CN203925750U - A kind of wind gas-removing reclaims power generation system - Google Patents
A kind of wind gas-removing reclaims power generation system Download PDFInfo
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- CN203925750U CN203925750U CN201420253686.0U CN201420253686U CN203925750U CN 203925750 U CN203925750 U CN 203925750U CN 201420253686 U CN201420253686 U CN 201420253686U CN 203925750 U CN203925750 U CN 203925750U
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Abstract
The utility model discloses a kind of wind gas-removing and reclaim power generation system, comprise that the parts such as deduster, dehumidifier, the mixing box of high-concentration and low-concentration gas, gas turbine form.The whole process of system is first ventilating shaft to be discharged to gas to carry out removal of impurities, after dehumidifying, recycling concentration that this concentration extracts at 0.5%～1% low concentration gas and the mine high concentration gas after 30%～95% removal of impurities, to be mixed into concentration be that 2%～3% gas is as fuel, sent into after gas compressor compression, then through catalytic combustor, carry out catalytic combustion, utilize the combustion gas of the High Temperature High Pressure after burning directly in combustion gas turbine, to expand and do work, the generating of drive generator, high-temperature fuel gas is reclaimed to a part of heat by regenerator, the combustion gas of compressing with its heating gas compressor, sending into catalytic combustor burns again, complete a circulation of gas turbine.Thereby realize the recovery generating of wind gas-removing.
Description
Technical field
The utility model relates to a kind of recycling of wind gas-removing, relates in particular to a kind of recovery generating of wind gas-removing.
Background technique
Gas is the harmful gas of mine, has burning, blast and outburst hazard, is seriously threatening the safety in production in colliery.The harm of gas, except meeting causes explosive accident, also has environment.At present, the whole world because of the methane total amount that coal mining enters in atmosphere be every year 3,000 ten thousand tons, wherein 70% (China is 90%) from methane concentration lower than in 1% mine return air stream.China < < safety regulations in coal mine > > regulation: its methane concentration of gas utilization can not be lower than 30%, input natural gas line requires concentration to be greater than 95%, and some its concentration of chemical plant production requirement are also higher.But for production safety, even if reach, do not utilize concentration, want extraction yet.And in process of production, just lower with methane content in the gas of mine ventilation discharge, maximum can not surpass 1%.
In China's coal-mine exploitation, the pure methane of discharging by weary wind is every year at 100～15,000,000,000 m
3between.The mine of the 1000000 tons of output in a high gas mining area, weary air quantity per minute is at 5000～10000m
3between, per minute is exactly 25m by weary wind discharge pure methane
3～50m
3, annual pure methane of discharging is exactly 1000～2,000 ten thousand m
3.Methane is directly discharged in atmosphere, has caused on the one hand the serious waste of limited non-renewable resources, its low heat valve of gas only discharging from coal mine return air stream is every year equivalent to the low heat valve of 3,370 ten thousand tons of standard coals; On the other hand, aggravate pollution of atmosphere, aggravated greenhouse effect.The greenhouse effect of methane are CO
224 times more than.Therefore, rationally recycle gas in return and there is energy-conservation and environmental protection double meaning.
The utilization of low concentration gas more and more causes the attention of national governments.Methane concentration is called ultralow concentration gas lower than 2% damp, because calorific value is extremely low, has very large difficulty when utilizing.The purpose of this utility model is to recycle the concentration of discharging in ventilating shaft lower than 1% ultralow concentration gas.
Model utility content
Problem to be solved in the utility model is to provide a kind of recycling and in ventilating shaft, discharges concentration lower than 1% ultralow concentration gas.
The technological scheme that the utility model adopts is: this wind gas-removing reclaims power generation system, comprise Wet-type dust-removal fan, dehumidifier, the mixing box of high-concentration and low-concentration gas, gas turbine, gear train, generator, described dehumidifier consists of the cyclone separator and the dehydration barrel that are fixed on successively cylindrical channel inside; Described Wet-type dust-removal fan one end is connected with the dehumidifier end near cyclone separator, and the other end is directly connected with wind gas-removing pipeline; Described high-concentration and low-concentration gas mixing box one end is connected with the other end of dehumidifier, is connected again with high concentration gas pipeline, and the other end is connected with the centrifugal compressor of gas turbine; Described gas turbine is connected and composed by centrifugal compressor, regenerator, catalysis heating starting device, catalytic combustor, radial turbine successively; Described gear train one end is connected with radial turbine, and the other end is connected with generator.The whole process of system: first ventilating shaft is discharged to gas and carry out removal of impurities, after the steps such as dehumidifying, recycling this concentration and be 0.5%～1% gas and mine, to extract concentration be that to be mixed into concentration be that 2%～3% gas is as fuel for high concentration gas after 30%～95% removal of impurities, sent into after gas compressor compression, then through catalytic combustor, carry out catalytic combustion, utilize the combustion gas of the High Temperature High Pressure after burning directly in combustion gas turbine, to expand and do work, the generating of drive generator, high-temperature fuel gas is reclaimed to a part of heat by regenerator, the combustion gas of compressing with its heating gas compressor, sending into catalytic combustor burns again, complete the circulation of gas turbine.Thereby realize the recycling of wind gas-removing.
