多孔CaO与SO_2的反应及其孔隙结构变化  

A study of sulphurization characteritics of porous CaO and its pore structural properties

作　　者：郑瑛[1] 周英彪[1] 陈小华[1] 郑楚光[1] 

机构地区：[1]华中科技大学煤燃烧国家重点实验室

出　　处：《华中科技大学学报（自然科学版）》2002年第10期14-16,共3页Journal of Huazhong University of Science and Technology(Natural Science Edition)

基　　金：国家重点基础研究专项经费资助项目 (G1 9990 2 2 2 0 5 ) ;国家自然科学基金资助项目 (5 0 0 0 60 0 2 )

摘　　要：通过煅烧CaCO3 试剂 ,得到具有不同孔隙结构的三种CaO样品 ,然后与SO2 进行反应 ,得到了CaO转化率随反应时间、反应温度以及SO2 浓度的变化规律 ,从孔隙结构的角度分析了CaO硫化反应的控制机理 .同时对CaO孔隙结构在单纯烧结过程以及硫化反应过程中的变化规律进行了研究 ,阐明了CaO转化率与其孔隙结构之间的关联性 .Three CaO samples with different pore characteristics are prepared by calcining CaCO_3 reagent under different conditions. The sulphurization characteristics of these samples is studied while the effect of several parameters such as reation time, temperature and SO_2 concentration on conversion extent is considered. The pore structural parameters of reacted samples are measured with ASAP2000 specific surface area measuring instrument, and the control mechanism of sulphurization reaction is analysed in the view of pore structural properties, as well as the relationship between CaO conversion extent and pore structural parameters is studied. Meanwhile, the change of pore structural parameters due to sintering is also studied. The results are compared with those due to reaction.

关 键 词：多孔CaO SO2 脱硫规律 孔隙结构 烧结 硫化反应 氧化钙 二氧化硫 煅煤 比表面积 

分 类 号：TK16[动力工程及工程热物理—热能工程]