摘要
随着石油焦中硫含量的增加，硫元素生产过程中转化为S02所形成的环境污染日趋受到关注。本文以铝用阳极生产过程中的硫元素为研究对象，分析了原料、煅烧、焙烧及电解过程中硫元素在生产过程中的迁移行为。当煅烧温度加热到1330℃以上，稳定的噻吩结构中的硫碳键分解，脱硫效果迅速增加，硫元素生成SO2。焙烧温度为1100～1200％时，在长时间高温状态下存在极少量的脱硫。硫元素在电解槽中初始会生成COS、CS2以及S02等气体，大部分气体会被氧化成S02气体。
With the increasing sulfur content in petroleum coke, sulfur would change to SO2 that was deleterious effects on environment which was graduallg concerned. Taking sulfur in anodes used for aluminum as research object, the mobility of sulfur in anode raw material was analyzed during calcination, baking and aluminum reduction. When the calcination temperature was above 1330℃, the S - C bond of stable thiophene structures was decomposed, the desulfurization was increasing, sulfur became SO2 gas in duct gas. The baking temperature was 1100 ～1200℃ for long time, the content of S in the an- odes changed little. The sulfur in aluminum reduction cell was initially consumed as carbonyl sulfide （COS） , CS2 and SO2, most of which were oxidized to SO2.
出处
《轻金属》
CSCD
北大核心
2015年第4期45-48,共4页
Light Metals
关键词
硫
煅烧
焙烧
电解槽
sulfur
calcinations
baking
aluminum reduction cell
