises a fluidized bed reactor body with a reaction chamber and a rotating device arranged in the reaction chamber, wherein the rotating device comprises a rotating shaft and a rotator; the rotating shaft is longitudinally arranged along the center of the reaction chamber; the rotator is connected with the rotating shaft and is rotated under the driving of the rotating shaft; the reaction chamber is provided with a flow inlet and a flow outlet; the gas flows in through the flow inlet and flows out through the flow outlet; the rotating shaft is communicated with the flow inlet; the rotator is communicated with the rotating shaft; a plurality of gas holes are formed on the rotator; the gas holes are opposite to the inner wall of the reaction chamber and are communicated with the rotating shaft; gas flows out through the gas holes. In the self-cleaning fluidized bed reactor for carbon nanotube production, the rotator is rotated under the driving of the back-flushing acting force of the gas flow; when the rotator is rotated, the catalyst and the carbon nanotube adhered to the inner wall of the reaction chamber are cleaned by the rotator; the inner wall of the reaction chamber is washed by the gas sprayed from the gas holes; the carbon nanotube is prevented from being locally accumulated on the inner wall of the reaction chamber and accordingly causing the reduction of effective volume in the fluidized bed.

Description

technical field [0001] The invention relates to the technical field of nanometer materials, and more specifically relates to a self-cleaning fluidized bed reactor for producing carbon nanotubes. Background technique [0002] As an emerging one-dimensional nanomaterial with excellent properties, carbon nanotubes are widely used in various aspects such as conductive media, composite materials, field emission, and energy storage materials for secondary lithium-ion batteries. The fluidized bed reactor is used in the large-scale production of carbon nanotubes. Its excellent heat transfer and mass transfer process make the catalyst fully contact with the raw material gas, and the reaction can obtain carbon nanotubes with excellent performance. [0003] Since carbon nanotubes are one-dimensional nanomaterials with a hollow structure, and have the characteristics of low volume density, large specific surface area, and high aspect ratio, carbon nanotubes are easily entangled with eac...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a kind of self-cleaning fluidized bed reactor that is used for the production of carbon nanotubes, aims to solve the problem that carbon nanotubes are easily deposited on the inner wall of the fluidized bed reactor in the production of carbon nanotubes in the prior art, which affects the Problems of heat transfer and mass transfer in the reactor

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