▎ 摘　　要

NOVELTY - The utility model claims a system for preparing sulphur doped graphene, the system comprising: a pyrolysis device, said pyrolysis device, pyrolysis oil with high sulfur coal inlet outlet and sulfur-containing coke outlet, gasification cracking device the gasification cracking device comprises cracking sulfur-containing coke inlet and gas outlet, said semi-coke inlet with sulphur and the sulphur-containing coke outlet; a high-temperature deposition reactor, the deposition reactor with high temperature reducing protective gas inlet, a pyrolysis gas inlet, a cooling air outlet and a sulphur doped graphene outlet. the pyrolysis gas inlet connected with the pyrolysis gas outlet, and the high temperature deposition reactor is arranged with a copper substrate. The system uses the high-sulphur coal as precursor to prepare sulphur doped graphene, which not only can reduce the preparation cost of the graphene, and the obtained sulphur doped graphene surface is smooth, and it is used for preparing electrode of solar battery, it can obviously improve the solar battery capacity.