CN101787289A - Method for preparing fireproof and explosion suppression pulverized fuel ash carbon dioxide material - Google Patents
Method for preparing fireproof and explosion suppression pulverized fuel ash carbon dioxide material Download PDFInfo
- Publication number
- CN101787289A CN101787289A CN201010017161A CN201010017161A CN101787289A CN 101787289 A CN101787289 A CN 101787289A CN 201010017161 A CN201010017161 A CN 201010017161A CN 201010017161 A CN201010017161 A CN 201010017161A CN 101787289 A CN101787289 A CN 101787289A
- Authority
- CN
- China
- Prior art keywords
- pulverized fuel
- fuel ash
- industrial
- carbon dioxide
- coal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 title claims abstract description 35
- 239000000446 fuel Substances 0.000 title claims abstract description 27
- 229910002092 carbon dioxide Inorganic materials 0.000 title claims abstract description 17
- 239000001569 carbon dioxide Substances 0.000 title claims abstract description 17
- 238000004880 explosion Methods 0.000 title claims abstract description 13
- 239000000463 material Substances 0.000 title claims abstract description 10
- 230000001629 suppression Effects 0.000 title claims abstract description 10
- 238000000034 method Methods 0.000 title abstract description 3
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 claims abstract description 42
- 238000002156 mixing Methods 0.000 claims abstract description 22
- 239000004372 Polyvinyl alcohol Substances 0.000 claims abstract description 21
- 229920002451 polyvinyl alcohol Polymers 0.000 claims abstract description 21
- 239000002002 slurry Substances 0.000 claims abstract description 21
- 229910000030 sodium bicarbonate Inorganic materials 0.000 claims abstract description 21
- 235000017557 sodium bicarbonate Nutrition 0.000 claims abstract description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 20
- 239000002956 ash Substances 0.000 claims description 20
- BUACSMWVFUNQET-UHFFFAOYSA-H dialuminum;trisulfate;hydrate Chemical compound O.[Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O BUACSMWVFUNQET-UHFFFAOYSA-H 0.000 claims description 18
- 239000010881 fly ash Substances 0.000 claims description 9
- 238000002360 preparation method Methods 0.000 claims description 8
- 239000000243 solution Substances 0.000 abstract description 25
- 239000003245 coal Substances 0.000 abstract description 23
- 238000002485 combustion reaction Methods 0.000 abstract description 13
- 230000002269 spontaneous effect Effects 0.000 abstract description 13
- 239000007789 gas Substances 0.000 abstract description 12
- 239000006260 foam Substances 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 3
- 239000007788 liquid Substances 0.000 abstract description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 2
- 239000007791 liquid phase Substances 0.000 abstract description 2
- 239000001301 oxygen Substances 0.000 abstract description 2
- 229910052760 oxygen Inorganic materials 0.000 abstract description 2
- 239000012071 phase Substances 0.000 abstract description 2
- 239000007790 solid phase Substances 0.000 abstract description 2
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical compound [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 abstract 3
- 239000011259 mixed solution Substances 0.000 abstract 2
- 238000007569 slipcasting Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- 239000010883 coal ash Substances 0.000 description 2
- 239000011261 inert gas Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000036760 body temperature Effects 0.000 description 1
- 235000011089 carbon dioxide Nutrition 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 239000011440 grout Substances 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000000069 prophylactic effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
The invention relates to a method for preparing fireproof and explosion suppression pulverized fuel ash carbon dioxide material, which comprises the steps of: mixing 70-80% of water and 20-30% of pulverized fuel to prepare pulverized fuel ash slurry liquid according to the mass percent; mixing 94-98% of water and 2-6% of industrial sodium hydrogen carbonate to prepare industrial sodium hydrogen carbonate solution according to the mass percent; mixing 77-92% of water, 5-15% of industrial aluminum sulfate and 3-8% of polyvinyl alcohol to prepare mixed solution of the industrial aluminum sulfate and the polyvinyl alcohol according to the mass percent; and mixing the prepared pulverized fuel ash slurry liquid, the industrial sodium hydrogen carbonate solution and the mixed solution of the industrial aluminum sulfate and the polyvinyl alcohol according to the proportion of 1: 1: 1, mutually reacting to generate a great deal of carbon dioxide, and forming a great deal of foam. The foam pulverized fuel ash has good effect of preventing and extinguishing fire, releases carbon dioxide on gas phase, reduces the oxygen concentration and gas density in a mined out space, leads the mined out space for inerting, and inhibits spontaneous combustion of coal and gas explosion; the pulverized fuel ash on solid phase covers the coal body, blocks an air leakage channel and achieves the aim of preventing the spontaneous combustion of coal; and water on liquid phase can reduce the temperature of the coal body, thus reducing the ignition rate of the spontaneous combustion of coal.
