摘要
在鼓泡反应器中对次氯酸钾氧化单质汞的规律进行了研究,研究结果表明:初始元素汞浓度的增加不利于Hg0去除;次氯酸钾初始浓度的增加、强酸条件均有利于Hg0的去除;反应温度不宜过高,否则会阻碍Hg0的去除;次氯酸钾在酸性环境中和中性环境中氧化单质汞的机理不同,而在强碱性环境中次氯酸钾基本上不能氧化单质汞。
The oxidation law of elemental mercury using KCIO oxidant was studied in the bubble reactor. The effects of initial oxidizing solution concentration, reaction temperature, pH and mercury concentration in the inlet of the reactor on mercury oxidative absorption in KCIO were investigated. The results indicate that higher concentrations of KC10 fa- vor Hg~ removal, with a greater efficiency observed in acidic than in alkaline solution. High temperature inhibits Hg~ absorption in aqueous absorbent. The pH value increases during the reaction process, and the reaction system depletes H ＋ or produces OH-. In conclusion, the major influencing factors on the levels of HgG removal are pH and chlorite concentration in solution.
出处
《煤炭学报》
EI
CAS
CSCD
北大核心
2010年第2期303-306,共4页
Journal of China Coal Society
基金
四川省科技厅公益基金资助项目(2007SGY032)
成都信息工程学院发展基金资助项目(KYTZ200701)
关键词
烟气
单质汞
氧化
吸收
次氯酸钾
flue gas
elemental mercury
oxidation
adsorption
KCIO
