CN105381694B - A kind of coal mine methane and the blending processing system to draw out methane - Google Patents
A kind of coal mine methane and the blending processing system to draw out methane Download PDFInfo
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- CN105381694B CN105381694B CN201510889236.XA CN201510889236A CN105381694B CN 105381694 B CN105381694 B CN 105381694B CN 201510889236 A CN201510889236 A CN 201510889236A CN 105381694 B CN105381694 B CN 105381694B
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- out methane
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- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 593
- 238000002156 mixing Methods 0.000 title claims abstract description 95
- 239000003245 coal Substances 0.000 title claims abstract description 66
- 238000012545 processing Methods 0.000 title claims abstract description 62
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 107
- 230000003647 oxidation Effects 0.000 claims abstract description 106
- 238000000034 method Methods 0.000 claims abstract description 12
- 230000008569 process Effects 0.000 claims abstract description 11
- 238000011144 upstream manufacturing Methods 0.000 claims description 24
- 230000003068 static effect Effects 0.000 claims description 20
- 230000001276 controlling effect Effects 0.000 claims description 17
- 238000004880 explosion Methods 0.000 claims description 14
- 238000000605 extraction Methods 0.000 claims description 14
- 238000012544 monitoring process Methods 0.000 claims description 14
- 230000001105 regulatory effect Effects 0.000 claims description 12
- 230000001629 suppression Effects 0.000 claims description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 12
- 238000010926 purge Methods 0.000 claims description 11
- 230000001939 inductive effect Effects 0.000 claims description 9
- 230000005540 biological transmission Effects 0.000 claims description 8
- 230000018044 dehydration Effects 0.000 claims description 8
- 238000006297 dehydration reaction Methods 0.000 claims description 8
- 238000005086 pumping Methods 0.000 claims description 7
- 239000000284 extract Substances 0.000 claims description 6
- 238000009825 accumulation Methods 0.000 claims description 4
- 238000012806 monitoring device Methods 0.000 claims description 2
- 150000001335 aliphatic alkanes Chemical class 0.000 claims 1
- 239000007789 gas Substances 0.000 description 165
- 230000006872 improvement Effects 0.000 description 17
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 12
- 241000196324 Embryophyta Species 0.000 description 7
- 229910002092 carbon dioxide Inorganic materials 0.000 description 6
- 239000001569 carbon dioxide Substances 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 238000013461 design Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000033228 biological regulation Effects 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 3
- 230000014759 maintenance of location Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000011109 contamination Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- VUZPPFZMUPKLLV-UHFFFAOYSA-N methane;hydrate Chemical compound C.O VUZPPFZMUPKLLV-UHFFFAOYSA-N 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000008093 supporting effect Effects 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 239000002918 waste heat Substances 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000005474 detonation Methods 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000007786 electrostatic charging Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 239000005431 greenhouse gas Substances 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/72—Organic compounds not provided for in groups B01D53/48 - B01D53/70, e.g. hydrocarbons
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D51/00—Auxiliary pretreatment of gases or vapours to be cleaned
- B01D51/10—Conditioning the gas to be cleaned
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/10—Mixing gases with gases
- B01F23/19—Mixing systems, i.e. flow charts or diagrams; Arrangements, e.g. comprising controlling means
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F7/00—Methods or devices for drawing- off gases with or without subsequent use of the gas for any purpose
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
- B01D2257/702—Hydrocarbons
- B01D2257/7022—Aliphatic hydrocarbons
- B01D2257/7025—Methane
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
-
- 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
- Y02C—CAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSE GASES [GHG]
- Y02C20/00—Capture or disposal of greenhouse gases
- Y02C20/20—Capture or disposal of greenhouse gases of methane
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Mining & Mineral Resources (AREA)
- Health & Medical Sciences (AREA)
- Geology (AREA)
- Geochemistry & Mineralogy (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biomedical Technology (AREA)
- Environmental & Geological Engineering (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Air Transport Of Granular Materials (AREA)
Abstract
The present invention provides a kind of coal mine methane and the blending processing system to draw out methane, including：Idle air blower cover (6), idle air conveyance conduit (7a), the connecting pipe that draws out methane (4), blender (M), mixed gas delivery pipeline (7b), air-introduced machine (11) and heat-accumulating type high-temperature oxidation unit (12)；The exhaust outlet of the connecting pipe that draws out methane (4) connects with idle air conveyance conduit (7a), idle air conveyance conduit (7a) is sucked into by the connecting pipe that draws out methane (4) so that drawing out methane, after the blended device of idle air (M) blending uniformly in idle air conveyance conduit (7a), heat-accumulating type high-temperature oxidation unit (12) is delivered to by mixed gas delivery pipeline (7b) and carries out oxidation processes.The idle air in coal mine and draw out methane progress safe collection, blending and conveying can be provided to safe source of the gas for later use projects such as heat-accumulating type high-temperature oxidations, by exhaustive oxidation product withdraw into atmospheric environment using above-mentioned blending processing system.
