摘要
本文针对电解铝烟气中SO_2浓度低、烟气量大等特点,采用水平式钙法脱硫技术,研究了烟气中SO_2浓度、液气比、钙硫比、吸收液pH值等对烟气中SO_2脱除率的影响。结果表明:烟气浓度为200~300 mg/Nm^3,液气比为15∶1、钙硫比为1∶1、吸收液pH值为7.0的条件下,使用水平式钙法脱硫塔脱除SO_2,脱除率可达90%以上,为解决低浓度电解铝烟气中SO_2排放带来的环境问题提供理论依据和技术支撑。
In this paper the horizontal calcium desulphurization technology is used to deal with pot fume with low SO2 concentration and large volume of pot fume,and the influence of SO2 concentration,liquid-gas ratio,calcium-sulfur ratio,pH value of absorbent on removal rate of SO2 in pot fume is investigated.The results show that removal rate of SO2 can reach more than 90%by horizontal calcium desulfurization tower under 15∶1 of the ratio of liquid to gas,1∶1 of the ratio of calcium to sulfur,7.0 of the pH value of the absorbent and the 200~300mg/Nm^3 of concentration of pot fume.The research results provide theoretical basis and technical support for solving the environmental problems caused by SO2 emissions from low concentration pot fume.
作者
田林
彭学斌
林琳
翟忠标
李小英
杨妮
Tian Lin;Peng Xuebin;Lin Lin;Zhai Zhongbiao;Li Xiaoying;Yang Ni(State Key Laboratory of Pressure Hydrometallurgy Technology for Associate Nonferrous Metal Resources,Kunming Metallurgical Research Institute,Kunming 650503,China)
出处
《轻金属》
CSCD
北大核心
2018年第8期27-30,共4页
Light Metals
基金
云南省重点新产品开发项目支持(2016BA010)
关键词
电解铝
SO2
钙法
水平脱硫
aluminum reduction
SO2
calcium method
horizontal desulphurization
