METHOD AND DEVICE FOR PREPARING CARBON NANOTUBES AND HYDROGEN

A method capable of continuously producing carbon nanotubes and hydrogen. The method comprises: preparing a catalyst precursor, and pre-reducing the catalyst precursor; adding a certain height of carbon nanotubes in a reactor as a stacked bed in advance, and electrically heating the carbon nanotubes to the reaction temperature of a vapor deposition furnace in the presence of a protective gas; putting the pre-reduced catalyst or unreduced catalyst precursor into the reactor; under the condition of stirring the solid materials in the reactor, introducing a carbon source gas into the reactor, reacting same by means of the vapor deposition furnace to generate new carbon nanotubes and hydrogen, continuously discharging a part of carbon nanotubes and a part of hydrogen, and repeating the described steps to achieve the continuous preparation of carbon nanotubes. A device for the method. The device has the advantages of a simple structure, low costs, easy operation, and a high utilization rate of raw materials, can manufacture a large batch of carbon nanotubes with a high purity at one time, and is suitable for large-scale industrial production.