CN1740628A - Coal mine gas and fine spray mixed conveying method and apparatus - Google Patents
Coal mine gas and fine spray mixed conveying method and apparatus Download PDFInfo
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- CN1740628A CN1740628A CN 200510044290 CN200510044290A CN1740628A CN 1740628 A CN1740628 A CN 1740628A CN 200510044290 CN200510044290 CN 200510044290 CN 200510044290 A CN200510044290 A CN 200510044290A CN 1740628 A CN1740628 A CN 1740628A
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Abstract
The invention relates to coal mine gas and fine spray mixed conveying method and apparatus. It belongs to coal mine low-density gas long-distance safety conveying field. It is technological process is: after coal mine gas is extracted to ground surface via back-fire relief valve, if goes into gas pipeline, then one path: a few is drained via drain valve and gas delivering valve. It goes into fine spray generator for mixing, then via dewatering device, back-fire relief valve, reaches to gas power generating station as fuel for power generation. Water sprayed from dewatering device for circulating use. The apparatus mainly includes: back-fire relief valve, gas pipeline, drain valve, gas valve, fine spray generator, dewatering device, filter, water storing tank, water circulating pump, water pipeline, spraying nozzle and connecting flange.
Description
(1) technical field
The invention belongs to coal mine gas low density length apart from the safe transport technical field, relate to the explosion-proof and fine water fog generator of coal mine gas, particularly is a kind of coal mine gas and fine spray mixed conveying method and device.
(2) background technique
Coal mine gas is called as the mine disaster chief culprit, seriously jeopardizes miner's life and property safety, must in time take out to effluxing.According to statistics, national colliery amounts to pure methane about 80 billion cubic meters to the direct exhausting low-concentration gas of atmosphere (methane concentration 5～25%) every year.If as fuel used to generate electricity, can obtain 24,000,000,000 degree electric energy every year.This is not only the huge waste of the energy, and serious environment pollution.The coal mine gas emptying is caving-in bash, and pump drainage will the threat to life property safety, and gas is pumped to ground, be transported to the power station if will grow distance, then very easily blast accident, especially methane concentration are 5～15%, be the most dangerous range of explosion, so have in the coal mine well port emptying.At present,, there are not back-fire relief, fire prevention measure on the way though solved methane concentration in the gas conveying technology problem more than 25% both at home and abroad, still not too safe.At fire-fighting domain, by retrieval, the domestic in recent years patent documentation that the fine mist fire-fighting aspect is also arranged.For example, fire-fighting is with ultra-fine water liquid atomization device (99258444.2), thin water smoke automatic fire extinguisher (01272646.4), fine water fog generator (02148569.0).Fine mist fire-fighting mechanism, the one, cooling, thin water fog particle is vaporized easily, a large amount of heat absorptions, cooling rapidly stops burning; The 2nd, dilution, thin water smoke evaporates rapidly, becomes gas phase by liquid phase, suppresses flame.Inspire owing to be subjected to fine mist fire-fighting mechanism, make coal mine gas length the breakthrough of novelty arranged, formed this autonomous innovation achievement apart from the safe transport technology.
(3) summary of the invention
Purpose of the present invention just is that development provides a kind of coal mine gas and fine spray mixed conveying method and device, coal mine light concentration mash gas safety, convenience, grow apart from being transported to the generating that acts as a fuel of gas electricity station, or does other purposes.
Above-mentioned purpose is realized by following technical proposals:
Coal mine gas and fine spray mixed conveying method, its process characteristic is: coal mine gas is pumped to ground through water ring vaccum pump earlier, enters gas tube through water-sealed type flame trap and dry type flame trap again.Gas divides two-way then, the a small amount of emptying of one route bypass exhaust-valve, another road enters in the fine water fog generator mixing tube through flame trap and gas valve, after thin water smoke mixes, dewater through water separator again, methane gas after the dehydration is again through flame trap, dehydrater, arrives the generating that acts as a fuel of gas electricity unit at last.The water of being separated by water separator returns water storage box after filtering, squeezes into waterpipe by water-circulating pump again, and forms thin water smoke once more by spraying nozzle, and so circulation is gone down.
Coal mine gas comprises with thin water smoke mix conveying appliance: water ring vaccum pump, water-sealed type flame trap, dry type flame trap, gas tube, exhaust-valve, gas valve, fine water fog generator, water separator, dehydrater and adpting flange etc.The import of water ring vaccum pump connects coal mine gas pump drainage pipeline, and its outlet connects the water-sealed type flame trap, connects the dry type flame trap again, connects gas tube again.Gas tube divides two-way, and one the tunnel connects exhaust-valve with flange; Another road connects water-sealed type flame trap and dry type flame trap with flange, connects gas valve with flange again, and gas valve connects the mixing duct of fine water fog generator again with flange, connect water separator with flange again.Water separator connects dry type flame trap, dehydrater, dry type flame trap and gas electricity unit more successively.
