1. Oxygen
Oxygen is one of the earliest industrial gases developed and widely used in various fields of national economy and social development. It is mainly used as a combustion supporting gas for metal welding, cutting, and various combustion devices, as well as an oxidizing gas for certain process flows. The metallurgical industry, including steel smelting and non-ferrous metal smelting processes, extensively uses oxygen, which has a significant effect on strengthening the smelting process and achieving increased production and energy conservation. The application of oxygen in metal welding and cutting in the mechanical industry can greatly improve work efficiency. The chemical industry uses oxygen to manufacture pharmaceuticals, dyes, explosives, and other chemical products. In addition, it is also used to enhance production, such as using oxygen blowing method to produce yellow phosphorus, spraying oxygen to gasify inferior coal, etc. Oxygen is used in the electronic industry not only as a combustion aid gas, but also as an oxidizing gas for manufacturing semiconductor integrated circuits, making it an indispensable high-purity gas in the industry; High purity oxygen is still an important gas raw material for manufacturing optical fibers. Oxygen has a wide range of applications in national defense, with rockets being the most commonly used. In addition, oxygen can be used as an oxidant for magnetohydrodynamic power generation; Using oxygen to purify wastewater and conducting deep well operations in the mining industry; Utilizing oxygen for deep-sea salvage and diving operations; Using oxygen to rescue suffocating and critically ill patients; Utilizing oxygen for healthcare, such as high-altitude mountaineers, geologists, border patrol soldiers, and other special populations, as well as general personnel soaking in oxygen bars.
2. Nitrogen gas
Nitrogen is an inert gas with the highest content in air, accounting for approximately 78%. With the development of science and technology, nitrogen is increasingly widely used in various industries of the national economy. Nitrogen is mainly used as a protective gas, blowing gas, carrier gas, drying gas, etc. In the process of metal heat treatment, nitrogen is used as a protective gas to improve the quality and smoothness of metal materials and parts. High purity nitrogen is an indispensable protective and carrier gas in the production process of semiconductor integrated circuits in the electronics industry. In the petrochemical industry, nitrogen is used as a protective gas and carrier gas to ensure the smooth and safe operation of petrochemical production. Nitrogen is also the main raw material gas for synthetic ammonia production. In the production of float glass in the building materials industry, nitrogen is used as the main protective gas for tin tanks to achieve float glass production process and improve glass quality. In the energy industry, nitrogen is used to enhance mining and coal mine fire extinguishing. The food industry uses nitrogen as a filling gas for food packaging, nitrogen filling for drying, preservation and storage of fruits and vegetables, nitrogen filling and oxygen removal for fruit juice and oil. Liquid nitrogen is used as a refrigerant and as a low-temperature source for medical applications. Nitrogen can also be used in high-tech fields such as rockets, space simulations, atomic reactors, gas lasers, etc.
3. Argon gas
Nitrogen is an inert gas with the highest content in air, accounting for approximately 78%. With the development of science and technology, nitrogen is increasingly widely used in various industries of the national economy. Nitrogen is mainly used as a protective gas, blowing gas, carrier gas, drying gas, etc. In the process of metal heat treatment, nitrogen is used as a protective gas to improve the quality and smoothness of metal materials and parts. High purity nitrogen is an indispensable protective and carrier gas in the production process of semiconductor integrated circuits in the electronics industry. In the petrochemical industry, nitrogen is used as a protective gas and carrier gas to ensure the smooth and safe operation of petrochemical production. Nitrogen is also the main raw material gas for synthetic ammonia production. In the production of float glass in the building materials industry, nitrogen is used as the main protective gas for tin tanks to achieve float glass production process and improve glass quality. In the energy industry, nitrogen is used to enhance mining and coal mine fire extinguishing. The food industry uses nitrogen as a filling gas for food packaging, nitrogen filling for drying, preservation and storage of fruits and vegetables, nitrogen filling and oxygen removal for fruit juice and oil. Liquid nitrogen is used as a refrigerant and as a low-temperature source for medical applications. Nitrogen can also be used in high-tech fields such as rockets, space simulations, atomic reactors, gas lasers, etc.
