Preparation method of zinc-based pore-forming shell charcoal absorbing material

The invention discloses a preparation method of a zinc-based pore-forming shell charcoal adsorbing material. Sinkiang walnut shell is utilized as a basic material, and zinc chloride solution is utilized as an activating agent; adsorption and saturation are performed on the walnut shell through an impregnation method; the walnut shell is prepared into a novel adsorbing agent according to the certain mass fraction, the certain impregnation ratio, a carbonized temperature and certain carbonized time in an adsorption process. Compared with ordinary shell charcoal, the zinc-based pore-forming shell charcoal adsorbing material is combined with the swelling, catalytic dehydration and pore-forming functions of zinc chloride to the raw material; the micropore amount of the raw material is increased, and the specific surface area is enlarged; the walnut charcoal has the advantages of being high in removal rate and large in adsorption quantity. The cost is greatly reduced because of degradation and recycling of the abso