▎ 摘　　要

NOVELTY - Preparing large-scale clean graphene comprises e.g. (i) taking 10-25 pts. wt. graphite raw material, 50-60 pts. wt. water, 1.5-15 pts. wt. foaming agent, 1.5-5 pts. wt. surfactant to prepare disperse suspension, stirring at 300-500 revolutions/minute and dispersing for 10-25 minutes, adding graphite material in solvent and dispersing uniformly, to obtain dispersant suspension, (ii) taking turbid solution, adding with dispersant in a spraying device via feeding port connected with feedstock conveying chamber, and entering into the output material room from the feedstock. USE - The method is useful for preparing large-scale clean graphene (claimed). ADVANTAGE - The method can achieve continuous production of graphene, is environmentally friendly, retains layer structure of graphite, does not destroy surface electrical topology symmetry of graphite, and further guarantees quality of graphene finished product. DETAILED DESCRIPTION - Preparing large-scale clean graphene comprises (i) taking 10-25 pts. wt. graphite raw material, 50-60 pts. wt. water, 1.5-15 pts. wt. foaming agent, 1.5-5 pts. wt. surfactant to prepare disperse suspension, stirring at 300-500 revolutions/minute and dispersing for 10-25 minutes, adding graphite material in solvent and dispersing uniformly, to obtain dispersant suspension, (ii) taking turbid solution, adding with dispersant in a spraying device via feeding port connected with feedstock conveying chamber, at least one of ultrasonic probe is set with internal in the output material room, set up beyond the sound power is 100-500 KW, after entering into the output material room from the feedstock dispersing the suspending solution, dispersing suspension through ultrasonic treatment, make foaming agent enter into graphite layer, graphite layer reducing force, at least one of air compressor is set with internal in the output material room, by the air compressor to disperse suspension, sispersing suspension accelerate forward flow, the material conveying chamber and drying chamber mutually connected, dispersing the suspension after ultrasonic processing in the output material room, and (iii) flow entering into the drying chamber is set with gas nozzle add in the drying chamber top, keeping pressure for 0.1-0.5 MPa, cavity temperature is 100-150 degrees C, heating gas temperature is 200-400 degrees C, the drying chamber top end is set with at least one of nozzle, by dispersing suspending liquid through the nozzle, entering into the drying chamber after heating by gas atomization, foaming agent heating decomposing releasing out gas, graphite layer from increasing, through atomizing, graphite at high speed air flow under fast by peeling off, obtaining graphene.