What Is Halon Gas?
The so-called halon (transliteration of Halon) is the trade name of 1211 and 1301 that we usually say. It belongs to a class of chemicals called haloalkanes , which are mainly used as fire extinguishing agents.
Halon
Right!
- Chinese name
- Halon
- Foreign name
- Halon
- Mainly used
- Fire extinguishing agent
- Nature
- A class of chemicals called haloalkanes
- The so-called halon (transliteration of Halon) is the trade name of 1211 and 1301 that we usually say. It belongs to a class of chemicals called haloalkanes , which are mainly used as fire extinguishing agents.
- It achieves the purpose of extinguishing fire by destroying the complicated chemical chain reaction of combustion or explosion. Halon fire extinguishing agents widely used in the fire protection industry are ozone depleting substances. When people use a halon fire extinguisher to extinguish a fire or train, halon gas is naturally emitted into the atmosphere. Halons contain chlorine and bromine. After being radiated by sunlight in the atmosphere, halon decomposes free radicals of chlorine and bromine. These chemically active groups combine with ozone to deprive an oxygen atom in the ozone molecule and trigger a destructive chain reaction. The ozone is destroyed, thereby reducing the ozone concentration and creating an ozone hole. Halon's survival life in the atmosphere is as long as several decades, and its damage to the ozone layer in the stratosphere will last for decades or even longer. Therefore, halon's destructive effect on the ozone layer is huge. Scientific research proves that halon is one of the main culprits in destroying the ozone layer. Halon also refers to polytetrafluoroethylene. Some people think that Freon-11 (foaming agent of foam plastic and turbine refrigeration is the same as the internationally banned Freon, and also the refrigerant used for PTFE machine) ODP4 is 1.0, so ODP ethylene. In fact, this is a misunderstanding. In fact, Halon is disabled. Values are relative values based on Freon-11.
- Halon's ozone-depleting capacity is 3 to 10 times greater than that of chlorofluorocarbons, causing a greenhouse effect and a greater effect on climate warming. According to surveys, more than 100,000 tons of halon 1211 and 50,000 tons of halon 1301 have been discharged into the atmosphere from 1960 to 1990. For this reason, three types of halon (that is, the above three types) of the controlled substances stipulated in the Montreal Protocol formulated in 1987 are included in the target of production and consumption restriction in each signatory country. Global production of Halon 1211 and Halon 1301 peaked in 1988 and are currently declining. Halon 2402 has ceased production. Now working on alternatives, including water, carbon dioxide, foam or dry powder based products to replace the original halon series.
List of China's Controlled Ozone Depleting Substances ( Announcement No. 72 of 2010 by the Ministry of Environmental Protection, the National Development and Reform Commission, the Ministry of Industry and Information Technology )
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