Economic and environment-friendly gel foam for preventing and curing coal spontaneous combustion

A technology of gel foam and coal spontaneous combustion, which is applied in dust prevention, fire prevention equipment, fire prevention, etc. It can solve the problems of limited application and high cost of polymer gel foam, and achieve increased foam volume, low cost, and gelation time controllable effect

Inactive Publication Date: 2019-06-18
SHANDONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the high cost of polymer gel foam greatly limits the application of such materials in coal mine fire prevention and extinguishing

Method used

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  • Economic and environment-friendly gel foam for preventing and curing coal spontaneous combustion
  • Economic and environment-friendly gel foam for preventing and curing coal spontaneous combustion
  • Economic and environment-friendly gel foam for preventing and curing coal spontaneous combustion

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] According to the quality of the economical and environment-friendly gel foam base liquid is 100g, the mass concentration of the prepared compound blowing agent (sodium fatty alcohol polyoxyethylene ether sulfate: sodium lauryl sulfate = 1:1) is 0.8%, and the modified silicon The mass concentration of resin polyether emulsion is 0.25%, the mass concentration of water glass is 15%, the mass concentration of NaHCO3 is 1%, and the rest is water.

[0040] First, mix water glass with deionized water, stir well to obtain a mixed solution; mix fatty alcohol polyoxyethylene ether sodium sulfate, sodium lauryl sulfate, modified silicone resin polyether emulsion and NaHCO 3Add it to the mixture in turn, stir mechanically at a speed greater than 1000r / min for more than 1min, and use the Waring-Blender stirring method to foam to form gel foam.

[0041] After the briquettes are burned in a self-made combustion furnace for 10 minutes, the same amount (300-600ml) of gel foam, water gla...

Embodiment 2

[0047] According to the quality of the economical and environment-friendly gel foam base liquid is 100g, the mass concentration of the prepared compound blowing agent (sodium fatty alcohol polyoxyethylene ether sulfate: sodium lauryl sulfate = 1:1) is 0.8%, and the modified silicon The mass concentration of resin polyether emulsion is 0.25%, the mass concentration of water glass is 12%, NaHCO 3 The mass concentration is 2%, and the rest is water.

[0048] First, mix water glass with deionized water, stir well to obtain a mixed solution; mix fatty alcohol polyoxyethylene ether sodium sulfate, sodium lauryl sulfate, modified silicone resin polyether emulsion and NaHCO 3 Add it to the mixture in turn, stir mechanically at a speed greater than 1000r / min for more than 1min, and use the Waring-Blender stirring method to foam to form gel foam.

[0049] Using the same method as in Example 1, the temperature of the briquettes dropped by 65.52% after the gel foam was sprayed, and the t...

Embodiment 3

[0051] According to the quality of the economical and environment-friendly gel foam base liquid is 100g, the mass concentration of the prepared compound blowing agent (sodium fatty alcohol polyoxyethylene ether sulfate: sodium lauryl sulfate = 1:1) is 0.8%, and the modified silicon The mass concentration of resin polyether emulsion is 0.25%, the mass concentration of water glass is 10%, NaHCO 3 The mass concentration is 5%, and the rest is water.

[0052] First, mix water glass with deionized water, stir well to obtain a mixed solution; mix fatty alcohol polyoxyethylene ether sodium sulfate, sodium lauryl sulfate, modified silicone resin polyether emulsion and NaHCO 3 Add it to the mixture in turn, stir mechanically at a speed greater than 1000r / min for more than 1min, and use the Waring-Blender stirring method to foam to form gel foam.

[0053] Using the same method as in Example 1, the temperature of the briquettes dropped by 61.36% after the gel foam was sprayed, and the t...

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Abstract

The invention relates to the technical application field of coal mine fire preventing and extinguishing, and provides economic and environment-friendly gel foam for preventing and curing coal spontaneous combustion. The economic and environment-friendly gel foam is prepared from the components in percentage by weight: 4% to 35% of water glass, 0.4% to 3% of a foaming agent, 0.1% to 3% of a foam stabilizing agent, 1% to 5% of a coagulant, and the balance of water; and the foaming agent is formed by compounding two or more anionic-type foaming agents. According to the economic and environment-friendly gel foam for preventing and curing coal spontaneous combustion, the adopted foaming agent is formed by compounding two or more anionic-type foaming agents, an adopted gelatinizing system is composed of the water glass and the coagulant, the cost is low, economy and environmental protection are realized, and the gel foam is non-poisonous and harmless during using and has good economic benefits. The obtained gel foam maintains the advantages of high fluidity and good aggregation of water-based foam before gelatinizing, and after gelatinizing, the advantages of the outstanding cooling effect and the good leak sealing effect of water glass gel are maintained; and the gel foam is good in inhibition and fire extinguishing effect, the fire source temperature, thermal radiation and CO output can be significantly reduced, fire extinguishing is stable, and the reignition phenomenon does not occur.

Description

technical field [0001] The invention relates to the application field of coal mine fire prevention and extinguishing technology, in particular to an economical and environment-friendly gel foam for preventing and controlling coal spontaneous combustion. Background technique [0002] Coal spontaneous combustion seriously threatens the safe production of coal mines, causing casualties, property losses, environmental pollution and other issues. In order to prevent coal spontaneous combustion, goaf grouting, spraying inhibitors, inert gas injection, foam injection and gel injection and other fire prevention technologies are widely used at home and abroad. These technologies play an important role in the prevention and control of coal spontaneous combustion, but there are still some unsolved problems. For example, the grout injected by the grouting anti-fire technology accumulates in the lower parts of the terrain, and the grout cannot evenly cover the floating coal, and cannot ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21F5/08E21F5/00E21F17/00
CPCE21F5/00E21F5/08E21F17/00A62C3/06A62D1/00
Inventor 胡相明薛迪吴明跃赵艳云程卫民陆伟张茜邵志昂李永生孔彪贺正龙亓冠圣
Owner SHANDONG UNIV OF SCI & TECH
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