Description
Technical field
The present invention relates to a kind of fireproof and explosion suppression preparation methods, especially a kind of goaf coal spontaneous combustion and fire of being applicable to brings out the preparation method of the fireproof and explosion suppression pulverized fuel ash carbon dioxide material of gas explosion.
Background technology
Spontaneous combustion of coal is one of main natural disaster of China's mine.In China state-owned emphasis colliery, the fire that Conflagration Caused by Coal Self-ignition causes accounts for 90% of mine fire sum, provinces such as the Xinjiang of China, Ningxia, Inner Mongol also exist large-area coalfield fire, 1000～1,360 ten thousand tons of annual scaling loss coal amounts, financial loss surpasses 20,000,000,000 yuan, and spontaneous combustion of coal also produces a large amount of SO in addition
2, CO, CO
2Gas, serious environment pollution causes casualties.In order to prevent and treat spontaneous combustion of coal, extensively adopt technology such as water filling, grouting, sprinkling stopping agent, inert gas injection both at home and abroad.In recent years, preventing and extinguishing fire technologies such as gel, dytory, resistance steam fog, foamed resin have been adopted again more widely.These technology have played vital role to guaranteeing mine safety production, but all have certain limitation, and as grouting, slurry can not evenly cover coal body; Inert gas injection, gas are difficult for being trapped in the zone of injection; Gel-filled, the foamed resin cost is high.And single anti-extinguishing method still difficulty control mine fire effectively, especially can not effectively suppress goaf gas blast.This causes a large amount of wastes not only for national coal resources, and brings huge harm and financial loss for pit mining and safety in production.At the problem that original grouting exists, take measures, the grouting of pulverized fuel ash carbon dioxide foam is carried out in the worked-out section, play the dual function that suppresses goaf gas blast and spontaneous combustion of coal.Because the pulverized fuel ash slurry flowability is very big, slurries are along the coal body Gap Flow, and flyash deposits, shutoff coal body slit.Thereby play the purpose of prevention spontaneous combustion of coal, but simple flyash grouting prophylactic effect is single.If injecting carbon dioxide coal ash foam slurries can play prevention air admission, inerting enclosed space, prevent spontaneous combustion and suppress the multiple action that goaf gas explodes.
Summary of the invention
The objective of the invention is problem, a pulverized fuel ash carbon dioxide material preparation method who is used for the worked-out section fireproof and explosion suppression is provided at the prior art existence.
Worked-out section fireproof and explosion suppression pulverized fuel ash carbon dioxide material preparation method of the present invention:
Water 70%～80%, flyash 20%～30% is mixed and made into pulverized fuel ash slurry by mass percentage;
Water 94%～98%, industrial sodium bicarbonate 2%～6% is mixed and made into industrial sodium bicarbonate solution by mass percentage;
Water 77%～92%, industrial aluminum sulphate 5%～15%, polyvinyl alcohol 3%～8% is mixed and made into the mixing solutions of industrial aluminum sulphate and polyvinyl alcohol by mass percentage;
The pulverized fuel ash slurry, industrial sodium bicarbonate solution, the industrial aluminum sulphate that are mixed with different mass per-cent are mixed and can use by 1: 1: 1 with three kinds of solution of polyvinyl alcohol mixing solution.
Beneficial effect: adopt and can directly inject the worked-out section after being mixed by the slurries of three kinds of different mass per-cents or solution, three kinds of different slurries or the solution generation great amount of carbon dioxide that reacts to each other forms a large amount of foams.Flyash covers coal body on the solid phase, blocks the passage that leaks out, and plays the purpose that prevents spontaneous combustion of coal; Water can reduce the coal body temperature on the liquid phase, reduces the ignition probability of spontaneous combustion of coal.Formed foam flyash is prevented good extinguishing effect, and release of carbon dioxide on the gas phase can reduce worked-out section oxygen concentration and gas density, and the inerting worked-out section suppresses spontaneous combustion of coal and gas explosion; Pulverized fuel ash carbon dioxide foam grouting system can be installed and used on the ground, has saved the man-hour that material is removed in past down-hole, and is easy to operate, and result of use is good.
