How to make oxygen from air ? / How to produce oxygen naturally ? - Time Zero

 How to make oxygen from air ? / How to produce oxygen naturally ? / How is oxygen produced industrially ?

            

            

            Oxygen is always preferable to being produced from the atmospheric air because it is a much cheaper and safer method.

                        Atmospheric air is a mixture of Nitrogen (78.7%), Oxygen (21%), and Organic Elements (0.3%)

Boiling point of Nitrogen =   -195.8 °C

Boiling point of Oxygen =   -183 °C

Boiling point of Organic Elements =   -185.7 °C

Process of making Oxygen:

            Cool the atmospheric air up to -220 °C so it will be converted into liquid air. Now, that liquid air slowly goes up to the temperature -195 °C. During this process, the nitrogen from liquid air will evaporate. Then again, heat that remaining liquid air up to the temperature -185 °C, So In this process, the remaining organic elements from liquid air will evaporate and we will get the remaining Liquid Oxygen (O2).

            Oxygen is always preferable to be stored in the form of liquid because the specific volume of liquid oxygen is very much less than the specific volume of gases oxygen.

            According to Gas Laws, as the pressure of a substance increases, the boiling point temperature also increases. Therefore, the oxygen is pressurized to 120 ksc (kilogram per square centimeter). The boiling point of Oxygen will be about 40 °C to 45 °C, Therefore, liquid oxygen can be stored at room temperature very easily without any refrigeration system.

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