Above-mentioned fine water fog generator is made up of gas and thin water smoke mixing duct, spraying nozzle, water smoke control valve, waterpipe, water-circulating pump, flowmeter, water storage box, water supply tank, filter and water separator.Spraying nozzle is distributed in the mixing duct upper top vertically.A water smoke control valve is installed between each spraying nozzle and the waterpipe.Water-circulating pump and flowmeter are connected to the water outlet of water storage box, and water supply tank is communicated with water storage box.Between the water intake of water storage box and the water outlet of water separator filter is installed.Drain valve is arranged at the bottom of water separator.
After implementing according to technique scheme, the low concentration gas in the coal mine can safety, convenient, long distance is transported to the generating that acts as a fuel of gas electricity station, or does other purposes.Thereby the end coal mine gas can only make it become precious by evil in the history of pithead emptying, is fully used as a kind of clear energy sources, and has reduced the pollution to atmosphere, and its economic benefit and social benefit are considerable.
According to the preliminary statistics, China underground 2000 meters with interior about 30,000,000,000,000～35 tcms of shallow gas resources total amount, suitable with national natural gas resource total amount.It is reported a scholarly forecast, the China's natural gas resource was only enough exploited 30～50 years.Therefore, the continue energy of coal mine gas as rock gas being developed, realize the industrialization of gas comprehensive utilization as early as possible, be not only and solve the task of top priority that China's energy continues, also is the task of top priority of setting up conservation-minded society.The invention solves coal mine light concentration mash gas length apart from the safe transport technical barrier, support for this task of top priority provides strong innovative technology exactly.
(4) description of drawings
Accompanying drawing 1 is a delivery technology system journey skeleton diagram of the present invention.
Accompanying drawing 2 is that feedway of the present invention is formed overall schematic.
(5) embodiment
Embodiment of accompanying drawings:
Shown in Fig. 1,2, technological process of the present invention is: coal mine gas is pumped to ground through water ring vaccum pump 1 earlier, enters gas tube 4 through water-sealed type flame trap 2 and dry type flame trap 3 again.Gas divides two-way then, a route bypass exhaust-valve 18 a small amount of emptyings; Another road enters in the fine water fog generator mixing duct 8 through flame trap 5,6 and gas valve 7, after thin water smoke mixes, again through water separator 13 dehydrations.Methane gas after the dehydration is again through flame trap 14,16 and dehydrater 15, arrives gas electricity unit 17 generating that acts as a fuel at last.The water of being separated by water separator 13 returns water storage box 20 after filtering through filter 19, squeezes into waterpipe 11 by water-circulating pump 23 again, and forms thin water smoke once more by spraying nozzle 9, and so circulation is gone down.
By shown in Figure 2, feedway of the present invention comprises: water ring vaccum pump 1, water-sealed type flame trap 2 and 5, dry type flame trap 3,6,14 and 16, gas tube 4, exhaust-valve 18, gas valve 7, fine water fog generator, water separator 13, dehydrater 15 and adpting flange 24.The import of water ring vaccum pump 1 connects coal mine gas pump drainage pipeline, and its outlet connects water-sealed type flame trap 2, connects dry type flame trap 3 again, connects gas tube 4 again.4 fens two-way of gas tube, the one tunnel uses flange 24 to connect exhaust-valves 18; Another road connects gas valve 7 with flange 24, and gas valve 7 connects fine water fog generator mixing duct 8 with flange again, connects water separator 13 with flange 24 again.Water separator 13 is again according to connecting dry type flame trap 14, dehydrater 15, dry type flame trap 16 and gas electricity unit 17.
By shown in Figure 2, fine water fog generator is the core of this device, is made up of mixing duct 8, spraying nozzle 9, water smoke control valve 10, waterpipe 11, water-circulating pump 23, flowmeter 22, water storage box 20, water supply tank 21, filter 19 and water separator 13.Spraying nozzle 9 is distributed in mixing duct 8 upper tops vertically.A water smoke control valve 10 is installed between each spraying nozzle 9 and the waterpipe 11.Water-circulating pump 23 and flowmeter 22 are connected to the water outlet that holds case 20, and water supply tank 21 is communicated with water storage box 20.Filter 19 is installed between the water outlet of the water intake of water storage box 20 and water separator 13.Drain valve 12 is arranged at the bottom of water separator 13.
