The method of making dry ice is as follows:

(1) Manual preparation of dry ice: carbon dioxide cylinder+small manual dry ice maker

You can get carbon dioxide cylinder by purchasing liquid carbon dioxide at gas operation station, connect it to KBS small dry ice maker, and open the valve to produce dry ice. It is low in cost and simple to operate, and it is very suitable for cloud effect in hotels, restaurants and bars and low-temperature test in laboratory.

(2) Making dry ice at home: carbon dioxide fire extinguisher+cloth bag

Prepare a cloth bag, cover it at the outlet of carbon dioxide fire extinguisher, turn on the switch of the fire extinguisher, and a small amount of white "snowflakes" will be formed in the cloth bag near the nozzle, which is dry ice, but the amount is very small, so it is suitable for teaching classes and learning related knowledge of dry ice.

(3) Fully automatic dry ice preparation: carbon dioxide dewar or storage tank+fully automatic dry ice maker

Buy liquid carbon dioxide dewar or storage tank in the market and liquid carbon dioxide in the gas company, and choose KBM granular dry ice maker or KBK block dry ice maker according to the shape and output requirements of dry ice.

the dry ice produced by this automatic dry ice machine has high density, good quality and large output, and is widely used in catering smoke effect, refrigerated transportation, cooling and fresh-keeping and industrial dry ice cleaning, which is very suitable for merchants selling industrial dry ice production.

characteristics of dry ice:

white fog can be seen when dry ice sublimates. Carbon dioxide can't be seen. In fact, it's not smoke, but fog. When carbon dioxide changes from solid to gas, it absorbs a lot of heat, which makes the temperature of the surrounding air drop quickly, and the air temperature drops. Its solubility in water vapor decreases, and water vapor liquefies. When it releases heat, it becomes small droplets, which is fog.

This has the same meaning as "white fog" on popsicles in summer. They are all water droplets, not other gaseous substances. That is, we see white fog instead of white smoke. The temperature of dry ice is much lower than that of water, so it is equivalent to heating dry ice, which absorbs heat and sublimates, so that the temperature of water is reduced or even frozen.