干冰是如何储存的?
梅尔
2022/04/08
干冰是什么?干冰实际上是固体二氧化碳,在6250.5498千帕的压力下凝结成无色液体,然后在低压下迅速蒸发形成干冰。干冰有什么用途?干冰的应用非常广泛,如人工降雨、新鲜食品的保存、消防、冷冻疗法、医院血浆和医疗药品的保存等。在食品、卫生、工业和餐饮方面有许多应用。干冰需要什么样的储存条件?因为干冰的凝固温度是-78.5,当达到-78度时就开始挥发,很容易挥发升华成无毒、无味,比气体二氧化碳的固体体积大600-800倍,所以干冰不能储存在完全密封的体积容器中,比如塑料瓶,干冰和液体混合容易爆炸,所以干冰必须储存在专门的冰柜中。干冰在零下60度和零下40度的超低温冰箱中可短期储存5-10天,但由于温度大于干冰的溶解点,干冰会有挥发,产生气体,因此只适合短期储存少量,放置在零下80度以下的超低温冰箱中可长期储存。干冰必须正确储存和使用,防止不正确的干冰处理造成不必要的伤害。干冰作为冷链运输的制冷剂,由于辉瑞/BioNTech疫苗的-70°C的极低温运输要求,因此被推上了聚光灯下。 A large number of medical institutions in Africa choose to use ultra-low temperature freezers to store dry ice, which starts to evaporate at -78°C, so they have to choose freezers with lower temperatures. The DW-HW138 and DW-HW328 ultra-low temperature freezers developed by Meling Biomedical are very suitable for storing dry ice, and the temperature of minus 86 degrees makes the dry ice not easy to volatilize. The ultra-low temperature freezer is slow to dissipate cold when opening the door, and the cover is sealed and pressed and sunk with good insulation and cooling effect. Meling biolmedical -86 ℃ ultra-low temperature freezer DW-HW138 has a high-precision microcomputer temperature control system, temperature control accuracy of 0.1 ℃; 14 kinds of sound and light alarm system (high and low temperature alarm, sensor failure alarm, high ring temperature alarm, open the door alarm, voltage abnormalities, power failure alarm, condenser dirty alarm, battery power low alarm, system failure, etc.), items stored more safely; comes with USB temperature recorder, recorder and controller work with long time backup battery; stainless steel inside, painted steel plate outside, 6 units of casters for easy handling. The top door has key ...