▎ 摘　　要

NOVELTY - Preparing graphene by ultrasonic continuous process comprises e.g. immersing physical foaming agent in graphite layer under the action of high pressure and low temperature, and cracking foaming agent under heating condition, and ultrasonic foaming in continuous ultrasonic device to obtain graphene, (i) adding physical foaming agent pumped into reaction tube, (ii) dipping physical foaming agent of graphite into reaction tube, (iii) entering stripped graphene into classifier, dispersing mixed surfactant and storing in classification process, where reaction tube is two-stage reaction tube. USE - The method is useful for preparing graphene by ultrasonic continuous process (claimed). ADVANTAGE - The method improves yield and reduces production cost; and is simple and suitable for large-scale continuous production, and product is environmentally friendly. DETAILED DESCRIPTION - Preparing graphene by ultrasonic continuous process comprises immersing physical foaming agent in graphite layer under the action of high pressure and low temperature, and cracking foaming agent under heating condition, and ultrasonic foaming in continuous ultrasonic device to obtain graphene, (i) open booster pump, adding physical foaming agent pumped into reaction tube under high pressure low temperature section, open the feed device, introducing graphite material into reaction tube under high pressure low temperature section, immersing physical foaming agent in graphite layer gap, (ii) dipping physical foaming agent of graphite into reaction tube under high pressure section at low temperature under the action of screw into high temperature and low pressure area, rapid expanding graphite layer gap in high temperature, making graphite gap spacing larger, decreasing Vander Waals force, continuous stripping of graphene by ultrasonic apparatus and recycling gas, (iii) entering stripped graphene into classifier, dispersing mixed surfactant and storing in classification process, where reaction tube is two-stage reaction tube, where one section is high-pressure low-temperature section, and other section is high temperature and low pressure section, arranging pressure regulating device at both ends of high pressure section and low pressure section, controlling the pressure value of two sections, set tube screw propeller, high temperature and low pressure section of the outer wall of the installation heating devices, arranging ultrasonic device at end of high temperature and low pressure reaction tube and tube built-in supersonic bar.