CN204783094U - Harmless liquid nitrogen system that administers coal field fire district - Google Patents
Harmless liquid nitrogen system that administers coal field fire district Download PDFInfo
- Publication number
- CN204783094U CN204783094U CN201520333257.9U CN201520333257U CN204783094U CN 204783094 U CN204783094 U CN 204783094U CN 201520333257 U CN201520333257 U CN 201520333257U CN 204783094 U CN204783094 U CN 204783094U
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- liquid nitrogen
- air
- coal
- field fire
- booster pump
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/10—Geothermal energy
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Abstract
The utility model provides a harmless liquid nitrogen system that administers coal field fire district, air cleaner (1), air compressor (2), air cooler (3), oil water separator (4), air drying clarifier (5), air separation column (6), liquid nitrogen storage tank (7), booster pump (8) are connected through the pipeline order, the incoming end of liquid nitrogen container car (9) and ground drilling (10) is connected with the output of booster pump (8), bottom surface drilling (10) and geothermal well (12) is located coal field fire district, the above -mentioned equipment of high -temperature steam electricity generation supply that geothermal power equipment (11) provided through geothermal well (12). The utility model discloses the discarded heat energy that utilizes coal field fire district to produce carries out geothermal power, and it is extravagant to reduce the energy, adopt the liquid nitrogen to prevent putting out a fire the technique and administer the coal field fire, rapid cooling, lazy fire -transmission district, and the liquid nitrogen stems from the nitrogen gas in the air, gets back to the air again, and cyclic utilization produces the liquid nitrogen, neither can lead to the fact the environmental disruption, realizes the cycle recycle of resource again.
Description
Technical field
The utility model relates to a kind of liquid nitrogen system of harmless improvement coal-field fire, belongs to colliery safety-security area.
Background technology
Coal is the main body energy of China, and energy security is related to the lifeblood of national stability and development.But China threatens maximum country by underground coal fire, the ground fire of China is classified as by American Media one of " the large continuation disaster in the world 5 ", and the coal that spontaneous combustion coal fire is burnt every year is equivalent to 20% of the whole energy-consuming of the U.S..The sixties in 20th century, the underground coal fire in the Inner Mongol still annoying China so far, and this coal fire about consumes 2,000 ten thousand tons of coal resources every year, exceedes German annual coal output.And underground coal fire also can threaten mining safety, wastes a large amount of heat resources, heavy damage ecological environment.
Coal-field fire fire-fighting technique main both at home and abroad has direct stripping method, water filling/slurry processes, gel-filled/foam method etc.Direct stripping method, directly exactly peels off by mechanical means, digs out fiery point, and this methods engineering amount is huge, takes time and effort, and destroys surface environment; Fire extinguishing of pouring water/starch is by a certain amount of mud of drill-pouring and water, can play starvation, reduce coal seam temperature, thus reach the object stoping the further oxidation and spontaneous combustion of coal.But because accurately cannot locate flame range high temperature dot position, and slurry range of scatter is limited, poor effect of therefore pouring water/starch; Gel and foam have certain mobility, better to goaf coal spontaneous combustion effect, but cost is higher, once bubble burst, flameproof effect can be had a greatly reduced quality.
Summary of the invention
The purpose of this utility model is to provide a kind of liquid nitrogen system of harmless improvement coal-field fire, in the efficient prevention and control avoiding realizing under the prerequisite destroying ecological environment coal-field fire.
For achieving the above object, the technical solution adopted in the utility model is:
A kind of liquid nitrogen system of harmless improvement coal-field fire, comprise air filter, air compressor, air cooler, oil water separator, air dry purifier, air separation column, liquid nitrogen storage, booster pump, liquid nitrogen tank car, surface drilling, geothermal power generating device and geothermal well, described air filter, air compressor, air cooler, oil water separator, air dry purifier, air separation column, liquid nitrogen storage, booster pump is linked in sequence by pipeline, liquid nitrogen tank car is connected with supercharging delivery side of pump with the incoming end of surface drilling, described bottom surface boring is positioned at coal-field fire, described geothermal well is positioned at coal-field fire, the high-temperature steam generating that geothermal power generating device is provided by geothermal well, the power output end of described geothermal power generating device connects air compressor respectively, air cooler, oil water separator, air dry purifier, air separation column, the power input end of liquid nitrogen storage and booster pump.
Further, the underground geographical environment different according to flame range and different flame range features, the type of described surface drilling includes vertical drilling, inclined drill and curve drilling.
Further, in order to improve the coupling between pressurized effect and equipment, described booster pump is large discharge reciprocating cryogenic liquid pump, boost range 0 ~ 10Mpa.
Further, in order to avoid prevention and control underground fire and geothermal energy extract between interference, the distance between described geothermal well and surface drilling is greater than 50 meters.
