CN201963341U - Comprehensive application system of coalmine gas - Google Patents
Comprehensive application system of coalmine gas Download PDFInfo
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- CN201963341U CN201963341U CN201020677373XU CN201020677373U CN201963341U CN 201963341 U CN201963341 U CN 201963341U CN 201020677373X U CN201020677373X U CN 201020677373XU CN 201020677373 U CN201020677373 U CN 201020677373U CN 201963341 U CN201963341 U CN 201963341U
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Abstract
The utility model discloses a comprehensive application system of coalmine gas, which comprises a coalmine methane measuring component, a coalmine gas measuring component, a high-concentration gas processing subsystem formed by connecting a high-concentration gas pre-processing device and a high-concentration gas generator set through pipes, a low-concentration gas processing subsystem formed by connecting a safety transportation device, a low-concentration gas pre-processing device with a low-concentration gas generator set through pipes, a coalmine methane processing subsystem formed by connecting a methane transportation connecting device, a mixing device with a methane oxidation device through pipes, and a residual heat processing subsystem which is respectively connected with a high-concentration gas processing subsystem, a low-concentration gas processing subsystem and a coalmine methane processing subsystem through pipelines, wherein the high-concentration gas generator set and the low-concentration gas generator set are respectively connected with a power network through cables. The comprehensive application system can comprehensively utilize gas with different concentrations, maximally utilize gas, reduces gas emission in greenhouses, and achieves comprehensive recycling of energy sources.
Description
Technical field
The utility model relates to the device of a kind of environmental protection and the energy capable of circulation, is specifically related to a kind of coal mine gas comprehensive application system.
Background technology
Coal mine gas is commonly called as coal bed gas and belongs to unconventional natural gas, is high-grade energy and industrial chemicals.
China is not only a coal resources big country, and coal bed gas resource is also extremely abundant.The Chinese government and relevant industrial department show great attention to the exploration and development of coal bed gas, and this year, effect was striking.But for various reasons, the ratio that drops into and repay is still not fully up to expectations.At first, China's geological conditions complexity, the mining gas-geology theory is still immature, shortage systems such as the coal seam gas-bearing property of the main stored zone of national coal mine gas, coal seam reservoirs rerum natura, control gas geologic feature are inquired into and sum up, coal mine gas chooses evaluation criterion and method remains to be furtherd investigate, and this is that some coal mine gas is developed the improper major reason in constituency in the past.Secondly, coal seam reservoirs is different from the conventional gas reservoir, and the relevant public good technology in the exploration and development of coal mine gas is demanded urgently improving, and China's coal-mine gas pumping technology is backward relatively, and the utilization of coal mine gas limits to some extent.Moreover extraction mode improperly causes easily that the suction air has reduced gas density in the Device in Gas, and there is potential safety hazard in the concentration that makes gas between blast area.Because the gas explosion limit is 5% ~ 15%, so under safing prerequisite, a regulation can utilize concentration at the coal mine gas more than 30% before 2010, but continuous development along with technology, the adjustment of national policy, coal mine gas below 30% also can limitedly use, and operation technique remains further to be improved.The development and use of coal mine gas have the important strategic meaning for the development of Chinese national economy; it will improve the energy resource structure of China; promote China progressively to change to environmentally friendly sustainable development pattern based on the energy resource system of coal; form the new industry of clear energy sources; simultaneously; the exploitation of coal mine gas can also fundamentally prevent the coal mine gas accident; improve the Safety of Coal Mine Production condition; and because the greenhouse effect of methane are 21 times of carbon dioxide; make full use of coal mine gas and can reduce the strong greenhouse effect that discharge of methane causes, the protection of global atmosphere environment is had positive role.
The extraction system in colliery is because of different extraction technology and installed capacity meeting produce very big difference, makes the coal mine gas concentration height that extraction goes out.According to the difference of concentration, coal mine gas can be divided into following a few class:
1. concentration is greater than 30% high concentration gas, and this part gas safety is reliable, by can directly utilizing after the series of processes such as the removal of impurity, purification such as sending into city gas pipeline, as civilian.
2. concentration could restricted use under the prerequisite that safe delivery system is installed according to recent national regulation needs greater than 5% less than 30% low concentration gas.
3. in the coalmine ventilation tunnel, also exist concentration to be no more than 0.7% wind gas-removing, be commonly called as mine air-lack.This part gas all is direct emptying owing to can not directly utilizing basically, has wasted available resources.Though methane content is low but total amount is very big in the mine air-lack, accounts for 70% ~ 80% of whole coal mine gas discharge value usually, promptly accounts for greenhouse gas emissions more than 70%, has caused the discharging of a large amount of greenhouse gases.
The utility model content
The purpose of this utility model provides a kind of coal mine gas comprehensive application system, can adopt different process routes to fully utilize to the coal mine gas of variable concentrations, makes the utilization rate of whole coal mine gas reach maximization.For the ultralow mine air-lack of a large amount of concentration, use the regenerative oxidation cracker to destroy trace methane, reclaim the heat that cracking produces simultaneously, when the minimizing coal mine gas causes greenhouse effect, realize the comprehensive reutilization of the energy.
