CN102350178B - Agent, device and technology for high-speed oxygen reduction in coal mine - Google Patents
Agent, device and technology for high-speed oxygen reduction in coal mine Download PDFInfo
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- CN102350178B CN102350178B CN 201110172150 CN201110172150A CN102350178B CN 102350178 B CN102350178 B CN 102350178B CN 201110172150 CN201110172150 CN 201110172150 CN 201110172150 A CN201110172150 A CN 201110172150A CN 102350178 B CN102350178 B CN 102350178B
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Abstract
The invention belongs to the technical field of prevention and control of fire hazards and gas disasters in a coal mine, and discloses an agent for high-speed oxygen reduction in a coal mine. When a main agent is pyrogallic acid, an adjuvant is potassium hydroxide or sodium hydroxide. When a main agent is sodium hydrosulfite, an adjuvant is sodium hydroxide. The invention also discloses a device for high-speed oxygen reduction in a coal mine. The device for high-speed oxygen reduction in a coal mine comprises a stirring apparatus of the agent for high-speed oxygen reduction in a coal mine, anatomizing apparatus of the agent for high-speed oxygen reduction in a coal mine, and an oxygen detection apparatus. The invention also discloses a technology for high-speed oxygen reduction in a coalmine. Through the technology for high-speed oxygen reduction in a coal mine, an oxygen reducing rate reaches 0.99% per minute. The device for high-speed oxygen reduction in a coal mine has a reasonable design, is easy for operation, is suitable for downhole operation, and is easy for processing. The technology for high-speed oxygen reduction in a coal mine has simple processes, and solves the downhole fire hazard and gas calamity control problems that oxygen supply in a goaf is improved because of ventilation reinforcement and gas discharge, and thus a natural fire hazard happens easily; and if air leak is controlled, gas accumulation is caused and a gas blast danger level is improved.
Description
Technical field
The invention belongs to colliery underground fire and gas diaster prevention and control technical field, particularly fast prompt drop oxygen agent and fall oxygen device and technology under the coal mine.
Background technology
There is the dual hidden danger of methane accumulation and spontaneous fire in distinguished and admirable not smooth zone such as coal mine gob, and the often conflict mutually of the improvement method of two kinds of hidden danger, and difficulty of governance is very big.If add the forced ventilation firedamp drainage, can increase the goaf oxygen supply, cause spontaneous fire easily; Then can cause methane accumulation if control is leaked out, increase the gas explosion degree of danger, this is insoluble problem in the Safety of Coal Mine Production.
Under the condition of goaf fire and gas hazard coexistence, the method for administering both at home and abroad mainly is to take direct fire extinguishing, sealing to isolate and inject methods such as noble gas fire extinguishing at present, but causes that the mine gas explosion accident happens occasionally.Be example with Chen Jiashan ore deposit, Tongchuan fully mechanized coal face, this working face gob fire gas that ignites, because gas combustion is rapid, directly fire extinguishing failure, the fire sealing of having at last adopts DQ-500 noble gas generating means to inject noble gas to the enclosed area then and puts out a fire.But since having sealed in 13 hours, recurred blast tens times.The 13rd hour, because brisance is bigger, explosion wave was washed open airtight.Cause this phenomenon reason be that goaf gas concentration raises after the fire area sealing, has reached the blast boundary line; And this moment oxygen concentration also in blast limit, therefore will inevitably blast.Though say in theory, inert gas injecting can reduce goaf oxygen concentration and gas density, and in actual applications, the malleation during owing to the injection noble gas is driven effect, causes methane accumulation easily, causes local gas concentration to raise, and can blast equally.Be badly in need of finding new technical scheme for this reason, solve if add the forced ventilation firedamp drainage, can increase the goaf oxygen supply, cause spontaneous fire easily; Then can cause methane accumulation if control is leaked out, increase the gas explosion degree of danger.
Summary of the invention
Invent under a kind of coal mine fast prompt drop oxygen agent and fall oxygen device and technology.This technical matters has solved ventilation firedamp drainage (or extraction) effectively and has caused the coal oxidation spontaneous combustion easily, and control is leaked out and then caused the difficult problem of methane accumulation easily.In addition, fall the oxygen that the oxygen agent absorbs the citadel by atomizing, namely can reduce oxygen content fast, can not produce the gas compression again, drive effect, thereby can avoid accident such as gas explosion.The control that this Study on Technology is developed as mine fire and gas provides brand-new solution.