Compared with prior art, the technical scheme that the utility model provides is on-the-spot at the coal-field fire that arid is severe, apply the fire extinguishing characteristic of the heavily gas subsidence effect of liquid nitrogen, steam atomization effect, expansion drive oxygen effect, air in air is produced liquid nitrogen through overcompression purification, air separation, direct injection surface drilling, or load liquid nitrogen tank car, be fixed or movable high-efficiency cooling and fire extinguishing, the destruction of avoid huge excavation to peel off engineering causes a large amount of human and material resources, financial resources consumption and ecological environment; Liquid nitrogen range of scatter is large, and total flooding covers, and grouting draws ditch advantage remarkable relatively, and in liquid nitrogen producing process, water supply volume is less, is particularly suitable for the fire extinguishing engineering of arid or semiarid zone; The waste heat utilizing coal-field fire to produce carries out geothermal power generation, reduces energy waste; Adopt liquid nitrogen preventing and extinguishing fire technology to administer Coal Fire Fields, fast cooling, inerting flame range, realize the effect of high-effect fire-extinguishing, and liquid nitrogen is derived from the nitrogen in air, comes back to air, recycles and produces liquid nitrogen, both can not cause environmental disruption, realize again the cycling and reutilization of resource.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
In figure: 1, air filter, 2, air compressor, 3, air cooler, 4, oil water separator, 5, air dry purifier, 6, air separation column, 7, liquid nitrogen storage, 8, booster pump, 9, liquid nitrogen tank car, 10, surface drilling, 11, geothermal power generating device, 12, geothermal well.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is described in further detail.
As shown in Figure 1, a kind of liquid nitrogen system of harmless improvement coal-field fire, comprises air filter 1, air compressor 2, air cooler 3, oil water separator 4, air dry purifier 5, air separation column 6, liquid nitrogen storage 7, booster pump 8, liquid nitrogen tank car 9, surface drilling 10, geothermal power generating device 11 and geothermal well 12, described air filter 1, air compressor 2, air cooler 3, oil water separator 4, air dry purifier 5, air separation column 6, liquid nitrogen storage 7, booster pump 8 is linked in sequence by pipeline, liquid nitrogen tank car 9 is connected with supercharging delivery side of pump with the incoming end of surface drilling 10, described bottom surface boring 10 is positioned at coal-field fire, described geothermal well 12 is positioned at coal-field fire, the high-temperature steam generating that geothermal power generating device 11 is provided by geothermal well 12, the power output end of described geothermal power generating device 11 connects air compressor 2 respectively, air cooler 3, oil water separator 4, air dry purifier 5, air separation column 6, the power input end of liquid nitrogen storage 7 and booster pump 8.Described geothermal power generating device 11 comprises decontaminating separator, steam turbine, generator.From the high-temperature steam that geothermal well 12 takes out, through decontaminating separator, remove the various impurity that down-hole is brought, clean Steam Actuation steam turbine acting, and make electrical power generators.
Further, the underground geographical environment different according to flame range and different flame range features, the type of described surface drilling 14 includes vertical drilling, inclined drill and curve drilling.
Further, in order to improve the coupling between pressurized effect and equipment, described booster pump 9 is large discharge reciprocating cryogenic liquid pumps, boost range 0 ~ 10Mpa.
Further, in order to avoid prevention and control underground fire and geothermal energy extract between interference, the distance between described geothermal well 12 and surface drilling 10 is greater than 50 meters.
A method for harmless improvement coal-field fire, comprises the following steps:
A. the high-temperature steam taken out from geothermal well 12 drives geothermal power generating device 11, for electric energy supplied by air compressor 2, air cooler 3, oil water separator 4, air dry purifier 5, air separation column 6, liquid nitrogen storage 7 and booster pump 8;
B. the air in air is through air filter 1 dust out and mechanical admixture, then enter air compressor 2 and be compressed to required pressure, send into air cooler 3 and reduce air themperature, enter oil water separator 4 and air dry purifier 5 again, moisture, carbon dioxide, acetylene and other hydrocarbons in removing air, complete compression and the purification of air;
C. the air after purification enters air separation column 6, and complete air separation, obtain liquid nitrogen, the liquid nitrogen produced is stored in liquid nitrogen storage 7 by liquid nitrogen carrier pipe;
D., after the liquid nitrogen in liquid nitrogen storage 7 is transported to assigned address by Cryo Heat Insulation pipe after booster pump 8 supercharging, the surface drilling 10 of coal-field fire is injected by note liquid nitrogen pipe;
E. unnecessary liquid nitrogen loads liquid nitrogen tank car 9 by Cryo Heat Insulation pipe, is transported to place to use, coalfield and injects flame range by force feed equipment.
