CN104295364A - Coal seam gas based residual heat resource distributed energy system - Google Patents
Coal seam gas based residual heat resource distributed energy system Download PDFInfo
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- CN104295364A CN104295364A CN201410541368.9A CN201410541368A CN104295364A CN 104295364 A CN104295364 A CN 104295364A CN 201410541368 A CN201410541368 A CN 201410541368A CN 104295364 A CN104295364 A CN 104295364A
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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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
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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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/30—Use of alternative fuels, e.g. biofuels
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Abstract
The invention discloses a coal seam gas based residual heat resource distributed energy system. The coal seam gas based residual heat resource distributed energy system comprises a low-concentration coal seam gas combined cycle power generation system, a mine shaft waste water waste heat supply system, a mine shaft ventilation air waste heat utilization system and a winter heat supply summer refrigeration system. The low-concentration coal seam gas of a mine shaft and air are led into an internal combustion engine for work doing and power generation. The ventilation air of the mine shaft is led to a heat counter-flow catalytic oxidation reactor to produce smoke at certain temperature. The smoke discharged by the internal combustion engine and the oxidation reactor flows into a waste heat boiler to produce superheated steam to be led into a steam turbine for work doing and power generation. An absorption heat pump is adopted to achieve heating in winter and refrigeration in summer, and the discharged smoke temperature of the system can be reduced to be lower than 80 DEG C. Domestic wastewater and mine shaft discharged water are delivered to a waste water treatment device to be purified, and a water source heat pump provides domestic hot water. The coal seam gas based residual heat resource distributed energy system can achieve extraction and efficient utilization of the low-concentration coal seam gas and efficient utilization of the mine shaft waste heat, is an efficient distributed energy system providing power, heat and cold for coal mine enterprises and remarkably reduces pollutant emission of the coal mine enterprises.
Description
Technical field
The present invention relates to distributed energy resource system field, especially a kind of unnecessary thermal resource distributed energy resource system based on coal-seam gas.
Background technique
Distributed energy resource system is for traditional concentration supply power mode, adopt cold-hot electirc linking technology, provide the energy services system of electric power, steam, hot water and air conditioner cold water or cold wind simultaneously, the efficiency of energy utilization of distributed energy resource system is up to more than 90%.In the distributed energy resource system of current research, mainly based on wind energy and distributed solar energy system, due to the characteristic of natural resources, when renewable energy sources is for generating electricity, its power stage has significantly intermittent and wave properties, its change or even random, easily to electrical network produce impact, can power grid accident be caused time serious.
According to Problems existing in the energy resources structural feature of China and using energy source, carrying out corresponding distributed energy technical research, is the only way of China's distributed energy development.Present stage China's coal-mine surface plant use the heat demand such as wellhead anti-freezing, bath hot water and building and heating be generally provided by coal-fired (fuel oil) boiler, not only consume a large amount of fire coals or fuel oil, and a large amount of pollutant of environmental emission towards periphery.
Summary of the invention
Technical problem to be solved by this invention is: according to energy resources feature and electricity, heat, the cold demand of coal mining enterprise, and invent a kind of unnecessary thermal resource distributed energy resource system based on coal-seam gas, efficent use of resources, realizes energy-saving and emission-reduction.
Technological scheme selected by technical solution problem of the present invention is: provide a kind of unnecessary thermal resource distributed energy resource system based on coal-seam gas, its structure comprises: the coal-seam gas association circulating power generation system be made up of devices such as internal-combustion engine, exhaust heat boiler, steam turbine and vapour condenser; The waste water of mine waste heat for supplying system be made up of waste treating equipment and water resource heat pump; The mine air-lack bootstrap system be made up of mine wind-lack heat counter-current catalytic oxidation reactor and exhaust heat boiler; The heat supply in winter cooling in summer system be made up of absorption heat pump 2, flue gas heat-exchange unit and heat-storing device; Absorption heat pump 1 heating system.