The dust removal apparatus that this system adopts is Wet-type dust-removal fan, and it is comprised of mine fan and wet type vibratory string dust trap.After dust laden air is sucked by dedusting fan, through wet type vibratory string dust trap, dust is caught, udst separation on the spot, the air-flow after udst separation is discharged from dust trap exhaust outlet, reaches and purifies distinguished and admirable object.Through the low-concentration methane gas purifying, by cyclone separator and dehydration barrel, the moisture in methane gas is spun off again, play exsiccation.
The device of the increase gas density that this system adopts is the mixing box of high-concentration and low-concentration gas, and its structural representation is shown in Fig. 1.A motor inner isolated with mixing box is placed in the upper part, top of gas mixing box; A low power fan is placed in bosom position; Front end connects respectively the methane gas pipeline of high and low concentration, and above pipeline, has the valve of controlling flow; Gas detector is placed in rear end.The working principle of this device is that the flow that utilizes control valve to control high and low concentration gas carrys out the mixed concentration of control gas.When the methane gas of two bursts of high and low concentration enters mixing box, the small-power fan of mixing box inside rotates, two strands of gases are mixed fully, when gas after mixing arrives mixing box rear portion, gas detector can detect the concentration of gas in time whether in 3%～5% scope.If the concentration data showing is less than this scope, system can be held the control valve of high concentration gas pipeline greatly automatically so; On the contrary, system can be held the control valve of low concentration gas pipeline greatly automatically.Thereby can guarantee that the concentration that gas enters catalytic combustor is in 3%～5% scope.
The gas utilization device that this system adopts is gas turbine, and its principle schematic is shown in Fig. 2.The gas turbine that uses low concentration gas mainly comprises filter, centrifugal-flow compressor, regenerator, catalytic combustor, radial turbine and a set of startup combustion system, if to meet power generation needs also needs increase a set of electricity generating device.The running principle that uses the gas turbine of low concentration gas is: the methane gas of relatively stable concentration enters gas compressor and is compressed to 2～3 barometric pressure, and simultaneous temperature raises.Compressed combustion gas enters into regenerator, the waste heat that the high-temperature flue gas that utilizes a upper circulation turbine to discharge produces heats, and enters firing chamber, in the indoor generation catalytic reaction of built-in cellular catalytic combustion after heating again, temperature raises, and generates the flue gas of High Temperature High Pressure.The flue gas of High Temperature High Pressure continues to enter turbine expansion acting, drives generator generating.The flue gas of finally discharging is through regenerator, the combustion gas that utilizes its waste-heat to be compressed by gas compressor.Now just completed a circulation.
Advantage and the good effect that the utlity model has are: a kind of wind gas-removing of the utility model reclaims power generation system can effectively utilize coal mine methane, realize clean discharge, obtain and reduce discharging and energy saving profit, change coalmine ventilation and only pay the situation that there is no benefit, both reach the object of ventilating, and can obtain economic benefit again.Therefore, this wind gas-removing recycling system will promote the enthusiasm of coalmine ventilation effectively, significant to Safety of Coal Mine Production.
Accompanying drawing explanation
Fig. 1 is gas mixing box structural representation;
Fig. 2 is gas turbine principles schematic diagram;
Fig. 3 is that wind gas-removing reclaims power generation system schematic diagram.
Wherein: 1-wind gas-removing pipeline, 2-Wet-type dust-removal fan, 3-cyclone separator, 4-dehydration barrel, 5-blowdown funnel, 6-high concentration gas pipeline, the clean weary wind of 7-, the mixing box of 8-high-concentration and low-concentration gas, 9-gas detector, the methane gas of 10-steady concentration, 11-centrifugal compressor, 12-regenerator, 13-catalysis heating starting device, 14-catalytic combustor, 15-radial turbine, 16-high-temperature flue gas, 17-gear train, 18-generator.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment, the utility model is elaborated.
