| 摘要 |
PROBLEM TO BE SOLVED: To provide a device for manufacturing carbon in which carbon can be precipitated at a low temperature by using a catalyst containing iron as the main component. SOLUTION: A mixture gas containing carbon dioxide, methane and other carbon sources is made to flow in a preliminary reaction tank 5 filled with a catalyst of 30 wt.% Ni/SiO2 . The gas is converted into a mixture gas of carbon dioxide, methane, hydrogen and carbon monoxide at 550 deg.C reaction temperature by a heating furnace 6. Then the gas is made to flow in a main reaction tank 9 filled with catalyst of 50 wt.% Fe/SiO2 essentially comprising iron to subject the carbon dioxide to the catalytic reduction with hydrogen at a low temperature of 400 deg.C with a heating furnace 6a to precipitate carbon on the surface of the catalyst. |
