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Foam fire preventing and extinguishing material, and preparation method and application thereof

A fire prevention and foam technology, applied in fire prevention equipment, fire rescue, etc., can solve the problems of inability to prevent coal spontaneous combustion, poor foam stability, low foaming multiple, etc., and achieve enhanced fire prevention effect, enhanced strength, increased The effect of high viscosity

Inactive Publication Date: 2020-02-21
ANHUI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the foam material used in the existing foam injection method has poor foam stability, low foaming ratio, and small stacking height. It usually bursts within 8 to 12 hours, and cannot effectively prevent coal spontaneous combustion for a long time.

Method used

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  • Foam fire preventing and extinguishing material, and preparation method and application thereof

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Experimental program
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preparation example Construction

[0033] The present invention provides the preparation method of the foam fire-proofing material described in the above-mentioned technical solution, comprising the following steps:

[0034] Mix part of the water, foam stabilizer and expandable graphite, and perform the first stirring to obtain a thickened solution;

[0035] Mix the remaining water and foaming agent, and perform the second stirring to obtain a foam system;

[0036] The thickened solution and the foam system are mixed, and the third stirring is carried out to obtain the foam fire-proofing material.

[0037] In the invention, part of the water, the foam stabilizer and the expandable graphite are mixed, and the first stirring is performed to obtain a thickened solution. In the present invention, the stirring speed of the first stirring is preferably 900-1100 r / min, more preferably 1000 r / min, and the stirring time is preferably 3-5 min, more preferably 4 min. In the thickened solution, the foam stabilizer is dis...

Embodiment 1

[0044] Raw materials for the preparation of foam fire extinguishing materials: 1 kg of sodium α-olefin sulfonate, 1 kg of sodium dodecylbenzene sulfonate, 2.5 kg of sodium alginate, 10 kg of expandable graphite, and 100 kg of water.

[0045] Add 30kg of water, 2.5kg of sodium alginate and 10kg of expandable graphite into container A, and stir at a speed of 1000r / min for 4min to obtain a thickened solution;

[0046] Add 70 kg of water, 1 kg of sodium α-olefin sulfonate and 1 kg of sodium dodecylbenzene sulfonate into container B, and stir at a speed of 2000 r / min for 5 minutes to obtain a foam system;

[0047] The thickened solution was added to the foam system, and stirred at a speed of 2000 r / min for 5 minutes to obtain a foam fire extinguishing material.

Embodiment 2

[0049] Raw materials for the preparation of foam fire-resistant materials: 1.5 kg of sodium α-olefin sulfonate, 1.5 kg of sodium dodecylbenzene sulfonate, 3 kg of sodium alginate, 13 kg of expandable graphite, and 100 kg of water.

[0050] Add 30kg of water, 3kg of sodium alginate and 13kg of expandable graphite into container A, and stir at a speed of 1000r / min for 4min to obtain a thickened solution;

[0051] Add 70kg of water, 1.5kg of sodium α-olefin sulfonate and 1.5kg of sodium dodecylbenzenesulfonate into container B, and stir at a speed of 2000r / min for 8 minutes to obtain a foam system;

[0052] The thickened solution was added to the foam system, and stirred at a speed of 2000 r / min for 8 minutes to obtain a foam fire extinguishing material.

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Abstract

The invention belongs to the technical field of fire extinguishing materials for coal mines, and particularly relates to a foam fire preventing and extinguishing material, and a preparation method andapplication thereof. The foam fire preventing and extinguishing material provided by the invention comprises the following preparation raw materials in parts by weight: 2-4 parts of a foaming agent,2.5-3.5 parts of a foam stabilizer, 10-16 parts of expandable graphite and 100 parts of water. Results of embodiments in the invention show that the foam expansion of the foam fire preventing and extinguishing material provided by the invention is up to 15-30 times, so the foam fire preventing and extinguishing material has good foaming performance; meanwhile, the material has good flow diffusivity, and in the flowing state, the material has a viscosity of only 700 mPa.s and foam stabilizing time of longer than 12 h. After being conveyed to an ignition point in a goaf through a grouting pipeline of mine, the foam fire preventing and extinguishing material can be diffused and accumulated in a large area in the goaf and can cover and block low-altitude float coal and high-altitude float coal, and an accumulation height reaches 1.5 m or above.

Description

technical field [0001] The invention relates to the technical field of fire extinguishing materials for coal mines, in particular to a foam fire extinguishing material and its preparation method and application. Background technique [0002] Coal spontaneous combustion is one of the main natural disasters in coal mine production. According to statistics, more than 51.3% of key coal mines have the risk of spontaneous combustion, and fires caused by coal spontaneous combustion account for more than 90% of the total fire accidents, and coal spontaneous combustion in goafs accounts for 60% of spontaneous combustion fires. In recent years, with the vigorous promotion and application of fully mechanized top-coal caving technology, coal output and production efficiency have been greatly improved. However, this coal mining method has high mining intensity, high caving height, and many residual coal left in the goaf, and air leakage Seriously, the spontaneous combustion of residual ...

Claims

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Application Information

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IPC IPC(8): A62D1/04
CPCA62D1/0071A62C5/02A62C99/0036
Inventor 张雷林石必明张美齐钟珍杨前意韦健
Owner ANHUI UNIV OF SCI & TECH
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