Low-energy-consumption preparation method of pitch-based spherical active carbon

The invention discloses a low-energy-consumption preparation method of pitch-based spherical active carbon, belonging to the technical field of spherical active carbon. The preparation method comprises the main steps of: mixing benzoyl peroxide, divinylbenzene, styrene, diethylbenzene and pitch powder with a softening point of 240-280 DEG C and the grain size of 150-200 meshes; and suspending in a polyvinyl alcohol dispersion liquid to form balls, curing the balls by using a hydrothermal method to form original carbon balls, calcining original carbon balls in a segmental manner and activating to obtain the pitch-based spherical active carbon. The low-energy-consumption preparation method of the pitch-based spherical active carbon, disclosed by the invention, has the advantages and benefits of fast curing speed, low needed temperature, low energy consumption and saved production time as the benzoyl peroxide, divinylbenzene and styrene are adopted as curing agents for curing the pitch. The pitch-based spherical active carbon prepared by the method has the specific surface area of 650-1200 sq.m./g and the grain size of 300-800 microns and has good sphericity.