Mine low concentration coal-bed gas and air are passed into internal-combustion engine acting generating; Mine air-lack is caused hot counter-current catalytic oxidation reactor and utilize the methane heat in weary wind and the flue gas producing uniform temperature; I. C. engine exhaust enters exhaust heat boiler and produces superheated vapor devaporation turbine acting generating together with hot counter-current catalytic oxidation reactor exhaust, and exhaust heat boiler exhaust enters the low temperature water of flue gas heat-exchange unit heating from absorption heat pump 2.Absorption heat pump 1 draws gas as driving heat source utilizes the low temperature exhaust heat of vapour condenser circulating water and cooling water of internal combustion engine to produce domestic hot-water with steam turbine.Absorption heat pump 2 draws gas as driving heat source utilizes low temperature water heat heat supply in winter with steam turbine.Unnecessary fume afterheat can store in order to dispatching during needs by heat-storing device.Its low-temperature heat quantity is utilized to produce domestic hot-water by water resource heat pump after sanitary wastewater and mine drainage being delivered to waste treating equipment purification.Absorption heat pump 2 cooling in summer, heat is lost in environment by cooling tower.
Beneficial effect of the present invention is: can realize the in site recovery of low concentration coal-bed gas and the efficiency utilization of efficiency utilization and mine waste heat, is for coal mining enterprise provides electricity, heat, cold efficient distributed energy resource system, significantly reduces the pollutant emission of coal mining enterprise.
Accompanying drawing explanation
Fig. 1 is the unnecessary thermal resource distributed energy resource system schematic diagram based on coal-seam gas.
In Fig. 1,1. internal-combustion engine; 2. exhaust heat boiler; 3. hot counter-current catalytic oxidation reactor; 4. steam turbine; 5. steam converter valve; 6. generator; 7. generator; 8. vapour condenser; 9. absorption heat pump 1; 10. waste treating equipment; 11. water resource heat pumps; 12. flue gas heat-exchange units; 13. heat-storing devices; 14. absorption heat pumps 2; 15. cooling towers.
Embodiment
Below in conjunction with accompanying drawing, detailed description is made to the specific embodiment of the present invention.
Mine low concentration coal-bed gas and air enter combustion in IC engine acting generating, and electric power is exported by generator (6).Mine air-lack causes the flue gas that the methane oxidation in weary wind is produced uniform temperature by hot counter-current catalytic oxidation reactor (3), if the too low reactor autothermal operation that can not make of methane content in weary wind, is then mended by low concentration coal-bed gas and calls in reactor; I. C. engine exhaust enters exhaust heat boiler (2) and produces superheated vapor devaporation turbine (4) acting generating together with hot counter-current catalytic oxidation reactor exhaust, and electric power is exported by generator (7); Exhaust heat boiler exhaust enter flue gas heat-exchange unit (12) heating from absorption heat pump 2(14) low temperature water; Absorption heat pump 1(9) draw gas as driving heat source utilizes the low temperature exhaust heat of the circulating water of vapour condenser (8) and the jacket-cooling water of internal-combustion engine (1) to produce domestic hot-water with steam turbine; Absorption heat pump 2(14) draw gas as driving heat source utilizes low temperature water heat heat supply in winter with steam turbine; Unnecessary fume afterheat can store in order to dispatching during needs by heat-storing device (13); As absorption heat pump 1(9 after the steam temperature reducing and pressure reducing that exhaust heat boiler (2) can produce by steam converter valve (5)) and absorption heat pump 2(14) driving heat source; Its low-temperature heat quantity is utilized to produce domestic hot-water by water resource heat pump (11) after sanitary wastewater and mine drainage being delivered to waste treating equipment (10) purification; Absorption heat pump 2(14) cooling in summer, heat is lost in environment by cooling tower (15).
Concrete performance is as described below.
