METHOD FOR PREPARING HIGH SPECIFIC SURFACE AREA ACTIVATED CARBON THROUGH RAPID ACTIVATION UNDER FLUIDIZATION

摘要

A method for preparing high specific surface area activated carbon through rapid activation, comprises the following steps: 1) selecting biomass raw material with a particle size of 0.3-0.9 mm; immersing the biomass raw material in a chemical reagent for 3-6 hours; and drying the biomass raw material in a constant-temperature drying oven of 100° C.-150° C. after immersing is ended; 2) stirring or crushing the dried material to form granular material after drying is completed; and 3) adopting a fluidized bed or a spouted bed as an activation reactor; increasing the temperature of the activation reactor to 700-800° C.; introducing fluidized gas; placing quartz sand; placing the granular material obtained in step 2); activating for 1-10 min; immediately discharging the material after activation is ended; and washing the material with water until the material is neutral to obtain activated carbon with a specific surface area of 1267-1359 m²/g.