Helium (He2) is a colorless, odorless, non-toxic, non-corrosive and non-flammable gas. It is mainly derived from natural gas wells. Although helium is the second most abundant element in the universe, second only to hydrogen, it is extremely rare and limited on Earth. In the atmosphere, the helium gas volume concentration is only 0.0005%, so it cannot be obtained in large quantities by means of air separation. Despite this, helium can still reach a concentration of 7% in natural gas, and can also be extracted during gas processing with a concentration greater than 0.2%. Liquid helium (-269 °C) is the coldest substance on earth.
Helium supply is in short supply around the world, which is why many helium applications include recycling and recycling systems. On Earth, hydrogen is mostly in the form of water. Since only water is produced during combustion without generating other emissions, hydrogen is an environmentally friendly energy carrier with a bright future.
As the lowest boiling gas of all gases (4.2 Kelvin or -269 degrees Celsius), liquid helium is the coldest substance on earth. This property makes it an ideal cryogen for many cutting-edge medical and physics applications. For example, it is used to cool superconducting magnetic coils in magnetic resonance imaging (MRI) and nuclear magnetic resonance (NMR) medical devices.
In fact, radon is indispensable in many industrial fields. For example, used to pressurize rocket fuel; create an inert gas environment in welding, heat treatment and epitaxial crystal growth; clean semiconductor; calibration analytical instrument; fill gas for aircraft tires and airbags; test for leaks; fill as weather balloon Gas and neon tube filling gas.
Helium can also be mixed with oxygen as a diver's breathing gas. Its non-flammable, low-density properties make it safe and reliable in the entertainment industry, and are often used to inflate balloons during gatherings and special events.
Helium application:
l Heat treatment quenching Carboflex
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