As shown in Figure 3, a kind of wind gas-removing recovery power generation system described in the utility model comprises that the parts such as Wet-type dust-removal fan 2, dehumidifier (cyclone separator 3, dehydration barrel 4), gas mixing box 8, gas turbine form.Wherein gas turbine comprises centrifugal compressor 11, regenerator 12, catalytic combustor 14, radial turbine 15 and a set of startup combustion system 13, for meet power generation needs also needs increase a set of electricity generating device 18.The whole process of system is that the methane gas of first ventilating shaft being discharged sends into successively by wind gas-removing pipeline 1 that Wet-type dust-removal fan 2 carries out dedusting, dehumidifier (cyclone separator 3, dehydration barrel 4) dehumidifies, the gas that the high concentration gas of the concentration that the weary wind 7 of cleaning after recycling removal of impurities, dehumidifying and mine extract after 30%～95% removal of impurities is mixed into concentration 2%～3% in high-concentration and low-concentration gas mixing box 8 is as fuel, sent into centrifugal compressor 11 again and be compressed to 2～3 barometric pressure, simultaneous temperature raises.Compressed combustion gas enters into regenerator 12, after being passed the waste-heat that high-temperature flue gas 16 that a circulation turbine 15 discharges produces, enter catalytic combustor 14, through built-in cellular catalytic combustor 14, catalytic reaction occurs, temperature raises, and generates the flue gas of High Temperature High Pressure.The flue gas of High Temperature High Pressure continues to enter turbine 15 expansion actings, drives generator 18 generatings.The flue gas of finally discharging is through regenerator 12, the combustion gas that utilizes its waste-heat to be compressed by gas compressor 11.Now just completed a circulation.Thereby realize the recovery generating of wind gas-removing.
Claims (3)
1. a wind gas-removing reclaims power generation system, comprise Wet-type dust-removal fan (2), dehumidifier, high-concentration and low-concentration gas mixing box (8), gas turbine, gear train (17), generator (18), it is characterized in that: described dehumidifier consists of the cyclone separator (3) and the dehydration barrel (4) that are fixed on successively cylindrical channel inside; Described Wet-type dust-removal fan (2) one end is connected with the dehumidifier end near cyclone separator (3), and the other end is directly connected with wind gas-removing (1) pipeline; Described high-concentration and low-concentration gas mixing box (8) one end is connected with the other end of dehumidifier, is connected again with high concentration gas (6) pipeline, and the other end is connected with the centrifugal compressor (11) of gas turbine; Described gas turbine is connected and composed by centrifugal compressor (11), regenerator (12), catalysis heating starting device (13), catalytic combustor (14), radial turbine (15) successively; Described gear train (17) one end is connected with radial turbine (15), and the other end is connected with generator (18).
2. wind gas-removing reclaims power generation system as claimed in claim 1, it is characterized in that: the methane gas of steady concentration (10) enters centrifugal compressor (11) and is compressed to the barometric pressure within the scope of 2～3.
3. wind gas-removing reclaims power generation system as claimed in claim 1, it is characterized in that: one and the inner isolated motor of mixing box are placed in the outside upper part, top of described high-concentration and low-concentration gas mixing box (8), a low power fan is placed in bosom position, and gas detector (9) is placed in rear end.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420253686.0U CN203925750U (en) | 2014-05-16 | 2014-05-16 | A kind of wind gas-removing reclaims power generation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420253686.0U CN203925750U (en) | 2014-05-16 | 2014-05-16 | A kind of wind gas-removing reclaims power generation system |
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| CN203925750U true CN203925750U (en) | 2014-11-05 |
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| CN201420253686.0U Expired - Fee Related CN203925750U (en) | 2014-05-16 | 2014-05-16 | A kind of wind gas-removing reclaims power generation system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107014104A (en) * | 2017-04-13 | 2017-08-04 | 中煤科工集团重庆研究院有限公司 | Waste heat cools and mechanically combining dehydration device |
| CN107143420A (en) * | 2017-05-09 | 2017-09-08 | 阮秀梅 | A kind of coal mine gas integrated application device |
| CN111963342A (en) * | 2020-09-11 | 2020-11-20 | 安徽理工大学 | Leading hybrid system of low concentration gas |
| CN114165277A (en) * | 2021-12-28 | 2022-03-11 | 山西晋煤集团技术研究院有限责任公司 | Safety protection method and device for coal mine safety gas |
-
2014
- 2014-05-16 CN CN201420253686.0U patent/CN203925750U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107014104A (en) * | 2017-04-13 | 2017-08-04 | 中煤科工集团重庆研究院有限公司 | Waste heat cools and mechanically combining dehydration device |
| CN107143420A (en) * | 2017-05-09 | 2017-09-08 | 阮秀梅 | A kind of coal mine gas integrated application device |
| CN111963342A (en) * | 2020-09-11 | 2020-11-20 | 安徽理工大学 | Leading hybrid system of low concentration gas |
| CN114165277A (en) * | 2021-12-28 | 2022-03-11 | 山西晋煤集团技术研究院有限责任公司 | Safety protection method and device for coal mine safety gas |
| CN114165277B (en) * | 2021-12-28 | 2023-11-24 | 山西晋煤集团技术研究院有限责任公司 | Safety protection method and device for coal mine safety gas |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141105 Termination date: 20150516 |
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| EXPY | Termination of patent right or utility model |