摘要
研究添加粉煤灰对脱硫过程的作用,实验在滴管炉上进行,温度为1200℃.结果表明,一些宏量元素的金属氧化物(如Fe2O3)对脱硫过程具有催化作用,但这种催化作用随Fe2O3掺加量的改变而变化,先升高后降低,有一个最佳值;一些微量元素的金属氧化物(如MnO2)对脱硫过程具有更强的催化氧化作用,当MnO2的掺加量为3%时。
This paper investigates the effects of adding coalash under limestone desulphurization in pulverizedcoal boilers.The experiments were carried out at 1200℃ in the particle furnace.The experimental results show that some massive elements' metal oxides,for example,Fe2O3,may catalyze the reaction of SO2 with limestone,and this catalytic effect changes with the increasing metal oxides weight ratio.Moreover,a few microelements in coal ash,e.g.MnO2,play an important catalytic and oxide role in the proceedings of desulphurization.The desulphurization efficiency nearly double when the addition of MnO2 is 3%.
出处
《环境科学》
EI
CAS
CSSCI
CSCD
北大核心
1998年第4期59-61,共3页
Environmental Science
基金
国家自然科学基金
关键词
脱硫
喷钙脱硫
金属氧化物
烟气脱硫
粉煤灰
desulphurization,catalysis,Ca/S,limestone desulfurization,metal oxides.