FGD石膏高温条件下二氧化硫释放规律研究  

Research of SO_2 release regulation of FGD Gypsum under high temperature

作　　者：李立 金晶[2] 姜江[2] 刘瑞[2] 

机构地区：[1]上海电气电站集团工程公司,上海201100 [2]上海理工大学动力工程学院,上海200093

出　　处：《上海电力》2008年第3期268-271,共4页Shanghai Electric Power

摘　　要：火电厂烟气脱硫后产生的石膏中未被氧化的CaSO3在高温条件下应用时可能会分解释放SO2造成二次污染。文章介绍了FGD石膏的性质和特点,分析了升温速率对FGD石膏SO2释放的影响,利用气相色谱仪研究了FGD石膏在高温使用过程中SO2释放情况。研究结果表明:SO2释放量与CaSO3、残碳C量有关,其释放量随温度和升温速率的提高而增大,并且FGD石膏在氧化条件下的稳定性高于还原条件下。Un-oxidized CaSO4 in FGD gypsum maybe decompose and release SO2 on the high temperature to make second pollution. The paper introduces the contents , the characteristics and the impact of flue gas gypsum . Then studies the release of SO2 when FGD gypsum used on high temperature with gas chromatographyo The result shows that： the release of SO2 connects to CaSO3 and remainder of C. The quantities of SO2 augments with the temperature and heating rates. The stability of FGD gypsum in oxidation atmosphere is much better than that in deoxidizing atmosphere.

关 键 词：FGD石膏 X衍射 气相色谱分析 SO2释放规律 

分 类 号：X701.3[环境科学与工程—环境工程]