1, phosphorus oxychloride preparation, many factories use water jet vacuum to pump phosphorus oxychloride to the storage tank, so pay attention to the start and stop sequence of water jet vacuum to prevent accidents, especially vacuum buffer tanks should be checked frequently to prevent The water is sucked into the storage tank and an accident occurs.
2, phosphorus oxychloride occurs in the production of hydrogen chloride, care should be taken to prevent the phosphorus oxychloride from overdosing. If the drop is overdose, it is necessary to slowly add water to decompose the phosphorus oxychloride and then discharge the phosphoric acid.
3, the hydrolysis of materials containing phosphorus oxychloride is generally recommended to slowly put the material into the hydrolysis tank with ice water, and constantly stirring, as far as possible not to add water to the material, it will be very dangerous operation.
4. For systems using phosphorus oxychloride, the moisture of all materials should be tested as much as possible to prevent explosion accidents caused by excessive water.
5. The reactor containing phosphorus oxychloride should also be checked for damage to the wall to prevent water from leaking into the accident.
6. When the phosphorus oxychloride is added dropwise to the reaction vessel, it is necessary to observe whether an abnormal situation has occurred. If the feeding is stopped immediately, the reaction is carried out after checking the cause.
Treatment: The principle of first aid and treatment after inhalation is the same as that of irritating gases such as chlorine and hydrogen chloride. When contaminating the skin, first use paper, cotton, etc. to remove the liquid, then rinse with water for at least 15 minutes; if washed with a small amount of water, it can form phosphoric acid on the skin and cause more serious burns. Treated by acid burns.
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