Recently, a hot pot is on fire. Do not plug in electricity, do not use fire, cold water can eat, by a lot of food favorite. But do you know how dangerous self heating hot pot is? Self heating hot pot has a great potential safety hazard, so for your own health, try not to eat it!
However, there are many negative news. A few days ago, Chinese students studying in the United States ate the self heating hot pot, which triggered the alarm in the dormitory. In 2017, when a consumer was eating the self heating hot pot, the glass table under the lunch box broke due to the high temperature & hellip; & hellip;
How high can the temperature of the self heating hot pot be? According to the modern express reporter, the water will be heated to 96 ℃ in more than one minute. According to the introduction of the production enterprise, the principle of utilization is that the quicklime is heated when encountering water, which can make the water boil, and the water vapor produced is 110 ℃.
① operate according to the instructions. For more than one minute, the water temperature inside two self heated hot pots and one self heated rice is above and below 96 ℃ (the data is still changing)
② operation manual of self heating hot pot
③ measure the temperature of the box cover with the infrared temperature gun
How hot is the self heating hot pot? A brand double 11 sold more than 50000 boxes
Modern Express reporter found that the official flagship store of a brand of self heating hot pot on the e-commerce platform, a combination of tripe and beef, sold 54410 pieces during the double 11. In Taobao, the home page shows that the monthly sales of each product are 45000, and some products sell more than 10000.
Not only the online hot pot, but also the offline supermarket of self hot pot is very popular. Reporters in Xinjiekou strolled a few supermarkets, whether large-scale stores or small convenience stores, there are self heating hot pot on sale. In a supermarket chain, a row of containers are placed with a brand of self heating hot pot, which has a variety of flavors such as meat hot pot and vegetable hot pot.
During the reporter's visit, customers came to buy hot pot one after another. An aunt said that the children like this kind of one person hot pot, which is convenient and delicious. In addition, the sales volume of self heated rice placed next to the self heated hot pot is also good. According to the supermarket staff, the self heated food has been sold for a long time with frequent purchase.
Self heating food has developed rapidly in recent years. On October 25 this year, the first national conference of self heating food industry was held in Chengdu, Sichuan Province. Chen Zhaohui, President of Chengdu Food Industry Association, said in an interview with the media that the market scale of the whole industry of self heating food is growing rapidly at an annual rate of 20%. Since the end of last year, the convenience hot pot has attracted the attention of the industry. Up to now, there are more than 50 brands, large and small, including some large enterprises and brands.
If the temperature exceeds 96 ℃ during heating, there is a risk of scalding
While the hot pot is on fire, some related news has poured cold water into the hot pot lovers. For example, it was spread on the Internet these two days that Chinese students ate hot pot in American dormitories, which triggered the alarm and suspected that the concentration of carbon monoxide was too high in a short period of time. There have been accidents caused by too high temperature before. In 2015, a passenger on a train from Fuzhou to Nanchang used self heating boxed rice, which suddenly expanded and exploded during heating. In 2017, a consumer placed the self heating hot pot on a 1cm thick glass desktop. During the eating process, the glass desktop under the lunch box broke due to the high temperature.
How high can the temperature be? The reporter of Modern Express bought two brands of self heating hot pot, namely dalongzhu and Xiaozhen, and the self heating rice produced by jiajiahe, and measured them respectively when heating.
On the outer package, the three self heating foods are marked with caution scald at eye-catching position, and the operation steps are attached. According to the instructions, the reporter poured cold water into the lunch box, without heating the bag. The outside of the three heating bags are clearly marked with the words "no eating", and the dragon and Xiaozhen also mark "no heating water".
Then, through the air hole on the cover of the dining box, the reporter inserted the probe of the liquid special thermometer into the water. After adding water for more than ten seconds, the heating bag emits hot air. In less than half a minute, it makes a gurgling sound. Water vapor is continuously ejected from the air hole, and the lunch box is bulging. The thermometer shows that the temperature keeps rising. In less than a minute, it soars from about 40 ℃ to over 90 ℃.
Two minutes later, the internal water temperature of Xiaozhen self heating hot pot was stable at 97.3 ℃, that of jiajiahe self heating rice was stable at 96.2 ℃, and that of dalongsu was 96.5 ℃. At this time, the temperature of the three lids measured by the infrared temperature gun is 93.5 ℃, 95.1 ℃ and 94 ℃, respectively. After 15 minutes, the water vapor from the air hole gradually decreased to no, and then the internal temperature of the lunch box dropped to 95 ℃, 88.6 ℃, 92.8 ℃.
After opening the lid, it was found that the water in the three lunch boxes was gone, and the heating bag became a ball from the original flat state, and it was very hard. During the measurement, Jiahe's cover was impacted by water vapor, making a thumping sound, almost breaking open. The reporter wanted to adjust the lid. He was so hot that he retracted his hand.
No electricity, no fire
How does it get hot?
What's in the heating bag? Why just add cold water to make it hot? No ingredients are marked on the heating bag of three self heating hot pots, so the reporter contacted three manufacturers respectively. They all said that the heating bag was provided by other manufacturers.
The reporter then searched and found that there are many businesses selling hot packets on the Internet. According to a businessman, the ingredients in the heating bag mainly include sodium carbonate, diatomite, iron powder, aluminum powder, coke powder, activated carbon, salt and quicklime. The principle of using quicklime to heat when encountering water is used. The heating bag will make the temperature of water above 90 ℃ until boiling. The temperature of water vapor can reach 110 ℃, and the food can be heated by water vapor.