循环流化床锅炉脱硫灰和普通粉煤灰的特性研究.pdf
文档页数：4文档大小：299.69KB文档格式：pdf粉煤灰综合利用 2010o.1 FLY ASH COMPREHENSIVE UTILIZATION循环流化床锅炉脱硫灰和普通粉煤灰的特性研究 Study on Characteristics of CFBB Desulfurated Fly Ash and Pulverized Fly Ash姚志通,夏枚生,叶瑛,张路 (浙江大学海洋科学与工程学系,浙江杭州310027) 摘要:分析研究了循环流化床锅炉脱硫灰和普通粉煤灰的化学组成、矿物相组成和热行为等。研究结果表明,脱 硫灰烧失量大,CaO含量高,其主要晶相为石英方解石和硬石膏,还有少量莫来石,玻璃相含量较少。普通粉煤灰的主 要晶相为莫来石和石英相。扫描电镜观察,普通粉煤灰主要以球形玻璃微珠为主球形微珠表面光滑。脱硫灰则以不规 则形状的颗粒为主几乎无球形颗粒。两种粉煤灰的红外光谱分析和差热分析也表现出明显差异,主要归因于脱硫灰中 大量存在的硬石膏和方解石。 关键词:循环流化床锅炉脱硫灰;普通粉煤灰;矿物相组成;特性研究 中图分类号:X773 文献标识码:A 文章编号:1005-8249(2010)01-0006-04 ( Departmentof Ocean Science and Engineering ,Zhejiang University ,Hangzhou 310027 ,China ) Abstract :The chemical positions ,mineral positions and thermal behavior of the circulating fluidined bed boiler CFBB )desulfurated fly and pulverized ash were investigated The results showed that the CFBB fly ash manifested as high content of and higher . The major minerals present in the CFBB desulfurated fly ash were quartz ,calcite and anhydrite with little mullite .There a little phase inthe CFBB desulfurated fly ash .While ,the main mineral phases of pulverized fly ash were mullite and quartz .Observed by SEM ,CFBB . Key words cireulating fluidized bed boiler :desulfurated fly ash :pulveri...
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