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灭多威是一种广谱农药,有多种生产方法,我厂采用甲胺甲酰氯法生产工艺,其中的脱溶岗位采用减压脱溶方式,当真空度不小于0.08MPa时方可将有机相抽入脱溶釜中,然后缓慢向脱溶釜夹套通入蒸汽,使物料升温开始脱溶,当观察回流视盅无明显回流且液相温度达75～78℃,即为终点。1 脱溶工段爆炸事故及原因分析1.1 事故概况 1993年3月17日中午山西化学厂农药车间灭多威工序脱溶岗位发生一起爆炸事故,大量气体冲出脱溶釜发生着火爆炸,
Methomyl is a broad-spectrum pesticide, a variety of production methods, I plant methylamine chloride production process, which used in the desolventizing desolvation post dissolution mode, when the vacuum is not less than 0.08MPa before The organic phase is drawn into the desolventizing kettle, and then steam is slowly introduced into the desolventizing kettle through the jacket so that the temperature of the material starts to be desolvated. When the refluxing cup is not obviously refluxed and the liquid temperature reaches 75 to 78 DEG C, it is the end point. 1Demolition Section Explosion Accident and Cause Analysis 1.1Information on March 17, 1993 at noon, Shanxi Chemical Plant pesticide workshop methomyl process dissolution of an explosion occurred in the post, a large amount of gas washed out of the kettle out of the fire explosion,