How is liquid nitrogen produced?

Answer 1

Nitrogen is commercially produced by liquefying air and then fractionally distilling it to separate the nitrogen, oxygen and argon, the principal components of air. The boiling point of these are:

Nitrogen -195.8C
Argon -186.7C
Oxygen -183.0C

Merely liquefying air by cooling would first produce oxygen, then argon and finally nitrogen. So, one could not produce nitrogen this way. It is necessary to distill nitrogen from liquid air. Since nitrogen would boil first from such a mixture this is not difficult to do. Once recovered in a pure enough grade it can be reliquified to produce liquid nitrogen.

Answer 2

Liquid nitrogen (liquid density at the triple point is 0.807 g/mL)is produced industrially in large quantities by fractional distillation of liquid air and is often referred to by the quasi-formula LN2 (but is more accurately written N2(l) ). Molecular nitrogen condenses at 77 K

Answer 3

2 shrink T, boost P in certainty the approach to do such ought to contain compressing the air to an exceedingly extreme stress. the potential of compression additionally will boost the temperature. you're able to enable the nice and comfortable compress air to chill to ambient temperature (or chillier if their is a cooler source) enable the gas to pass via an orifice (unfastened enlargement) without permitting it to take up greater warmth potential. various the gas will liquifey. the rest could properly be the two recompressed with the aid of yet another cycle or used as a coolant for the compression cycle. The compression can pass via levels permitting cooling between levels. this could help performance.

Answer 4

You know I for one really don't know but the meth labs are going to have to learn how to produce their own anhydrous ammonia because the college of Illinois has figured out how to mix calcium chloride into it so it becomes neutralized when cooked and that should stop the meth labs. Yea right! What the meth producers are stupid? I doubt it! Any how I don't know but good luck.

Answer 5

It is created by refrigerating air until the nitrogen liquifies.