Oxygen in large quantities is most often made by
the distillation of liquid air. Air has a boiling point (bp) of approximately
-215oC. The boiling points of its components are: 78% Nitrogen -196oC;
21% Oxygen -183oC; 1% Argon -186oC; and a few lesser
quantities of other materials.
Air is cooled to a temp of less than -215oC
and it forms a liquid. This liquid is then slowly warmed. As the temperature
rises each component evaporates at its boiling point and is collected in a
separate container. These processing facilities are usually located near large users of Oxygen, such as steel plants.. Distillation is usually the process of separating
components by temperature regulation.
Can not give any other answers if I don't know
what your questions are. I've got the answers but you have to have the
questions for me to know what answer to give you......
Good Luck, Old Salt.
__________________
Any day on the green side of the grass is a GREAT DAY!, --- me +++++++++. I believe creativity is an inherent part of everyone. --- Kermit T. Frog
That;s the way Airco (I think, so many of them that I don't remember one from the other) used to do it when I was involved with those gases. At least that's what they told me during a plant tour.
Good Luck, Old Salt
__________________
Any day on the green side of the grass is a GREAT DAY!, --- me +++++++++. I believe creativity is an inherent part of everyone. --- Kermit T. Frog
Seems like it would be more energy efficient to chill the air down to -183 to condense the Oxygen out of the air first, then you don't have to condense the Nitrogen and Argon to liquid. Anyone know why that isn't done?