To achieve these goals, the utility model is achieved through the following technical solutions:
A kind of coal mine gas comprehensive application system, be characterized in that this application system comprises mine air-lack components of assays, coal mine gas components of assays, high concentration gas processing subsystem, low concentration gas processing subsystem, mine air-lack processing subsystem and Heat Treatment subsystem;
The input port of described coal mine gas components of assays links to each other by the air outlet of pipeline with coal mine gas extraction pump house;
The input port of described mine air-lack components of assays links to each other by the air outlet of pipeline with the coalmine ventilation tunnel;
Described high concentration gas processing subsystem comprises high concentration gas pretreatment unit, high concentration fuel gas generation unit; The air inlet port of described high concentration gas pretreatment unit links to each other by pipeline with the outlet of coal mine gas components of assays, the air inlet port of high concentration fuel gas generation unit links to each other by the gas outlet of pipeline with the high concentration gas pretreatment unit, and the power end of described high concentration fuel gas generation unit links to each other with electrical network by cable;
Described low concentration gas processing subsystem comprises security conveyer, low concentration gas pretreatment unit, low-concentration fuel generating set; The air inlet port of described security conveyer links to each other by pipeline with the outlet of coal mine gas components of assays, low concentration gas pretreatment unit air inlet port links to each other with the gas outlet of security conveyer by pipeline, and low-concentration fuel generating set air inlet port links to each other by the gas outlet of pipeline with the low concentration gas pretreatment unit; The power end of described low-concentration fuel generating set links to each other with electrical network by cable;
Described mine air-lack processing subsystem comprises weary wind and carries linkage, weary wind oxidation unit, the 3rd control sensing element, blending device; Described weary wind carries the air inlet port of linkage to be connected by the gas outlet of pipeline with weary wind components of assays, blending device respectively, and its gas outlet links to each other with the air inlet port of weary wind oxidation unit; The import of described the 3rd control sensing element links to each other with the outlet of high concentration gas pretreatment unit; The air inlet port of described blending device links to each other with the gas outlet of weary wind components of assays, the gas outlet of the 3rd control sensing element by pipeline respectively;
Described Heat Treatment subsystem comprises UTILIZATION OF VESIDUAL HEAT IN circulating device, first waste heat boiler, steam turbine and generator; Described UTILIZATION OF VESIDUAL HEAT IN circulating device links to each other by pipeline with first waste heat boiler, steam turbine respectively; The high-temperature flue gas import of described first waste heat boiler links to each other with the high-temperature flue gas outlet of high concentration fuel gas generation unit, low-concentration fuel generating set by pipeline respectively; The main shaft of described generator links to each other with the main shaft of steam turbine, and generator is connected with electrical network by cable.
Above-mentioned coal mine gas comprehensive application system, wherein, described UTILIZATION OF VESIDUAL HEAT IN circulating device comprises second waste heat boiler, electromagnetic valve, superheater condenser, condensation tank and feed pump; The air inlet port of described electromagnetic valve is connected with the gas outlet of superheater and the air inlet port of steam turbine respectively by pipeline with the gas outlet; The air inlet port of described condenser is connected with the outlet of steam turbine by pipeline; The two ends import of described condensation tank is connected with the outlet of condenser, the outlet of first waste heat boiler by pipeline respectively; The water inlet of described feed pump is connected with the outlet of condensation tank by pipeline, and the feedwater delivery side of pump links to each other with first import of second waste heat boiler; Second import of described second waste heat boiler links to each other by pipeline with the outlet of weary wind oxidation unit.
Above-mentioned coal mine gas comprehensive application system wherein, also comprises the first control sensing element in the described mine air-lack processing subsystem, described first sensing element comprises first motor operated valve, first electromagnetic valve, first-hand brake control valve and first sensor; Described first motor operated valve, first electromagnetic valve, first-hand brake control valve and first sensor are successively set on the pipeline between the import of the outlet of weary wind oxidation unit and second waste heat boiler; The air intake of described first motor operated valve is connected by pipeline with the outlet of described weary wind oxidation unit, and the outlet of described first sensor is connected with second import of described second waste heat boiler by pipeline.
Above-mentioned coal mine gas comprehensive application system, wherein, described the 3rd control sensing element comprises the 3rd motor operated valve, the 3rd electromagnetic valve, the 3rd hand control valve and the 3rd sensor; Described the 3rd motor operated valve, the 3rd electromagnetic valve, the 3rd hand control valve and the 3rd sensor are successively set in the outlet and the pipeline between the blending device of high concentration gas pretreatment unit, and the import of described the 3rd motor operated valve is connected by pipeline with the outlet of high concentration gas pretreatment unit; The outlet of described the 3rd sensor links to each other by the import of pipeline with the blending device.
Above-mentioned coal mine gas comprehensive application system, wherein, described weary wind is carried linkage to comprise weary wind and is carried connecting pipe, exhaust stack and move door; Described weary wind carries the air inlet port of connecting pipe to be connected with the gas outlet of weary wind components of assays, blending device respectively, and weary wind carries the gas outlet of connecting pipe to link to each other with the air inlet port of weary wind oxidation unit; Described exhaust stack is arranged on carries middle part one epitaxial lateral overgrowth of connecting pipe to stretch, and weary wind carries the inner chamber and the exhaust stack inner chamber of connecting pipe to connect; A described position of giving vent to anger that is arranged on exhaust stack and weary wind conveying connecting pipe of moving, this moves door and can move in this position control; This moves door and carries the gas outlet of connecting pipe suitable with the gas outlet and the weary wind of exhaust stack.
Above-mentioned coal mine gas comprehensive application system wherein, also comprises the second control sensing element in the described Heat Treatment subsystem, the described second control sensing element comprises second motor operated valve, second electromagnetic valve, second-hand's brake control valve and second sensor; Described second motor operated valve, second electromagnetic valve, second-hand's brake control valve and second sensor are successively set in the outlet and the pipeline between first waste heat boiler of high concentration fuel gas generation unit, low-concentration fuel generating set; The import of described second motor operated valve links to each other with the high-temperature flue gas outlet of high concentration fuel gas generation unit, low-concentration fuel generating set respectively by pipeline; The high-temperature flue gas outlet of described second sensor links to each other with the high-temperature flue gas import of first waste heat boiler by pipeline.
Above-mentioned coal mine gas comprehensive application system, wherein, described Heat Treatment subsystem also comprises manual control part; Described manual control part comprises the 4th hand control valve, the 5th hand control valve, the 6th hand control valve and the 7th hand control valve; The import of described the 4th hand control valve is connected with extraneous softening water pipe; Described the 6th hand control valve is arranged on the pipeline between the 4th hand control valve and the condensation tank; Described the 5th hand control valve is arranged on the pipeline between second import of the outlet of the 4th hand control valve and first waste heat boiler; Described the 7th hand control valve is arranged in the outlet and the pipeline between the 6th hand control valve of first waste heat boiler.
Above-mentioned coal mine gas comprehensive application system, wherein, this coal mine gas comprehensive application system also comprises densimeter and flow meter, and the import of described densimeter links to each other with the outlet of weary wind oxidation unit, first waste heat boiler respectively by pipeline; The import and export of described flow meter links to each other with the outlet of densimeter and the import of chimney respectively by pipeline.
