依兰煤制备脱色用活性炭探索试验  

Exploratory Research on Preparation of Activated Carbon from Yilan Coal for Decolorization

作　　者：王志高[1,2] 蒋剑春[1,2] 邓先伦[1,2] 常侠[1,2] 张燕萍[1,2] 刘汉超[1,2] 

机构地区：[1]中国林业科学研究院林产化学工业研究所 [2]国家林业局林产化学工程重点开放性实验室,江苏南京210042

出　　处：《生物质化学工程》2006年第4期41-43,共3页Biomass Chemical Engineering

摘　　要：以依兰煤为原料，采用水蒸气活化法，制备出了具有焦糖脱色力的活性炭。炭化得率为74．0％～76．2％，活化得率低于14．0％时，样品吸附性能可达到：亚甲基蓝吸附值232．5mg／g，B法焦糖脱色率80％，对实物溶液的脱色能力均好于标准炭。采用简易有效方法对活性炭中的灰分进行处理，使得样品中的灰分及杂质降到合格范围之内，可用于液体的脱色。对活化工艺以及过程中出现的问题作了探讨，发现活化温度在860℃时，延长活化时间有利于提高样品的脱色性能，但活化得率降低。Activated carbon with decolorization capability to caramel was prepared from Yilan coal by activation with water vapor. When the yields of carbonization and activation were respectively 74.0 % - 76.2 % and below 14.0 %, the adsorption properties of prepared activated carbon were： methylene blue 232.5 mg/g, decolorization to caramel B 80%, and better decolorization capability to colorful aqueous solution in comparison with reference material of activated carbon. Ash and other impurities in activated carbon could be reduced to meet the requirements for the decolorization of colorful aqueous solution by a simple and effective method. The activation technique and some problems occurred during activation process were discussed. It was found that the decolorization capability of prepared activated carbon was increased by prolonging activation time at activation temperature of 860 ℃, but the activation yield was reduced at the same time.

关 键 词：依兰煤 活性炭 水蒸气活化 脱色 

分 类 号：TQ424.1[化学工程]