▎ 摘　　要

NOVELTY - A reaction device for preparing graphene by biomass, comprising a sealing pipeline, wherein the sealing pipeline is a ring pipe structure; the inner part is provided with a reaction chamber; the reaction chamber comprises two electrodes set in the sealing pipeline and a sample tank located between the two electrodes; the sample tank is used for containing biomass; the electrode is used for heating the biomass in the sample pool; the pipe wall of the sealing pipe is connected with a three-way pipe; the three-way pipe is equipped with three valves; the three valves are used for controlling the sealing pipe to vacuumize or introduce inert gas; the sealing pipeline is provided with a gas conveying pump; the gas conveying pump is used for circulating inert gas; the sealing pipeline is further provided with a detachable active carbon filter screen for absorbing harmful substances. The utility model under the inert atmosphere, through the electric arc generated between the two electrodes, instantaneously heating the biomass, which greatly accelerates the process of preparing graphene.