Production method and production device of nanocarbon

摘要

Using a device for producing nanocarbon, a fluidized bed is formed by supplying a low hydrocarbon and oxygen to a fluid catalyst, and nanocarbon and hydrogen are produced by a decomposition reaction of the low hydrocarbon accompanied by a self-combustion of the low hydrocarbon and the oxygen. The device includes: a fluidized bed reactor for containing the fluid catalyst and for causing the self-combustion thereof while being supplied with the low hydrocarbon and the oxygen; a gas supplying unit connected to the fluidized bed reactor for supplying the low hydrocarbon and the oxygen to the fluidized bed reactor; an exhaust gas path connected to the fluidized bed reactor for exhausting an exhaust gas in the fluidized bed reactor to outside; and a supplying unit connected to the fluidized bed reactor for supplying the fluid catalyst to the fluidized bed reactor.

主权项

1. A method for producing nanocarbon, comprising:
pre-heating a low hydrocarbon and oxygen to a temperature of 400 to 500° C., wherein the low hydrocarbon comprises methane; heating, by an ignition device, a mixed gas of the low hydrocarbon and the oxygen to a decomposition temperature of methane of 600° C. or higher; supplying the mixed gas that has been heated by the ignition device to a fluidized bed reactor comprising a fluid catalyst or a fluid catalyst used in combination with a fluid medium, and make the mixed gas contact with the fluid catalyst or the fluid catalyst used in combination with the fluid medium so as to initiate a self-combustion of the low hydrocarbon and the oxygen at the fluidized bed; and producing nanocarbon and hydrogen by a decomposition reaction of the low hydrocarbon accompanied by the self-combustion of the low hydrocarbon and the oxygen while supplying the mixed gas, wherein the oxygen in the mixed gas is supplied in a ratio of 5 to 25% by volume, wherein an amount of carbon dioxide included in an exhaust gas from the decomposition reaction is 1 to 10% by volume, and an amount of water included in the exhaust gas from the decomposition reaction is 1 to 20% by volume, wherein the ignition device is the only external heat source that causes the heating of the mixed gas to the decomposition temperature of methane prior to catalyst contact and to maintain the decomposition reaction.