▎ 摘　　要

NOVELTY - Device comprises valve inlet (1), feeding inlet (2), high pressure vessel (3) with valve drain pipe (4), filter decompression valve (5), water inlet pipe with valve drain pipe, normal pressure container and a heating furnace. The high pressure container is provided with a feeding port. The high pressure container part is connected with the valve inlet. The high-pressure container is mounted with a heating furnace. The liquid discharging pipe is connected with the top of normal pressure container which is set with filter decompressing valve. USE - Device for producing graphene material (claimed). ADVANTAGE - The device has a simple technique, convenient operation, fast and low-cost preparation of graphene. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for preparing graphene material which involves: (A) adding the graphite powder in a high pressure container; (B) charging inert gases in the high pressure vessel; (C) uniformly heating the high pressure container; (D) controlling temperature evenly increased to 200-1600 degrees C for 30-60 minutes; (E) filling inert gas in the flake graphite; (F) peeling off the graphite flake to form a single layer of graphene material; (G) releasing the pressure of the high pressure vessel to make it normal; and (H) cooling by spraying water to obtain graphene material. DESCRIPTION OF DRAWING(S) - The drawing shows schematic view of device. Valve inlet (1) Feeding inlet (2) High pressure vessel (3) Valve drain pipe (4) Filter decompression valve (5)