Oxygen is an indispensable gas in our life. Whether it is for breathing or industrial use, what is the difference between industrial oxygen and medical gas?

Industrial oxygen generally only requires oxygen purity, and has no special requirements for other sanitary conditions. At the same time, it also contains harmful gases such as carbon monoxide and methane that exceed the standard, and the content of water, bacteria and dust is also high. Industrial oxygen is mainly used for welding, gas welding, gas cutting, etc.

The biggest difference between medical oxygen and industrial oxygen is the control of moisture in oxygen. We often have such experience in our life. After the surface is smooth and clean, the iron without rust will not rust if it is left in the open for a long time, but it will rust after a heavy rain. This is because oxygen oxidizes a large number of iron molecules in the presence of water. And after iron oxidation, not only rust but also hydrogen and other harmful gases will be discharged. Iron is oxidized to form rust, which is loose and easy to form small particles mixed with oxygen. Inhalation by the patient may cause respiratory tract injury such as infection. Therefore, it is extremely important to minimize the moisture content in oxygen in medical oxygen production.

Industrial oxygen is a gas used for industrial production and product processing. It is generally required to be qualified if the purity is above 99% due to low quality requirements. The filling procedure is not as strict as that of medical oxygen. There is often water and other impurities mixed in and left in the cylinder oxygen cylinder. The water mixed in and left in the cylinder will lead to corrosion of the inner wall of the oxygen cylinder, thus making the gas in the cylinder have a peculiar smell.

The smelling method is not very effective for the industrial oxygen filled with new oxygen cylinders, because when the oxygen cylinders filled with medical oxygen and the oxygen cylinders filled with industrial oxygen are used at the beginning, it is difficult to find the difference through human olfaction. However, as time goes on, the rust in the industrial oxygen cylinders gradually deepens. Turn on the switch of the oxygen cylinder slightly (the switch cannot be turned on too much), and you can smell strong sulfur, water rust Or sour, probably not medical oxygen. Since there is a rubber seal ring in the valve body of the oxygen cylinder, it is normal for individual oxygen cylinders to smell rubber.