Method for preparing high specific surface area activated carbon through rapid activation under fluidization
US10662064B2 · kind B2 · utility
Inventors
Key dates
| Filing date | Aug 24, 2018 |
| Grant date | May 26, 2020 |
| Priority date | — |
| Expiry date | Oct 19, 2038 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01P2006/12
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.