The design scheme that the utility model proposes is on-the-spot at severe coal-field fire, air in air is produced liquid nitrogen through overcompression purification, air separation, direct injection surface drilling, or load liquid nitrogen tank car, be fixed or movable high-efficiency cooling and fire extinguishing, the destruction of avoid huge excavation to peel off engineering causes a large amount of human and material resources, financial resources consumption and ecological environment; In liquid nitrogen producing process, water supply volume is less, is particularly suitable for the fire extinguishing engineering of arid or semiarid zone; The waste heat utilizing coal-field fire to produce carries out geothermal power generation, reduces energy waste; Adopt liquid nitrogen preventing and extinguishing fire technology to administer Coal Fire Fields, fast cooling, inerting flame range, realize the effect of high-effect fire-extinguishing, and liquid nitrogen is derived from the nitrogen in air, comes back to air, recycles and produces liquid nitrogen, both can not cause environmental disruption, realize again the cycling and reutilization of resource.
Claims (4)
1. the harmless liquid nitrogen system administering coal-field fire, is characterized in that, comprise air filter (1), air compressor (2), air cooler (3), oil water separator (4), air dry purifier (5), air separation column (6), liquid nitrogen storage (7), booster pump (8), liquid nitrogen tank car (9), surface drilling (10), geothermal power generating device (11) and geothermal well (12), described air filter (1), air compressor (2), air cooler (3), oil water separator (4), air dry purifier (5), air separation column (6), liquid nitrogen storage (7), booster pump (8) is linked in sequence by pipeline, liquid nitrogen tank car (9) is connected with the output of booster pump (8) with the incoming end of surface drilling (10), described surface drilling (10) is positioned at coal-field fire, described geothermal well (12) is positioned at coal-field fire, the high-temperature steam generating that geothermal power generating device (11) is provided by geothermal well (12), the power output end of described geothermal power generating device (11) connects air compressor (2) respectively, air cooler (3), oil water separator (4), air dry purifier (5), air separation column (6), the power input end of liquid nitrogen storage (7) and booster pump (8).
2. the liquid nitrogen system of a kind of harmless improvement coal-field fire according to claim 1, it is characterized in that, the type of described surface drilling (10) includes vertical drilling, inclined drill and curve drilling.
3. the liquid nitrogen system of a kind of harmless improvement coal-field fire according to claim 1, it is characterized in that, described booster pump (8) is large discharge reciprocating cryogenic liquid pump, boost range 0 ~ 10MPa.
4. the liquid nitrogen system of a kind of harmless improvement coal-field fire according to claim 1, it is characterized in that, the distance between described geothermal well (12) and surface drilling (10) is greater than 50 meters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520333257.9U CN204783094U (en) | 2015-05-21 | 2015-05-21 | Harmless liquid nitrogen system that administers coal field fire district |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520333257.9U CN204783094U (en) | 2015-05-21 | 2015-05-21 | Harmless liquid nitrogen system that administers coal field fire district |
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| Publication Number | Publication Date |
|---|---|
| CN204783094U true CN204783094U (en) | 2015-11-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520333257.9U Withdrawn - After Issue CN204783094U (en) | 2015-05-21 | 2015-05-21 | Harmless liquid nitrogen system that administers coal field fire district |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104912585A (en) * | 2015-05-21 | 2015-09-16 | 中国矿业大学 | Liquid nitrogen system and method for nondestructively governing fire area in coal field |
| CN110307129A (en) * | 2019-07-05 | 2019-10-08 | 南京工程学院 | The geother-mal power generation amount appraisal procedure of geothermal energy assistant coal complementary power generation system |
| WO2022011934A1 (en) * | 2020-07-16 | 2022-01-20 | 中国矿业大学 | Mobile liquid nitrogen fire extinguishing system for comprehensive pipe gallery and fire extinguishing method therefor |
-
2015
- 2015-05-21 CN CN201520333257.9U patent/CN204783094U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104912585A (en) * | 2015-05-21 | 2015-09-16 | 中国矿业大学 | Liquid nitrogen system and method for nondestructively governing fire area in coal field |
| CN110307129A (en) * | 2019-07-05 | 2019-10-08 | 南京工程学院 | The geother-mal power generation amount appraisal procedure of geothermal energy assistant coal complementary power generation system |
| CN110307129B (en) * | 2019-07-05 | 2020-08-04 | 南京工程学院 | Geothermal energy generating capacity evaluation method of geothermal energy auxiliary coal-fired complementary power generation system |
| WO2022011934A1 (en) * | 2020-07-16 | 2022-01-20 | 中国矿业大学 | Mobile liquid nitrogen fire extinguishing system for comprehensive pipe gallery and fire extinguishing method therefor |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20151118 Effective date of abandoning: 20171110 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20151118 Effective date of abandoning: 20171110 |