A kind of temperature-sensitive explosive cell coat inhibitor and preparation method thereof

A technology of inhibitor and aftercoat, which is applied in mining equipment, earth square drilling, dust prevention, etc., can solve the problems of complex production process, short life of inhibitor, and reduction of process steps, so as to simplify the production process, simple processing, The effect of reducing oxygen concentration

Active Publication Date: 2021-04-13
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims at the disadvantages of existing inhibitors such as short life, poor stability, strong corrosion, etc., and the disadvantages that the temperature-sensitive cell coat inhibitor has a relatively complicated manufacturing process; it provides a temperature-sensitive burst cell coat inhibitor and its preparation Method, the present invention proposes a new cell-coated inhibitor gas expansion and bursting technology, only drilling one hole can reduce the process steps, the strength is also significantly improved compared with the previous one, and the inhibitor can cover a wider range and the inhibitor can be dispersed evenly , to prevent the accumulation of heat, a certain thickness of the new coating inhibitor can fully prevent the spontaneous combustion of coal

Method used

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  • A kind of temperature-sensitive explosive cell coat inhibitor and preparation method thereof
  • A kind of temperature-sensitive explosive cell coat inhibitor and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0019] Using cellulose acetate pellets with a diameter of 4cm, when the pressure is 0.8MPa, the spherical shell of cellulose acetate can be ruptured to release the inhibitor. It can be calculated that the mass of sodium bicarbonate solid is 1-2g, and the mass fraction It is 3-5% dilute hydrochloric acid solution, and the reaction is carried out at this configuration ratio; the concentration of the inhibitor solution is not enough at this time, and 4-6g of magnesium chloride needs to be added to ensure that the concentration of the inhibitor solution is 15-20% between.

[0020] The reaction principle is as follows: .

[0021]

[0022] Step 1, making an inhibitor solution: prepare a mixed solution of dilute hydrochloric acid with a mass fraction of 4% and magnesium chloride with a mass fraction of 15%.

[0023] Step 2, making pellets wrapped in paraffin wax solid sodium bicarbonate: Weigh 1.5 g of sodium bicarbonate powder, wrap paraffin wax on the surface of sodium bicarb...

Embodiment 2

[0028] Using cellulose acetate pellets with a diameter of 4cm, under the pressure of 0.8MPa, the spherical shell of cellulose acetate can be ruptured to release the inhibitor. It can be calculated that the mass of sodium bicarbonate solid is 1-2g, aluminum sulfate Prepare a solution at 2.5-3.5g / 100ml, and react at this configuration ratio; the calculation shows that the concentration of the inhibitor solution is not enough at this time, and it is necessary to add 4-6g of magnesium chloride to ensure that the concentration of the inhibitor solution is 15-20 %between.

[0029] The reaction principle is as follows: .

[0030]

[0031] Step 1, making inhibitor solution: prepare a mixed solution of 3.5g / 100ml aluminum sulfate and 15% magnesium chloride by mass fraction.

[0032] Step 2, making pellets wrapped in paraffin wax solid sodium bicarbonate: Weigh 1.5 g of sodium bicarbonate powder, wrap paraffin wax on the surface of sodium bicarbonate, and make paraffin pellets wra...

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Abstract

A temperature-sensitive explosive cell coat inhibitor and a preparation method thereof belong to the technical field of coal mine goaf safety prevention and control, and can solve the shortcomings of existing inhibitors such as short service life, poor stability, and strong corrosiveness, and the temperature-sensitive cell coat resistance The inhibitor has the disadvantage that the production process is relatively complicated. First, a drill hole is drilled into the aftercoat shell, and the mixed solution of reactant A and inhibitor is injected from the drill hole, and then a small ball wrapped with paraffin wax is added to reactant B, and finally Seal the holes with melted sticky plastic. When the temperature of the coal mine goaf rises to the critical temperature of the coal, the paraffin inside the spheroid melts and reacts to generate carbon dioxide gas and salt solution, and the generated saline solution is an inhibitor solution; the generated carbon dioxide gas increases The pressure breaks through the spherical shell, and the inhibitor solution is completely released, and the gas is an inert gas, which reduces the concentration of oxygen and inhibits spontaneous combustion of coal. The invention has a simple structure and is easy to operate, and can efficiently produce and process cell-coated inhibitors.

Description

technical field [0001] The invention belongs to the technical field of safety prevention and control of coal mine gobs, and in particular relates to a temperature-sensitive blasting cell inhibitor and a preparation method thereof. Background technique [0002] Coal is the main part of my country's energy, and currently accounts for 70% to 75% of my country's primary energy production and consumption structure. It is estimated that by 2050, the proportion of coal will not be less than 50%. my country's coal mining is dominated by underground mining, and its output accounts for 97% of the total coal output. This is also the main reason for the large number of coal mining enterprises and institutions and the total coal production in my country. The safe, stable and efficient development of the coal industry is crucial to the development of my country's energy industry. my country's coal mine accidents are more than four times the total number of coal mine deaths in the world's...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21F5/08
CPCE21F5/08
Inventor 崔传波蒋曙光邓存宝高翔宇
Owner TAIYUAN UNIV OF TECH
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