NaBr对煤燃烧NO还原和汞氧化影响的实验研究  

EFFECT OF SODIUM BROMIDE ON NITRIC OXIDE REDUCTION AND MERCURY OXIDATION DURING COAL COMBUSTION

作　　者：马晶晶[1] 姚洪[1] 罗光前[1] 方欣[1] 刘伟[1] 徐明厚[1] 

机构地区：[1]华中科技大学煤燃烧国家重点实验室

出　　处：《工程热物理学报》2010年第8期1407-1410,共4页Journal of Engineering Thermophysics

基　　金：国家自然科学基金资助项目(No.50721140649;No.50721005)

摘　　要：在六枝烟煤中添加溴化钠（NaBr）,研究了在煤粉燃烧过程中NaBr对汞的形态转化和NO的还原规律的影响。实验在石英固定床反应器上进行,温度范围为800～1100℃。实验结果表明,温度窗口为250～400℃时,NaBr对单质汞的氧化有-定的促进作用;在合适的温度范围内（800～1000℃）,NaBr的添加能够有效地抑制NO的生成,取得比单独煤粉燃烧较好的脱硝效果。在900℃时,添加NaBr使NO生成量下降了60%。在1100℃时,NaBr对NO的还原有抑制作用。The effect of NaBr on mercury oxidation and NO reduction during coal combustion was studied by adding NaBr to a bituminous coal before its combustion.Combustion experiments were carried out in a quartz fixed bed reactor in the temperature range of 800～1100℃.Experimental results showed that NaBr had promotive effect on mercury oxidation,especially at 250～400℃.In the temperature range of 800～1000℃,NaBr reduced NO production.At the temperature of 900℃, NO reduction ratio reached 60%.However,at the temperature of 1100℃,NO production slightly increased by adding NaBr.

关 键 词：溴化钠 汞 NO 煤燃烧 

分 类 号：TQ534[化学工程—煤化学工程]