Fullcryo Rare Gas Neon-helium Refining Equipment

Extraction Methods: The extraction methods for neon and helium include absorption methods, low-temperature condensation methods, synthetic ammonia methods, and air methods, etc. The absorption method utilizes the low boiling point of helium gas to separate other components in natural gas through an absorption solvent. The low-temperature condensation method is currently widely adopted, which concentrates and pre-separates neon-helium gas through low temperatures.

Process Flow: The process flow of neon-helium extraction equipment usually includes sub-process modules such as oxygen addition for hydrogen removal, low-temperature nitrogen removal, and low-temperature separation. First, raw gas containing neon and helium is extracted from the distillation tower of the air separation equipment, then oxygen is added for hydrogen removal, cooled and separated for dehydration, and pressurized for drying treatment to deeply remove impurities such as oxygen, hydrogen, and carbon monoxide. Next, most of the nitrogen is condensed and separated under negative pressure liquid nitrogen temperature, and the remaining nitrogen is removed by low-temperature activated carbon adsorption to obtain a high-purity neon-helium mixed gas. Finally, fractional distillation is carried out at extremely low temperatures to obtain neon and helium with extremely high purity.

Equipment Composition: Neon-helium refining equipment usually includes oxygen addition for hydrogen removal systems, nitrogen removal systems, neon-helium separation systems, neon removal systems, gas recovery, vacuum pumping systems, and other modules. These systems work together to ensure the efficient extraction of high-purity neon and helium from raw gas.

Technical Breakthroughs: In recent years, domestic achievements in neon-helium refining equipment and technology have been significant. For example, the neon-helium refining equipment invested and built by Anhui Fullcryo （Haohai） Gas Technology Co., Ltd., a subsidiary of Fullcryo, has been successfully started up at once, with helium purity of 99.9999% and neon purity of 99.9999%, both higher than the design values, and the equipment and operating conditions are currently stable. This marks the domestic breakthrough in the field of neon-helium refining, breaking the foreign technical monopoly and is expected to reduce the dependence on imported high-purity electronic gases.

Application Fields: Neon and helium have important applications in multiple fields due to their unique properties. Helium gas is mainly used in low-temperature superconductivity, optical fibers, semiconductors, and nuclear magnetic resonance, etc.; Neon gas is mainly used in low-temperature refrigeration, electric light sources, and detection gases.