Description of drawings
Accompanying drawing is a pulverized fuel ash carbon dioxide foam preparation synoptic diagram of the present invention.
Among the figure: 1-industrial sodium bicarbonate liquor box, 2-industrial aluminum sulphate and polyvinyl alcohol mixing liquor box, 3,4, the 5-valve, 6-slip casting pond, 7-mixing tank, 8-Grouting Pipe.
Embodiment
Embodiment one, make pulverized fuel ash slurry, industrial sodium bicarbonate solution, industrial aluminum sulphate and polyvinyl alcohol mixing solution respectively at first by mass percentage, the slurries of three kinds of different mass per-cents or solution are mixed promptly obtaining the fireproof and explosion suppression pulverized fuel ash carbon dioxide material that can directly use then by 1: 1: 1 mass percent.Concrete steps are as follows:
1, under room temperature condition (about 25 ℃), utilize the anti-fire extinguishing of colliery terrain slip casting pond 6, add entry 70%, flyash 30%, stir by mass percentage and be prepared into pulverized fuel ash slurry;
2, in industrial sodium bicarbonate liquor box 1, inject water 94%, industrial sodium bicarbonate 6%, fully stir by mass percentage and make its dissolving, be prepared into industrial sodium bicarbonate solution;
3, in the mixing solutions case 2 of industrial aluminum sulphate and polyvinyl alcohol, inject water 77%, industrial aluminum sulphate 15%, polyvinyl alcohol 8%, fully stir by mass percentage and make its dissolving, be prepared into the mixing solutions of industrial aluminum sulphate and polyvinyl alcohol;
4, the mixing solutions case 2 with slip casting pond 6, industrial sodium bicarbonate liquor box 1, industrial aluminum sulphate and polyvinyl alcohol is connected on the mixing tank 7 that is located at the working-yard by pipeline respectively, the preparation of three kinds of slurries or solution and mix and can carry out on ground also can directly be carried out in needing the working face of slip casting;
5, be located at three kinds of slurries by branch or the control valve 3,4,5 of solution on communicating pipe controlled the flow that enters mixing tank 7 respectively, the slurries of three kinds of different mass per-cents or solution mix in 1: 1: 1 ratio.
When needing slip casting, open the control valve 5 in coal ash pulp liquid grout pond 6 earlier, open the control valve 3 of industrial sodium bicarbonate liquor box 1 then, open the control valve 4 of industrial aluminum sulphate and polyvinyl alcohol mixing liquor box 2 again, make the pulverized fuel ash slurry of three kinds of different mass per-cents, industrial sodium bicarbonate solution, industrial aluminum sulphate and polyvinyl alcohol mixing solution, after in mixing tank 7, pressing mixing in 1: 1: 1, react to each other and produce a large amount of carbonic acid gas, form a large amount of foams, by Grouting Pipe 8 pulverized fuel ash carbon dioxide material is sprayed on the coal body that covers at last, play the effect of fireproof and explosion suppression.
Embodiment two,
In the mass percent of pulverized fuel ash slurry: water 75%, flyash 25%; In the industrial sodium bicarbonate solution quality per-cent: water 96%, industrial sodium bicarbonate 4%; In industrial aluminum sulphate and the polyvinyl alcohol mixing solution quality per-cent: water 85%, industrial aluminum sulphate 10%, polyvinyl alcohol 5%.Other is identical with embodiment one, slightly.
Embodiment three,
In the pulverized fuel ash slurry mass percent: water 80%, flyash 20%; In the industrial sodium bicarbonate solution quality per-cent: water 98%, industrial sodium bicarbonate 2%; In industrial aluminum sulphate and the polyvinyl alcohol mixing solution quality per-cent: water 92%, industrial aluminum sulphate 5%, polyvinyl alcohol 3%.Other is identical with embodiment one, slightly.
