CN103806932A - Method for realizing coal ignition prevention and extinguishment through chemical reactions in goafs by using high-pressure spray head atomization - Google Patents
Method for realizing coal ignition prevention and extinguishment through chemical reactions in goafs by using high-pressure spray head atomization Download PDFInfo
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- CN103806932A CN103806932A CN201310070209.0A CN201310070209A CN103806932A CN 103806932 A CN103806932 A CN 103806932A CN 201310070209 A CN201310070209 A CN 201310070209A CN 103806932 A CN103806932 A CN 103806932A
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- coal
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- calcium hydroxide
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Abstract
A saturated aqueous solution of calcium hydroxide is placed into a high-pressure spray head atomizer, ionized water containing the saturated aqueous solution of the calcium hydroxide is changed into an atomized state under the effect of high-pressure spray head atomization, and ion fog containing the calcium hydroxide is diffused onto float coal of coal mines through diffusion and reacts with carbon dioxide in the air or carbon dioxide on the float coal to produce calcium carbonate, so that oxidizing reactions of the coal are prevented.
Description
Technical field: a kind ofly realize in goaf with high-pressure nozzle atomization that chemical reaction prevention coal catches fire and the method for put out a fire belongs to the security fields in pit mining coal process, be specially adapted to prevention and control goaf, spontaneous combustionof coal and colliery internal and external reasons fire under coal mine.
Background technology: by retrieval comprehensively both at home and abroad, domestic main anti-extinguishing method is that oxygen barrier, water put out etc. at present, its common shortcoming and defect is that fire-fighting efficiency is low, not science, unreasonable, the process of processing chemical combustion by the method for physics, for overcoming the deficiency of above-mentioned existence, we have invented a kind of method that chemical reaction prevention coal catches fire and puts out a fire that realizes in goaf with high-pressure nozzle atomization.
Summary of the invention: a kind ofly realize in goaf with high-pressure nozzle atomization that chemical reaction prevention coal catches fire and the method for put out a fire is applicable to recovery process under coal mine and prevents spontaneous combustionof coal to cause fire, ensure the technological means of safety of coal mines, it is characterized in that: the saturated aqueous solution of calcium hydroxide is excited into water smoke by high-pressure nozzle atomization by the saturated aqueous solution that contains calcium hydroxide, fog state, water smoke is diffused into gaseous state shape on the float coal in goaf, and with float coal on carbon dioxide moment of adsorbing carry out chemical reaction and generate calcium carbonate, and be filled in the surface of float coal and the crack of float coal, thereby with solid-state shape, the carbon dioxide on float coal is solidified into calcium carbonate, and encase the surface of coal, stop airborne oxygen composition and coal surface to carry out oxidation reaction, thereby realize the method for catching fire and putting out a fire with chemical reaction prevention coal.
A kind ofly realize in goaf with high-pressure nozzle atomization that chemical reaction prevention coal catches fire and the method for putting out a fire compared with prior art has the following advantages:
1, by the chemical reaction of spontaneous combustionof coal and burning, change Combined extinguishing into by simple physics fire extinguishing, effect is remarkable, and preventive effect has reached once prevention, the effect of throughout the year no longer getting angry.
2, fire extinguishing procedure water smoke specific area is large, the physical characteristic of more easily absorbing heat, lowering the temperature, more have free goaf float coal and absorbing carbon dioxide and the calcium hydroxide in the water smoke generation calcium carbonate that reacts, and be solidificated in the surface of combustible, put out a fire and the double action of oxygen barrier thereby play.
3, the easier combination of sour gas that the alkalescence of calcium hydroxide and combustion process generate, thus play the effect of smoke elimination, cooling, depositing dust, improve visibility, light-permeable degree in disaster area, be conducive to rescue and relief work.
4, can eliminate the toxic and harmful composition in flame range, improve rescue and relief work environment, reduce injury and loss to staff.
5, raw amount and the content of carbon monoxide can be reduced, growing amount and the content of carbon dioxide, sulfur dioxide, hydrogen sulfide can be neutralized and reduce.
6, be conducive to resume production fast.
The specific embodiment: first calcium oxide powder is dissolved in light water, after clarifying, saturated calcium hydroxide aqueous solution after clarification is injected to high-pressure nozzle atomizer, produce vaporific gas, by produced vaporific gas by diffusing on the float coal in goaf and in crack, and at once with float coal on and in crack carbon dioxide reaction generate calcium carbonate film, thereby realized a kind of method that chemical reaction prevents coal to catch fire and put out a fire that realizes in goaf with high-pressure nozzle atomization.
Claims (1)
1. realize in goaf with high-pressure nozzle atomization that chemical reaction prevention coal catches fire and the method for put out a fire is applicable to recovery process under coal mine and prevents spontaneous combustionof coal to cause fire for one kind, ensure the technological means of safety of coal mines, it is characterized in that: the saturated aqueous solution of calcium hydroxide is excited into water smoke by high-pressure nozzle atomization by the saturated aqueous solution that contains calcium hydroxide, fog state, water smoke is diffused into gaseous state shape on the float coal in goaf, and with float coal on carbon dioxide moment of adsorbing carry out chemical reaction and generate calcium carbonate, and be filled in the surface of float coal and the crack of float coal, thereby with solid-state shape, the carbon dioxide on float coal is solidified into calcium carbonate, and encase the surface of coal, stop airborne oxygen composition and coal surface to carry out oxidation reaction, thereby realize the method for catching fire and putting out a fire with chemical reaction prevention coal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310070209.0A CN103806932A (en) | 2013-02-23 | 2013-02-23 | Method for realizing coal ignition prevention and extinguishment through chemical reactions in goafs by using high-pressure spray head atomization |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310070209.0A CN103806932A (en) | 2013-02-23 | 2013-02-23 | Method for realizing coal ignition prevention and extinguishment through chemical reactions in goafs by using high-pressure spray head atomization |
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| Publication Number | Publication Date |
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| CN103806932A true CN103806932A (en) | 2014-05-21 |
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| CN201310070209.0A Pending CN103806932A (en) | 2013-02-23 | 2013-02-23 | Method for realizing coal ignition prevention and extinguishment through chemical reactions in goafs by using high-pressure spray head atomization |
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| CN (1) | CN103806932A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105381704A (en) * | 2015-10-14 | 2016-03-09 | 辽宁工程技术大学 | CO2 gas and solid adsorbent mixed fire-extinguishing and storing method and test system thereof |
| CN114832254A (en) * | 2022-05-20 | 2022-08-02 | 山东宙雨消防科技股份有限公司 | Application method of fire extinguishing charcoal without reburning |
-
2013
- 2013-02-23 CN CN201310070209.0A patent/CN103806932A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105381704A (en) * | 2015-10-14 | 2016-03-09 | 辽宁工程技术大学 | CO2 gas and solid adsorbent mixed fire-extinguishing and storing method and test system thereof |
| CN105381704B (en) * | 2015-10-14 | 2017-08-01 | 辽宁工程技术大学 | CO2Gas mixes the method and its pilot system put out a fire and sealed up for safekeeping with solid absorbent |
| CN114832254A (en) * | 2022-05-20 | 2022-08-02 | 山东宙雨消防科技股份有限公司 | Application method of fire extinguishing charcoal without reburning |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140521 |