磷酸活化褐煤制备活性炭动力学  

KINETICS OF PREPARATION ACTIVE CARBON FROM LIGNITE WITH PHOSPHORIC ACID ACTIVATION

作　　者：陈樑[1] 方智利[2] 刘中华[3] 

机构地区：[1]昆明理工大学一碳化工研究中心 [2]华东交通大学基础学院 [3]昆明理工大学材料与冶金工程学院

出　　处：《煤炭转化》2005年第1期61-65,共5页Coal Conversion

基　　金：云南省教委重点基金资助项目 (0 0 3 3 0 2 9)

摘　　要：研究了磷酸一步炭活化云南先锋褐煤的炭活化动力学 .结果表明 ,用活化剂磷酸和助剂浸渍褐煤后 ,可加速炭活化进程 ,使褐煤中氢和氧主要以水和低分子量的醇醛形式脱除 ,炭活化反应速度对活化过程的相对挥发分为一级 ,并且用磷酸浸渍褐煤可提高炭活化速度常数 60 % .The kinetics of preparation active carbon from Yunnan Xianfeng lignite with phosphoric acid activation was studied. The results reveal that pre-impregnation lignite with phosphoric acid solution before carbonization had an acceleration to the carbonization and activation of lignite, and the element H and O were elimination from lignite by H 2O, alcoholic or aldehyde little molecular etc.The reaction of carbonization and activation of lignite is one order-reaction to relatively volatiles, and the method of pre-impregnation lignite with phosphoric acid increased 60% of the rate constant in the process of carbonization and activation of 400 ℃.

关 键 词：褐煤 磷酸 活性炭 炭活化 动力学 

分 类 号：TQ424.11[化学工程]