Most of the materials in thereactor（www.fanyingfuw.com） and the still in the distillation column are dangerous chemicals. Ifmaterial is a kind of spontaneous combustion and low flash point material, onceleakage, will form an explosive mixture with air. Fire encountered (open flame,spark, static electricity, etc.) may cause fire and explosion; if the materialis a kind of toxic chemicals, once the leak may cause personnel poisoningsuffocation.
In March 27, 1994, Shaoxing City, an auxiliary agent factory antistatic agent workshop explosion occurred, killing 4 people were killed and 8seriously injured. The main explosion limit is 100% ~ 3% of ethylene oxide inthe reactor. The main cause of the accident is that the air in the kettle isnot completely replaced by nitrogen, and the mixture concentration of ethyleneoxide reaches the explosion limit. The factory is a newly established near thevillage and township enterprises, the pressure vessel never tested, operator,technology and culture quality is low, no specially trained, don't knowproduction process of risk degree and fault disposal method. The project putinto operation before the not the "three simultaneous" review, thereis no complete safety operation procedures and technical measures, the reactorair whether replacement completely unable to through the instrument display,there is no established laboratory procedures for the determination of workersby experience and feeling.