Description
Technical field
The present invention relates to mine energy conservation emission reduction, safety of coal mines technology and engineering field, and in particular to a kind of coal mine methane and
The blending processing system to draw out methane.
Background technology
In process of production, a large amount of gas stored in coal seam can be rushed to digging space in colliery, to ensure coal mine underground ore deposit
Air is safe and healthy, it is necessary to blast a large amount of fresh airs to underground mine in well, and the methane that these air-flows carry extremely low concentration is (low
It is discharged in air, is commonly called as " wind resource assessment " or " idle air " from underground through return air inlet in 0.75%).
Especially in some highly gassy mines, due to its working face gas density far beyond《Safety regulations in coal mine》Institute
Defined standard, the simple method using ventilation are difficult to the gas density of working face to control in allowed limits；Coal with
Gas Outburst mine, prominent dangerous also serious threat the life security of mine staff, govern the normal life of mine
Production.In the case, it is necessary to take the mode of gas drainage under suction to improve the safety production situation of mine, alleviate production pressure.
In order to reduce and release threat of the mine gas to Safety of Coal Mine Production, caused using plant equipment and pipe special
Negative pressure, preservation or the gas of release in coal (rock) layer are released, ground or the way of other safety places is transported to, is called
Gas drainage under suction.
According to statistics, China's coal-mine every year by gas drainage under suction be drained into methane total amount in air 240 billion cubic meters with
On.Methane gas has very strong greenhouse effects, equivalent to 25 times of carbon dioxide.The aerial explosion limit of methane is
5%~16%.Coal mine gas divides high concentration gas and low concentration gas, and high concentration gas refers to watt that gas density is more than 30%
This, low concentration gas refers to the gas that gas density is less than 30%.The gas in China more than 60% is containing methane below 30%
Low concentration gas, by safety regulations in coal mine requirement, gas density cannot enter air accumulator storage below 30%, and major part is straight
Connect and idle discharge is put.On the one hand the direct discharge that coal mine light concentration draws out methane causes the huge waste of non-renewable resources, separately
On the one hand atmosphere pollution and greenhouse effects are also exacerbated.
Draw out methane realization collection and conveying to idle air and low concentration, and is eliminated originally by the oxidation processes to gas
The methane being discharged into air, it is allowed to be oxidized to carbon dioxide and water, so as to produce huge reduction of greenhouse gas discharge effect.Cause
This, how safely and effectively coal mine methane and low concentration to be drawn out methane to be acquired is particularly important with conveying.
The content of the invention
It is an object of the present invention in order to make full use of the idle air discharged in colliery and draw out methane, and avoid gas from arranging
Put the technical problem that environmental pollution is caused into air, there is provided a kind of coal mine methane and the blending processing system to draw out methane, should
Idle air in coal mine and draw out methane progress safe collection, blending and conveying can be heat-accumulating type high-temperature oxidation etc. by system
Later use project provides safe source of the gas, and the free of contamination carbon dioxide most generated at last after exhaustive oxidation is emitted into air
In environment.
To achieve the above object, the present invention provides a kind of coal mine methane and the blending processing system to draw out methane, the blending
Processing system includes：Idle air blower cover, idle air conveyance conduit, the connecting pipe that draws out methane, blender, mixed gas delivery pipe
Road, air-introduced machine and heat-accumulating type high-temperature oxidation unit；The idle air conveyance conduit connects with idle air blower cover so that idle air is due to negative
Pressure is drawn to idle air conveyance conduit；The exhaust outlet of the connecting pipe that draws out methane connects with idle air conveyance conduit so that takes out
Methane due in the connecting pipe that draws out methane negative pressure be sucked into idle air conveyance conduit, with the idle air flowed in idle air conveyance conduit
The blending of blended device uniformly to after the mixed gas with low-concentration methane, by mixed gas delivery pipeline to one or
Above heat-accumulating type high-temperature oxidation unit carries out oxidation processes；The coal mine methane and the negative pressure transportation power resources that draw out methane in
The air-introduced machine that heat-accumulating type high-temperature oxidation unit upstream is set, in idle air conveyance conduit and the connection that draws out methane when the air-introduced machine is run
Negative pressure is produced in pipeline.
After the idle air conveyance conduit described in entering that draws out methane, this, which draws out methane, is diluted rapidly and blended by idle air
It is even to be no more than LEL, preferably less than 1.5% to methane concentration so that gas density is pacified after being far below methane explosion limit
Full conveying.
As the further improvement of above-mentioned technical proposal, described blending processing system also includes：Draw out methane evacuated tube
With the blower cover that draws out methane；The lower port of the evacuated tube that draws out methane connects with coal mine ground extraction pumping plant；The extraction watt
This blower cover is the cover body structure of conducting, and the blower cover that draws out methane is arranged at the exit of the evacuated tube that draws out methane, and
With atmosphere；The side wall of the blower cover that draws out methane offers air inducing hole, the air inducing hole and the connecting tube that draws out methane
The air inlet in road is connected.