In the accompanying drawing 2, exhaust-valve 18 has two main effects, and the one, regulate the pressure in the gas tube 4, the 2nd, when mix conveying appliance need be changed component, close gas valve 7, open simultaneously or open big exhaust-valve 18 automatically, avoid water ring vaccum pump 1 to produce too high back pressure.Flame trap 2 and 3 effect are, just in case mix conveying appliance generation tempering, can prevent the down-hole accident of blasting.Flame trap 14 and 16 effect are to stop tempering and 17 safe operations of protection gas electricity unit.The length of mixing tube 8 is by gas fed distance decision, can be tens meters, hundreds of rice or several kilometers.The particle diameter of thin water smoke is generally 400 microns, by the structural type decision of hydraulic pressure, flow, water smoke control valve 10 and the spraying nozzle 9 of water-circulating pump 23.Water cycle is used, and only needs small amount of supplemental.
Claims (3)
1. coal mine gas and fine spray mixed conveying method, its process characteristic is: coal mine gas is pumped to ground through water ring vaccum pump (1) earlier, enter gas tube (4) through water-sealed type flame trap (2) and dry type flame trap (3) again, gas tube divides two-way then, the a small amount of emptying of one route bypass exhaust-valve (18), another road is through flame trap (5), (6) and gas valve (7) enter in the fine water fog generator mixing duct (8), after thin water smoke mixes, dewater through water separator (13) again, methane gas after the dehydration is again through flame trap (14), (16) and dehydrater (15), arrive gas electricity unit (17) generating that acts as a fuel at last; The water of being separated by water separator (13) returns water storage box (20) after filtering through filter (19), squeezes into waterpipe (11) by water-circulating pump (23) again, and forms thin water smoke once more by spraying nozzle (9), and so circulation is gone down.
2. a coal mine gas and thin water smoke mix conveying appliance is characterized in that comprising water ring vaccum pump (1), water-sealed type flame trap (2) and (5), dry type flame trap (3), (6), (14) and (16), gas tube (4), exhaust-valve (18), gas valve (7), fine water fog generator, water separator (13), dehydrater (15) and adpting flange (24); The import of water ring vaccum pump (1) connects coal mine gas pump drainage pipeline, its outlet connects water-sealed type flame trap (2), connect dry type flame trap (3) again, connect gas tube (4) again, gas tube (4) divides two-way, one the tunnel connects row with flange (24) controls valve (18), another road connects water-sealed type flame trap (5) and dry type flame trap (6) with flange (24), use flange (24) to connect gas valve (7) again, gas valve (7) uses flange (24) to connect water separator (13) again, and water separator (13) connects dry type flame trap (14) more successively, dehydrater (15), dry type flame trap (16) and gas electricity unit (17).
3. coal mine gas according to claim 2 and thin water smoke mix conveying appliance, it is characterized in that fine water fog generator is by mixing duct (8), spraying nozzle (9), water smoke control valve (10), waterpipe (11), water-circulating pump (23), flowmeter (22), water storage box (20), water supply tank (21), filter (19) and water separator (13) are formed, spraying nozzle (9) is distributed in mixing duct (8) upper top vertically, a water smoke control valve (10) is installed between each spraying nozzle (9) and the water pipeline (11), water-circulating pump (23) and flowmeter (22) are connected to the water outlet of water storage box (20), water supply tank (21) is communicated with water storage box (20), filter (19) is installed between the water outlet of the water intake of water storage box (20) and water separator (13), and drain valve (12) is arranged at the bottom of water separator (13).
