Krypton gas is a colorless, odorless, tasteless inert gas that weighs about twice as much as air. Very inert, not combustible or combustible. The amount of krypton gas in the air is very small, only 1.14ml of krypton gas per 1m3 of air.

At present, there are mainly several ways to produce krypton gas:

1. Extraction of krypton from ammonia exhaust gas Krypton and xenon mixture produced by argon extraction process of ammonia exhaust gas, and then 99% krypton gas can be prepared by distillation, washing, oxygen removal, adsorption and desorption.

2. Air separation method, from the air separation device to extract krypton, xenon mixture. After extraction of poor krypton, removal of hydrocarbons and carbon dioxide, and separation, 99.99% pure krypton was prepared.

3. Extract krypton from nuclear reactor fission gas and make comprehensive use of radioactive Kr85 from nuclear reactor fission waste gas.

4. The industrial realization of Freon solvent absorption method.

5. Industrial fractionation of liquid air.

Industrial application of krypton gas

Krypton gas has important applications in electric light sources, such as filling advanced electronic tubes and continuous ultraviolet lamps for laboratory use. Krypton gas lamp not only saves electricity, has long life, high luminous rate and small volume, but also is an important light source in the mine. Not only that, krypton can be made into atomic lights that don't need electricity. Due to the high transmittance of krypton gas lamp, it can also be used as a light for off-road vehicles and runway lights in the field. Krypton gas is also often used in high pressure mercury lamp, sodium lamp, flash lamp, voltage tube, etc.

Krypton gas is also widely used in medical treatment and scientific research. Krypton's radioactive isotope can be used as a tracer in medical applications. Krypton gas can be used in gas lasers and plasma streams, as well as to fill free chambers to measure altitude rays and as a shading material for X-ray work.