As the further improvement of above-mentioned technical proposal, explosion suppression device is provided with the connecting pipe that draws out methane, should
Explosion suppression device is exploded by being installed on draw out methane connecting pipe and the two groups of flame sensors on blower cover that draw out methane
Monitoring.
As the further improvement of above-mentioned technical proposal, described idle air conveyance conduit is close to idle air blower cover exhaust outlet
Side be provided with idle air wind regime regulating valve, the joint upstream of idle air conveyance conduit and the connecting pipe that draws out methane or be nearby provided with
Pressure sensor, the pressure sensor are adjusted by monitoring the gas pressure before being blended in idle air conveyance conduit to idle air wind regime
Valve carries out close-loop automatic adjustment so that constant negative pressure is produced in the connecting pipe that draws out methane, is realized in the evacuated tube pair that draws out methane
Under conditions of atmosphere opening, most gas are drawn out methane in connecting pipe in negative pressure extracting to idle air conveyance conduit.
As the further improvement of above-mentioned technical proposal, described mixed gas delivery pipeline is provided with the downstream of blender
Measuring instrument, the measuring instrument carry out closed loop VFC to air-introduced machine, realize mixed gas delivery pipeline by the monitor value of display
The control of interior gas flow.
As the further improvement of above-mentioned technical proposal, described mixed gas delivery pipeline is close to mixer outlet
Side is provided with methane concentration monitor, is continuously monitored on-line by methane concentration, is taken out to what the connecting pipe that draws out methane was provided with
Methane regulating valve carries out close-loop automatic adjustment, and methane concentration is no more than 1.5% after control blending.
As the further improvement of above-mentioned technical proposal, at least one blender is arranged at idle air conveyance conduit and extraction watt
The intersection downstream of this connecting pipe or near.Described blender is deflector, and described deflector is arranged at idle air conveying
Near the intersection of pipeline and the connecting pipe that draws out methane.
Or described blender selection be static mixing machine, described static mixing machine be arranged at idle air conveyance conduit with
Draw out methane connecting pipe intersection downstream, idle air is realized and is once blended with drawing out methane, static blending be set thereafter
With drawing out methane blending uniformly lamination does not occur for idle air after device ensures blending.Described blender also may be selected to be at least
The combination of one deflector and at least one static mixing machine, the blender is arranged at idle air conveyance conduit and the connection that draws out methane
The downstream of the intersection of pipeline or near, in addition, as at least one component in the combination, such as any one deflector or static state
Mixing machine may also set up the upstream of the intersection in idle air conveyance conduit and the connecting pipe that draws out methane.
As the further improvement of above-mentioned technical proposal, the connecting pipe that draws out methane extends to idle air conveyance conduit
It is interior, and the exhaust outlet of the tube wall of idle air conveyance conduit corresponding thereto and the connecting pipe that draws out methane respectively leaves distance.
As the further improvement of above-mentioned technical proposal, described mixed gas delivery pipeline is set in the downstream of blender
There is demisting dehydration device, conveyed in described demisting dehydration device by chevron-shaped arranged in parallel into several supply streams
Passage, for the gas after removing water droplet to be sent into heat-accumulating type high-temperature oxidation unit.Improve heat-accumulating type high-temperature oxidation unit heat
Efficiency.
As the further improvement of above-mentioned technical proposal, described mixed gas delivery pipeline is close to air-introduced machine entrance
Side is provided with isolating valve, and the isolating valve controls its switch, the laser type methane by the monitoring result of methane concentration monitor
Pipeline required distance between concentration monitoring device and isolating valve is more than gas in pipelines and reacted by 2 seconds of methane concentration monitor
The distance that the shut-in time is conveyed in time, isolating valve 2 seconds, to ensure when methane concentration monitor is detecting that methane concentration surpasses
After crossing default threshold value, preferably threshold value is set to exceed the 40% of LEL value, isolating valve emergency cut-off so that heat accumulating type
High-temperature oxidation device is thoroughly isolated with mixed gas delivery pipeline, ensures system safety.
As the further improvement of above-mentioned technical proposal, the mixed gas delivery pipeline is provided with tight in the upstream of isolating valve
Anxious evacuated tube, the upper port of described emergent evacuation pipe is directly and atmosphere, the emergent evacuation pipe are provided with exhaust-valve and row
Empty blower fan；After heat-accumulating type high-temperature oxidation unit is stopped transport, blower fan startup is opened and emptied by closed-loop control exhaust-valve, utilizes row
Negative pressure caused by empty blower fan is after idle air blower cover extracts idle air purging mixed gas delivery pipeline, the gas that will be remained in pipeline
Air, safeguards system safety are discharged into through emergent evacuation pipe." stoppage in transit of heat-accumulating type high-temperature oxidation unit " being related in full text of the present invention
Refer to have occurred each heat-accumulating type high-temperature oxidation unit respectively with mixed gas delivery pipeline or multichannel mixed gas delivery pipeline every
From, or there is a kind of circumstance or state of heat-accumulating type high-temperature oxidation unit shutdown.