The technical scheme of technical problem to be solved by this invention is: fast prompt drop oxygen agent is provided under a kind of coal mine and falls oxygen device and technology.
Fast prompt drop oxygen agent under a kind of coal mine, characteristics are that it comprises that host Jiao property does not have assorted son acid (C
6H
6O
3), assistant potassium hydroxide (KOH), water (H
2O), the concentration of proportioning assorted son acid for Jiao's property does not have is that the concentration of 0.05 ~ 0.6 mol/kg, potassium hydroxide is 0.1 ~ 0.6 mol/kg.
Fast prompt drop oxygen agent under a kind of coal mine, characteristics are that it comprises that host Jiao property does not have assorted son acid (C
6H
6O
3), assistant NaOH (NaOH), water (H
2O), the concentration of proportioning assorted son acid for Jiao's property does not have is that 0.05 ~ 0.6mol/kg, concentration sodium hydroxide are 0.1 ~ 0.6 mol/kg.
Fast prompt drop oxygen agent under a kind of coal mine, characteristics are that it comprises host doubly-linked sodium sulfite (Na
2S
2O
4), assistant NaOH (NaOH), water (H
2O), proportioning is that the concentration of doubly-linked sodium sulfite is that 0.015 ~ 0.6 mol/kg, concentration sodium hydroxide are 0.1 ~ 0.6 mol/kg.
Fast prompt drop oxygen device under a kind of coal mine, it comprises that prompt drop oxygen agent atomising device, detecting oxygen device constitute soon under fast prompt drop oxygen agent batching agitating device, the coal mine under the coal mine.Characteristics are that fast prompt drop oxygen agent batching agitating device is made of the blade mixer that mixer flame-proof switch control stirring explosion separation motor has liquid reserve tank and charging aperture under the coal mine, fast prompt drop oxygen agent atomising device is made of by transfer pipeline connection atomizer high-pressure plunger pump flame-proof switch control atomizing explosion separation motor drive high-pressure plunger pump under the coal mine, and high-pressure plunger pump is provided with feed liquor, discharge opeing, pressure regulating valve.
Wherein: detecting oxygen device comprises that oxygen analyser connects oxygen sensor.
Wherein: atomizer is placed by order in the outer cover of atomizer and is connected spray boom behind the atomizing piece, spray chamber, cyclone, spring of band orifice and constitute, and has the eddy flow groove on the cyclone, and atomizing piece has the taper chamber.
Fast prompt drop oxygen technology under a kind of coal mine, characteristics are down-hole fast prompt drop oxygen device main body is partly placed tunnel in addition, range of atomization, and oxygen sensor, atomizer suspension type are arranged in the range of atomization, and the range of atomization is carried out airtight formation citadel with fire dam; Add water to charging aperture according to fast prompt drop oxygen agent proportioning under the coal mine, add fast prompt drop oxygen agent host, assistant under the coal mine again, start under the coal mine behind the fast prompt drop oxygen agent batching agitating device, start atomising device, utilize detecting oxygen device and mine gas analytical system that parameters such as citadel oxygen content, gas are carried out tracking observation.Detect the citadel oxygen content and be down to 5% and can stop spraying when following, if the residue soup is arranged in the liquid case, then need till whole the spray.After the operation of spray drop oxygen is finished, inject clear water at charging aperture, start high-pressure plunger pump and clean fast prompt drop oxygen device flow passage components, and with residue oxygen agent host is fallen, assistant is taken down-hole and properly sealing keeping, anti-oxidation out of.
Beneficial effect of the present invention: realized that at coal mine gob or citadel oxygen falls in chemical liquid, fallen oxygen speed and can reach 0.99%/min; Fast prompt drop oxygen device is reasonable in design, simple to operate under the coal mine, is fit to underground work, and product is easy to processing; Fast prompt drop oxygen technology is simple under the coal mine, has solved to add the forced ventilation firedamp drainage, can increase the goaf oxygen supply, causes spontaneous fire easily; Then methane accumulation be can cause if control is leaked out, the colliery underground fire of gas explosion degree of danger and the difficult problem of gas diaster prevention and control increased.
