Preparation and adsorption of activated coke made from low rank coal
MIAO Wenhua
WU Peng
TENG Jilin
Abstract：In order to solve the problems of coal chemical waste water treatment and improve the adsorption of activated coke,taking five typical low rank coals as research objects,the activated coke was prepared through carbonization and activation processes on rotary furnace. The effects of activation temperature,reaction time and amount of steam on activated coke properties were studied.The adsorption capacity of different activated coke was analyzed.The results showed that,when the activated coke was prepared from lignite,the optimum activation temperature was 800 ℃ ,the reaction time were 3 hours,the steam were 1050 g.When the raw material was candle coal,the best tempera-ture was 850 ℃ ,the reaction time was 4 hours,the steam were 1200 g.Under the optimal condition,the adsorption of activated coke pre-pared from lignite were 36.32 mg/ g which were 10% higher than that of activated coke prepared from the candle coal.The surface area of activated cokes had no significant correlation to the adsorption.The bigger the pore volume,the higher the adsorption.The two parts aperture ranging from 2 nm to 5 nm,5 nm to 20 nm led to different adsorption of activated coke.
Keywords：activated cokelow rank coaladsorptionpore volumespecific surface areacoal chemical industry waste water
Publication Date：2014-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 32-35,41 )