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According to national standards, how do we interpret industrial gases?

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How are industrial gases interpreted in national standards? What does it contain? These are the contents to be discussed below. Our profound understanding of these knowledge will enable us to better define industrial gases, so as to clarify our concept, which is beneficial and harmless to us. So why should we not?

In the national standard GB13690-1992, that is, the classification and marking of commonly used dangerous chemicals, industrial gases are usually divided into second types of compressed gases and liquefied gases. Compressed gas means that the gas is pressed into the cylinder after being pressurized or cooled. Liquefied gases refer to gases dissolved in solvents after pressurization and stored in cylinders. Compressed gases include oxygen, nitrogen, argon, hydrogen, and liquefied gases including acetylene.
Industrial gases can be classified into four categories according to their chemical properties. They are highly toxic gases, inflammable gases, combustion supporting gases and non combustible gases. In the national standard GB13690-1992, these four categories are divided into three categories: flammable gases, non combustible gases and toxic gases, including non combustible gases including combustion supporting gases.
The national standard GB16163-1996, which is the classification of compressed gases in bottles, is divided into industrial gases.
Permanent gas: the critical temperature is less than -10 C, filling, storage and transportation and use are gaseous.
Liquefied gas: high pressure liquefied gas and low pressure liquefied gas whose critical temperature is not less than -10 degrees. The maximum critical value of high pressure liquefied gas is 70 degrees C, which is liquid when filling, but when stored and transported, the liquid will become gaseous state with the increase of temperature.
Dissolved acetylene: it is the basis of mixing gas preparation.
Generally speaking, industrial gases are stored in cylinders in the state of compression or liquefaction, but because of certain pressure, if the cylinders are subjected to high temperature or sunlight, or are subjected to great impact or impact, the pressure in the bottle will suddenly increase. Once the pressure range exceeds the pressure range of the container, there will be an explosion, so we must be careful when using it. There is a slightest carelessness in case of danger.
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