High Purity Oxygen Gas

Oxygen is a simple substance formed by oxygen element. Its chemical formula is O2. Its chemical property is relatively active, and it can react with oxygen with most elements. It is not very active at room temperature and is not easy to interact with many substances. However, it is very active at high temperature and can directly combine with many elements, which is related to the electronegativity of oxygen atom, which is only second to fluorine.

Oxygen is a colorless and tasteless gas, which is the most common single substance form of oxygen element. Melting point - 218.4 ℃, boiling point - 183 ℃. It is insoluble in water, and about 30mL oxygen is dissolved in 1L water. Oxygen accounts for about 21% of the air. Liquid oxygen is sky blue. The solid oxygen is blue crystal.

Oxygen is the most widely distributed element in nature, accounting for 48.6% of the mass of the crust. It is the most abundant element. Oxygen is required for hydrocarbon oxidation, wastewater treatment, rocket propellant, and animal and human respiration in aviation, aerospace and diving. Animal respiration, combustion and all oxidation processes (including the decay of organic compounds) consume oxygen. But the oxygen in the air can be continuously supplemented through photosynthesis of plants. In metal cutting and welding. Oxygen with a purity of 93.5%~99.2% is mixed with combustible gas (such as acetylene) to produce a flame with extremely high temperature, thus melting the metal. The metallurgical process is inseparable from oxygen. Oxygen is also needed to strengthen the production process of nitric acid and sulfuric acid. The mixture of oxygen and water vapor is blown into the gas gasifier without air, and the gas with high calorific value can be obtained. Medical gas is extremely important.

Oxygen usage: smelting process: high purity oxygen is blown during steelmaking, and oxygen reacts with carbon and phosphorus, sulfur, silicon, etc., which not only reduces the carbon content of steel, but also helps to remove phosphorus, sulfur, silicon and other impurities. Moreover, the heat generated in the oxidation process is enough to maintain the temperature required for steelmaking. Therefore, oxygen blowing not only shortens the smelting time, but also improves the quality of steel. In blast furnace ironmaking, increasing oxygen concentration in blast can reduce coke ratio and increase output. In nonferrous metal smelting, oxygen enrichment can also shorten smelting time and increase output.

Chemical industry: During the production of synthetic ammonia, oxygen is mainly used for the oxidation of feed gas to strengthen the process and increase the fertilizer output. Another example is the high-temperature cracking of heavy oil and the gasification of pulverized coal.

National defense industry: liquid oxygen is the best combustion supporting agent for modern rockets, and it is also needed as an oxidant in supersonic aircraft. Flammable materials impregnated with liquid oxygen have strong explosiveness, and can be used to make liquid oxygen explosives.

Medical care: respiratory supply: used in anoxic, hypoxic or anaerobic environments, such as diving, mountaineering, high-altitude flight, space navigation, medical rescue, etc.

Other aspects: It is used together with acetylene, propane and other combustible gases as a combustion supporting agent to achieve the role of welding and cutting metal. It is widely used in all walks of life, especially in machinery enterprises, and it is also convenient for cutting. It is the preferred cutting method.

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