As the further improvement of above-mentioned technical proposal, the friendship of described idle air conveyance conduit and the connecting pipe that draws out methane
Meeting point upstream is provided with air intake duct, and the air inlet of the air intake duct directly and atmosphere, is set on the air intake duct
There is pressure-regulating valve, after heat-accumulating type high-temperature oxidation unit is stopped transport, opened by closed-loop control pressure-regulating valve, put down using air
Weighing apparatus idle air conveyance conduit and the negative pressure to draw out methane in connecting pipe.
As the further improvement of above-mentioned technical proposal, the mixed gas delivery pipeline is provided with row in the upstream of isolating valve
Empty air inlet pipe, the air inlet of described emptying air inlet pipe directly and atmosphere, the emptying air inlet pipe be provided with emptying blower fan and
Intake valve；Described idle air conveyance conduit is provided with emergent evacuation pipe, and the emergent evacuation pipe is arranged at idle air conveyance conduit with taking out
The upstream of the joint of methane connecting pipe, the emergent evacuation pipe are provided with exhaust-valve；When heat-accumulating type high-temperature oxidation unit stops
After fortune, by closed-loop control exhaust-valve, inlet open and the startup for emptying blower fan, extracted using blower fan is emptied from air
After air purges mixed gas delivery pipeline and idle air conveyance conduit, the gas remained in pipeline is discharged into greatly through emergent evacuation pipe
Gas.
As the further improvement of above-mentioned technical proposal, the friendship of described idle air conveyance conduit and the connecting pipe that draws out methane
Meeting point upstream is provided with breather pipe, and the upper port of the breather pipe is directly and atmosphere, the breather pipe are provided with multifunction valve；Institute
The mixed gas delivery pipeline stated is provided with multichannel mixed gas delivery pipeline, on described multichannel mixed gas delivery pipeline simultaneously
Row connects several heat-accumulating type high-temperature oxidation units, and the end of the multichannel mixed gas delivery pipeline is provided with emptying air inlet pipe, institute
The one end for the emptying air inlet pipe stated is directly and atmosphere, the emptying air inlet pipe are provided with emptying blower fan and intake valve；Work as accumulation of heat
After formula high-temperature oxidation device is stopped transport, by closed-loop control multifunction valve, inlet open and the startup for emptying blower fan, row is utilized
Empty blower fan extracts air from air and purges multichannel mixed gas delivery pipeline, mixed gas delivery pipeline and idle air conveying successively
After pipeline, the gas remained in pipeline is discharged into air through breather pipe；Or after heat-accumulating type high-temperature oxidation unit is stopped transport, pass through
Closed-loop control inlet open and the startup for emptying blower fan, idle air is extracted from idle air blower cover using negative pressure caused by blower fan is emptied
After purging mixed gas delivery pipeline, the gas remained in pipeline is discharged into air through emptying air inlet pipe；Or when heat accumulating type height
After warm oxidation unit is stopped transport, the startup of blower fan is opened and emptied by closed-loop control intake valve, multifunction valve, is extracted from breather pipe
After air purges idle air conveyance conduit and mixed gas delivery pipeline, the gas remained in pipeline is discharged into greatly through emptying air inlet pipe
Gas.Gas can be discharged backward by the air exhauster that mixed gas delivery pipe end is provided with, and avoid gas from flowing back.
As the further improvement of above-mentioned technical proposal, after heat-accumulating type high-temperature oxidation unit is stopped transport, pass through closed-loop control
Multifunction valve utilizes atmospheric equilibrium idle air conveyance conduit and the pressure to draw out methane in connecting pipe after opening.
As the further improvement of above-mentioned technical proposal, described blending processing system also includes chimney, described chimney
By provided with clean gas conveyance conduit connected with heat-accumulating type high-temperature oxidation unit, for by heat-accumulating type high-temperature oxidation unit oxygen
Clean gas caused by change processing is discharged into air；Described clean gas conveyance conduit is provided with clean gas valve, clear for controlling
The opening and closing of clean gas transmission pipeline.
As the further improvement of above-mentioned technical proposal, described blending processing system also includes steam boiler, described
Steam boiler and chimney by provided with hot blast conveying pipe road connected with heat-accumulating type high-temperature oxidation unit, the steam boiler is used for
Absorb high-temperature hot-air caused by heat-accumulating type high-temperature oxidation unit and carry out heat energy utilization；Described hot blast conveying pipe road is provided with hot-blast valve
With hot blast by-passing valve, described hot-blast valve is used for the break-make for controlling hot blast conveying pipe road and steam boiler, described hot blast bypass
Valve is used for the break-make for controlling hot blast conveying pipe road and chimney.