Above-mentioned coal mine gas comprehensive application system, wherein, described coal mine gas components of assays comprises coal mine gas concentration meter, coal mine gas flow meter, coal mine gas thermometer, coal mine gas pressure meter and coal mine gas hand control valve; Described coal mine gas concentration meter, coal mine gas flow meter, coal mine gas thermometer, coal mine gas pressure meter and coal mine gas hand control valve are successively set on the pipeline between the outlet of coal mine gas extraction pump house and high concentration gas pretreatment unit, the security conveyer import, the import of described coal mine gas concentration meter links to each other by the outlet of pipeline with coal mine gas extraction pump house, and the outlet of described coal mine gas hand control valve links to each other with high concentration gas pretreatment unit, security conveyer import by pipeline.
Above-mentioned coal mine gas comprehensive application system, wherein, described mine air-lack components of assays comprises mine air-lack densimeter, mine air-lack flow meter, mine air-lack thermometer, mine air-lack pressure meter and mine air-lack hand control valve; Described mine air-lack densimeter, mine air-lack flow meter, mine air-lack thermometer, mine air-lack pressure meter and mine air-lack hand control valve are successively set on the air outlet and the pipeline between the weary wind conveying linkage in coalmine ventilation tunnel; The import of described mine air-lack densimeter links to each other by the air outlet of pipeline with the coalmine ventilation tunnel, and the outlet of described mine air-lack hand control valve carries the import of linkage to link to each other by pipeline with blending device, weary wind.
The utility model coal mine gas comprehensive application system compared with prior art, the advantage that has is:
1, the utility model can be used in the colliery coal mine gas of variable concentrations being taked different process routes and difference thereof, whole coal mine gases is realized comprehensive utilization, improve the gas pumping rate, ensure Safety of Coal Mine Production, make the utilization rate of whole coal mine gas reach maximization, promote the coal industry sustainable development.
2, the utility model can fall water in the gas and contaminant filter owing to be provided with pretreatment unit, and the gas of discharging dry cleansing further utilizes.
3, the utility model is carried linkage owing to be provided with weary wind in the mine air-lack processing subsystem, moves door by adjusting and can control weary wind conveying, guarantees weary wind delivery safety.When weary wind oxidation unit is shut down, open and diffuse mouth, avoid carrying connecting pipe gas enrichment danger.
4, the utility model is owing to be provided with weary wind oxidation unit in the mine air-lack processing subsystem; Handle coal mine to ventilate mash gas, reduced the discharging of greenhouse gases to the full extent, realize the target of carbon emission reduction.
5, the utility model is owing to be provided with the UTILIZATION OF VESIDUAL HEAT IN subsystem, reclaim combustion gas by the UTILIZATION OF VESIDUAL HEAT IN circulation, generating set reaches heat unnecessary when lacking the operation of wind oxidation unit, for total system provides from electricity consumption, reduce the consumption of energy, realized the maximum using of coal mine gas.
6, the utility model armamentarium is implemented overall monitor by components of assays, sensing control parts, and the automaticity height has ensured the safety and steady operation.
Description of drawings
Fig. 1 is the schematic diagram of the utility model coal mine gas comprehensive application system.
The specific embodiment
Adopt the embodiment of colliery comprehensive application system to be further elaborated below in conjunction with Fig. 1 to the utility model.
See also shown in Figure 1ly, the coal mine gas comprehensive application system comprises coal mine gas components of assays 1, mine air-lack components of assays 8, high concentration gas processing subsystem 2, low concentration gas processing subsystem 3, mine air-lack processing subsystem 4, Heat Treatment subsystem 5, flow meter 71, densimeter 72.The input port of coal mine gas components of assays 1 is connected by the air outlet of pipeline with coal mine gas extraction pump house;
Coal mine gas components of assays 1 comprises coal mine gas concentration meter 11, coal mine gas flow meter 12, coal mine gas thermometer 13, coal mine gas pressure meter 14 and coal mine gas hand control valve 15; Be successively set on the pipeline.
The input port of mine air-lack components of assays 8 is connected by the air outlet of pipeline with the coalmine ventilation tunnel;
Mine air-lack components of assays 8 comprises mine air-lack densimeter 81, mine air-lack flow meter 82, mine air-lack thermometer 83, mine air-lack pressure meter 84 and mine air-lack hand control valve 85; Be successively set on the pipeline.
High concentration gas processing subsystem 2 comprises high concentration gas pretreatment unit 21, high concentration fuel gas generation unit 22.Equipment such as the high concentration gas pretreatment unit 21 built-in dehumidifying strainers of employing prior art, condenser, blower fan, dust removal filter are formed, by comprising connecting pipe, valve, measuring instrument and control and regulation equipment.High concentration gas is introduced the dehumidifying strainer,, reduce the moisture in the gas,, methane gas is pressurizeed by blower fan by its dehumidifying dehydrating function.Pass through condenser again, the condenses in the gas is separated out, pass through dust removal filter at last, reduce the fuel gas and dust impurity content, enter high concentration fuel gas generation unit 22.High concentration fuel gas generation unit 22 adopts the G3520 type, and high concentration fuel gas generation unit 22 comprises crank-link mechanism, valve actuating mechanism, feed system, lubricating system, cooling system, ignition system, pneumatic system and electronic governing system; The high concentration fuel gas generation unit course of work is made up of air inlet, compression, burning expansion and four processes of exhaust, and when each working cycles was finished, reciprocal twice of piston, crank rotated for two weeks.
The air inlet port of high concentration gas pretreatment unit 21 is connected by pipeline with the outlet of mine air-lack components of assays 8, the air inlet port of high concentration fuel gas generation unit 22 is connected by the gas outlet of pipeline with high concentration gas pretreatment unit 21, and the power end of high concentration fuel gas generation unit 22 is connected with the high voltage variable electronic box of electrical network 6 by cable; High concentration fuel gas generation unit 22 electricity are incorporated national grid into.
