▎ 摘　　要

NOVELTY - Multi-tube device comprises a hearth structure. A set of heating rods are longitudinally arranged in the hearth structure. The heating rod is arranged in multiple heating areas. A corundum tube penetrates through multiple groups of heating rods, and changes from high to low along with the heating interval. The graphene is deposited in the corundum tube. A collecting box is fixed on one side of a hearth structure which is fixed with a collecting box body. The collecting box collects the graphene. USE - Multi-tube device for preparing graphene. ADVANTAGE - The device reduces preparation time is short, has high efficiency of the preparation of graphene device, avoids the graphene preparation device in present stage which cannot satisfy the requirement, the depositing of graphene of the carbon nano-tube in the corundum tube and coating process for graphene and ensures that the collecting box body collects graphene through a fast bin gate. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for controlling multi-tube device for preparing graphene. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of the multi-tube device.