As the further improvement of above-mentioned technical proposal, grading ring is provided with described air-introduced machine, described grading ring is used
Gas flow in measurement mixed gas delivery pipeline.
A kind of coal mine methane of the present invention and the blending processing system advantage to draw out methane are：
1st, blending processing system of the invention can be by the idle air in coal mine and the draw out methane safe collection of progress, blending
With conveying, safe source of the gas is provided for later use projects such as heat-accumulating type high-temperature oxidation and fuel combustion supportings, most at last after exhaustive oxidation
The free of contamination carbon dioxide of generation is emitted into atmospheric environment, is played a role in energy saving；
2nd, by idle air blower cover and the blower cover that draws out methane design to the permanent emptying of air, idle air and drawing out methane is being kept
Under natural emptying state, once the air-introduced machine of heat-accumulating type high-temperature oxidation unit porch is shut down, negative pressure disappears in idle air flue, weary
Wind and draw out methane will along original direction empty, there is no any influence to coal mine ventilation system and drainage system normal operation, protect
The safety of underground coal mine production is demonstrate,proved；
3rd, gas drainage under suction of the prior art, which needs to draw out methane by water ring pump output malleation, is delivered to blending point, from
And the running resistance and burden of water ring pump are added, and the present invention forms negative pressure actively due to air-introduced machine in idle air conveyance conduit
Collection draws out methane, thoroughly break away to coal mine ground extraction pumping plant gas water ring pump malleation conveying dependence, gather gas when can
Mitigate the running resistance of water ring pump, there is no any influence to pumping plant normal operation；
4th, the valve of each pipeline is closed using the monitoring result of pressure sensor and laser type methane concentration monitor
Ring controls, and so as to realize automatically controlling for gas flow, gas density and negative pressure, ensures that the gas gas density after blending is less than
LEL, preferably less than 1.5%, substitute is provided for the later use project such as regenerative apparatus high-temperature oxydation and fuel combustion supporting
Source.
Brief description of the drawings
Fig. 1 is a kind of coal mine methane in the embodiment of the present invention one and the blending processing system structural representation to draw out methane
Figure.
Fig. 2 is a kind of coal mine methane in the embodiment of the present invention two and the blending processing system structural representation to draw out methane
Figure.
Fig. 3 is a kind of coal mine methane in the embodiment of the present invention three and the blending processing system structural representation to draw out methane
Figure.
Fig. 4 is a kind of coal mine methane in the embodiment of the present invention four and the blending processing system structural representation to draw out methane
Figure.
Fig. 5 is a kind of coal mine methane in the embodiment of the present invention five and the blending processing system structural representation to draw out methane
Figure.
Fig. 6 is a kind of coal mine methane in the embodiment of the present invention six and the blending processing system structural representation to draw out methane
Figure.
Fig. 7 is the structural representation for the grading ring being arranged in the embodiment of the present invention six in air-introduced machine.
Fig. 8 is a kind of coal mine methane in the embodiment of the present invention seven and the blending processing system structural representation to draw out methane
Figure.
Fig. 9 is a kind of coal mine methane in the embodiment of the present invention eight and the blending processing system structural representation to draw out methane
Figure.
Figure 10 is that the abnormity shown in the embodiment of the present invention eight draws out methane between connecting pipe and idle air conveyance conduit
Annexation figure.
Figure 11 is that the first abnormity in the present invention draws out methane connecting pipeline structure schematic diagram.
Figure 12 is that second of abnormity in the present invention draws out methane connecting pipeline structure schematic diagram.
Figure 13 is that the third abnormity in the present invention draws out methane connecting pipeline structure schematic diagram.
Figure 14 a are that the 4th kind of abnormity in the present invention draws out methane connecting pipeline structure schematic diagram.
Figure 14 b are that the 4th kind of abnormity shown in Figure 14 a draws out methane the radial cross-section of connecting pipe.
Figure 15 a are that the 5th kind of abnormity in the present invention draws out methane connecting pipeline structure schematic diagram.
Figure 15 b are that the 5th kind of abnormity shown in Figure 15 a draws out methane the radial cross-section of connecting pipe.
