▎ 摘　　要

NOVELTY - The reaction device comprises a crucible (3), a crucible cover (4), a first aeration pipe (7), a bubbling device (12) and second ventilation component. The crucible covers cooperate with the crucible. The first air outlet pipe, the bubble device, and the second ventilation assembly extend into the crucible cavity of the crucible. The bubbling equipment is located at the bottom of the cavity. The second ventilation equipment is arranged above the bubbled device. The auxiliary ventilation inner cavity (9) is provided above the second ventilation component. USE - Reaction device for growing of graphene used in technical field of carbon material. ADVANTAGE - The reaction device can improve the yield and quality of graphene. The carbon-containing bubbles react under the heating action of the liquid metal matrix, generating graphene, and the generated graphene rises to the surface of the metal matrix along with the carbon-containing bubbles, and enters graphene the collecting device along with air flow. The graphene is prepared by the preparation method of the graphene based on the technical solution, the application has the beneficial effects of the first vent pipe is set in the auxiliary vent cavity of the second vent assembly to isolate from the metal contact between the first and second vent pipes, and it is set above the bubbling device and the second ventilation component, and the graphene is easily collected by the graphene collecting device. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a preparation method for graphene. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of the reaction device. 3Crucible 4Crucible cover 7First vent pipe 9Auxiliary ventilation inner cavity 12Bubbling device