-
E-mail
18001644061@163.com
-
Phone
18001644061
-
Address
Room 423, Haikuo Industrial Park, 2312 Weiqing East Road, Jinshan District, Shanghai
Shanghai Pu Li Gas Technology Co., Ltd
Detailed introduction to the production process of 6N grade ultra pure gas
Date: 2025-06-15Read: 1
6N "is a representation of gas purity, where N represents the order of magnitude of purity. The purity of 6N grade ultra pure gas is 99.9999%, which means the content of impurities in the gas is very small, only one millionth. Compared with ordinary gases, it contains almost no impurities and therefore plays an irreplaceable role in many fields that require high gas purity.
In actual production, gas purity is generally divided into multiple levels, such as 3N (99.9%), 4N (99.99%), 5N (99.999%), and 6N (99.9999%). Ultra pure gases are usually treated with high-precision purification processes to remove impurities such as moisture, oxygen, nitrogen, helium, and carbon dioxide from the gas, achieving a very high level of purity.
6N grade ultra pure gasCharacteristics:
1. High purity: The purity can reach over 99.9999%. The impurity content in gases is usually less than one millionth, so its application in laboratories and high-tech production is particularly important.
2. Low impurities: For ultra pure gases, impurities usually include water, oxygen, nitrogen, carbon dioxide, etc., which may have adverse effects on chemical reactions and equipment operation. Therefore, the production process needs to be strictly controlled to ensure that the content of impurities is far below the allowable standards.
3. High stability: With high stability, it will not undergo chemical reactions or precipitate in a short period of time, making it suitable for applications that require strict gas properties.
4. Fine control: Special gas purification equipment and techniques are usually used for preparation, such as molecular sieve adsorption, low-temperature condensation, chemical adsorption, etc., to precisely control the content and distribution of impurities in the gas.
Production process of 6N grade ultra pure gas:
1. Gas separation and purification technology:
-Molecular sieve adsorption method: using molecular sieves to adsorb and remove impurities such as water, ammonia, and carbon dioxide from gases. Molecular sieves can selectively adsorb certain molecules, which can effectively remove specific impurities from gases.
-Low temperature condensation method: By cooling the gas to an extremely low temperature, the liquid components in the gas are condensed and separated, thereby removing substances such as water, ammonia, and carbon dioxide.
-Chemical adsorption method: using certain specific chemical substances to adsorb impurities in gases, such as using adsorbents such as alumina and activated carbon to remove moisture and harmful substances from gases.
2. Gas filtration and precision purification equipment: In the production process of ultra pure gases, efficient gas filtration systems such as micron and nanometer level filters are also required to remove residual small particles.
3. Ultra high purity gas storage and transportation technology: It is necessary to store and transport under strict conditions to avoid pollution. Usually, steel cylinders or gas storage tanks made of special materials are used, and low leakage pipelines and valves are used for transportation.
4. Online detection and quality control: In the production process of gas, the impurity content in the gas is monitored in real time to ensure that the purity of the gas meets the standards. High precision detection instruments such as gas chromatographs, mass spectrometers, etc. are used for online monitoring.