Reference
1st, coal mine ground extraction pumping plant 2, draw out methane evacuated tube
3rd, draw out methane blower cover 4, draw out methane connecting pipe
5th, idle air retention tower 6, idle air blower cover
7a, idle air conveyance conduit 7b, mixed gas delivery pipeline
M, blender 8, deflector
9th, static mixing machine 10, demisting dehydration device
11st, air-introduced machine 12, heat-accumulating type high-temperature oxidation unit
13rd, explosion suppression device 14, flame sensor
15th, the regulating valve that draws out methane 16, idle air wind regime regulating valve
17th, pressure sensor 18, measuring instrument
19th, methane concentration monitor 20, isolating valve
21st, exhaust-valve 22, emptying blower fan
23rd, emergent evacuation pipe 23b, emptying air inlet pipe
24th, intake valve 25, multichannel mixed gas delivery pipeline
26th, clean gas conveyance conduit 27, chimney
28th, clean gas valve 29, hot-blast valve
30th, hot blast conveying pipe road 31, steam boiler
32nd, hot air boiler by-passing valve 33, temperature sensor
34th, pressure-regulating valve 35, air intake duct
36th, grading ring 37, breather pipe
38th, multifunction valve 39, steam turbine
40th, generator 41, cooling device
42nd, feed pump 4*, abnormity draw out methane connecting pipe
8*, special-shaped deflector
Embodiment
With reference to the accompanying drawings and examples to a kind of coal mine methane of the present invention and the blending processing system to draw out methane
System is described in detail.
Embodiment one
As shown in figure 1, the blending processing system to draw out methane for a kind of coal mine methane and low concentration of the invention, the blending
Processing system includes：Idle air blower cover 6, idle air conveyance conduit 7a, the connecting pipe 4 that draws out methane, blender M, mixed gas are defeated
Send pipeline 7b, air-introduced machine 11 and heat-accumulating type high-temperature oxidation unit 12；The idle air conveyance conduit 7a connects with idle air blower cover 6,
So that idle air is due in negative pressure absorbing to idle air conveyance conduit 7a；The exhaust outlet and idle air of the connecting pipe 4 that draws out methane are defeated
Pipeline 7a is sent to connect so as to draw out methane and inputted from the connecting pipe 4 that draws out methane to idle air conveyance conduit 7a, with idle air delivery pipe
The blended device M of idle air of flowing is well mixed in road 7a be less than 1.5% (preferred value 1.2%) to volume percent methane after,
One or more heat-accumulating type high-temperature oxidation unit 12 is delivered to by mixed gas delivery pipeline 7b and carries out oxidation processes.It is described to take out
The air-introduced machine 11 that the conveying power resources of methane and idle air are provided with the upstream of heat-accumulating type high-temperature oxidation unit 12, the air-introduced machine 11
During operation negative pressure is produced in the connecting pipe 4 that draws out methane, mixed gas delivery pipeline 7b and idle air conveyance conduit 7a.It is described mixed
Gas transmission pipeline 7b air inlet connection idle air conveyance conduit 7a is closed, and an at least air-introduced machine 11 is provided with pipeline.
The low concentration draws out methane after the idle air conveyance conduit 7a described in entering, and the low concentration draws out methane fast by idle air
Speed dilutes and blended uniformly so that methane concentration is less than default numerical value, far below methane explosion limit.Described blender M
It is by professional Field Flow Numerical Simulation particular design.
Blending processing system based on said structure, as shown in figure 1, in the present embodiment, the blending processing system may be used also
Including：Coal bed methane extraction evacuated tube 2 and the blower cover 3 that draws out methane；The evacuated tube 2 that draws out methane is the cylinder turned on up and down
Structure, its lower port connect with coal mine ground extraction pumping plant 1；The blower cover 3 that draws out methane is the cover body structure turned on up and down,
The upper port of the blower cover 3 that draws out methane directly and atmosphere, the upper port of its lower port and the evacuated tube 2 that draws out methane
Connection, the side wall for drawing out methane blower cover 3 offer air inducing hole, the air inducing hole and the connecting pipe 4 that draws out methane
Air inlet is connected.
Explosion suppression device 13 is provided with the connecting pipe 4 that draws out methane, the explosion suppression device 13 is by being installed on extraction watt
This connecting pipe 4 and the two groups of flame sensors 14 to draw out methane on blower cover 3 carry out blast monitoring.One of which flame senses
Device can be arranged on to be less than in the range of 5 meters away from the upper port of blower cover 3 that draws out methane；Another group of flame sensor can be arranged on apart from weary
Wind conveyance conduit 7a is less than in the range of 2 meters, is not more than apart from explosion suppression device in the range of 20 meters；Before once flame sensor detects
Side's blast, explosion suppression device can start immediately, by explosion suppression, and separate detonation propagation, system overall response time<12ms.The suppression
Quick-fried device 13 can use carbon dioxide active explosion suppression device.
