石灰石的孔隙结构特性及对固氟反应的影响  

PORE STRUCTURE CHARACTERS OF LIMESTONE AND INFLUENCE UPON FLUORIDE RETENTION

作　　者：张淑新[1] 齐庆杰[1] 刘建忠[1] 周俊虎[1] 曹欣玉[1] 岑可法[1] 

机构地区：[1]浙江大学热能工程研究所,能源洁净利用与环境工程教育部重点实验室,浙江杭州310027

出　　处：《燃料化学学报》2002年第4期311-315,共5页Journal of Fuel Chemistry and Technology

基　　金：国家重点基础研究发展规划 (G19990 2 2 2 11) ;国家自然科学基金 ( 59876 0 36 );浙江省自然科学基金 ( 596 0 97)~~

摘　　要：用三种石灰石为研究对象 ,应用高温管式炉、扫描电子显微镜和压汞仪对样品进行了一系列宏观与微观的对比实验 ,探讨了石灰石的孔隙结构特性及对固氟反应的影响。结果表明 ,通过扩大比表面积、增加孔隙率和减小粒径等途径可以改善石灰石的孔隙结构特性 ,提高钙基固氟剂高温下的利用率。Human have attached importance to pollution of fluoride in coal How to improve efficiency of limestone fixing fluoride at high temperature is a problem to be resolved as soon as possible Pore structure characters of limestone is one of the factors that affect fluorine retention during combustion Taking three kinds of limestones as samples, we use high temperature stove, Scanning Electron Microscope and Quantachrome Pore Master to go on a series of contrast studies on macros and micro structure Results state clearly that some methods, including extending surface area, increasing porosity and superfine particle of the samples, can enhance the rate of limestone fixing fluoride at high temperature

关 键 词：煤 氟 石灰石 孔隙结构特性 固氟反应 固氟剂 燃烧 环境保护 

分 类 号：TQ534[化学工程—煤化学工程]