How to deal with liquid nitrogen during cold storage renovation

How to deal with liquid nitrogen during cold storage renovation

With the increasing demand for national life, cold chain storage has become an indispensable link in daily life. Therefore, the storage and operation volume of the original cold storage is far from being able to meet the market demand. Renovation of cold storage has become the first choice for expansion of storage. When some cold storages whose refrigerant is ammonia are being refurbished, how to deal with liquid ammonia in order to be safe and economical?

　　Usually when the ammonia refrigeration system cold storage is modified, if the safety valve on the system accumulator is good and the accumulator does not need to be modified, it is safe and economical to recover all the ammonia in the system into the accumulator.

　　 Precautions for liquid ammonia treatment during cold storage renovation: different ammonia absorption refrigeration systems have different processes, but their storage and treatment methods are similar: tightly closed, providing adequate local exhaust and comprehensive ventilation. Operators must undergo special training and strictly abide by the operating procedures. It is recommended that operators wear filter-type gas masks (full face masks), chemical safety glasses, anti-static overalls, and rubber gloves. Keep away from fire and heat sources, and smoking is strictly prohibited in the workplace. Use explosion-proof ventilation systems and equipment. Prevent the gas from leaking into the empty space of the workplace.

　　The safety of cold storage using ammonia refrigeration system has always been a hot spot in society. Therefore, when the ammonia refrigeration cold storage is modified, safe and economical methods must be adopted for the treatment of liquid ammonia.