CCTV news reported that Ms. Wu of Beijing recently bought an ice cream cake and put it in the refrigerator. It was expected that not only did the cake not be eaten, but the refrigerator door was also blown up. Experts said that this was caused by improper storage of dry ice. Ms. Wu said that in order to make a birthday cake for ice cream, I found something like an icicle in the cake box. I didn't know it was dry ice, so I put it in a water bottle and put it in the fridge with the cake. As a result, Ms. Wu returned from eating and found that the refrigerator door was blown out almost 1 meter away. The refrigerator's plastic box had been completely crushed.
According to a water quality expert from the Beijing Joint Intelligence Laboratory, the dry ice temperature is very low, much lower than the temperature of the refrigerator, and dry ice has begun to evaporate at the temperature of the refrigerator. Ms. Wu put the dry ice in a closed bottle. Can not stand, when the volume of dry ice expansion to a certain extent, mineral water bottles will explode.
In fact, the dry ice volatilizes at a temperature of minus 87.5 degrees Celsius, while the refrigerator freezer temperature ranges from minus 4 degrees Celsius to minus 24 degrees Celsius. Dry ice begins to evaporate at the temperature of the freezer. Dry ice evaporates and releases a solid dry ice volume. More than 1,000 times as much carbon dioxide gas, if placed in a closed environment, the storage environment will have great pressure, and ultimately will cause an explosion.
Dry ice should pay attention to the following points in use:
1. Do not hold it in your hand or place it in your mouth. Use cotton gloves or a clip. Take care that the plastic gloves are not protective.
3, need to be placed in a ventilated place, do not place in a confined space such as a refrigerator, can not be mixed with the liquid.
3, a large number of operations need to be equipped with equipment.
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