61.種々の酸処理による石炭性状の変化と液化反応性の向上(石炭利用における科学と工学の融合)

抄録

Mild acid pretreatment with acetic acid, hydrochloric acid, and methoxyethoxy acetic acid solutions was performed to modify the pyrolysis behavior and liquefaction reactivity of coals. The pretreatment effectively removed ion-exchangeable cations from lower ranking coals, and increased the volatile yield in the flash pyrolysis. The liquefaction activity of the coals was also improved very much by the acid treatment. The effects of the mild acid treatments on the thermal and liquefaction reactivities of the coals are discussed based on the structural and compositional cahnges by the acid treatment.