Claims (1)
1. the preparation method of a worked-out section fireproof and explosion suppression pulverized fuel ash carbon dioxide material is characterized in that:
Water 70%～80%, flyash 20%～30% is mixed and made into pulverized fuel ash slurry by mass percentage;
Water 94%～98%, industrial sodium bicarbonate 2%～6% is mixed and made into industrial sodium bicarbonate solution by mass percentage;
Water 77%～92%, industrial aluminum sulphate 5%～15%, polyvinyl alcohol 3%～8% is mixed and made into the mixing solutions of industrial aluminum sulphate and polyvinyl alcohol by mass percentage;
The pulverized fuel ash slurry, industrial sodium bicarbonate solution, the industrial aluminum sulphate that are mixed with different mass per-cent are mixed and can use by 1: 1: 1 with three kinds of solution of polyvinyl alcohol mixing solution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010017161A CN101787289B (en) | 2010-01-07 | 2010-01-07 | Method for preparing fireproof and explosion suppression pulverized fuel ash carbon dioxide material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010017161A CN101787289B (en) | 2010-01-07 | 2010-01-07 | Method for preparing fireproof and explosion suppression pulverized fuel ash carbon dioxide material |
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| Publication Number | Publication Date |
|---|---|
| CN101787289A true CN101787289A (en) | 2010-07-28 |
| CN101787289B CN101787289B (en) | 2012-09-05 |
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|---|---|---|---|
| CN201010017161A Expired - Fee Related CN101787289B (en) | 2010-01-07 | 2010-01-07 | Method for preparing fireproof and explosion suppression pulverized fuel ash carbon dioxide material |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| RU2482279C2 (en) * | 2011-06-16 | 2013-05-20 | Государственное образовательное учреждение Высшего профессионального образования Национальный исследовательский Томский политехнический университет | Method to prevent and suppress self-ignition |
| CN103790609A (en) * | 2013-02-27 | 2014-05-14 | 杜志刚 | Method of using high frequency oscillation for preventing coal ignition and extinguishing fire through chemical reaction in fire area |
| CN103806929A (en) * | 2013-02-23 | 2014-05-21 | 杜志刚 | Method for realizing coal ignition prevention and extinguishment through chemical reactions on mining faces by using high-frequency oscillation |
| WO2015007104A1 (en) * | 2013-07-17 | 2015-01-22 | 中国矿业大学 | Coal ash solidification foam material used for prevention and treatment of spontaneous combustion of coal and preparation method therefor |
| CN108798749A (en) * | 2018-06-07 | 2018-11-13 | 常州大学 | A kind of methods and applications preparing novel explosion suppression agent using incineration of refuse flyash |
| CN112377235A (en) * | 2020-12-03 | 2021-02-19 | 西安科技大学 | Mine stopping agent sprinkler |
| CN114159947A (en) * | 2021-11-29 | 2022-03-11 | 国家能源投资集团有限责任公司 | System for dredging blocking of water inlet goaf of underground reservoir and reducing salinity of discharged water |
| CN115337588A (en) * | 2022-09-16 | 2022-11-15 | 中国矿业大学 | Coal ash-based fire prevention and extinguishing material for mineralizing and storing carbon dioxide and preparation method thereof |
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| GB573217A (en) * | 1943-03-31 | 1945-11-12 | Cementation Co Ltd | A method of preventing subterranean fires |
| CN87104715A (en) * | 1987-07-11 | 1988-06-01 | 北京市东城区安定门塑料印刷厂 | The compound method of powder surface-protective agent |
| CN1027687C (en) * | 1990-08-22 | 1995-02-22 | 中国市政工程华北设计院 | Covering agent for coal and powder material heap |
| US6699915B2 (en) * | 2001-09-03 | 2004-03-02 | W.R. Grace & Co.-Conn. | Foamed fireproofing composition and method |
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| CN103806929A (en) * | 2013-02-23 | 2014-05-21 | 杜志刚 | Method for realizing coal ignition prevention and extinguishment through chemical reactions on mining faces by using high-frequency oscillation |
| CN103790609A (en) * | 2013-02-27 | 2014-05-14 | 杜志刚 | Method of using high frequency oscillation for preventing coal ignition and extinguishing fire through chemical reaction in fire area |
| WO2015007104A1 (en) * | 2013-07-17 | 2015-01-22 | 中国矿业大学 | Coal ash solidification foam material used for prevention and treatment of spontaneous combustion of coal and preparation method therefor |
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| CN114159947B (en) * | 2021-11-29 | 2023-10-24 | 国家能源投资集团有限责任公司 | System for dredging goaf of water inlet of underground reservoir and reducing water salinity |
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| CN101787289B (en) | 2012-09-05 |
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