煤焦与水蒸气及CO_2共气化反应性研究  

Characteristic study on the co-gasification of coal chars with CO_2 and steam

作　　者：徐春霞[1] 徐振刚[1] 步学朋[1] 董卫果[1] 文芳[1] 边文[1] 

机构地区：[1]煤炭科学研究总院北京煤化工研究分院,北京100013

出　　处：《煤炭学报》2009年第7期952-956,共5页Journal of China Coal Society

基　　金：国家高技术研究发展计划(863计划)资助项目(2007AA05Z324);中国矿业大学煤炭加工与高效洁净利用教育部重点实验室开放基金项目资助(CPEUKF06-01)

摘　　要：采用常压热天平实验装置,在温度为1173-1323 K条件下,研究了3种煤焦与水蒸气、CO2及二者不同配比混合气体的气化特性.结果表明：气化反应温度越高,煤焦的气化反应性越好;气化剂配比中水蒸气的含量越高,煤焦的反应性越好.3种煤焦与水蒸气及CO2共气化反应性顺序为：神东〉宝一〉王坡;同一气化剂配比下,3种煤焦的平均比气化速率随温度的升高而增大,同一气化温度下,3种煤焦的平均比气化速率随气化剂中水蒸气含量的增加而增大;3种煤焦在与水蒸气及CO2混合气体共气化过程中表现出的交互作用不同.The gasification characteristics of three kind of coal chars with CO2 , steam and the gaseous mixture of this two gases with different ratio were studied at normal pressure, 1 173 - 1 323 K, by isothermal thermogravimetry. The results show that the higher the gasification temperature, the better the reactivity of coal charsis. The higher the content of steam in the gaseous mixture of CO2 and steam, the better the reactivity of coal charsis. Reactivity of three kind of coal chars co-gasification with steam and CO2 is in the order： Shendong 〉 Baoyi 〉 Wangpo. Mean specific reaction rate of three kind of coal chars increased with temperature at the same mixture ratio of gasifying agent, which also increased with the increasing of steam content in gasifying agent at the same temperature. Different synergistic effects were found during the gasification process of three kind of coal chars with gaseous mixture of steam and CO2.

关 键 词：煤焦 水蒸气 CO2 共气化 交互作用 

分 类 号：TQ546[化学工程—煤化学工程]