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Composite microcapsule stopping agent for preventing coal spontaneous combustion and preparation method of composite microcapsule stopping agent

A technology of composite microcapsules and coal spontaneous combustion, which is applied in dust prevention, mining equipment, earthwork drilling, etc., can solve the problems of uneven distribution of inhibitors, poor inhibitory effect, narrow coverage, etc., and achieves wide coverage, High resistance rate, no toxic side effects

Active Publication Date: 2018-06-15
CHINA UNIV OF MINING & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, when the current inhibitor is used, a permanent liquid storage tank is established on the ground. The liquid storage tank is laid with pipelines to the upper and lower openings of the coal mining face. The inhibitor is transported from the liquid storage tank to the working face through a pressurized pump for spraying. Its inhibitory effect is poor and its stability is poor, and the inhibitor may contain toxic, highly corrosive and non-degradable organic substances, which will pollute the environment; in addition, the existing inhibitors cannot be evenly distributed in the gob coal In the gaps, the coverage is narrow

Method used

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  • Composite microcapsule stopping agent for preventing coal spontaneous combustion and preparation method of composite microcapsule stopping agent
  • Composite microcapsule stopping agent for preventing coal spontaneous combustion and preparation method of composite microcapsule stopping agent
  • Composite microcapsule stopping agent for preventing coal spontaneous combustion and preparation method of composite microcapsule stopping agent

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Effect test

Embodiment 1

[0026] A composite microcapsule inhibitor for preventing coal spontaneous combustion, comprising a shell and an inhibitor solution sealed in the shell, the component content of the shell and the inhibitor solution: see Table 1.

[0027] Each component weight part of table 1 embodiment one

[0028]

[0029] The preparation method of the composite microcapsule inhibitor for the above-mentioned prevention and treatment of coal spontaneous combustion comprises the following steps:

[0030] (1) Preparation of inhibitor solution: prepare and measure magnesium chloride solution and calcium chloride solution respectively, prepare the mixed solution of magnesium chloride and calcium chloride, stand-by after preparation;

[0031] (2) Preparation of composite phase change mixture: measure phase change material, flame retardant material and reinforcing material and add them to the mixer to mix evenly to obtain composite phase change mixture, then heat the composite phase change mixture...

Embodiment 2

[0037] A composite microcapsule inhibitor for preventing coal spontaneous combustion, comprising a shell and an inhibitor solution sealed in the shell, the component content of the shell and the inhibitor solution: see Table 2.

[0038] Each component weight part of table 2 embodiment two

[0039]

[0040] The preparation method of the composite microcapsule inhibitor for the above-mentioned prevention and treatment of coal spontaneous combustion comprises the following steps:

[0041] (1) Preparation of inhibitor solution: magnesium chloride solution is prepared after magnesium chloride and water are measured, and stand-by after preparation is completed;

[0042] (2) Preparation of composite phase change mixture: measure phase change material, flame retardant material and reinforcing material and add them to the mixer to mix evenly to obtain composite phase change mixture, then heat the composite phase change mixture to 65-70°C Constant temperature storage;

[0043] (3) ...

Embodiment 3

[0048] A composite microcapsule inhibitor for preventing coal spontaneous combustion, comprising a shell and an inhibitor solution sealed in the shell, the component content of the shell and the inhibitor solution: see Table 3.

[0049] Each component weight part of table 3 embodiment three

[0050]

[0051] The preparation method of the composite microcapsule inhibitor for the above-mentioned prevention and treatment of coal spontaneous combustion comprises the following steps:

[0052] (1) Preparation of inhibitor solution: take triethyl (tetradecyl) phosphine chloride salt ionic liquid for stand-by;

[0053] (2) Preparation of composite phase change mixture: measure the phase change material, flame retardant material and reinforcing material, add them to the mixer and mix them evenly to obtain the composite phase change material emulsion, and then heat the composite phase change material emulsion to 65-70°C Constant temperature storage;

[0054] (3) uniformly mix the i...

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Abstract

The invention relates to a composite microcapsule stopping agent for preventing coal spontaneous combustion and a preparation method of the composite microcapsule stopping agent. The stopping agent comprises a wall shell and a stopping agent solution sealed in the wall shell. The wall shell is mainly prepared from the following components of, by weight, 70-80 parts of phase-change materials, 10-20parts of flame-resistant materials and 8-12 parts of reinforcing materials. The stopping agent solution is ionic liquid or a chloride solution. The stopping agent solution is evenly composited to thecomposite phase-change materials to obtain a mixed emulsion, the mixed emulsion is sprayed into a dry porous medium in an emulsion-drop mode through a spraying device to enable mixed emulsion drops to be further atomized into mist drops with the particle diameter of 30-50 [mu]m, and after the mixed emulsion which is formed into the mist drops makes contact with cold air, the composite phase-change mixed materials are quickly solidified to wrap the stopping agent solution to form the composite microcapsule stopping agent. The stopping agent can be evenly distributed in coal seams, the coveragerange is wide, accumulation of heat is prevented, coal spontaneous combustion is resisted, and the preparation method can efficiently produce and process the composite microcapsule stopping agent.

Description

technical field [0001] The invention belongs to the technical field of fire prevention and extinguishing in goafs of coal mines, in particular to a fire extinguishing flame retardant for underground goafs in coal mines and a preparation method thereof, in particular to a composite microcapsule inhibitor for preventing spontaneous combustion of coal and a preparation method thereof . Background technique [0002] Coal seam spontaneous combustion fire is one of the main factors restricting the safe production and development of coal mines in my country. The fire caused by coal spontaneous combustion not only seriously endangers the safe production of coal mines, but also causes a large loss of coal resources and releases a large amount of toxic and harmful gases, threatening people's lives and health. Compared with other major coal-producing countries in the world, my country has a large number of low-grade coal types and a wide range of mines where spontaneous combustion occ...

Claims

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Application Information

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IPC IPC(8): E21F5/06C09K21/14
CPCC09K21/14E21F5/06
Inventor 蒋曙光崔传波高翔宇张卫清吴征艳王凯邵昊郑思文唐海琳
Owner CHINA UNIV OF MINING & TECH
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