氨是一种使用广泛的制冷剂,具有沸点低、导热系数大、汽化潜热大、单位容积制冷量大、价格低廉、在冷凝器和蒸发器中压力适中以及有漏气现象易被发现等优点,因此,氨冷冰机作为制冷装置被广泛应用于民用和工业生产中。在石油化工行业,氨冷冰机常用于需要低温操作的装置,为石油裂解后的深冷分离、各类化学合成装置导出反应热提供冷量。 Ammonia is a widely used refrigerant with the advantages of low boiling point, large thermal conductivity, large latent heat of vaporization, large capacity per unit volume, low price, moderate pressure in condensers and evaporators, , Therefore, ammonia cold ice machine as a refrigeration device is widely used in civil and industrial production. In the petrochemical industry, ammonia cold ice machine is often used in low temperature operation of the device for the cryogenic separation of oil cracking, chemical synthesis of various types of export heat of reaction to provide cold.