▎ 摘　　要

NOVELTY - The system has gas preheating device (20) that is connected with gas cooling device and is set for preheating gas cooled by gas cooling device (10) so that the cooled gas reaches a preset temperature. The gas preheating device and material adding device (30) are connected to reaction device, so that gas preheated by gas preheating device and material in material addition device enter the reaction device (40). A material collection device (50) is connected with reaction device and is used to receive the gas-solid mixture, and separate reaction product in gas-solid mixture from gas. The gas recovery device (60) is connected with the material collection device and used to receive the gas separated by the material collection device. The gas recovery device is connected to the gas cooling device used to receive gas in the gas recovery device. USE - System for preparing graphene powder. ADVANTAGE - The preparation system provides a continuous cycle reaction, and has high preparation efficiency and low cost. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of the system for preparing graphene powder. Gas cooling device (10) Gas preheating device (20) Material adding device (30) Reaction device (40) Material collection device (50) Gas recovery device (60)