Argon is a rare and inert gas with high density and low thermal conductivity. Widely used as a protective gas for metal welding, smelting, processing, etc., for filling gas inside light bulbs and various discharge devices, as a carrier gas for gas chromatography analysis, and also for lasers and surgical hemostatic spray guns. Argon can be mixed with various gases to create a more versatile specialty gas.
4. Carbon dioxide
Carbon dioxide has a wide range of applications, second only to oxygen in terms of usage. Carbon dioxide can be used to make carbonated beverages. As a fire extinguishing agent, carbon dioxide is widely used for extinguishing initial fires in electrical equipment, precision instruments, valuable production equipment, and library archives. Carbon dioxide gas shielded welding can be widely used for welding various materials. Carbon dioxide can be used in organic chemical synthesis to produce various commonly used chemical products, such as urea and salicylic acid. Carbon dioxide is used as a refrigerant to freeze food. Low temperature heat source power generation can be carried out using carbon dioxide as a medium. Supercritical extraction can be carried out using carbon dioxide as a solvent, which is an advanced operating technology used to separate multiple products and replace traditional process operations. Solid carbon dioxide (dry ice) is used in medicine to freeze skin diseases and can also be used for artificial rainfall. Using liquid carbon dioxide to dry clean clothes can replace toxic dry cleaners. High purity carbon dioxide is used in the electronics industry, medical research and clinical diagnosis, as calibration gas for testing instruments, and in the preparation of other special mixed gases.
5. Ammonia gas
The industrial production of synthetic ammonia provides sufficient raw materials for the manufacture of various nitrogen fertilizers. Ammonia is also used in the production of various amino and acyl compounds, and the production of explosives also requires a large amount of ammonia. Ammonia is a medium temperature refrigerant suitable for large and medium-sized refrigeration machines, and is the earliest and most widely used refrigerant. Ammonia is also a raw material for industries such as metallurgy and pharmaceuticals.
6. Chlorine gas
Chlorine gas can kill bacteria and is used to purify water quality. It is also used to treat certain industrial wastewater, such as oxidizing hydrogen sulfide, cyanide, etc., to eliminate their toxicity. Chlorine gas can be used to produce a variety of chemical products, such as plastics, pesticides, synthetic fibers, synthetic rubber, etc. It is also used to produce chlorides, hydrochloric acid, and chlorine containing solvents. Chlorine gas can also be used to produce final chlorine free chemical products, such as glycerol, ethylene glycol, etc.
7. Acetylene gas
Acetylene gas is one of the important raw materials for organic synthesis and also one of the monomers for the three major synthetic materials (rubber, plastic, fiber). Used in the pharmaceutical industry to manufacture contraceptive pills. Used as a carrier gas on atomic absorption analyzers. The important uses of dissolved acetylene are metal welding and cutting, spraying, surface quenching, and hot working. In addition, the earliest application of acetylene gas was for lighting, mainly for navigation lights.
8. Hydrogen gas
Hydrogen is used in various industries of the national economy as a protective gas, reactant gas, carrier gas, combustion gas, etc. In the production of petrochemical industry, hydrogen containing gases of different components are used as raw materials for the synthesis of ammonia, methanol, petroleum refining, hydrogenation gas, etc; Raw material gas for organic hydrogenation reaction. In the metallurgical industry, hydrogen is widely used as a reducing gas and protective gas for the production and processing of tungsten, molybdenum, and titanium; Production and rolling of thin steel plates, strip steel bars, and silicon steel sheets; Production of precision alloys and powder metallurgy materials. In the electronics industry, high-purity hydrogen is widely used, mainly for the production of electronic materials, semiconductor integrated circuits, and electric vacuum main devices. In building materials and light industry production, hydrogen is often used as a protective gas and combustion gas. For example, in the production of quartz glass and artificial gemstones, hydrogen oxygen flame is used to obtain high temperature; Hydrogen gas is used as a protective gas in float glass production. Hydrogen is used as a coolant for generator sets in the power industry. Balloons and aviation airbags use hydrogen as the filling gas.