▎ 摘　　要

NOVELTY - The method involves after coal tar gasification, sending into catalytic pyrolysis furnace with argon gas or helium gas, at the same time, adding nano metal or metal oxide as catalyst in the pyrolysis furnace. The gaseous coal tar and catalyst are mixed and reacted to generate carbide precursor. The carbide precursor and hydrogen are introduced into magnetic driving sliding arc plasma discharge device, and high density nonthermal sliding arc plasma is generated by the auxiliary magnetic field. Under the action of high density non-thermal sliding arc plasma, the precursor is converted to generate graphene. USE - Method for continuous preparation of graphene by magnetically-driven sliding arc plasma high voltage discharge. ADVANTAGE - The method has low cost, simple device, without condensing, it can realize the conversion of coal tar to high added value product graphite. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for system for continuous preparation of graphene. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of device of a method of magnetically-driven sliding arc plasma high voltage discharge. 1Inert gas tank 2-1Gasification tank I 2-2Gasification tank II 4-1Catalytic pyrolysis furnace I 4-2Catalytic pyrolysis furnace II 5Hydrogen tank 8Direct current high frequency high voltage power supply 9Cyclone separating device 10Product collecting port 11Draught fan 12Gas collecting tank