▎ 摘　　要

NOVELTY - The utility model claims a pressure type graphite purifying column, comprising a pressurizing pump, a power supply switch, a power supply line, a pressure control knob, a gas path, a sealing plug, a cylinder, a graphene, filtrate port. the pressurizing pump is connected with the sealing plug through the air path, a sealing plug is above the column, with the column; the graphene layer located below the column body; filtrate port located below the graphene. a power supply switch, a power supply line, pressure control switch located on the pressurizing pump; the gas circuit terminal passes through the sealing plug passes through the middle. The sample amount, the amount of the column can be changed, the amount of graphene in graphene layer can be adjusted. The beneficial effect of the utility model is that it uses large adsorption capacity of graphene to realize rapid extraction of the object, and realizes the control to the pressure in the purification process.