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Industry Gases Common Physical Characteristics
Sep 04, 2017

Industry Gases Common physical characteristics

The hazard of non-flammable gases in industrial gases

Gases are characterized by mild and destructive gases, while non-flammable gases in industrial gases are also lethal.

Highly toxic, highly toxic, invading human body can cause poisoning and even death. Such as chlorine, ammonia, etc.

Flammable gas, liquid gas has inflammable and chemical explosion risk, and has certain toxicity. Hydrogen, acetylene, etc.

Combustion gas, which has the ability of combustion, but does not burn itself, there is the danger of expanding fire, such as oxygen. The industrial gas in nanjing is not flammable, it has suffocation, stable property, and does not burn, such as nitrogen, carbon dioxide and argon.

The common physical characteristics of industrial gases can be summarized as: compressibility and expansibility. High purity gases, when a certain amount of gas temperature basic remain unchanged, the greater the pressure for the size becomes smaller, if continue to pressure, gas will be compressed into a liquid, this is the compressibility of the gas. Gas after the light or heat, temperature, molecular thermal motion increases, the volume increase, if in a container, the higher the temperature of the gas is heated, its expansion after the formation of the pressure, the greater the this is gas heat expansion.

There are many kinds of gases in nanjing industrial gas industry, and different chemical properties can be divided into four categories, including highly toxic gases, flammable gases, combustion gases and non-flammable gases.

Highly toxic and highly toxic, invading human body can cause poisoning and even death. Such as chlorine, ammonia, etc.

Flammable gas, flammable and chemical explosion hazard, and a certain toxicity. Hydrogen, acetylene, etc.

It has the ability of combustion and combustion, but it does not burn itself, and there is the danger of expanding fire, such as oxygen.

Gas is not flammable. Industrial gases are suffocation, stable and non-combustible, such as nitrogen, carbon dioxide and argon.

In the national standard gb13690-1992, the above-mentioned four gases are classified into three small classes, namely, the second. Type 1 flammable gas, 2. Non-flammable gases (including combustion gases), 2. Three kinds of poisonous gases.

Industrial gases can be divided into industrial pure gas and dual or multi-gas industrial mixture. National standard "classification of bottled compressed gas (GB16163-1996), according to the industrial pure gas in the physical condition of the cylinders and critical temperature, and according to their chemical properties, combustibility, toxic, corrosive grouping. Category 1 permanent gases, its critical temperature < - 10 ℃, when filling and under the allowed working temperature and use are in the process of gas storage and transportation, divided into two groups: a, b group a non-combustible non-toxic and non-combustible toxic gases (oxygen, nitrogen, argon, etc.), group b for flammable nontoxic and flammable toxic gases (including hydrogen, etc.). Class 2 for liquefied gas, its critical temperature - 10 ℃ or higher, including high pressure liquefied gas and low-pressure liquefied gas. Among them, the liquid gas high pressure liquefied gas p - 10 ℃ and 70 ℃ or less critical temperature, when the filling of liquid, but under the allowed working temperature storage and use process as the temperature rises to critical temperature is evaporated into gas, can be divided into three groups: a, b, c for group a non-combustible non-toxic and non-combustible toxic gases (including carbon dioxide); Group b is non-toxic and spontaneous combustion of toxic gases; Group c is a combustible gas that can be easily decomposed or polymerized.