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Clean and efficient gas fire extinguishing agent composition

A gas fire-extinguishing agent and technology of fire-extinguishing agent, which is applied in fire prevention equipment and other directions, can solve the problems of large storage volume of inert gas medium, limiting the use range of inert gas fire-extinguishing agent, and high boiling point of fire-extinguishing agent, so as to reduce the potential value of greenhouse effect and produce Low cost and no corrosion of equipment

Inactive Publication Date: 2017-09-29
JIUJIANG CSSC CHEM TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, HFCs and PFCs are difficult to decompose in the atmosphere, the value of the greenhouse effect is high, and the fire extinguishing concentration is about 7-10%, which is much higher than the 3.5% of "halon" 1301, and during the release process, most of the HFCs fire extinguishing The agent has a high boiling point and poor fluidity, and it needs to be driven by high-pressure gas during use
Although the inert gas fire extinguishing medium is a natural gas, it is clean, pollution-free and has good release performance during the fire extinguishing process, but the inert gas mainly relies on cooling and diluting the oxygen concentration to achieve the purpose of fire extinguishing, and the fire extinguishing concentration is as high as 30-50%, so the storage of inert gas medium occupies Large volume, which limits the range of use of inert gas fire extinguishing agents

Method used

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  • Clean and efficient gas fire extinguishing agent composition
  • Clean and efficient gas fire extinguishing agent composition
  • Clean and efficient gas fire extinguishing agent composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The composition of the composite gas fire extinguishing agent raw material of the present embodiment is: BTP+heptafluoropropane

[0027] 1. Test of fire extinguishing effect

[0028] 1.1 Experimental equipment:

[0029] test platform such as figure 1 As shown, the main components include a cup burner, a fuel supply device, a fire extinguishing medium supply device and various measurement and control devices. The combustion cup of the cup burner is cylindrical, the material is heat-resistant glass, the outer diameter is 30mm, the wall thickness is 1.5mm, the edge chamfer of the top of the cup is 45°, and thermocouples are installed in the cup and the mixing chamber respectively. Thermocouple 1 can measure the temperature of the mixing chamber, thermocouple 2 is used to measure the temperature of the gas in the cup burner, and thermocouple 3 is used to measure the outer flame temperature of the fuel combustion flame. There is a fuel inlet near the bottom of the burner,...

Embodiment 2

[0041] The raw material ratio of the composite gas fire extinguishing agent of this embodiment is: pentafluoroethane+BTP

[0042] 1. Test of fire extinguishing effect:

[0043] Change the gaseous fire extinguishing agent in the test example into pentafluoroethane, and measure the fire extinguishing concentration of the gaseous fire extinguishing agent of embodiment 2 with the same equipment and operation steps of the test example 1.

[0044]

[0045] It can be seen from the experimental results that when 90% pentafluoroethane is mixed with 10% BTP to extinguish the fire, the theoretical calculation value of the fire extinguishing concentration without considering the synergy is 7.05%, while the experimentally measured fire extinguishing concentration is only 5.6%. This proves that the composite fire extinguishing medium formed by pentafluoroethane and BTP shows a good positive and synergistic fire extinguishing effect.

Embodiment 3

[0047] The raw material ratio of the composite gas fire extinguishing agent of this embodiment is: 1,1,2,2,3,3,4-heptafluorocyclopentane+BTP

[0048] 1. Test of fire extinguishing effect:

[0049] Change the gas fire extinguishing agent in the test example into 1,1,2,2,3,3,4-heptafluorocyclopentane, with the same equipment and operation steps of test example 1, measure the gas fire extinguishing agent of embodiment 4 Extinguishing concentration.

[0050]

[0051] It can be seen from the experimental results that when 90% of 1,1,2,2,3,3,4-heptafluorocyclopentane is mixed with 10% of BTP to extinguish the fire, the theoretical calculation value of the fire extinguishing concentration under the synergy is not considered It is 6.87%, while the experimentally measured fire extinguishing concentration is only 5.6%. This proves that the composite fire extinguishing medium formed by 1,1,2,2,3,3,4-heptafluorocyclopentane and BTP shows a good positive and synergistic fire extinguis...

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Abstract

A clean and efficient gas fire extinguishing agent composition comprises, with the molar volume as the benchmark, 5%-15% of 2-bromine-3,3,3-trifluoropropene (BTP) and 95%-85% of a hydrofluoroalkane fire extinguishing agent or an inert gas fire extinguishing agent. The hydrofluoroalkane fire extinguishing agent comprises one or more of heptafluoropropane, pentafluoroethane, trifluoromethane and 1,1,2,2,3,3,4-heptafluorocyclopentane. The inert gas fire extinguishing agent comprises one or more of nitrogen and carbon dioxide. By the adoption of the gas fire extinguishing agent composition, the fire extinguishing concentration of inert gas can be increased, the storage capacity is reduced, the global warming potential of hydrofluoroalkane is lowered, the environment is improved, the fire extinguishing effect is enhanced, the property is stable, no precipitation is generated after long-time storage, the raw materials are obtained easily, and the production cost is low.

Description

technical field [0001] The invention relates to a clean and efficient gas fire extinguishing agent composition. Background technique [0002] "Halon" fire extinguishing medium has been widely used in industrial production, civil construction and other fields due to its advantages of high fire extinguishing efficiency, stable chemical properties and good electrical insulation performance. However, in the 1980s, environmental scientists discovered a hole in the ozone layer over Antarctica, and "halon" molecules were one of the culprits causing the hole in the ozone layer. In order to protect the ozone layer of the atmosphere, the United Nations has adopted a series of conventions to strictly restrict the production and use of "halon" fire extinguishing agents, and has established a clear phase-out schedule. Therefore, it has become a hot issue in the field of fire protection to find a new generation of "halon" substitute products that are highly efficient and environmentally ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A62D1/00
CPCA62D1/0092
Inventor 韩亚军汤文军柳金玉黄志翔张兰兰
Owner JIUJIANG CSSC CHEM TECH
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