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Fire-extinguishing agent for sodium fire

A fire extinguishing agent and exergy technology, applied in fire protection equipment and other directions, can solve problems such as easy sinking to the bottom

Active Publication Date: 2008-12-31
CHINA INSTITUTE OF ATOMIC ENERGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the specific gravity of sand and table salt is heavier than that of alkali metal, it is easy to sink to the bottom, so that high-temperature sodium is re-exposed to the air to cause secondary combustion, so it is not very ideal for extinguishing alkali metal fires such as sodium fire.

Method used

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Embodiment

[0014] The fire extinguishing agent used for this sodium fire uses graphite as the base material, a kind of graphite material after acidification treatment, the preferred values ​​adopted in the present invention are: C content is 99.5%, sulfur content is 0.02%, and moisture content is 0.45%. , nitrogen content 0.02%, chlorine content 0.01%, bulk density 0.620g / cm 3 Among them, the particle size is 50 mesh, the oversize is 85%, the pH value is 5, the volatile matter is 9%, and the ash content is 6%.

[0015] The content of each component in the fire extinguishing agent can also be: C content between 98.9-99.9%, sulfur content 0-0.03%, water content 0.1-1%, nitrogen content 0-0.04%, chlorine content 0-0.03%, Bulk density is 0.120~0.820g / cm 3 Among them, the particle size is 32-80 mesh, the oversize is ≥80%, the pH value is between 3-7, the volatile content is ≤10%, and the ash content is ≤10%.

[0016] The bulk density of the fire extinguishing agent is highly variable, at (0...

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Abstract

The invention belongs to the fire-fighting field, which particularly relates to an extinguishing agent for anti-sodium fire. The extinguishing agent contains the following materials with the contents: 98.9 to 99.9% of C, 0 to 0.03% of sulfur, 0.1 to 1% of moisture, 0 to 0.04% of nitrogen, chlorine c; the volume density of the extinguishing agent is among 0.120 to 0.820g / cm<3>, the grain diameter is 32 to 80 meshes, the oversize material is larger or equal to 80 percent, pH value is among 3 to 7, the fugitive constituent is smaller or equal to 10 percent, and the ash is smaller or equal to 10 percent. The extinguishing agent provides the extinguishing agent which has the sodium with fast anti-sodium fire speed, high inflation rate, and no-pollution consumption and can be filled into a special fire extinguisher, is easy to recycle and environmental friendly and can not generate harmful gases.

Description

technical field [0001] The invention belongs to the field of fire protection, and in particular relates to a fire extinguishing agent for sodium fire. Background technique [0002] Sodium is a very active metal element. It is easy to burn in the air and has a great fire hazard. The flame of sodium fire is very low, and there is white smoke, which is sodium aerosol. This aerosol has strong alkali It has severe burning ability to the skin of humans and animals, especially to the eyes and respiratory system. Therefore, need a kind of fire extinguishing agent that efficient sodium fire is used, and make this fire extinguishing agent can be sprayed by special fire extinguisher or special fixture. [0003] The characteristics of sodium fire are: burning on the surface, generating a large amount of heat, and producing a large amount of dense smoke, which makes it difficult for personnel to extinguish the fire at close range. Moreover, the fire has a strong regeneration ability, is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A62D1/00
Inventor 杜海鸥申凤阳洪顺章
Owner CHINA INSTITUTE OF ATOMIC ENERGY
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