A continuous vertical reaction furnace for producing carbon nanotubes with pre-set catalysts

Abstract

A continuous vertical reaction furnace for producing carbon nanotubes with pre-set catalysts, including a heating furnace, a reaction chamber, a collection chamber, a carbon nanotube growth plate, a growth plate support column, a growth plate push rod, a pneumatic push rod valve, etc., the reaction chamber Located in the heating furnace, the carbon nanotube growth plate is located in the middle of the reaction chamber; the carbon nanotube growth plate is hinged to the growth plate support column, and the growth plate support column is vertically fixed at the center of the bottom plate of the collection chamber; one end of the growth plate movement push rod is connected to the carbon The nanotube growth plate is hinged, and the other end is hinged with a pneumatic push rod valve. The invention can realize non-interrupted production of carbon nanotubes, and can effectively and fully exert the catalytic efficiency of the catalyst in the process of depositing carbon nanotubes. By utilizing the exhaust gas of deposited carbon nanotubes, the energy consumption per unit weight of carbon nanotubes can be reduced, the production cost of carbon nanotubes can be reduced, and the equipment structure is simpler.

Description

technical field [0001] The invention belongs to the field of chemical vapor deposition process equipment manufacturing, and relates to nanometer material manufacturing equipment. Background technique [0002] Carbon nanotubes are a new one-dimensional nanocrystalline material with many excellent properties. Some new fields have been developed in commercial applications, and they have begun to replace carbon black and graphite in many traditional application fields, and have become additive products designated by downstream manufacturers. . [0003] Catalyst chemical vapor deposition process is the main method for industrial mass production of carbon nanotubes. The main process features of the pre-catalyst chemical vapor deposition process associated with the present invention are: 1. Carbon source gas is used as the carbon source for the growth of carbon nanotubes. 2. The reaction chamber is at high temperature and lacks oxygen, providing a carbon source gas cracking envir...

AI Technical Summary

Problems solved by technology

[0005] The main disadvantages of producing carbon nanotubes in a horizontal intermittent chemical vapor deposition furnace are: 1. When workers operate continuously, they need to open the furnace door to take out the product and place a new catalyst at the same time, so the working conditions are difficult; 2. The production efficiency is low

It takes useless time to open the furnace door, take out the product, and place a new catalyst. After closing the furnace door, the furnace gas must be exhausted again, which consumes the effective growth time of carbon nanotubes and reduces production efficiency.

3. The power cannot be turned off during the interval between the production of carbon nanotubes, so the energy consumption of the production of carbon nanotubes is increased

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