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2005100442900A CN1318794C (en) | 2005-08-23 | 2005-08-23 | Coal mine gas and fine spray mixed conveying method and apparatus |
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| CNB2005100442900A CN1318794C (en) | 2005-08-23 | 2005-08-23 | Coal mine gas and fine spray mixed conveying method and apparatus |
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| CN1740628A true CN1740628A (en) | 2006-03-01 |
| CN1318794C CN1318794C (en) | 2007-05-30 |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010025688A1 (en) * | 2008-09-07 | 2010-03-11 | 胜利油田胜利动力机械集团有限公司 | Piston-reciprocating type low-concentration gas generator group |
| CN101158286B (en) * | 2007-11-15 | 2010-07-07 | 淮南矿业(集团)有限责任公司 | Coal mine light concentration mash gas safety conveying method and conveying system |
| CN101832428A (en) * | 2009-03-13 | 2010-09-15 | 山东恒能环保能源设备有限公司 | Low-concentration fuel transmission pipeline |
| CN101769536B (en) * | 2008-12-31 | 2011-08-10 | 中国神华能源股份有限公司 | System for enabling mine ventilation gas to participate combustion of thermal power plant coal boiler |
| CN104848674A (en) * | 2015-05-18 | 2015-08-19 | 上海褐美能源科技有限公司 | Coal mine low concentration gas oxidation high temperature hot air and coal slime preparing and drying technology |
| CN105154157A (en) * | 2015-08-23 | 2015-12-16 | 成都中科能源环保有限公司 | Pretreatment device and method for production of compressed natural gas from LFG (landfill gas) |
| CN105275673A (en) * | 2015-11-19 | 2016-01-27 | 山东大学 | Low-concentration coal-bed methane engine anti-explosion gas supply system and operation method |
| CN104456078B (en) * | 2014-11-07 | 2017-05-24 | 河南理工大学 | Method for protecting low-concentration gas pipeline transportation by means of charged water mist |
| CN113074319A (en) * | 2021-03-05 | 2021-07-06 | 山东安益矿用设备股份有限公司 | Gas drainage conveying system |
Family Cites Families (4)
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| CN2068637U (en) * | 1990-05-15 | 1991-01-02 | 钱斌 | Gas transmission pipeline through-ball barrier-free water condenser |
| CN2119561U (en) * | 1991-04-12 | 1992-10-21 | 苏宝中 | High-and medium-pressure one-and two-stage condenser for cleaning fuel gas pipeline |
| JPH08177415A (en) * | 1994-12-26 | 1996-07-09 | Kawasaki Steel Corp | Motive power converting facility using liquefied gas |
| US5673562A (en) * | 1996-02-23 | 1997-10-07 | L'air Liquide, S.A. | Bulk delivery of ultra-high purity gases at high flow rates |
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2005
- 2005-08-23 CN CNB2005100442900A patent/CN1318794C/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101158286B (en) * | 2007-11-15 | 2010-07-07 | 淮南矿业(集团)有限责任公司 | Coal mine light concentration mash gas safety conveying method and conveying system |
| WO2010025688A1 (en) * | 2008-09-07 | 2010-03-11 | 胜利油田胜利动力机械集团有限公司 | Piston-reciprocating type low-concentration gas generator group |
| AU2009290005B2 (en) * | 2008-09-07 | 2013-12-05 | Shengli Oil Field Shengli Power Machinery Group Co., Ltd. | Piston-reciprocating type low-concentration gas generator group |
| RU2525567C2 (en) * | 2008-09-07 | 2014-08-20 | Шенгли Ойл Филд Шенгли Пауэр Мэшинери Груп Ко., Лтд. | Gas-piston electric generator with low gas concentration |
| CN101769536B (en) * | 2008-12-31 | 2011-08-10 | 中国神华能源股份有限公司 | System for enabling mine ventilation gas to participate combustion of thermal power plant coal boiler |
| CN101832428A (en) * | 2009-03-13 | 2010-09-15 | 山东恒能环保能源设备有限公司 | Low-concentration fuel transmission pipeline |
| CN104456078B (en) * | 2014-11-07 | 2017-05-24 | 河南理工大学 | Method for protecting low-concentration gas pipeline transportation by means of charged water mist |
| CN104848674A (en) * | 2015-05-18 | 2015-08-19 | 上海褐美能源科技有限公司 | Coal mine low concentration gas oxidation high temperature hot air and coal slime preparing and drying technology |
| CN105154157A (en) * | 2015-08-23 | 2015-12-16 | 成都中科能源环保有限公司 | Pretreatment device and method for production of compressed natural gas from LFG (landfill gas) |
| CN105154157B (en) * | 2015-08-23 | 2018-03-20 | 成都中科能源环保有限公司 | Landfill gas produces the pretreatment unit and method of compressed natural gas |
| CN105275673A (en) * | 2015-11-19 | 2016-01-27 | 山东大学 | Low-concentration coal-bed methane engine anti-explosion gas supply system and operation method |
| CN113074319A (en) * | 2021-03-05 | 2021-07-06 | 山东安益矿用设备股份有限公司 | Gas drainage conveying system |
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Owner name: SHENGLI OIL FIELD SHENGLI POWER MACHINERY GROUP CO Free format text: FORMER NAME: SHENGLI OIL FIELD SHENGLI POWER MACHINERY CO., LTD. |
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Address after: 257032 technical department, Shengli Power Machinery Co., Ltd., No. 101 North Road, Shandong, Dongying Patentee after: Shengli Oil Field Shengli Power Machinery Group Co., Ltd. Address before: 257032 technical department, Shengli Power Machinery Co., Ltd., No. 101 North Road, Shandong, Dongying Patentee before: Shengli Power Machinery Co., Ltd., Shengli Oil Field |
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