Ethical ethylene companies must prevent explosion strictly

Ethylene oxide, a boiling point of 10.7 ° C, is a colorless flame at room temperature, which is toxic. Its steam can form an explosive mixture with air, with an explosion limit of 3%to 100%(volume ratio). Its steam is heavier than air, and it can spread to a fairly far place in a lower place. When the temperature is higher than 40 ° C, ethylene oxide begins to aggregate, and can be decomposed or aged with catalyst (such as aluminum chloride, iron oxide, alumina, metal potassium, acid, alkali) contact, release a lot May explode. On June 18 this year, ethylene ethane device in Shanghai Petrochemical Shanghai Petrochemical Company had a leak and explosion, causing one person to die.

Ethylene oxide is mainly used to manufacture ethylene glycol, surfactants, detergents, plasticizers and resin, etc., and is widely used in pharmaceutical and electronics. E -ethylene ethylene production, storage, and use of enterprises should deeply learn from accident lessons, and strengthen risk control and control for ethylene ethane risk characteristics. The first is that when the ethylene ethylene system is running, it is not allowed to knock, should not be repaired and tightened, and must not be over pressure. Negative pressure is strictly prohibited. The second is that the production, use and storage site of ethylene oxide shall be set up to leakage detection alarms to use explosion -proof ventilation systems and equipment. During the transmission process, the steel cylinders and containers must be grounded and crossed. Based on impact and vibration. It is strictly forbidden to use electromagnetic cranes and chain rope to be lifted and handled. Third, it is forbidden to contact the alkaline metal, hydroxide or high -active catalysts such as iron, tin, aluminum -free or iron, or aluminum oxides. Fourth, the ethylene ethylene storage tank for industrial shall be sealed in nitrogen. The volume score of nitrogen is not less than 99.9%, the volume score of the oxygen in nitrogen seal must not be greater than 0.5%, and the storage temperature is not higher than 10 ° C.

Relevant regional emergency management departments must conduct detailed touch of ethylene ethylene enterprises in the jurisdiction, supervise and guide enterprises to comprehensively investigate and rectify hidden dangers involving ethyl ethyne safety issues, organize on -site supervision and inspection, and make full use of dangerous chemical safety production risk monitoring and warnings The system, strengthen online inspections random inspections, and effectively control the safety risks of ethylene ethylene.

(Supply of the Chemical Registration Center of the Emergency Management Department)

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