A. by internal-combustion engine (1), exhaust heat boiler (2), steam turbine (4) and absorption heat pump 1(9) form combined cycle generation system of fuel gas-steam, fuel for power generation is 9%-30% present low gas content coal-seam gas, exhaust steam in steam turbine waste heat and internal combustion engine cylinder jacket cooling water heat are utilized as user by lithium bromide absorption type heat pump 1 and provide domestic hot-water throughout the year, and heat pump replaces cooling tower.
B. adopt the low-concentration methane heat in hot counter-current catalytic oxidation reactor (3) recovery mine air-lack, reactor autothermal oxidation (initial heat is provided by built-in electric heater), methane oxidation thing is CO
2, H
2o, N
2and O
2.Native system devises weary wind-coal-seam gas supply link, when the methane concentration in weary wind is not enough to make reactor autothermal oxidation lower than limiting value, by filling into appropriate coal-seam gas to improve the methane concentration in weary wind, ensure reactor autothermal operation, oxidation reactor delivery temperature is 400-500 DEG C.
C. oxidation reactor exhaust enters exhaust heat boiler (2) (both temperature are suitable) together with I. C. engine exhaust, increases the output of exhaust heat boiler acting steam flow, ensures the normal work of generator set when low concentration coal-bed gas.
D. two pressure exhaust heat boiler delivery temperature is about 120 DEG C, Operation system setting flue gas heat-exchange unit (12), heating water is as absorption heat pump 2(14) low-temperature heat source, for user provides the heat load needed for winter, temperature of exhaust fume can be down to less than 80 DEG C, and the efficiency of energy utilization of system significantly improves.Adopt absorption heat pump 2(14) for heat supply in winter, cooling in summer, heat is dispersed in air by cooling tower.E. adopt efficient water resource heat pump (11) to utilize the waste heat of mine drainage and sanitary wastewater, for plant area provides domestic hot-water, first purify through waste treating equipment before mine drainage and sanitary wastewater UTILIZATION OF VESIDUAL HEAT IN.
F. be provided with phase change material device, the waste heat in system stored, the release heat when the shortage of heat of low-temperature heat source, ensure heat supply heating demands.Waste water treater can regard the device with heat storage capacity as.
G. arrange superheated vapor bypath system, superheated vapor is by the driving steam as heat pump after steam converter valve (5).When power generation system fault or maintenance outage, the reactant of mine air-lack autothermal oxidation reactor enters exhaust heat boiler and produces superheated vapor, and superheated vapor enters heat pump through bypath system, can ensure heat load and the refrigeration duty demand of user.
H. electricity-absorption heat pump 1(9 is formed) domestic hot-water-water resource heat pump (11) domestic hot-water-absorption heat pump 2(14) energy bus system of heating water and chilled water-water storage.
I. the distributed energy resource system based on coal-seam gas can realize isolated power grid and be incorporated into the power networks.When lonely net breaks down, from bulk power grid power taking, water resource heat pump (11) and hot counter-current catalytic oxidation reactor (3) work can be made, for user provides changes in temperature heat load.
Claims (10)
1. based on the unnecessary thermal resource distributed energy resource system of coal-seam gas, it is characterized in that: this system is made up of low concentration coal-bed gas association circulating power generation system, mine air-lack bootstrap system, waste water of mine waste heat for supplying system and heat supply in winter cooling in summer and annual hot-water supply system.
2. as claimed in claim 1 based on the unnecessary thermal resource distributed energy resource system of coal-seam gas, it is characterized in that: described low concentration coal-bed gas association circulating power generation system is made up of internal-combustion engine, hot counter-current catalytic oxidation reactor, exhaust heat boiler, steam turbine and condenser arrangement, fuel for power generation is 9%-30% present low gas concentration coal-seam gas.
3. as claimed in claim 1 based on the unnecessary thermal resource distributed energy resource system of coal-seam gas, it is characterized in that: in described low concentration coal-bed gas association circulating power generation system, hot counter flow oxidation reactor exhaust enters exhaust heat boiler (both temperature are suitable) together with I. C. engine exhaust, ensure the steam producing amount of exhaust heat boiler, ensure turbine LP rotors normal work at low load.
