High-purity helium‘s high thermal diffusion properties can be used to concentrate and extract helium from natural gas. The diffusion element used is typically a quartz glass capillary. With the development of membrane materials, membrane permeation methods for helium extraction are showing increasing promise. Various high-purity gases have varying permeability to membranes, making it possible to extract helium from natural gas using permeation methods.
Hydrogen, which is difficult to liquefy in natural gas, is concentrated in the crude helium during helium extraction and needs to be removed before refining.
How to better protect remaining helium reserves and continuously discover new high-purity helium pools. We have learned how to recover helium before it escapes into space and have begun research on superconductors capable of operating at higher temperatures.
We also need to find more sources of high-purity helium and develop better recovery methods.
High-purity helium is a colorless, odorless, non-toxic, and non-flammable inert gas. Its atoms are extremely small among all gaseous elements, except for hydrogen.
Helium is seven times lighter than air, travels three times faster than sound, and has five times higher thermal conductivity. High-purity helium has the lowest boiling point of any known material, remaining liquid at zero degrees Celsius.
Helium purification technologies are primarily categorized by high-pressure, low-temperature condensation, adsorption, membrane separation, pressure swing adsorption, and low-temperature condensation adsorption, depending on operating pressure, cooling source, and other conditions.
High-pressure, low-temperature condensation and adsorption are classic, reliable purification technologies with mature processes widely used in the purification of high-purity helium.
Post time: Sep-18-2025