Low concentration gas processing subsystem 3 comprises security conveyer 31, low concentration gas pretreatment unit 32, low-concentration fuel generating set 33; Adopting the model of the security conveyer 31 of prior art is AQ200, security conveyer 31 comprises front end voltage stabilizing exhaust stack, hydrolock back-fire relief explosion venting device, post stream device, circulating device, front end observation tube, rear end observation tube, gas and water separator, rear end voltage stabilizing exhaust stack, bidirectional flame arrester and circulating water pool and forms, the low concentration gas that goes out from the colliery extraction enters front end voltage stabilizing exhaust stack by total escape pipe connection, carrying out superpressure diffuses, the hydrolock back-fire relief explosion venting device that is provided with prevents the Device in Gas blast; Low concentration gas enters into post stream device, produces intermittent loose water body plug flow, and the low concentration gas that flows in the gas conveyance conduit is divided into segment, and flame enters the low concentration gas transfer pipeline and produces catastrophe when avoiding the tempering of gas utilization facility; Enter into circulating device, current are flowed along the inwall of conveyance conduit, in the gas course of conveying, form moisture film on the inwall of conveyance conduit, the burning things which may cause a fire disaster that the circulation moisture film can be blocked in the conveyance conduit external environment condition effectively spreads in the pipeline, avoids taking place in the pipeline catastrophe; Device in Gas is checked flowing gas state through front end, rear end observation tube; Enter moisture trap, play dehydration, with Device in Gas and moisture from, water is introduced by pipeline and is looped back the pond, Device in Gas then enters rear end voltage stabilizing exhaust stack, carries out superpressure and diffuses; The bidirectional flame arrester that is provided with prevents tempering, connects by pipeline the low concentration gas pneumatic transmission is gone into low concentration gas pretreatment unit 32.The low concentration gas pretreatment unit 32 built-in dehumidifying strainers of prior art, baffle plate, screen pack.Low concentration gas is introduced mechanical type dehumidifying strainer, and by its dehumidifying dehydrating function, moisture gas runs into and is separated after baffle plate intercepts, reduce the moisture in the gas, pass through screen pack at last, reduce gaseous impurity content, enter low-concentration fuel generating set 33.The low-concentration fuel generating set 33 of prior art adopts the GFI500 type, and this unit comprises crank-link mechanism, valve actuating mechanism, feed system, lubricating system, cooling system, ignition system, pneumatic system and electronic governing system; The high concentration fuel gas generation unit course of work is made up of air inlet, compression, burning expansion and four processes of exhaust, and when each working cycles was finished, reciprocal twice of piston, crank rotated for two weeks.
The air inlet port of security conveyer 31 is connected by pipeline with the outlet of components of assays, low concentration gas pretreatment unit 32 air inlet ports are connected by the gas outlet of pipeline with security conveyer 31, and low-concentration fuel generating set 33 air inlet ports are connected by the gas outlet of pipeline with low concentration gas pretreatment unit 21; The power end of described low-concentration fuel generating set 33 is connected with the high voltage variable electronic box of electrical network 6 by cable; Low-concentration fuel generating set 22 electricity are incorporated national grid into.
Mine air-lack processing subsystem 4 comprises blending device 45, weary wind, and to carry linkage 46, model be the weary wind oxidation unit 42 of RNV100.The air inlet port of described blending device 45 carries the air inlet port of linkage 46 to link to each other with the gas outlet of the gas outlet of the 3rd control sensing element 44, weary wind components of assays 8 with weary wind by pipeline respectively with the gas outlet.Be provided with gas distributor in the described blending device 45, when high concentration gas gas enters distributor in the blending device 45 by the 3rd control sensing element 44, drive ambient gas at the short distance internal reaction, with full and uniform mixing of mine air-lack in the gas outlet pipeline of weary wind components of assays 8, the Device in Gas after the blending enters weary wind and carries linkage 46.
Weary wind is carried linkage to comprise weary wind and is carried connecting pipe 461, exhaust stack 462, moves door 463.Weary wind carry the air inlet port of connecting pipe 461 and gas outlet respectively with the gas outlet of weary wind components of assays 8, blending device 45, the air inlet port of weary wind oxidation unit 42 links to each other; Exhaust stack 462 is arranged on carries middle part one epitaxial lateral overgrowth of connecting pipe 461 to stretch, and carries connecting pipe 461 inner chambers and exhaust stack 462 inner chambers to connect.Move the end that door 463 is arranged on the gas outlet of exhaust stack 462, carry the gas outlet of connecting pipe 461 suitable with the gas outlet and the weary wind of exhaust stack 462.Gas after mine air-lack, the blending enters weary wind and carries connecting pipe 461; control moves door 463 and closes and diffuse mouth; directly the gas outlet by weary wind linkage enters weary wind oxidation unit 42; when weary wind oxidation unit 42 is shut down; move door 463 unlatchings by control and diffuse mouth, avoid carrying connecting pipe 461 gas enrichment danger.
Weary wind oxidation unit 42 comprises shell body, control system, honeycomb heat accumulation ceramic disk, electric heater, built-in heat exchanger, air inlet pipe, escape pipe, water inlet pipe, outlet pipe and pottery insulation; Its control system is made up of control module, temperature pick up, sensing methane concentration device and electrically operated valve etc.; All the sensors all has signal conductor to be connected with control module with electrically operated valve, mine air-lack carries linkage 46 to enter weary wind oxidation unit 42 by weary wind, use earlier the small amount of electrical energy heating starting, stop electrical heating after reaching the methane oxidation reaction temperature, methane in the weary wind continues oxidation reaction, generates carbon dioxide and produces heat energy.This device cracking trace methane reclaims the heat that cracking produces, and when the minimizing coal mine gas causes greenhouse effect, realizes the recycling of the energy.
