Capsule fire preventing and extinguishing material for coal bed fire and preparation method thereof

A technology for fire prevention and fire prevention. It can be used in fire prevention equipment and other directions. It can solve the problems of high stirring intensity, low water absorption of materials, and difficult to prevent and extinguish fire, and achieve good thermal stability and heat resistance, film-forming and dispersibility. Good, reduce the effect of oxidation reaction rate

Inactive Publication Date: 2017-07-04
XIAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Inhibitor (CaCl 2 , MgCl 2 , NaCl 2 etc.) It is difficult to enter the problematic area, the water absorption of the material itself is very small, and it cannot withstand high temperature evaporation in the goaf, the actual effect is limited, and the pollution of mine water is serious
The powdery inertization inhibitor technology has better fire prevention and extinguishing effect, but the deliquescence of powdery materials is not easy to store (for example, at room temperature, diammonium hydrogen phosphate releases ammonia in humid air), and it is not easy to disperse evenly in the coal body, so it is difficult to Give full play to its anti-fire performance, if it is injected into the coal body with its aqueous solution, it will be easily lost
At present, the base material water glass and coagulant (ammonium bicarbonate,

Method used

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  • Capsule fire preventing and extinguishing material for coal bed fire and preparation method thereof
  • Capsule fire preventing and extinguishing material for coal bed fire and preparation method thereof
  • Capsule fire preventing and extinguishing material for coal bed fire and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A capsule fire-proofing material for coal seam fires and a preparation method thereof, the materials required for preparing the capsule fire-proofing material for coal seam fires are as follows in terms of mass fractions:

[0027]

[0028] Follow the steps below for production:

[0029] a, take the weight of each component respectively according to the proportion;

[0030] b. Grinding ammonium bicarbonate, ammonium dihydrogen phosphate, ammonium chloride, diammonium hydrogen phosphate, calcium chloride, and melamine formaldehyde resin respectively so that the particle diameters are all less than 50 μm, and mixing ammonium bicarbonate, ammonium dihydrogen phosphate, Ammonium chloride, diammonium hydrogen phosphate, and calcium chloride are placed in a container and mixed fully and uniformly to form a mixed powder.

[0031] c. Put the melamine formaldehyde resin in ether, stir to accelerate the dissolution until it is completely dissolved, add the above mixed powder a...

Embodiment 2

[0035] A capsule fire-proofing material for coal seam fires and a preparation method thereof, the materials required for preparing the capsule fire-proofing material for coal seam fires are as follows in terms of mass fractions:

[0036]

[0037] Follow the steps below for production:

[0038] a, take the weight of each component respectively according to the proportion;

[0039] b. Grinding ammonium bicarbonate, ammonium dihydrogen phosphate, ammonium chloride, diammonium hydrogen phosphate, calcium chloride, and melamine formaldehyde resin respectively so that the particle diameters are all less than 50 μm, and mixing ammonium bicarbonate, ammonium dihydrogen phosphate, Ammonium chloride, diammonium hydrogen phosphate, and calcium chloride are placed in a container and mixed fully and uniformly to form a mixed powder.

[0040] c. Put the melamine formaldehyde resin in ether, stir to accelerate the dissolution until it is completely dissolved, add the above mixed powder a...

Embodiment 3

[0044] A capsule fire-proofing material for coal seam fires and a preparation method thereof, the materials required for preparing the capsule fire-proofing material for coal seam fires are as follows in terms of mass fractions:

[0045]

[0046] Follow the steps below for production:

[0047] a, take the weight of each component respectively according to the proportion;

[0048] b. Grinding ammonium bicarbonate, ammonium dihydrogen phosphate, ammonium chloride, diammonium hydrogen phosphate, calcium chloride, and melamine formaldehyde resin respectively so that the particle diameters are all less than 50 μm, and mixing ammonium bicarbonate, ammonium dihydrogen phosphate, Ammonium chloride, diammonium hydrogen phosphate, and calcium chloride are placed in a container and mixed fully and uniformly to form a mixed powder.

[0049] c. Put the melamine formaldehyde resin in ether, stir to accelerate the dissolution until it is completely dissolved, add the above mixed powder a...

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PUM

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Abstract

The invention discloses a capsule fire preventing and extinguishing material for a coal bed fire and a preparation method of the capsule fire preventing and extinguishing material. The fire preventing and extinguishing material comprises a core material and a coating layer with which the outer side of the core material is coated. The core material is prepared from a powder stopping agent which is the mixed powder stopping agent comprising ammonium carbonate, ammonium dihydrogen phosphate, ammonium chloride, diammonium hydrogen phosphate and calcium chloride. The coating layer is prepared from an organic polymer which is melamine formaldehyde resin. The core material is coated with the coating layer through a water bath drying method. The mass fraction ratio of ammonium bicarbonate to ammonium dihydrogen phosphate to ammonium chloride to diammonium hydrogen phosphate to calcium chloride to melamine formaldehyde resin is 24-27:10-11:18-20:9-10:6-7:25-33:0.5. The capsule fire preventing and extinguishing material has the advantages of being nontoxic, free of pollution, convenient to store, capable of evenly covering a fire area, short in fire extinguishing period and good in effect, having the leakage stoppage, oxygen isolation, cooling and inhibition effects, being convenient to use and convenient and fast to operate and the like.

Description

technical field [0001] The invention relates to the technical field of coal mine fire prevention and extinguishing, in particular to a capsule fire prevention material for coal seam fires and a preparation method thereof. Background technique [0002] Coal mine fire is one of the important disasters that affect the safety of coal mine production. The commonly used fire extinguishing methods include grouting yellow mud fire extinguishing system, grouting glue injection fire extinguishing system, inert gas fire extinguishing, foam fire extinguishing, powder inerting inhibitor fire extinguishing, etc. They are all There are respective shortcomings. Grouting is based on quantity, but there will be some places that are difficult to be covered, and some places cannot be used due to restrictions; when grouting, a large amount of water is injected into the underground, which pollutes the environment and greatly increases the workload and resources of mine drainage and sewage dischar...

Claims

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Application Information

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IPC IPC(8): A62D1/00C09K21/04
CPCA62D1/0021A62D1/0092C09K21/04
Inventor 翟小伟王凯吴世博邓军
Owner XIAN UNIV OF SCI & TECH
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