Description of drawings
The invention will be further described below in conjunction with the drawings and specific embodiments.Protection scope of the present invention will be not limited only to the statement of following content.
Fig. 1 is fast prompt drop oxygen technological principle schematic diagram under fast prompt drop oxygen device and the coal mine under the coal mine of the present invention;
Fig. 2 is the atomizer structure schematic diagram of fast prompt drop oxygen device under the coal mine of the present invention.
The specific embodiment
Accompanying drawing number
1. charging apertures among the figure, 2. the blade mixer 3. stirs explosion separation motor, 4. mixer flame-proof switch, 5. high-pressure plunger pump flame-proof switch, 6. oxygen analyser, 7. fire dam, 8. oxygen sensor, 9. citadel, 10. atomizer, 11. tunnels, 12. transfer pipelines, 13. high-pressure plunger pump, 14. atomizing explosion separation motors, 15. outer cover of atomizer, 16. spray chambers, 17. orifice, 18. eddy flow grooves, taper chambers 19., 20. atomizing pieces, 21. cyclone, 22. springs, 23. spray booms.
First embodiment
Fast prompt drop oxygen agent under a kind of coal mine, it comprises that host Jiao property does not have the acid of assorted son, assistant potassium hydroxide, water, the concentration of proportioning assorted son acid for Jiao's property does not have is that the concentration of 0.2 mol/kg, potassium hydroxide is 0.6 mol/kg.Wherein host Jiao property does not have the sour consumption 139kg of assorted son, assistant potassium hydroxide 185kg, water 5192kg, preparation 5.5m
3Coal mine under fast prompt drop oxygen agent;
Fast prompt drop oxygen device under a kind of coal mine of using, referring to Fig. 1, Fig. 2, it comprises that prompt drop oxygen agent atomising device, detecting oxygen device constitute soon under fast prompt drop oxygen agent batching agitating device, the coal mine under the coal mine.Fast prompt drop oxygen agent batching agitating device is made of the blade mixer 2 that mixer flame-proof switch 4 control stirring explosion separation motors 3 have liquid reserve tank and charging aperture 1 under the coal mine, fast prompt drop oxygen agent atomising device is made of by transfer pipeline 12 connection atomizers 10 high-pressure plunger pump flame-proof switch 5 control atomizing explosion separation motors 14 drive high-pressure plunger pumps 13 under the coal mine, high-pressure plunger pump 13 is provided with feed liquor, discharge opeing, pressure regulating valve, wherein: detecting oxygen device comprises that oxygen analyser 6 connects oxygen sensor 8, wherein: atomizer 10 is placed the atomizing piece 20 of band orifice 17 by order in the outer cover of atomizer 15, spray chamber 16, cyclone 21, spring 22 backs connect spray boom 23 and constitute, have eddy flow groove 18 on the cyclone 21, atomizing piece 20 has taper chamber 19.
Fast prompt drop oxygen technology under a kind of coal mine of using, referring to Fig. 1, specifically be down-hole fast prompt drop oxygen device main body is partly placed tunnel 11 in addition, range of atomization, oxygen sensor 8, atomizer 10 suspension types are arranged in the range of atomization, and the range of atomization is carried out airtight formation citadel 9 with fire dam 7; Add water 5192kg according to fast prompt drop oxygen agent proportioning under the coal mine to charging aperture 1, add under the coal mine fast prompt drop oxygen agent host Jiao property again and do not have the sour consumption 139kg of assorted son, assistant potassium hydroxide 185kg, pressing mixer flame-proof switch 4 starts under the coal mine behind the fast prompt drop oxygen agent batching agitating device, press high-pressure plunger pump flame-proof switch 5 and start atomising device, utilize detecting oxygen device and mine gas analytical system that parameters such as citadel oxygen content, gas are carried out tracking observation.Stop spraying when detecting when citadel 9 oxygen contents are down to 4.9%, a small amount of residue soup is arranged in the liquid case, it has all been sprayed.After the operation of spray drop oxygen is finished, inject clear water at charging aperture 1, start high-pressure plunger pump and clean fast prompt drop oxygen device flow passage components, and with residue oxygen agent host is fallen, assistant is taken down-hole and properly sealing keeping, anti-oxidation out of.
