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磺化过程的危险性分析 | 2011-1-4 8:11:00

磺化是在有机化合物分子中引入磺(酸)基(－SO3H)的反应。常用的磺化剂有发烟硫酸、亚硫酸钠、亚硫酸钾、三氧化硫等。如用硝基苯与发烟硫酸生产间氨基苯磺酸钠，卤代烷与亚硫酸钠在高温加压条件下生成磺酸盐等均属磺化反应。

　　磺化过程危险性分析：
　　(1)三氧化硫是氧化剂，遇比硝基苯易燃的物质时会很快引起着火；另外，三氧化硫的腐蚀性很弱，但遇水则生成硫酸，同时会放出大量的热，使反应温度升高，不仅会造成沸溢或使磺化反应导致燃烧反应而起火或爆炸，还会因硫酸具有很强的腐蚀性，增加了对设备的腐蚀破坏。

　　(2)由于生产所用原料苯、硝基苯、氯苯等都是可燃物，而磺化剂浓硫酸、发烟硫酸(三氧化硫)、氯磺酸都是氧化性物质，且有的是强氧化剂，所以二者相互作用的条件下进行磺化反应是十分危险的，因为已经具备了可燃物与氧化剂作用发生放热反应的燃烧条件。这种磺化反应若投料顺序颠倒、投料速度过快、搅拌不良、冷却效果不佳等，都有可能造成反应温度升高，使磺化反应变为燃烧反应，引起着火或爆炸事故。
　　(3)磺化反应是放热反应，若在反应过程中得不到有效地冷却和良好的搅拌，都有可能引起反应温度超高，以至发生燃烧反应，造成爆炸或起火事故。

By:章仁根 | 阅读全文 | 回复(19) | 引用通告 | 编辑

标签：磺化过程危险性分析

Re:磺化过程的危险性分析 | 2011-1-4 8:13:52

分析危险性，落实预防措施，保障生产安全。

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原创 | 2016-9-6 17:55:36

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原创 | 2016-9-28 17:29:27

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原创 | 2016-9-30 12:05:41

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Re:在漫画中识别身边的违章 | 2016-10-9 19:12:20

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Re:在漫画中识别身边的违章 | 2016-10-15 16:30:58

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Re:在漫画中识别身边的违章 | 2016-10-17 5:50:28

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Re:在漫画中识别身边的违章 | 2016-10-17 11:25:01

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Re:在漫画中识别身边的违章 | 2016-10-20 23:49:06

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Re:在漫画中识别身边的违章 | 2016-10-21 3:39:21

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Re:在漫画中识别身边的违章 | 2016-10-21 13:29:41

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Re:在漫画中识别身边的违章 | 2016-10-22 13:11:38

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Re:在漫画中识别身边的违章 | 2016-10-22 23:16:36

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Re:在漫画中识别身边的违章 | 2016-10-23 0:00:46

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Re:在漫画中识别身边的违章 | 2016-10-23 3:16:42

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Re:在漫画中识别身边的违章 | 2016-10-23 14:17:28

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