Extinguishing agent

A fire extinguishing agent and particle technology, applied in fire prevention equipment and other directions, can solve the problems of secondary loss in the lower area, reduce the fire extinguishing effect, lose the fire extinguishing effect, etc., and achieve the effect of reducing the dosage, overcoming the secondary loss, and high fire extinguishing efficiency.

Inactive Publication Date: 2011-05-18
XIAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When extinguishing a building fire, the lost water flows down the stairs or gaps, which not only loses the fire extinguishing effect, but also causes secondary losses to the unfired lower areas
In coal fire prevention and extinguishing, it is difficult to cover all the loose coal surface with conventional water-based fire extinguishing agent in the area to be treated, which greatly reduces the fire prevention effect

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] 1 gram of strong hydrophobic magnesium hydroxide particles with a contact angle of 110° (magnesium hydroxide particles hydrophobically modified by a silane coupling agent) is added to 1 gram of a mass concentration of 0.1% sodium bicarbonate aqueous solution at 16000 rpm Stir and disperse at a rate of 1 minute for 1 minute to obtain a dry water fire extinguishing agent with a water-in-gas structure.

[0018] The fire extinguishing efficiency of the fire extinguishing agent of this embodiment is 4 times of GB15308-2006 standard water or film foam fire extinguishing agent.

Embodiment 2

[0020] This embodiment is the same as Example 1, except that the solid particles used are magnesium hydroxide particles, silicon dioxide particles, calcium carbonate particles, talc particles, aluminum oxide particles, aluminum hydroxide particles, zinc borate particles, oxide particles, etc. At least two of zinc particles, ferric oxide particles, titanium dioxide particles, montmorillonite particles, hydrotalcite particles, fly ash particles, diatomaceous earth particles, mica particles, attapulgite particles and zeolite particles, or Silicon particles, calcium carbonate particles, talc particles, alumina particles, aluminum hydroxide particles, zinc borate particles, zinc oxide particles, ferric oxide particles, titanium dioxide particles, montmorillonite particles, hydrotalcite particles, fly ash particles, Diatomite particles, mica particles, attapulgite particles or zeolite particles; the solute in the aqueous solution used is potassium bicarbonate, potassium chloride, sod...

Embodiment 3

[0023] 1 gram of strong hydrophobic montmorillonite particles with a contact angle of 120° (montmorillonite particles hydrophobically modified by long-chain fatty acids) was added into 20 grams of urea aqueous solution with a mass concentration of 40%, at a rate of 2000 rpm Stir and disperse for 40 minutes to obtain a dry water fire extinguishing agent with a water-in-gas structure.

[0024] The fire extinguishing efficiency of the fire extinguishing agent of this embodiment is 4.5 times of GB15308-2006 standard water or membrane foam fire extinguishing agent.

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PUM

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Abstract

The invention discloses an extinguishing agent. The extinguishing agent is formed by mixing and stirring strong hydrophobic solid particles and aqueous solution at high speed, wherein the strong hydrophobic solid particles are one type or more of magnesium hydroxide particles, silicon dioxide particles, calcium carbonate particles, talcum particles, aluminium oxide particles, aluminium hydroxide particles, zinc borate particles, zinc oxide particles, iron sesquioxide particles, titanium dioxide particles, montmorillonite particles, hydrotalcite particles, coal ash particles, diatomite particles, mica particle, attapulgite particles and zeolite particles after hydrophobic modification. The extinguishing agent disclosed by the invention is nontoxic, environmental pollution is less, and secondary loss caused by strong flowability of water can be avoided while playing the advantages of the water as the extinguishing agent and reducing the using amount.

Description

technical field [0001] The invention belongs to the technical field of chemical industry, and in particular relates to a fire extinguishing agent. Background technique [0002] Fire extinguishing agent refers to the substance that can effectively destroy the burning conditions and stop the burning. Water is an odorless and tasteless liquid, and it is the basic substance for human beings to survive. The water is easy to use and widely distributed. At the same time, the water is chemically neutral, non-toxic, has a large specific heat capacity and heat of vaporization, and has a good cooling effect. Water can directly take away the high-temperature combustion products of the flame and the heat on the fuel surface; water can absorb heat energy very effectively during the vaporization stage; the steam generated by water occupies the combustion area, which can prevent fresh air from entering the combustion area, thereby reducing the concentration of oxygen in the combustion area...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A62D1/02
Inventor 贺拥军邢隽郭晓滨
Owner XIAN UNIV OF SCI & TECH
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