Journal: Journal of Safety Science and Engineering DOI: 10.32629/jsse.v4i4.21720
Abstract
以二甲基硫醚(DMS)为原料、30%双氧水为氧化剂,在板式微通道反应器与静态管式反 应器串联的连续流装置上研究了氧化合成二甲基亚砜(DMSO)的工艺条件,考察了反应 温度、停留时间、氧化剂配比和进料方式对DMS转化率和DMSO选择性的影响,并进行 了连续运行稳定性验证。结果表明,微通道反应器优异的传热传质性能可显著强化这 一强放热氧化过程：在反应温度60℃、停留时间30 s、n(H₂O₂)：n(DMS)=1.05、双氧水分三股进料的条件下,DMS转化率达99.5%,DMSO选 择性为99.4%,副产二甲基砜含量低于1%；装置连续运行8 h,转化率和选择性均无明显波动,DMSO平均收率为98.9%,粗产品经减压精馏后纯度不 低于99.9%。与间歇釜式工艺相比,连续流工艺将反应时间由1～3 h缩短至30 s左右,持液量小、控温精确,为DMSO的安全、高效、绿色生产提供了可行路径。
Keywords
微通道反应器；二甲基亚砜；双氧水；氧化；连续流
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