Heat Treatment subsystem 5 comprises UTILIZATION OF VESIDUAL HEAT IN circulating device 51, first waste heat boiler, 52 steam turbines 56 and generator 53; Steam turbine 56 is the condensing-type steam turbine of prior art, and this machine is made up of static cascade and moving blades, and steam enters condenser, condenses the pushing generator acting being lower than under the atmospheric pressure situation; First waste heat boiler of prior art comprises the bearing and the suspension bracket of drum, movable gas hood, fire door section flue, oblique 1 section flue, oblique 2 sections flues, the 1 section flue in end, end 2 sections flues, charge pipe (blanking slide) groove, oxygen muzzle, nitrogen seal device and nitrogen blockings, manhole, elementary errors pressure pressure obtaning device, flue.It is six closed circuits that waste heat boiler is divided into, each closed circuit is made up of down-comer and tedge, each section flue feedwater enters each heating surface be incorporated into the next part case of each flue by down-comer from drum after, water produces steam after by heating surface and enters the inlet header case, introduces drum by tedge again.
UTILIZATION OF VESIDUAL HEAT IN circulating device 51 links to each other by pipeline with first waste heat boiler 52; The high-temperature flue gas import of first waste heat boiler 52 links to each other with the high-temperature flue gas outlet of high concentration fuel gas generation unit 22, low-concentration fuel generating set 33 by pipeline respectively; The main shaft of generator 53 links to each other with the main shaft of steam turbine 56, and the power end of generator 53 is connected with the high voltage variable electronic box of electrical network 6 by cable.
UTILIZATION OF VESIDUAL HEAT IN circulating device 51 comprises second waste heat boiler 511, electromagnetic valve 512, superheater 513 condensers 514, condensation tank 515 and feed pump 516;
The air inlet port of electromagnetic valve 512 is connected with the gas outlet of superheater 513 and the air inlet port of steam turbine 56 respectively by pipeline with the gas outlet, the air inlet port of condenser 514 is connected with the outlet of steam turbine 56 respectively by pipeline, the two ends import of condensation tank 515 is the outlet by pipeline and condenser 514 respectively, the outlet of first waste heat boiler 52 connects, the water inlet of feed pump 516 is connected by the outlet of pipeline with condensation tank 515, the outlet of feed pump 516 links to each other with the first import 511a of second waste heat boiler 511, and the second import 511b of second waste heat boiler 511 links to each other by pipeline with the outlet of weary wind oxidation unit 42.
Also comprise the first control sensing element 43 in the mine air-lack processing subsystem 4; First sensing element 43 comprises first motor operated valve 431, first electromagnetic valve 432, first-hand brake control valve 433 and first sensor 434; First motor operated valve 431, first electromagnetic valve 432, first-hand brake control valve 433 and first sensor 434 are successively set on the pipeline between the import of the outlet of weary wind oxidation unit 42 and second waste heat boiler 511.
Also comprise second control sensing element 54 and the manual control part 55 in the Heat Treatment subsystem 5;
The import of the second control sensing element 54 links to each other with 500 ℃ of high-temperature flue gas outlets of high concentration fuel gas generation unit 22, low-concentration fuel generating set 33 respectively by pipeline;
The second control sensing element 54 comprises second motor operated valve 541, second electromagnetic valve 542, second-hand's brake control valve 543 and second sensor 544; Second motor operated valve 541, second electromagnetic valve 542, second-hand's brake control valve 543 and second sensor 544 are successively set in the high-temperature flue gas outlet and the pipeline between first waste heat boiler 52 of high concentration fuel gas generation unit 22, low-concentration fuel generating set 33, and the outlet of second sensor 544 links to each other with 800 ℃ of high-temperature flue gas imports of first waste heat boiler 52 by pipeline.
Also comprise the 3rd control sensing element 44 in the weary wind processing subsystem 4; The import of the 3rd control sensing element 44 links to each other with 21 outlets of high concentration gas pretreatment unit respectively by pipeline; The 3rd control sensing element 44 comprises the 3rd motor operated valve 441, the 3rd electromagnetic valve 442, the 3rd hand control valve 443 and the 3rd sensor 444; The 3rd motor operated valve 441, the 3rd electromagnetic valve 442, the 3rd hand control valve 443 and the 3rd sensor 444 are successively set in the outlet and the pipeline between the blending device of high concentration gas pretreatment unit 21, and the outlet of the 3rd sensor 444 links to each other by the import of pipeline with blending device 45.
Manual control part 55 comprises the 4th hand control valve 551, the 5th hand control valve 552, the 6th hand control valve 553 and the 7th hand control valve 554, manual control part 55 is arranged between the condensation tank 515 and first waste heat boiler 52, carry out demineralized water with the external world simultaneously and replenish, the 5th hand control valve 552 is put between the import of 551 outlets of the 4th hand control valve and first waste heat boiler 52.
Densimeter 72 imports are connected by the outlet of pipeline with weary wind oxidation unit 42, first waste heat boiler 52 respectively, and the import and export of flow meter 71 links to each other with chimney 7 with the outlet of densimeter 72 respectively.
By devices such as employing high concentration fuel gas generation unit 22, low-concentration fuel generating set 33, weary wind oxidation unit 42, first waste heat boiler 52, steam turbines 56 coal gas is carried out circulating generation in this system.When the minimizing coal mine gas causes greenhouse effect, realize the recycling of the discarded energy.
Introduce the operation workflow of the utility model coal mine gas comprehensive application system below in conjunction with Fig. 1.
Step 1 is by coal mine gas extraction pump house gas extraction.
Step 2 will be sent into coal mine gas components of assays 1 from the coal mine gas of coal mine gas extraction pump house extraction, coal mine gas concentration meter 11 according to coal mine gas components of assays 1, coal mine gas flow meter 12, coal mine gas thermometer 13, coal mine gas pressure meter 14 demonstrates the concentration of coal mine gas, parameters such as flow, air inflow by the gas in coal mine gas hand control valve 15 conditioning equipments, if gas density concentration is introduced high concentration gas processing subsystem 2 greater than 30% by pipeline, if gas density is incorporated into low concentration gas processing subsystem 3 less than 30% by pipeline greater than 5%.
Step 2.1 high concentration gas processing subsystem 1 changes into the electric energy 6 produced simultaneously high-temperature flue gas that are connected to the grid with the gas chemical energy, enters Heat Treatment subsystem 5.
Step 2.1.1 high concentration gas enters evolution such as high concentration gas pretreatment unit 21 dewaters, dedusting; If necessary the high concentration gas gas after the purified treatment is sent into natural gas line, supply peripheral resident and use.