Described blender M can be designed as static mixing machine 9, may be designed in deflector 8；And in the present embodiment
In, blender M is the combination of static mixing machine 9 and deflector 8, and described deflector 8 is arranged at idle air conveyance conduit 7a and taken out
Near the intersection of methane connecting pipe 4.Described static mixing machine 9 is arranged at idle air conveyance conduit 7a and the company that draws out methane
The downstream of the intersection in adapter road 4.Described mixed gas delivery pipeline 7b is provided with demisting in the downstream of static mixing machine 9 and taken off
Water installations 10, described demisting dehydration device 10 is interior to flow the logical of conveying by chevron-shaped arranged in parallel into several supply
Road so that air-flow beats drop heavier in gas in plate face after being contacted with plate face, and re-uniting into can be along ripple after big water droplet
Card flows out pipeline from discharging tube, and the dry gas after removing water droplet is sent into heat-accumulating type high-temperature oxidation unit 12, improves
The thermal efficiency of heat-accumulating type high-temperature oxidation unit 12.Because described demisting dehydration device 10 only carries out dewater treatment by corrugated plating,
The use of conductive material avoids Ignition sources caused by electrostatic charging.
It is using above-mentioned coal mine methane and the blending processing system to draw out methane, the operation principle for carrying out gas drawing station：
First, drawing out methane for coal mine ground extraction pumping plant 1 draws out methane because gas water ring pump discharge malleation is delivered to
In evacuated tube 2, and enter the blower cover 3 that draws out methane.When heat-accumulating type high-temperature oxidation unit 12 is stopped transport, idle air conveyance conduit 7a and
It is malleation to draw out methane in connecting pipe 4, and gas acquisition rate is 0%, with the gas that draws out methane in the linkage section of evacuated tube 2 due to
Jet action, it can reversely flow into and draw out methane in blower cover 3, effectively avoid gas leakage from being taken out in idle air conveyance conduit 7a
Methane is emitted among air by the upper port of blower cover 3 (diffusing opening) that draws out methane, while the idle air in idle air retention tower 5
It can be emitted into through the idle air blower cover 6 that its upper end is provided among air；And when heat-accumulating type high-temperature oxidation unit 12 is run, rely on
The driving of the air-introduced machine 11 of installation in mixed gas delivery pipeline 7b, the idle air in idle air retention tower 5 are negative also by air-introduced machine 11
In pressure suction idle air conveyance conduit 7a, existing powerful negative pressure causes the cover body of blower cover 3 that draws out methane in idle air conveyance conduit 7a
Negative pressure is produced at the air inducing hole of side wall, will draw out methane to be attracted to draws out methane in connecting pipe 4, travels further into idle air conveying
Drawing out methane in pipeline 7a below 1.5%, passes through deflector 8 and static mixing machine 9 with idle air mixed diluting to methane concentration
Blending is uniform twice, and being delivered to heat-accumulating type high-temperature oxidation unit 12 after demisting dehydration device 10 removes drop is carried out at oxidation
Reason, final product carbon dioxide and water are emitted into atmospheric environment.
In addition, as shown in figure 1, described idle air conveyance conduit 7a is provided with close to the side of the exhaust outlet of idle air blower cover 6
The joint upstream of idle air wind regime regulating valve 16, idle air conveyance conduit 7a and the connecting pipe 4 that draws out methane nearby is provided with pressure
Sensor 17, the pressure sensor 17 are adjusted by monitoring the gas pressure before being blended in idle air conveyance conduit 7a to idle air wind regime
Save valve 16 and carry out close-loop automatic adjustment so that constant negative pressure is produced in the connecting pipe 4 that draws out methane, is realized in the emptying that draws out methane
Under conditions of pipe 2 is to atmosphere opening, most gas, which are drawn into, to draw out methane in connecting pipe 4.
Described mixed gas delivery pipeline 7b is provided with measuring instrument 18, described measuring instrument in the downstream of static mixing machine 9
18 can use flowmeter or pressure sensor, and the measuring instrument 18 is by monitoring the gas after being blended in mixed gas delivery pipeline 7b
Pressure, closed loop VFC is carried out to air-introduced machine 11, realizes the control of gas flow in idle air conveyance conduit.
Described mixed gas delivery pipeline 7b is provided with methane concentration monitor 19 in the downstream of static mixing machine 9, passes through
Methane concentration is continuously monitored on-line, and it is automatic that the regulating valve 15 that draws out methane being provided with to the connecting pipe 4 that draws out methane carries out closed loop
Regulation, realize the control of blending after gas concentration, it is ensured that the idle air concentration after blending is no more than 1.5%.
Described methane concentration monitor 19 being capable of fast reaction, preferably infrared type methane monitor.
Described deflector 8 may be disposed near the intersection of idle air conveyance conduit 7a and the connecting pipe 4 that draws out methane, real
Existing pre-blended.Thereafter certain distance sets static mixing machine 9 to ensure that the blending that draws out methane of idle air and low concentration is uniform, does not occur point
Layer phenomenon.
Described mixed gas delivery pipeline 7b is being provided with isolating valve 20, the isolating valve close to the side of the entrance of air-introduced machine 11
20 control its switch by the monitoring result of methane concentration monitor 19.
