Features Description : The moving bed (tubular cracking furnace) is a device for catalytic cracking hydrocarbons to produce carbon nanotubes using a cyclic batch process. In the production process of mobile method, the catalyst is fixed and moved within the cracking furnace tube of the internal tubular furnace of the carrier, and carbon nanotubes are grown in areas where conditions are met, usually using methane (CH4) as the carbon source.It is possible to prepare various carbon nanotubes using different catalysts and different carbon source gases,and one device is universal.