Carbon dioxide has a very wide range of uses. Carbon dioxide products are mainly extracted and recovered from the process gas of synthetic ammonia to hydrogen, fermentation gas, lime kiln gas, acid neutralization gas, ethylene oxidation side reaction gas and flue gas, etc. The purity of commercial products is not less than 99% (volume) .

Carbon dioxide can be injected into the beverage, increasing the pressure, making the beverage contain air bubbles, and increasing the taste when drinking, such as soda and beer.

Solid carbon dioxide (or dry ice) vaporizes at room temperature and absorbs a lot of heat, so it can be used for rapid food freezing.

Carbon dioxide is heavier than air and does not support combustion, so many fire extinguishers use its properties to extinguish fires by producing carbon dioxide. The carbon dioxide fire extinguisher directly uses liquefied carbon dioxide to put out the fire. In addition to the above characteristics, it has the advantage of not leaving solid residues after the fire is extinguished.

Carbon dioxide can also be used as a shielding gas for welding, which is not as protective as other noble gases (such as argon), but is relatively cheap.

Carbon dioxide lasers are an important industrial laser source.

Carbon dioxide is used in winemaking, and carbon dioxide gas creates an oxygen-deficient environment that helps prevent bacteria from growing in the grapes.

Carbon dioxide controls the pH, carbon dioxide is added to the swimming pool to control the pH, and carbon dioxide is added to keep the pH from rising.

Carbon dioxide can be used in the alkali and sugar industries.

Carbon dioxide can be used as a blowing agent in the plastics industry.

Dry ice can be used for artificial rain, smoke effects on stage, special effects in the food industry, gourmet food, etc.

Dry ice can be used to clean the nuclear industry equipment and the printing industry's plate rollers.

Dry ice can be used in the automotive, ship, aviation, space and electronics industries. The liquid carbon dioxide is transformed into a gas by decompression, and the volume is separated from the fabric, which completely eliminates the complicated post-processing process brought by traditional solvents.

CO2 supercritical extraction technology. The properties of carbon dioxide will change when the temperature is higher than the critical temperature (Tc) of 31 °C and the pressure is higher than the critical pressure (Pc) of 3MPa. Its density is close to that of liquid, its viscosity is close to that of gas, and its diffusion coefficient is 100 times that of liquid. Therefore, it has a strong dissolving ability. It can dissolve a variety of substances and then extract the active ingredients. Using this technology can produce high value-added products, and can extract substances that could not be extracted by chemical methods in the past, and it is cheap and non-toxic., safe and efficient. It is suitable for chemical, pharmaceutical, food and other industries.