Use of high purity gas and modern purification technology

- Jun 18, 2019-

In the process of using high-purity gas, it usually refers to a gas that can achieve a certain level of purity by using modern purification technology. When used, high-purity gas has different purity indexes for different types of gases, for example, nitrogen, hydrogen, argon, helium. In general, it refers to a high purity gas with a purity equal to or higher than 99.999%, and for oxygen, a purity of 99.99% can be called high purity oxygen, and for a hydrocarbon, a purity of 99.99% can be considered as a high purity gas. .

High-purity gases are used in a wide range of applications. In the semiconductor industry, high-purity nitrogen, hydrogen, argon, and helium can be used as carrier gas and shielding gas. High-purity gas can be used as a base gas for formulating a mixture. High-purity gases can be classified into organic high-purity gases and inorganic high-purity gases depending on the molecular structure.

Use of common high purity gases

1. Ethylene oxide can be used as a plasticizer, lubricant, etc.;

2. Chloroform is an important methylating agent, and can also be used as a refrigerant, a foaming agent, etc.;

3. Ethyl chloride can be used as an aerosol, a refrigerant, a gasoline anti-shock agent, a local anesthetic;

4. Dimethyl ether can be used as jet propellant, refrigerant, anesthetic; methyl mercaptan is used in synthetic dyes, medicines, pesticides;

5. Acetylene can be directly used for metal cutting and welding, atomic absorption; vinyl acetylene is mainly used as raw material for neoprene rubber,