Step 2.1.2 high concentration fuel gas generation unit 22 changes into electric energy with pretreated high concentration gas, and generating is connected to the grid, and the high-temperature flue gas of generation enters first waste heat boiler 52 of Heat Treatment subsystem 5.
Step 2.2 low concentration gas processing subsystem 3 changes into the electric energy produced simultaneously high-temperature flue gas that is connected to the grid with the gas chemical energy, enters Heat Treatment subsystem 5.
Step 2.2.1 low concentration gas enters low concentration gas pretreatment unit 32 by security conveyer 31.
Step 2.2.2 low concentration gas pretreatment unit 32 is introduced low-concentration fuel generating set 32 with the low concentration gas dedusting of dewatering with low concentration gas.
Step 2.2.3 low-concentration fuel generating set 32 changes into electric energy with low concentration gas and is connected to the grid, and produces high-temperature flue gas simultaneously, enters first waste heat boiler 52 of Heat Treatment subsystem 5.
Step 2.3 will be sent into mine air-lack components of assays 8 from the mine air-lack in coalmine ventilation tunnel, demonstrate the parameter such as concentration, flow of mine air-lack according to mine air-lack densimeter 81, mine air-lack flow meter 82, mine air-lack thermometer 83, the mine air-lack pressure meter 84 of mine air-lack components of assays 8, by the air inflow of the weary wind in hand control valve 85 conditioning equipments, concentration is incorporated into mine air-lack processing subsystem 4 less than 0.7% weary wind by pipeline.
Mine air-lack processing subsystem 4 will lack wind and be oxidized to high-temperature flue gas, enter Heat Treatment subsystem 5.
Step 2.3.1 works as mine air-lack concentration more than 0.25%, when reaching the oxidation unit operating condition, can directly carry linkage 46 enter weary wind oxidation unit 42 by weary wind and carry out oxidation reaction;
When step 2.3.2 was lower than 0.25% when mine air-lack concentration, blending device 45 was with mine air-lack and high concentration gas blending; The 3rd motor operated valve 441, the 3rd electromagnetic valve 442, the 3rd hand-operated valve 443 and the 3rd sensor 444 according to the 3rd control sensing element 44, numerical value such as the concentration of the 3rd sensor 444 demonstration high concentration gas gases and flow, regulate the 3rd motor operated valve 441, the 3rd electromagnetic valve 442, when both lost efficacy, regulate the 3rd hand control valve 443, adjusting enters the high concentration gas gas flow of blending device 45, guarantee that blending gas is even, reach the oxidation unit operating condition, the gas after the blending carries linkage 46 to enter weary wind oxidation unit 42 by weary wind.
Step 2.3.3 is weary, and the general mood body is subjected to thermal oxide in weary wind oxidation unit 42, Pintsch process, reaction generate carbon dioxide and water enters the atmosphere discharge: the high-temperature flue gas that produces 800 ℃ under the operation normal condition is drawn from exhaust opening, enters second waste heat boiler 511 of waste heat circulating device 51.
The high-temperature flue gas that step 3 Heat Treatment subsystem 5 produces gas changes into electric energy and is connected to the grid.
The step 3.1 second control sensing element 54 is regulated the high-temperature flue gas amount that enters first waste heat boiler 52.
Step 3.1.1 high concentration fuel gas generation unit 22,33 groups of high-temperature flue gas that generate of low-concentration fuel generator, numerical value such as concentration that shows high-temperature flue gas through second motor operated valve 541, second electromagnetic valve 542, second-hand's brake control valve 543 and second sensor, 544, the second sensors 544 of the second control sensing element 55 and flow.
Step 3.1.2 regulates second motor operated valve 441, second electromagnetic valve 442, when both lost efficacy, regulates second-hand's brake control valve 443, regulates the high-temperature flue gas amount that enters first waste heat boiler 52, guarantees that first waste heat boiler 511 normally moves.Produce superheated steam by first waste heat boiler 52, carry out heat exchange and reclaim, produce the higher demineralized water of temperature, enter condensation tank 515, enter waste heat circulating device 51.
Step 3.2 manual control part replenishes or the intensification demineralized water.
Step 3.2.1 opens the 4th hand control valve 551, closes the 5th hand control valve 552 simultaneously, makes outside demineralized water enter condensation tank 515, replenishes the water yield that 51 generatings of waste heat circulating device consume.
Step 3.2.2 opens the 4th hand control valve 551, the 5th hand control valve 552 simultaneously, after making demineralized water enter 52 intensifications of first waste heat boiler, open the 6th hand control valve 553, the 7th hand control valve 544, enter condensation tank 515, amount of makeup water enters feed pump 516 and boosts.
The heat energy of step 3.3 UTILIZATION OF VESIDUAL HEAT IN circulating device 51 promotes steam turbine 56 works done, and drives generator 53 generation electric energy.
The high-temperature flue gas that the weary wind oxidation unit 42 of step 3.3.1 produces is by the first sensor 434 of the first control sensing element 43, the concentration and the flow that show high-temperature flue gas, regulate motor-operated control valve 431, electromagnetic valve 432, when losing efficacy, both can regulate hand control valve 433, adjusting enters the high-temperature flue gas amount of second waste heat boiler, guarantees that second waste heat boiler 511 normally moves.
Step 3.3.2 second waste heat boiler 511 reclaims heat and generates superheated steam, promotes steam turbine 513 actings, drives generator 53 and produces electric energy, is connected to the grid, and has realized the energy recovery utilization.
The remaining lower pressure steam in step 3.4 steam turbine 56 acting back enters condenser 514, condenses into after water enters condensation tank 515, and feed pump 516 is boosted, and enters second waste heat boiler, 511 circulating generations once more.
After the low-temperature flue gas that step 4 coal mine gas comprehensive application system produces is measured low-temperature flue gas concentration, flow by densimeter 72, flow meter 71, with free of contamination low-temperature flue gas from chimney 7 emptyings.
In sum, the utility model adopts the colliery comprehensive application system to use different process routes to carry out the different processes of utilizing to the coal mine gas from the variable concentrations of mine collection, fully utilizes, and makes the utilization rate of whole coal mine gas reach maximization.Wherein, the coal mine gas utilization rate reaches more than 98%, and weary wind utilization rate reaches more than 96%, and comprehensive utilization ratio reaches more than 97%.
