▎ 摘　　要

NOVELTY - Device comprises air inlet unit (1), reaction unit, and exhaust gas recycling unit, where air inlet unit comprises air inlet pipe, gas flow controller assembly and control valve assembly, reaction unit comprises inner wall of the reaction unit is copper pipe which is fixed on the copper tube induction coil, and induction coil is connected with high frequency induction heating equipment. USE - Device used for preparing graphene. ADVANTAGE - The device is cost-effective and eco-friendly, and produces high yield. DETAILED DESCRIPTION - Device comprises air inlet unit (1), reaction unit, and exhaust gas recycling unit, where air inlet unit comprises air inlet pipe, gas flow controller assembly and control valve assembly, reaction unit comprises inner wall of the reaction unit is copper pipe which is fixed on the copper tube induction coil, and induction coil is connected with high frequency induction heating equipment, multiple nickel-chromium-iron alloy pallet (32) and a multiple metal porous plate, where bottom unit and the top unit of the reaction unit are respectively provided with an air inlet and an air outlet. The left side of the reaction unit is provided with an air valve, and connected to the molecular pump and mechanical pump distal end proximal end from the reaction unit. The air outlet of the reaction unit is provided with a molecular pump B, and exhaust gas recycling unit comprises gas separator, gas separator B and exhaust pipe. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of graphene preparing device. Air inlet unit (1) Hydrogen source gas flow controller (2) Mechanical pump (12) Cooler (27) Cooling pipe (31)