主催: 社団法人 日本エネルギー学会
共催: 化学工学会 (エネルギー開発特別研究会)
会議名: 第38回石炭科学会議
回次: 38
開催地: 東北大学工学部 青葉記念会館
開催日: 2001/11/13 - 2001/11/14
p. 433-436
Release behavior of sodium and potassium was followed during pyrolysis of coals in a nitrogen stream up to 1200℃. Sodium and potassium in coal and char were classified into five fraction by a serial dissolution method with H_2O, CH_3COONH_4, HCl, H_2SO_4 and HF solutions. Fraction of H_2O soluble and CH_3COONH_4 soluble decreased, and fraction of H_2SO_4 soluble increased with heat treatments for both alkali metals. Characteristic change was observed for the fraction of each solvent soluble depending on the kind of coal and pyrolysis condition.