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Cyclic regeneration of activated carbon in fluidized beds
Author(s) -
Chihara K.,
Suzuki M.,
Smith J. M.
Publication year - 1982
Publication title -
aiche journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.958
H-Index - 167
eISSN - 1547-5905
pISSN - 0001-1541
DOI - 10.1002/aic.690280118
Subject(s) - activated carbon , adsorption , carbon fibers , decomposition , regeneration (biology) , thermal decomposition , fluidized bed , chemistry , chemical engineering , pyrolysis , thermal , materials science , organic chemistry , composite material , thermodynamics , physics , composite number , engineering , biology , microbiology and biotechnology
Cyclic thermal regeneration of powdered activated carbon containing adsorbed sucrose was studied in fluidized beds at 1151° K and 101.3 kPa (1 atm). The regeneration process consists of three steps: (1) drying, (2), thermal decomposition, and (3), gasification of residual carbon with steam. The maximum restoration of adsorption capacity (98.5% recovery after each regeneration) was obtained when gasification removed an amount of carbon equal to the residual adsorbed carbon after thermal decomposition. It was verified that the time required to attain optimum regeneration could be determined from available kinetics data for the steam‐carbon reaction. For our sucrose‐activated carbon system this time was about 180 s at 1151°K.