Liquid carbon dioxide has a wide range of applications and my country’s production ranks among the world’s leaders

Liquid carbon dioxide, also known as dry ice, refers to a chemical substance that liquefies carbon dioxide gas into a liquid form under high-pressure and low-temperature conditions. Liquid carbon dioxide appears as a colorless and transparent liquid. It has the advantages of rapid gasification, rapid penetration, rapid heat absorption, low impurity content, and high purity. It is widely used in food preservation, artificial rainfall, fire extinguishing agents, medicine, oil exploration and other fields.

There are three methods for preparing liquid carbon dioxide: separation method, compression method and absorption method. The separation method refers to using an adsorbent or membrane separator to separate gaseous carbon dioxide, and then cooling it to obtain liquid carbon dioxide; the compression method refers to using a compressor to compress gaseous carbon dioxide, and then cooling it to obtain a liquid product. This method is the mainstream preparation method for liquid carbon dioxide. ; The absorption method refers to using ethanol or water as the absorbent and using chemical reactions to convert gaseous carbon dioxide into liquid products.

According to the “2023-2028 China Liquid Carbon Dioxide Industry Market In-depth Research and Development Prospects Forecast Report released by the Industrial Research Center, in recent years In recent years, with the increasing awareness of global environmental protection, the market demand for liquid carbon dioxide as a green and environmentally friendly industrial raw material has continued to grow, driving its production to continue to increase. In 2022, global liquid carbon dioxide production will reach 41.203 million tons. In terms of the local market, my country’s liquid carbon dioxide production will reach 11.214 million tons in 2022, ranking first in the world. At present, my country’s liquid carbon dioxide companies mainly produce mid-to-low-end products, and high-end products are highly dependent on imports. South Korea and Japan are my country’s main importers of liquid carbon dioxide.

Liquid carbon dioxide has a wide range of applications, including food preservation, artificial rainfall, fire extinguishing agents, medicine, oil extraction, etc. In the field of food preservation, liquid carbon dioxide can be used as a refrigerant to preserve beverages, juices, vegetables and other foods; in the field of fire extinguishing agents, liquid carbon dioxide fire extinguishing agents can be used in electrified fires, gas fires, liquid fires and meltable solid material fires. wait. Benefiting from the accelerated development of downstream industries, my country’s liquid carbon dioxide market demand is increasingly strong, with demand reaching 11.002 million tons in 2022.

The main producers of liquid carbon dioxide in my country include Binglun Environment, Kemet Gas, Hangyang Co., Ltd., Wanxing Chemical, Yuanda Environmental Protection, etc. Wanxing Chemical focuses on the research, development, production and sales of chemical raw materials and chemical products. In September 2022, Wanxing Chemical’s annual output of 220,000 tons of liquid carbon dioxide project was officially put into operation.

Industry analysts said that as an industrial raw material, liquid carbon dioxide has strong market demand and the industry development trend continues to improve. In recent years, with the deepening of environmental protection concepts, the development space of the global liquid carbon dioxide industry has continued to expand. my country is a major producer of liquid carbon dioxide, but its high-end products are highly dependent on imports. It is expected that in the future, with the improvement of the technological innovation level of local enterprises, my country’s liquid carbon dioxide industry will gradually develop in a high-end direction.