▎ 摘　　要

NOVELTY - The apparatus comprises: a supply hopper (21) configured to supply graphite oxide; a supply line (40) of which an end is connected to a lower end of the supply hopper; a reducing atmosphere gas supply unit connected to a side of the supply line; a vertical fluidized bed furnace (11) of which a lower part is connected to an another end of the supply line and configured to reduce the supplied graphite oxide with thermal-expansion; a discharge line of which an end is connected to an upper part of the vertical fluidized bed furnace; and a vibrating type vertical micro filter. USE - The apparatus is useful for preparing a graphene-structured material (claimed), which is useful for a polymer composite material, a filler, a secondary battery, a transistor, a hydrogen gas reservoir, a super capacitor, a top gate and a biosensor. ADVANTAGE - The apparatus economically and continuously prepares the nano-size graphene-structured material, with high thermal conductivity, electric conductivity, strength, specific surface area and flexibility. DETAILED DESCRIPTION - The apparatus comprises: a supply hopper (21) configured to supply graphite oxide; a supply line (40) of which an end is connected to a lower end of the supply hopper; a reducing atmosphere gas supply unit connected to a side of the supply line; a vertical fluidized bed furnace (11) of which a lower part is connected to an another end of the supply line and configured to reduce the supplied graphite oxide with thermal-expansion; a discharge line of which an end is connected to an upper part of the vertical fluidized bed furnace; a vibrating type vertical micro filter connected to an opening portion on a side of the discharge line; a vacuum pump connected to the vertical micro filter; and a collector positioned under the vertical micro filter and connected to another end of the discharge line. The graphite oxide is oxidized under ultrasonication, and has a carbon/oxygen ratio of 1/1-5/1 as an analysis result of an elemental analyzer and a maximum peak in 2 theta of 12-14 degrees according to an X-ray diffraction analysis. The graphene-structured material is a mixture of single-layered graphene and multiple-layered graphene, and includes exfoliated graphite having an average surface area of 200-2600 m2/g. A temperature within the vertical fluidized bed furnace is maintained at 500-1200 degrees C. The atmosphere gas supply unit supplies an inert carrier gas and a reducing gas, and comprises a valve configured to adjust an amount of the inert carrier gas and the reducing gas to be supplied to the supply line. The vertical fluidized bed furnace is provided in a height direction to continuously apply a thermal shock to the graphite oxide vertically rising in the vertical fluidized bed furnace. The discharge line is horizontally connected to the vertical micro filter. DESCRIPTION OF DRAWING(S) - The diagram shows a schematic cross sectional view of an apparatus for preparing a graphene-structured material. Vertical fluidized bed furnace (11) Heater (12) Supply hopper (21) Screw feeder (22) Supply line. (40)