Method for preparing high-adsorbability activated carbon by using rice hulls as raw material
A high adsorption and activated carbon technology, applied in the direction of solid waste removal, etc., can solve the problems of many sets of activated carbon equipment, high precision requirements, complex technology, etc., and achieve less equipment sets, high relative yield and simple process Effect
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Embodiment 1
[0020] Dry the filter residue, soak it with zinc chloride and potassium chloride co-solution at 70°C for 20 hours, wherein the mass concentration of zinc chloride in the co-solution is 20%, and the mass concentration of potassium chloride is 10%; take out the filter residue and pour Put it into a porcelain crucible, put it into a muffle furnace and activate it at 400°C for 2 hours; wash it with 8% mass concentration of washing liquid hydrochloric acid, filter, wash with water until neutral, dry it at 120°C, and grind it.
Embodiment 2
[0022] Dry the filter residue, soak it with zinc chloride and potassium chloride co-solution at 80°C for 10 hours, wherein the mass concentration of zinc chloride in the co-solution is 60%, and the mass concentration of potassium chloride is 2%; take out the filter residue and pour Put it into a porcelain crucible, put it into a muffle furnace and activate it at 800°C for 1 hour; wash it with a washing liquid with a mass concentration of 12% hydrochloric acid, filter, wash with water until neutral, dry it at 105°C, and grind it.
Embodiment 3
[0024] Dry the filter residue, soak it with zinc chloride and potassium chloride co-solution at 75°C for 15 hours, wherein the mass concentration of zinc chloride in the co-solution is 40%, and the mass concentration of potassium chloride is 5%; take out the filter residue and pour Put it into a porcelain crucible, put it into a muffle furnace and activate it at 600°C for 1.5 hours; wash it with 10% mass concentration of washing liquid hydrochloric acid, filter, wash with water until neutral, dry it at 112°C, and grind it.
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