In Determination of Oxygen, detecting oxygen device has used AQX-1 type numeral oxygen concentration instrument.
Wherein fast prompt drop oxygen actual experiment running parameter is as follows under the coal mine: system's atomizing operating pressure is 5 ~ 6MPa; Working flow is 5.0m
3/ h; Temperature is 26 ℃ in the tunnel; Humidity is 67% in the tunnel; The airtight internal volume 75m in tunnel
3Falling oxygen speed is 0.99%/min ~ 0.10%/min.Oxygen concentration drops to 4.9% by 20.9% in the tunnel.
Second embodiment
Fast prompt drop oxygen agent under a kind of coal mine, it comprises that host Jiao property does not have the acid of assorted son, assistant NaOH, water, the concentration of proportioning assorted son acid for Jiao's property does not have is that 0.2 mol/kg, concentration sodium hydroxide are 0.6 mol/kg.Wherein host Jiao property does not have the sour consumption 139kg of assorted son, assistant NaOH 132kg, water 5245kg, preparation 5.5m
3Coal mine under fast prompt drop oxygen agent;
Fast prompt drop oxygen device under a kind of coal mine of using, referring to Fig. 1, Fig. 2, it comprises that prompt drop oxygen agent atomising device, detecting oxygen device constitute soon under fast prompt drop oxygen agent batching agitating device, the coal mine under the coal mine.Fast prompt drop oxygen agent batching agitating device is made of the blade mixer 2 that mixer flame-proof switch 4 control stirring explosion separation motors 3 have liquid reserve tank and charging aperture 1 under the coal mine, fast prompt drop oxygen agent atomising device is made of by transfer pipeline 12 connection atomizers 10 high-pressure plunger pump flame-proof switch 5 control atomizing explosion separation motors 14 drive high-pressure plunger pumps 13 under the coal mine, high-pressure plunger pump 13 is provided with feed liquor, discharge opeing, pressure regulating valve, wherein: detecting oxygen device comprises that oxygen analyser 6 connects oxygen sensor 8, wherein: atomizer 10 is placed the atomizing piece 20 of band orifice 17 by order in the outer cover of atomizer 15, spray chamber 16, cyclone 21, spring 22 backs connect spray boom 23 and constitute, have eddy flow groove 18 on the cyclone 21, atomizing piece 20 has taper chamber 19.
Fast prompt drop oxygen technology under a kind of coal mine of using, referring to Fig. 1, specifically be down-hole fast prompt drop oxygen device main body is partly placed tunnel 11 in addition, range of atomization, oxygen sensor 8, atomizer 10 suspension types are arranged in the range of atomization, and the range of atomization is carried out airtight formation citadel 9 with fire dam 7; Add water 5245kg according to fast prompt drop oxygen agent proportioning under the coal mine to charging aperture 1, add under the coal mine fast prompt drop oxygen agent host Jiao property again and do not have the sour consumption 139kg of assorted son, assistant NaOH 132kg, pressing mixer flame-proof switch 4 starts under the coal mine behind the fast prompt drop oxygen agent batching agitating device, press high-pressure plunger pump flame-proof switch 5 and start atomising device, utilize detecting oxygen device and mine gas analytical system that parameters such as citadel oxygen content, gas are carried out tracking observation.Stop spraying when detecting when citadel 9 oxygen contents are down to 4.6%, a small amount of residue soup is arranged in the liquid case, it has all been sprayed.After the operation of spray drop oxygen is finished, inject clear water at charging aperture 1, start high-pressure plunger pump and clean fast prompt drop oxygen device flow passage components, and with residue oxygen agent host is fallen, assistant is taken down-hole and properly sealing keeping, anti-oxidation out of.
In Determination of Oxygen, detecting oxygen device has used AQX-1 type numeral oxygen concentration instrument.