Although content of the present utility model has been done detailed introduction by above preferred embodiment, will be appreciated that above-mentioned description should not be considered to restriction of the present utility model.After those skilled in the art have read foregoing, for multiple modification of the present utility model with to substitute all will be conspicuous.Therefore, protection domain of the present utility model should be limited to the appended claims.
Claims (10)
1. coal mine gas comprehensive application system, it is characterized in that this application system comprises mine air-lack components of assays (8), coal mine gas components of assays (1), high concentration gas processing subsystem (2), low concentration gas processing subsystem (3), mine air-lack processing subsystem (4) and Heat Treatment subsystem (5);
The input port of described coal mine gas components of assays (1) links to each other by the air outlet of pipeline with coal mine gas extraction pump house;
The input port of described mine air-lack components of assays (8) links to each other by the air outlet of pipeline with the coalmine ventilation tunnel;
Described high concentration gas processing subsystem (2) comprises high concentration gas pretreatment unit (21), high concentration fuel gas generation unit (22); The air inlet port of described high concentration gas pretreatment unit (21) links to each other by pipeline with the outlet of coal mine gas components of assays (1), the air inlet port of high concentration fuel gas generation unit (22) links to each other by the gas outlet of pipeline with high concentration gas pretreatment unit (21), and the power end of described high concentration fuel gas generation unit (22) links to each other with electrical network (6) by cable;
Described low concentration gas processing subsystem (3) comprises security conveyer (31), low concentration gas pretreatment unit (32), low-concentration fuel generating set (33); The air inlet port of described security conveyer (31) links to each other by pipeline with the outlet of coal mine gas components of assays (1), low concentration gas pretreatment unit (32) air inlet port links to each other by the gas outlet of pipeline with security conveyer (31), and low-concentration fuel generating set (33) air inlet port links to each other by the gas outlet of pipeline with low concentration gas pretreatment unit (21); The power end of described low-concentration fuel generating set (33) links to each other with electrical network (6) by cable;
Described mine air-lack processing subsystem (4) comprises weary wind and carries linkage (46), weary wind oxidation unit (42), the 3rd control sensing element (44), blending device (45); Described weary wind carries the air inlet port of linkage (46) to be connected by the gas outlet of pipeline with weary wind components of assays (8), blending device (45) respectively, and its gas outlet links to each other with the air inlet port of weary wind oxidation unit (42); The import of described the 3rd control sensing element (44) links to each other with the outlet of high concentration gas pretreatment unit (21); The air inlet port of described blending device (45) links to each other with the gas outlet of weary wind components of assays (8), the gas outlet of the 3rd control sensing element (44) by pipeline respectively;
Described Heat Treatment subsystem (5) comprises UTILIZATION OF VESIDUAL HEAT IN circulating device (51), first waste heat boiler (52), steam turbine (56) and generator (53); Described UTILIZATION OF VESIDUAL HEAT IN circulating device (51) links to each other by pipeline with first waste heat boiler (52), steam turbine (56) respectively; The high-temperature flue gas import of described first waste heat boiler (52) links to each other with the high-temperature flue gas outlet of high concentration fuel gas generation unit (22), low-concentration fuel generating set (33) by pipeline respectively; The main shaft of described generator (53) links to each other with the main shaft of steam turbine (56), and generator (53) is connected with electrical network (6) by cable.
2. coal mine gas comprehensive application system according to claim 1, it is characterized in that described UTILIZATION OF VESIDUAL HEAT IN circulating device (51) comprises second waste heat boiler (511), electromagnetic valve (512), superheater (513) condenser (514), condensation tank (515) and feed pump (516);
The air inlet port of described electromagnetic valve (512) is connected with the gas outlet of superheater (513) and the air inlet port of steam turbine (56) respectively by pipeline with the gas outlet; The air inlet port of described condenser (514) is connected by the outlet of pipeline with steam turbine (56);
The two ends import of described condensation tank (515) is connected with the outlet of condenser (514), the outlet of first waste heat boiler (52) by deferent respectively; The water inlet of described feed pump (516) is connected by the outlet of pipeline with condensation tank (515), and the outlet of feed pump (516) links to each other with first import (511a) of second waste heat boiler (511); Second import (511b) of described second waste heat boiler (511) links to each other by pipeline with the outlet of weary wind oxidation unit (42).
3. coal mine gas comprehensive application system according to claim 1, it is characterized in that, also comprise the first control sensing element (43) in the described mine air-lack processing subsystem (4), described first sensing element comprises first motor operated valve (431), first electromagnetic valve (432), first-hand brake control valve (433) and first sensor (434);
Described first motor operated valve (431), first electromagnetic valve (432), first-hand brake control valve (433) and first sensor (434) are successively set on the pipeline between the import of the outlet of weary wind oxidation unit (42) and second waste heat boiler (511);
The air intake of described first motor operated valve (431) is connected by pipeline with the outlet of described weary wind oxidation unit (42), and the outlet of described first sensor (434) is connected with second import (511b) of described second waste heat boiler (511) by pipeline.
4. coal mine gas comprehensive application system according to claim 1, it is characterized in that described the 3rd control sensing element (44) comprises the 3rd motor operated valve (441), the 3rd electromagnetic valve (442), the 3rd hand control valve (443) and the 3rd sensor (444);
Described the 3rd motor operated valve (441), the 3rd electromagnetic valve (442), the 3rd hand control valve (443) and the 3rd sensor (444) are successively set in the outlet and the pipeline between the blending device (45) of high concentration gas pretreatment unit (21), and the import of described the 3rd motor operated valve (441) is connected by pipeline with the outlet of high concentration gas pretreatment unit (21); The outlet of described the 3rd sensor (444) links to each other by the import of pipeline with blending device (45).
