煤焦水蒸气气化特性及动力学研究  

KINETIC AND CHARACTERISTIC STUDY OF CHAR-H_2O GASIFICATION BY ISOTHERMAL THERMOGRAVIMETRY

作　　者：杨小风[1] 周静[1] 龚欣[1] 于遵宏[1] 

机构地区：[1]华东理工大学洁净煤技术研究所,上海硕士生200237

出　　处：《煤炭转化》2003年第4期46-50,共5页Coal Conversion

基　　金：国家重点基础研究发展规划项目 (G19990 2 2 10 3 );高等学校骨干教师资助计划项目

摘　　要：运用等温热重法 ,对三种不同的煤焦 ,在反应温度 90 0℃～ 1 2 0 0℃之间进行水蒸气气化实验 .分别考察了常压下反应温度、水蒸气分压和煤种对反应的影响 ;并且对不同煤焦的反应进行动力学计算 ,求取动力学参数 .研究发现 ,煤焦水蒸气的反应与煤焦 - CO2 的反应相比速率要快得多 ,并且随反应温度升高 ,反应速率急剧增大 .In the research of char-H_2O gasification,the isothermal thermogravimetry was applied to study the reaction kinetics and the characteristics.In this paper,three kinds of coal char was studied under the temperature of 910 ℃,990 ℃,1 080 ℃ and 1 170 ℃.The writer studied how the steam volume and the kind of char affected the reaction under these different temperature.The kinetic parameters were calculated with two methods,and the results were compared in detail.It was found that this reaction is much faster than the reaction of char-CO_2 gasification.

关 键 词：煤焦 水蒸气 气化特性 动力学 等温热重法 反应温度 

分 类 号：TQ541[化学工程—煤化学工程] TQ546.2