Wherein fast prompt drop oxygen actual experiment running parameter is as follows under the coal mine: system's atomizing operating pressure is 5 ~ 6MPa; Working flow is 5.0m
3/ h; Temperature is 25 ℃ in the tunnel; Humidity is 66% in the tunnel; The airtight internal volume 75m in tunnel
3Falling oxygen speed is 0.97%/min ~ 0.09%/min.Oxygen concentration drops to 4.6% by 20.7% in the tunnel.
The 3rd embodiment
Fast prompt drop oxygen agent under a kind of coal mine, it comprises host doubly-linked sodium sulfite, assistant NaOH, water, proportioning is that the concentration of doubly-linked sodium sulfite is that 0.2 mol/kg, concentration sodium hydroxide are 0.4 mol/kg.Doubly-linked sodium sulfite consumption 288kg wherein, NaOH 132kg, water 7860kg, preparation 8.3m
3Coal mine under fast prompt drop oxygen agent;
Fast prompt drop oxygen device under a kind of coal mine of using, referring to Fig. 1, Fig. 2, it comprises that prompt drop oxygen agent atomising device, detecting oxygen device constitute soon under fast prompt drop oxygen agent batching agitating device, the coal mine under the coal mine.Fast prompt drop oxygen agent batching agitating device is made of the blade mixer 2 that mixer flame-proof switch 4 control stirring explosion separation motors 3 have liquid reserve tank and charging aperture 1 under the coal mine, fast prompt drop oxygen agent atomising device is made of by transfer pipeline 12 connection atomizers 10 high-pressure plunger pump flame-proof switch 5 control atomizing explosion separation motors 14 drive high-pressure plunger pumps 13 under the coal mine, high-pressure plunger pump 13 is provided with feed liquor, discharge opeing, pressure regulating valve, wherein: detecting oxygen device comprises that oxygen analyser 6 connects oxygen sensor 8, wherein: atomizer 10 is placed the atomizing piece 20 of band orifice 17 by order in the outer cover of atomizer 15, spray chamber 16, cyclone 21, spring 22 backs connect spray boom 23 and constitute, have eddy flow groove 18 on the cyclone 21, atomizing piece 20 has taper chamber 19.
Fast prompt drop oxygen technology under a kind of coal mine of using, referring to Fig. 1, specifically be down-hole fast prompt drop oxygen device main body is partly placed tunnel 11 in addition, range of atomization, oxygen sensor 8, atomizer 10 suspension types are arranged in the range of atomization, and the range of atomization is carried out airtight formation citadel 9 with fire dam 7; Add water 7860kg according to fast prompt drop oxygen agent proportioning under the coal mine to charging aperture 1, add fast prompt drop oxygen agent host doubly-linked sodium sulfite consumption 288kg, assistant NaOH 132kg under the coal mine again, pressing mixer flame-proof switch 4 starts under the coal mine behind the fast prompt drop oxygen agent batching agitating device, press high-pressure plunger pump flame-proof switch 5 and start atomising device, utilize detecting oxygen device and mine gas analytical system that parameters such as citadel oxygen content, gas are carried out tracking observation.When being down to 4.7%, citadel 9 oxygen contents stop spraying when detecting, there is not the residue soup in the liquid case, after the operation of spray drop oxygen is finished, inject clear water at charging aperture 1, start high-pressure plunger pump and clean fast prompt drop oxygen device flow passage components, and oxygen agent host, assistant are fallen in residue take down-hole and properly sealing keeping, anti-oxidation out of.
In Determination of Oxygen, detecting oxygen device has used AQX-1 type numeral oxygen concentration instrument.
Wherein fast prompt drop oxygen actual experiment running parameter is as follows under the coal mine: system's atomizing operating pressure is 5 ~ 6MPa; Working flow is 5.0m
3/ h; Temperature is 26 ℃ in the tunnel; Humidity is 65% in the tunnel; The airtight internal volume 75m in tunnel
3Falling oxygen speed is 0.52%/min ~ 0.05%/min.Oxygen concentration drops to 4.7% by 20.7% in the tunnel.