5. coal mine gas comprehensive application system according to claim 1 is characterized in that, described weary wind is carried linkage (46) to comprise weary wind and carried connecting pipe (461), exhaust stack (462) and move door (463);
Described weary wind carries the air inlet port of connecting pipe (461) to be connected with the gas outlet of weary wind components of assays (8), blending device (45) respectively, and weary wind carries the gas outlet of connecting pipe (461) to link to each other with the air inlet port of weary wind oxidation unit (42);
Described exhaust stack (462) is arranged on weary wind and carries middle part one epitaxial lateral overgrowth of connecting pipe (461) to stretch, and weary wind carries the inner chamber and exhaust stack (462) inner chamber of connecting pipe (461) to connect;
The described door (463) that moves is arranged on the position of giving vent to anger that exhaust stack (462) and weary wind are carried connecting pipe (461), and this moves door (463) can be mobile in this position control; This moves door (463) and carries the gas outlet of connecting pipe suitable with the gas outlet and the weary wind of exhaust stack (462).
6. coal mine gas comprehensive application system according to claim 1 is characterized in that, also comprises the second control sensing element (54) in the described Heat Treatment subsystem (5); The described second control sensing element (54) comprises second motor operated valve (541), second electromagnetic valve (542), second-hand's brake control valve (543) and second sensor (544);
Described second motor operated valve (541), second electromagnetic valve (542), second-hand's brake control valve (543) and second sensor (544) are successively set in the outlet and the pipeline between first waste heat boiler (52) of high concentration fuel gas generation unit (22), low-concentration fuel generating set (33);
The import of described second motor operated valve (541) links to each other with the high-temperature flue gas outlet of high concentration fuel gas generation unit (22), low-concentration fuel generating set (33) respectively by pipeline; The high-temperature flue gas outlet of described second sensor (544) links to each other by the high-temperature flue gas import of pipeline with first waste heat boiler (52).
7. coal mine gas comprehensive application system according to claim 1 is characterized in that, described Heat Treatment subsystem (5) also comprises manual control part (55); Described manual control part (55) comprises the 4th hand control valve (551), the 5th hand control valve (552), the 6th hand control valve (553) and the 7th hand control valve (554);
The import of described the 4th hand control valve (551) is connected with extraneous softening water pipe; Described the 6th hand control valve (553) is arranged on the pipeline between the 4th hand control valve (551) and the condensation tank (515); Described the 5th hand control valve (552) is arranged on the pipeline between second import of the outlet of the 4th hand control valve (551) and first waste heat boiler (52); Described the 7th hand control valve (554) is arranged in the outlet and the pipeline between the 6th hand control valve (553) of first waste heat boiler (52).
8. coal mine gas comprehensive application system according to claim 1, it is characterized in that, also comprise densimeter (72) and flow meter (71), the import of described densimeter (72) links to each other with the outlet of weary wind oxidation unit (42), first waste heat boiler (52) respectively by pipeline; The import and export of described flow meter (71) links to each other with the outlet of densimeter (72) and the import of chimney (7) respectively by pipeline.
9. coal mine gas comprehensive application system according to claim 1, it is characterized in that described coal mine gas components of assays (1) comprises coal mine gas concentration meter (11), coal mine gas flow meter (12), coal mine gas thermometer (13), coal mine gas pressure meter (14) and coal mine gas hand control valve (15);
Described coal mine gas concentration meter (11), coal mine gas flow meter (12), coal mine gas thermometer (13), coal mine gas pressure meter (14) and coal mine gas hand control valve (15) are successively set on the outlet and the high concentration gas pretreatment unit (21) of coal mine gas extraction pump house, on the pipeline between security conveyer (31) import, the import of described coal mine gas concentration meter (11) links to each other by the outlet of pipeline with coal mine gas extraction pump house, the outlet of described coal mine gas hand control valve (15) by pipeline respectively with high concentration gas pretreatment unit (21), security conveyer (31) import links to each other.
10. coal mine gas comprehensive application system according to claim 1, it is characterized in that described mine air-lack components of assays (8) comprises mine air-lack densimeter (81), mine air-lack flow meter (82), mine air-lack thermometer (83), mine air-lack pressure meter (84) and mine air-lack hand control valve (85);
Described mine air-lack densimeter (81), mine air-lack flow meter (82), mine air-lack thermometer (83), mine air-lack pressure meter (84) and mine air-lack hand control valve (85) are successively set on the air outlet and the pipeline between the weary wind conveying linkage (46) in coalmine ventilation tunnel;
The import of described mine air-lack densimeter (81) links to each other by the air outlet of pipeline with the coalmine ventilation tunnel, and the outlet of described mine air-lack hand control valve (85) carries the import of linkage (46) to link to each other with blending device (45), weary wind respectively by pipeline.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201020677373XU CN201963341U (en) | 2010-12-24 | 2010-12-24 | Comprehensive application system of coalmine gas |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201020677373XU CN201963341U (en) | 2010-12-24 | 2010-12-24 | Comprehensive application system of coalmine gas |
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| CN102493832A (en) * | 2011-11-16 | 2012-06-13 | 新汶矿业集团有限责任公司 | Method for safely generating power by aid of unstable gas sources |
| CN102562131A (en) * | 2010-12-24 | 2012-07-11 | 上海攀极投资有限公司 | Coal mine gas comprehensive application system and application method thereof |
| CN102564146A (en) * | 2012-02-03 | 2012-07-11 | 北京京诚凤凰工业炉工程技术有限公司 | Heating furnace flue gas waste heat recovery and power generation system |
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| CN108153225A (en) * | 2017-12-22 | 2018-06-12 | 山西嘉源致远新能源科技有限公司 | Unit power ring-type distributor for gas power station unit and power distribution method |
| CN108153225B (en) * | 2017-12-22 | 2020-04-07 | 山西嘉源致远新能源科技有限公司 | Power distribution method for gas power station unit |
| CN111810224A (en) * | 2020-07-21 | 2020-10-23 | 河南平宝煤业有限公司 | Deep coal resource development method integrating gas treatment, extraction and utilization |
| CN112901337A (en) * | 2021-04-02 | 2021-06-04 | 贵州华气动力有限责任公司 | High-power low-concentration gas engine and gas supply method thereof |
| CN113047940A (en) * | 2021-04-02 | 2021-06-29 | 贵州华气动力有限责任公司 | Pre-combustion chamber using low-concentration gas |
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