氯化铁生产爆炸事故原因分析及对策

Cause Analysis and Countermeasures for the FeCl_3 Explosion

从生产工艺、反应机理角度分析了氯化铁生产中氯化炉发生爆炸的原因,即氯化铁生产系统负压失控,大量的气相氯化铁聚集于氯化炉内,在高温的作用下发生分解反应,分解反应达到平衡后,在过量氯气的条件下,合成反应产生的能量积聚导致爆炸。提出了改进措施,即改变测压点的位置选择、增加电动蝶阀安全联锁、设置氯气切断阀并与生产系统负压进行安全联锁、加设防护罩收集事故气,以及加强培训提高操作人员责任心。实施后效果明显,杜绝了氯化炉爆炸事故的发生。

The reasons of explosion happened in chlorination furnace in ferric chloride production are analyzed from production techniques and reaction mechanism. Proposed concrete advices was also raised in the paper which include the selection of pressure tapping, adding electric butterfly valve safety interlock and protection cover to receive exhaust gases. Setting a chlorine stop valve and connect production system negative pressure as safety interlock. Further more, strengthen training in sense of responsibility of operation staff is also needed.