Practical application shows, host is that fast prompt drop oxygen agent and host can drop to the oxygen in the citadel, down-hole below 5% by spray art for prompt drop oxygen agent soon under the coal mine of Jiao's property does not have assorted son acid under the coal mine of doubly-linked sodium sulfite.Under the coal mine fast prompt drop oxygen agent oxygen speed is fallen and ability is subjected to factor affecting such as liquor strength, spray intensity, environment temperature.Spray drop oxygen speed also constantly descends along with the reduction of the oxygen concentration of down-hole confined space.Under the identical situation of conditions such as liquor strength, host is that fast prompt drop oxygen agent is fallen oxygen speed and ability than the agent of prompt drop oxygen is low soon under the coal mine of host for Jiao's property does not have assorted son acid under the coal mine of doubly-linked sodium sulfite.
Claims (2)
1. fast prompt drop oxygen device under the coal mine, it comprises fast prompt drop oxygen agent batching agitating device under the coal mine, fast prompt drop oxygen agent atomising device under the coal mine, detecting oxygen device constitutes, be characterised in that: fast prompt drop oxygen agent batching agitating device is made of the blade mixer that mixer flame-proof switch control stirring explosion separation motor has liquid reserve tank and charging aperture under the coal mine, fast prompt drop oxygen agent atomising device is made of by transfer pipeline connection atomizer high-pressure plunger pump flame-proof switch control atomizing explosion separation motor drive high-pressure plunger pump under the coal mine, high-pressure plunger pump is provided with feed liquor, discharge opeing, pressure regulating valve, detecting oxygen device comprises that oxygen analyser connects oxygen sensor, atomizer is placed the atomizing piece of band orifice by order in the outer cover of atomizer, spray chamber, cyclone, connecting spray boom behind the spring constitutes, have the eddy flow groove on the cyclone, atomizing piece has the taper chamber, and fast prompt drop oxygen agent comprises that host Jiao property does not have assorted son acid under the coal mine, assistant potassium hydroxide (KOH), water (H
2O), the concentration of proportioning assorted son acid for Jiao's property does not have is that the concentration of 0.05 ~ 0.6 mol/kg, potassium hydroxide is 0.1 ~ 0.6 mol/kg.
2. fast prompt drop oxygen technology under the coal mine of fast prompt drop oxygen device under the coal mine of quoting claim 1, be characterised in that: down-hole fast prompt drop oxygen device main body is partly placed tunnel in addition, range of atomization, oxygen sensor, the atomizer suspension type is arranged in the range of atomization, the range of atomization is carried out airtight formation citadel with fire dam, add water to charging aperture according to fast prompt drop oxygen agent proportioning under the coal mine, add fast prompt drop oxygen agent host under the coal mine again, assistant, start under the coal mine behind the fast prompt drop oxygen agent batching agitating device, start atomising device, utilize detecting oxygen device and mine gas analytical system to the citadel oxygen content, the gas parameter is carried out tracking observation, detecting the citadel oxygen content is down to 5% and stops to spray when following, if the residue soup is arranged in the liquid case, till then needing all to have sprayed, after the operation of spray drop oxygen is finished, inject clear water at charging aperture, start high-pressure plunger pump and clean fast prompt drop oxygen device flow passage components, and oxygen agent host fallen in residue, assistant is taken down-hole and properly sealing keeping, anti-oxidation out of.
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| CN102937033B (en) * | 2012-12-03 | 2014-10-15 | 中国矿业大学 | Efficient nitrogen injection and fire extinguishing system for mining |
| CN108180033B (en) * | 2017-11-30 | 2020-05-15 | 中国矿业大学(北京) | Automatic regulating and controlling equipment for gas release in closed goaf |
| CN111167040B (en) * | 2020-01-02 | 2021-03-02 | 上海凯斯特民防设备有限公司 | Civil air defense engineering ventilation system |
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|---|---|---|---|---|
| CN101089367A (en) * | 2007-06-06 | 2007-12-19 | 北京海安高科消防技术有限公司 | Gas dust integral preventing system for coal mine |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101089367A (en) * | 2007-06-06 | 2007-12-19 | 北京海安高科消防技术有限公司 | Gas dust integral preventing system for coal mine |
Non-Patent Citations (2)
| Title |
|---|
| 关于氮气中氧含量测定的吸收剂;胡学文;《化工时刊》;19981231;第12卷(第2期);第1、2节 * |
| 胡学文.关于氮气中氧含量测定的吸收剂.《化工时刊》.1998,第12卷(第2期), |
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