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怎樣避免減少HCl生産事故的發生

返回打印发布时间：2013/11/20 点击：8704

氯化氫用途广泛，工业生产中是必不可少的原材料，但是合成制备过程如果不严格把握好配比，那么很可能会有爆炸危险。

“二合一”炉合成氯化氫供氯乙烯生产工艺中存在氯气过量而使氯化氫中游离氯超标等隐患，氯化氫中游离氯一旦超标，只要在氯乙烯工序与乙炔混合，立即发生爆炸性反应，产生重大安全事故。

行业内公认的氯化氫游离氯超过400PPm与乙炔混合即可发生爆炸（保证氯乙烯混合器反应温度不超过50℃），过氯量达28%以上，远远大于爆炸极限，如果没有及时采取措施，产生爆炸是必然的。改进措施：增加氢气压缩机与电解装置的安全连锁，增加一台氯化氫游离氯在线分析仪，加强氢气岗位与二合一岗位的信息沟通，我公司氢气岗位与二合一岗位距离有500米，按氢气的最高流速，产生负压后的氢气大约有一分钟才能到达二合一岗位，如果及时联系，二合一岗位应该有时间切换生产酸的，进而避免过氯造成后工序爆炸。效果：电解装置出现事故跳停时，氢气压缩机连锁停；两台氯化氫游离氯在线分析仪增加了检测的可靠性。事故以来也发生了几次氢气负压现象，但都通过及时切换生产盐酸避免了事故的发生。

减少氯化氫生产过程中事故的发生，是氯化氫生产企业经济效益的重要保障。

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