4., as claimed in claim 1 based on the unnecessary thermal resource distributed energy resource system of coal-seam gas, it is characterized in that: described mine air-lack bootstrap system is made up of mine wind-lack heat counter-current catalytic oxidation reactor and exhaust heat boiler; Hot counter-current catalytic oxidation reactor reclaims the low-concentration methane heat in mine air-lack, reactor autothermal oxidation, and its initial heat is provided by built-in electric heater; System coal-seam gas is mended and is adjusted, when the methane concentration in weary wind is not enough to make reactor autothermal oxidation lower than limiting value, by filling into appropriate coal-seam gas to improve the methane concentration in weary wind, ensure reactor autothermal operation, reactor delivery temperature is 400-500 DEG C.
5., as claimed in claim 1 based on the unnecessary thermal resource distributed energy resource system of coal-seam gas, it is characterized in that: described heat supply in winter cooling in summer and annual hot-water supply system are made up of absorption heat pump 2, flue gas heat-exchange unit and heat-storing device; Absorption heat pump 2 winter, is driven by extracted steam from turbine, for user provides the heat load needed for winter for low-temperature heat source with the hot water from flue gas heat-exchange unit; Absorption heat pump 2 is used for refrigeration summer, and heat is dispersed in air by cooling tower.
6. as claimed in claim 1 based on the unnecessary thermal resource distributed energy resource system of coal-seam gas, it is characterized in that: described heat supply in winter cooling in summer and annual hot-water supply system are utilized by lithium bromide absorption type heat pump 1 by exhaust steam in steam turbine waste heat and internal combustion engine cylinder jacket cooling water heat, for user provides domestic hot-water throughout the year, heat pump replaces cooling tower.
7. as claimed in claim 1 based on the unnecessary thermal resource distributed energy resource system of coal-seam gas, it is characterized in that: in described heat supply in winter cooling in summer and annual hot-water supply system, be provided with gas-water heat exchanger, healed water is as the low-temperature heat source of absorption heat pump 2, temperature of exhaust fume can be down to less than 80 DEG C, and the efficiency of energy utilization of system significantly improves.
8. as claimed in claim 1 based on the unnecessary thermal resource distributed energy resource system of coal-seam gas, it is characterized in that: described heat supply in winter cooling in summer and annual hot-water supply system are provided with phase change material device, the waste heat of flue gas is stored, the release heat when the shortage of heat of low-temperature heat source, ensure heat supply heating demands, waste water treater can regard the device with heat storage capacity as.
9., as claimed in claim 1 based on the unnecessary thermal resource distributed energy resource system of coal-seam gas, it is characterized in that: described waste water of mine waste heat for supplying system is made up of waste treating equipment and water resource heat pump, for plant area provides domestic hot-water.
10. as claimed in claim 1 based on the unnecessary thermal resource distributed energy resource system of coal-seam gas; it is characterized in that: superheated vapor bypath system is set; superheated vapor is by the driving steam as heat pump after steam converter valve; when power generation system fault or maintenance outage; the reactant of mine air-lack autothermal oxidation reactor enters exhaust heat boiler and produces superheated vapor; superheated vapor enters heat pump through bypath system, can ensure heat load and the refrigeration duty demand of user.
