Product Introduction:

Liquid Carbon dioxide Refers to the process of converting carbon dioxide under high pressure and low temperature. Gas liquefaction In liquid form. Liquid carbon dioxide is a… Refrigerant It can be used to preserve food and also for artificial rainfall. It is also an industrial raw material that can be used to produce… Soda ash 、 Urea And soda.

Physical properties:

Liquid carbon dioxide, with a density of 1.101 g/cm³ at -37°C;

After carbon dioxide dissolves in water, the water… pH value It will decrease and pose a threat to aquatic organisms;

When liquid carbon dioxide evaporates, it absorbs a large amount of heat; when it releases a large amount of heat, it condenses into solid carbon dioxide, commonly known as… Dry ice 。

Chemical properties:

Carbon dioxide has chemically inert properties. Thermal stability Very high (it only decomposes by 1.8% at 2000°C), it is non‑combustible and generally does not support combustion; it belongs to… Acidic oxide …possesses the general properties of acidic oxides, and when it reacts with water, it forms… Carbonic acid So it’s carbonic acid. Anhydride

Application areas:

01 Making Fire Extinguishers

Liquid carbon dioxide plays a crucial role in the manufacture of fire extinguishers. Carbon dioxide itself does not support combustion, and its density is greater than that of air; therefore, when it covers a burning object, it can effectively isolate the object from oxygen in the air, thereby achieving the purpose of extinguishing the fire. In addition, liquid carbon dioxide is in high demand in fields such as fire suppression, casting mold making, and insecticidal fumigation, and its usage is closely linked to the level and pace of regional economic development.

02 Welding

Liquid carbon dioxide boasts unique application value in the field of welding. Its high density and low-temperature properties make it a non-toxic alternative to oxygen welding. Welding with liquid carbon dioxide not only allows operations in confined spaces but also reduces pollution caused by welding-induced overheating, thereby ensuring greater safety and environmental friendliness. In addition, liquid carbon dioxide can protect the arc welding process, effectively preventing oxidation of metal surfaces while increasing welding speed by approximately nine times.

03 Rare Earth Mining and Processing

Liquid carbon dioxide plays a crucial role in rare earth mining and processing. Rare earth elements such as strontium carbonate and barium carbonate have significant industrial applications, and liquid carbon dioxide is often used as an extractant for these rare earth elements. Its chemical properties enable it to efficiently separate and extract rare earth elements from ores, thereby enhancing both extraction efficiency and purity. Moreover, the environmentally friendly nature of liquid carbon dioxide makes it a sustainable processing aid, helping to reduce its impact on the environment.

04 Photosynthesis Occurs

Liquid carbon dioxide plays a crucial role in plant photosynthesis. Photosynthesis is the process by which plants use sunlight, carbon dioxide, and water to synthesize organic compounds and release oxygen. In this process, carbon dioxide is an indispensable raw material—it is absorbed by plants and converted into organic matter, providing them with energy and nutrients. Therefore, liquid carbon dioxide supplies plants with the carbon dioxide they need for photosynthesis, thereby promoting their growth and development.

05 Quick Freezing and Preservation of Food

Liquid carbon dioxide holds tremendous potential in the field of rapid freezing and preservation of food. Although current price factors currently limit its widespread adoption in this sector, as competition in the international food market intensifies, liquid CO2 is expected to see even broader applications in the future. Moreover, the growth in demand for carbon dioxide is closely tied to regional economic development; in China, regions such as the Pearl River Delta, the Yangtze River Delta, and the North China Economic Belt are experiencing particularly rapid increases in demand for liquid CO2.

06 Casting Molding

Liquid carbon dioxide plays a crucial role in the field of casting mold making. This application is closely tied to the level and pace of regional economic development; particularly in China, regions centered on the Pearl River Delta, the Yangtze River Delta, and the North China Economic Belt are witnessing rapidly growing demand for liquid carbon dioxide. This is because liquid carbon dioxide serves as a key component in casting mold making, ensuring that the shape and structure of castings meet expectations and thereby satisfying diverse industrial and manufacturing needs.

07 Insecticide Fumigation

Liquid carbon dioxide is in high demand in the field of insecticidal fumigation. This application is largely attributable to carbon dioxide’s unique properties, which make it an effective insecticide. While the cost of liquid carbon dioxide has somewhat hindered its widespread adoption in food freezing and preservation, its demand for insecticidal fumigation continues to grow, closely tied to the level and pace of regional economic development.

Precautions for Use:

1. Operators must undergo specialized training and strictly comply with… Operating Procedures 。

2. Handle with care during loading and unloading to prevent damage to cylinders and accessories. Equip with… Leak Emergency Response Equipment.

3. Equip with a self‑priming respirator.

4. All packaged gas cylinders are marked with their service life; any cylinder that has reached its expiration date must be sent to the relevant authorities for… Safety Inspection , only then can it continue to be used.

5. Bottled gas Products should be stacked separately during transportation, storage, and use; absolutely prohibited. Combustible gas When stored together with oxidizing gases, keep them away from open flames and heat sources. Avoid exposure to fire, oil, or wax; do not expose them to direct sunlight, drop them heavily, or subject them to impact. It is strictly prohibited to strike an arc or use electric arcs on the cylinder itself; it is strictly prohibited… Rough loading and unloading 。