Why can carbon dioxide small cylinder ensure extremely high gas purity through precision technology?
Publish Time: 2024-12-11
In the industrial field, the purity of the gas contained in carbon dioxide small cylinder is crucial for many applications, and the precision technology behind it is the key to achieving high-purity gas guarantee.
First of all, the selection and pretreatment of raw materials are the basic links. The raw gas used to fill carbon dioxide small cylinder usually comes from professional gas production facilities. At the source, the raw materials will be strictly screened to remove possible impurity gases, such as acidic gases such as hydrogen sulfide and sulfur dioxide, and organic impurities such as hydrocarbons. Through advanced adsorption, distillation and other technologies, the impurity content in the raw gas is reduced to an extremely low level, laying a good foundation for the subsequent filling into small bottles. For example, the use of molecular sieve adsorbents can accurately adsorb trace moisture and other small molecular impurities in the raw gas, ensuring that the carbon dioxide raw gas entering the filling process has a high initial purity.
Secondly, precision control during the filling process is indispensable. The filling of carbon dioxide small cylinder is not a simple gas filling, but a process that requires precise control. The filling equipment is equipped with high-precision pressure sensors and mass flow meters, which can monitor and control the filling pressure and gas quality in real time. During filling, the operation is strictly carried out according to the predetermined pressure-quality curve to ensure that each bottle of carbon dioxide small cylinder is filled to the precise pressure and quality range, avoiding the influence of gas purity due to overfilling or underfilling. At the same time, the filling environment is also strictly controlled to maintain dust-free and dry conditions to prevent external impurities from mixing into the gas being filled. For example, a closed filling system is used, and the system is vacuumed several times before filling to remove the residual air and impurities in the system, so as to ensure that the purity of carbon dioxide gas is not polluted during the filling process.
In addition, the sealing and post-processing process of the small bottle is extremely critical. After filling, the valve and bottle seal of the carbon dioxide small cylinder need to be specially treated. The valve adopts high-quality sealing materials and precise sealing structure to ensure that the gas will not leak and foreign impurities will not invade in the opposite direction during storage and transportation. At the same time, the small cylinder is subjected to appearance inspection and pressure stability test. Through these post-processing procedures, the purity of the gas in the cylinder is further ensured to be maintained at a very high level throughout the entire life cycle. For example, the sealing performance of the small cylinder is tested using a helium mass spectrometer leak detector. This high-precision testing equipment can detect extremely small leaks, ensuring the sealing integrity of the carbon dioxide small cylinder, so that the high-purity carbon dioxide gas in the bottle can be properly stored and transported, meeting the strict requirements for the purity of carbon dioxide gas in industrial production.
