How do you make nitrogen?

Answer 1

The atmosphere of our planet is composed mostly of nitrogen, therefore nitrogen is readily available and doesn't have to be made. This is a bit like asking "how do you make water?" It's possible to make water - most forms of combustion produce at least some water vapor as a by-produc t - but it is never necessary to do so. It's much easier to use the water that we already have. But then, suppose you need pure nitrogen, 100% nitrogen, not air. Nitrogen can be separated out from air by a process of fractional distillation. Liquify the air (at very low temperatures) and the various components can be boiled off at different temperatures.

Answer 2

Nitrogen gas is transported in 'bulk' as a liquid (LIN) in cryogenic road tankers, the liquid is then transfered into large cryogenic storage tanks on the customers site, smaller amounts of liquid can be moved in Minitanks or Dewar's. Nitrogen is also transported as a gas in high pressure cylinders, typically 200 bar pressure, however modern cylinders can now be filled to 300 bar (in the UK at least).

Answer 3

Nitrogen is typically obtained by fractional distillation of liquid air, which separates nitrogen from oxygen, argon, and other gases. Alternatively, nitrogen can also be produced by the process of pressure swing adsorption, which involves selectively adsorbing nitrogen gas molecules. Additionally, certain industrial processes such as the Haber-Bosch process can be used to convert atmospheric nitrogen into ammonia, which can then be further processed to obtain pure nitrogen gas.

Answer 4

You get it every time you take a breath even though you don't need it to survive.