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Cited By (11)
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| CN105840256A (en) * | 2016-05-18 | 2016-08-10 | 中国大唐集团科学技术研究院有限公司 | Utilization system of dead steam heat of power plant |
| CN106640237A (en) * | 2016-08-29 | 2017-05-10 | 华电电力科学研究院 | System for improving thermal power straight condensing unit flexibility and running method of system |
| CN106958483A (en) * | 2017-03-29 | 2017-07-18 | 赫普热力发展有限公司 | A kind of mine colliery distribution is provided multiple forms of energy to complement each other energy micro-grid system |
| CN107527665A (en) * | 2017-08-22 | 2017-12-29 | 中广核工程有限公司 | Nuclear power station steam generator supporting plate state monitoring method |
| CN108036547A (en) * | 2017-12-15 | 2018-05-15 | 国网新疆电力有限公司经济技术研究院 | A kind of multiple source-coupled heat pump afterheat utilizing system |
| CN109027991A (en) * | 2018-05-03 | 2018-12-18 | 太原理工大学 | Low concentration coal-bed gas separation enrichment is coupled with heat-electricity-cold combined supply utilizes system and technique |
| CN109372512A (en) * | 2018-11-20 | 2019-02-22 | 中国矿业大学 | A kind of bastard coal and gas resources distribution type high efficient utilize method |
| CN110985202A (en) * | 2019-11-24 | 2020-04-10 | 中煤科工集团重庆研究院有限公司 | Cold, heat and electricity triple supply system based on low-concentration gas |
| CN111121067A (en) * | 2019-11-24 | 2020-05-08 | 中煤科工集团重庆研究院有限公司 | Method for utilizing low-concentration gas |
| WO2020181676A1 (en) * | 2019-03-11 | 2020-09-17 | 西安交通大学 | Auxiliary system for denitration in all working conditions and operation method |
| CN115111632A (en) * | 2022-06-21 | 2022-09-27 | 北方联合电力有限责任公司呼和浩特金桥热电厂 | Combined heat and power supply system and method for coupling internal combustion engine with solar geothermal energy |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105840256A (en) * | 2016-05-18 | 2016-08-10 | 中国大唐集团科学技术研究院有限公司 | Utilization system of dead steam heat of power plant |
| CN106640237A (en) * | 2016-08-29 | 2017-05-10 | 华电电力科学研究院 | System for improving thermal power straight condensing unit flexibility and running method of system |
| CN106640237B (en) * | 2016-08-29 | 2018-10-19 | 华电电力科学研究院 | A kind of system and its operation method improving thermoelectricity pure condensate unit flexibility |
| CN106958483A (en) * | 2017-03-29 | 2017-07-18 | 赫普热力发展有限公司 | A kind of mine colliery distribution is provided multiple forms of energy to complement each other energy micro-grid system |
| CN107527665B (en) * | 2017-08-22 | 2019-07-02 | 中广核工程有限公司 | Nuclear power station steam generator support plate state monitoring method |
| CN107527665A (en) * | 2017-08-22 | 2017-12-29 | 中广核工程有限公司 | Nuclear power station steam generator supporting plate state monitoring method |
| CN108036547A (en) * | 2017-12-15 | 2018-05-15 | 国网新疆电力有限公司经济技术研究院 | A kind of multiple source-coupled heat pump afterheat utilizing system |
| CN109027991A (en) * | 2018-05-03 | 2018-12-18 | 太原理工大学 | Low concentration coal-bed gas separation enrichment is coupled with heat-electricity-cold combined supply utilizes system and technique |
| CN109372512A (en) * | 2018-11-20 | 2019-02-22 | 中国矿业大学 | A kind of bastard coal and gas resources distribution type high efficient utilize method |
| WO2020181676A1 (en) * | 2019-03-11 | 2020-09-17 | 西安交通大学 | Auxiliary system for denitration in all working conditions and operation method |
| US10960353B2 (en) | 2019-03-11 | 2021-03-30 | Xi'an Jiatong University | All-condition auxiliary denitration system and operation method thereof |
| CN110985202A (en) * | 2019-11-24 | 2020-04-10 | 中煤科工集团重庆研究院有限公司 | Cold, heat and electricity triple supply system based on low-concentration gas |
| CN111121067A (en) * | 2019-11-24 | 2020-05-08 | 中煤科工集团重庆研究院有限公司 | Method for utilizing low-concentration gas |
| CN115111632A (en) * | 2022-06-21 | 2022-09-27 | 北方联合电力有限责任公司呼和浩特金桥热电厂 | Combined heat and power supply system and method for coupling internal combustion engine with solar geothermal energy |
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Application publication date: 20150121 |