The invention discloses a preparation method of a cage shaped
active carbon for
flue gas desulfurization, and belongs to the field of
active carbon synthesis. The preparation method comprises the following steps: taking cheap and easily-available loofah sponges as the
raw material, soaking loofah sponges in a
sodium hydroxide solution, then bleaching loofah sponges by
calcium hypochlorite, carrying out
fermentation,
drying fermented loofah sponges in a quick-cooling and quick-heating mode by using a refrigerator and a high temperature baking oven, subjecting loofah
sponge fibers to a de-
crystallization treatment under the assistance of ball milling so as to improve the reaction activity of loofah
sponge fibers, making loofah
sponge fibers into pulp taken as the
raw material, taking
cyclohexane and trichloromethane as the mixed
oil phase, tween 60 as the emulsifier, and
ammonium persulfate as the initiator, mixing the
raw material, mixed
oil phase, emulsifier, and initiator with a water phase, carrying out reactions under a heating condition to generate cage shaped fibers, and finally carrying out high temperature
carbonization to obtain the cage shaped
active carbon for
flue gas desulfurization. The obtained caged shaped active carbon is a novel active carbon material, there are many holes on the surface of the active carbon, the cavity in the active carbon is large, the fluid mechanic performance is excellent, and the provided active carbon has a wide application prospect in
flue gas desulfurization therefore.