Must it contain water? Some people don't understand the "cleaning" of dry ice cleaning, and think that dry ice cleaning is water washing equipment. So what exactly is dry ice cleaning, and whether it really contains water?

Before thinking about this problem, we can first understand the nature of dry ice. Review the knowledge of junior high school. Dry ice is solid carbon dioxide, which is condensed into colorless liquid under the pressure of 6250.5498 kPa, and then rapidly solidified under low pressure. It is the solid form of carbon dioxide. The temperature is - 78 ℃. Under normal temperature and pressure, solid carbon dioxide will slowly volatilize due to different storage methods. No other chemical reaction will occur during the volatilization process, and it will directly sublimate into gaseous carbon dioxide without liquefaction process, So dry ice itself will not produce water.

So why do you think dry ice cleaning contains water? The reason is very simple, just like we take out a frozen object from the refrigerator and it will soon be filled with many fine droplets. This is also why dry ice cleaning makes people feel watery. The temperature of dry ice - 78 ℃ is very low. Cleaning at normal temperature will rapidly cool down. The water vapor in the air will be liquefied into small water vapor when it gets cold. Therefore, there will be an illusion of water in the cleaning process. In fact, there is no water in the dry ice cleaning process. In addition, the dry ice cleaning process is very fast. The fast-moving dry ice particles act quickly on the surface of the cleaned object. The brittle dirt is removed by purging and stripping, and then sublimated into carbon dioxide gas. After cleaning, the cleaned surface quickly recovers to normal temperature, and the surface is still dry.

Therefore, dry ice cleaning is a dry cleaning process. Compared with high-pressure water, chemical cleaning and other cleaning methods that are easy to cause equipment corrosion and decay, dry ice cleaning is very friendly to the equipment, and will not produce additional pollutants after cleaning. There is no secondary pollution. It is a very environmentally friendly cleaning method

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Xiamen Hefengli Dry Ice Decontamination Equipment Co., Ltd. (hereinafter referred to as Hefengli Dry Ice), founded in 1999, is a Chinese enterprise specializing in dry ice application, forming a complete industrial structure chain of R&D, manufacturing, sales and after-sales. The company's brand is HORECO2, and Fengli has a doctor-level research and development team. Its main products include dry ice granulator&briquetting machine, dry ice cleaning machine, dry ice automatic production line, dry ice intelligent cleaning, supply of various specifications of dry ice, dry ice cleaning services and leasing, dry ice insulation box, dry ice equipment accessories and related intelligent products; It has arranged 18 dry ice manufacturing plants, provided a complete dry ice distribution service network, and provided customers with a cost-effective use experience.