Pipeline required distance between the methane concentration monitor 19 and isolating valve 20 is more than the distance of gas conveying, should
The distance of conveying meets that requirement is：Gas in pipelines is closed in 2 seconds by 2 second reaction time of methane concentration monitor, isolating valve
Close the distance that the time conveyed；To ensure after methane concentration monitor 19 detects methane concentration more than 1.8%, heat accumulating type is high
The isolating valve 20 that warm oxidation unit porch is set can ensure system safety with emergency cut-off.
Described mixed gas delivery pipeline 7b is provided with emergent evacuation pipe 23 in the upstream of isolating valve 20.Described urgent row
The upper port of blank pipe 23 is directly and atmosphere, the emergent evacuation pipe 23 are provided with exhaust-valve 21 and emptying blower fan 22.Work as accumulation of heat
After formula high-temperature oxidation device 12 is stopped transport, valve 21 is emptied by closed-loop control and opens and empties blower fan 22 and start, using emptying wind
Negative pressure caused by machine 22 is after idle air blower cover 6 extracts idle air purging idle air feed track 7, by residual watt in idle air conveyance conduit 7
This is discharged into air through emergent evacuation pipe 23, effectively avoids potential safety hazard caused by the gas of residual in idle air conveyance conduit 7, protects
Barrier system safety.
Embodiment two
As shown in Fig. 2 the blending processing system to draw out methane for a kind of coal mine methane and low concentration of the invention, the blending
Processing system includes：Idle air blower cover 6, idle air conveyance conduit 7a, draw out methane connecting pipe 4, blender, mixed gas delivery
Pipeline 7b, air-introduced machine 11 and heat-accumulating type high-temperature oxidation unit 12.It is with the difference of embodiment one：Also include chimney 27 and steam
Boiler furnace 31, described chimney 27 by provided with clean gas conveyance conduit 26 connected with heat-accumulating type high-temperature oxidation unit 12,
For clean gas caused by the oxidation processes of heat-accumulating type high-temperature oxidation unit 12 to be discharged into air；Described clean gas delivery pipe
Road 26 is provided with clean gas valve 28, for controlling the opening and closing of clean gas conveyance conduit 26.Described steam boiler 31 and chimney
27 by provided with hot blast conveying pipe road 30 connected with heat-accumulating type high-temperature oxidation unit 12, the steam boiler 31 be used for absorb store
High-temperature hot-air caused by hot type high-temperature oxidation device 12 carries out heat energy utilization；Described hot blast conveying pipe road 30 is provided with hot-blast valve 29
With hot blast by-passing valve 32, described hot-blast valve 29 is used for the break-make for controlling hot blast conveying pipe road 30 and steam boiler 31, described
Hot blast by-passing valve 32 is used for the break-make for controlling hot blast conveying pipe road 30 and chimney 27.
The more waste heat energies being converted into after being inputted by methane to heat-accumulating type high-temperature oxidation unit 12 are with more than 800 degrees Celsius
Hot blast form is delivered in steam boiler 31.The release of the energy is generally installed on heat-accumulating type high-temperature oxidation unit 12 by one and fired
Indoor temperature sensor 33, hot-blast valve 29 and hot blast by-passing valve 32 is burnt to be monitored.Now if steam boiler 31 does not connect
It is connected to system, or steam boiler 31 is not actuated, hot blast will be directly inputted into clean gas from bypass by hot blast by-passing valve 32
Conveyance conduit 26.
In addition, in the present embodiment, described blender is designed as static mixing machine 9, described static mixing machine 9 is set
In idle air conveyance conduit 7a and the downstream of the intersection for the connecting pipe 4 that draws out methane.And it is not provided with the He of idle air wind regime regulating valve 16
The pressure sensor 17 coordinated with it.
Embodiment three
As shown in figure 3, the blending processing system to draw out methane for a kind of coal mine methane and low concentration of the invention, the blending
Processing system includes：Idle air blower cover 6, idle air conveyance conduit 7a, draw out methane connecting pipe 4, blender, mixed gas delivery
Pipeline 7b, air-introduced machine 11 and heat-accumulating type high-temperature oxidation unit.It is with the difference of embodiment one：Comprising multiple in the present embodiment
Heat-accumulating type high-temperature oxidation unit (12a, 12b ... 12x shown in figure), described mixed gas delivery pipeline 7b are provided with multichannel
Mixed gas delivery pipeline 25, the oxidation of several heat-accumulating type high-temperatures is connected on described multichannel mixed gas delivery pipeline 25 parallel
Device, isolating valve (20a, 20b ... 20x shown in figure) and air inducing are equipped with the upstream of each heat-accumulating type high-temperature oxidation unit
Machine (11a, 11b ... 11x shown in figure).All heat-accumulating type high-temperature oxidation units are controlled by corresponding isolating valve, are kept
Run or keep simultaneously one or more devices to close.
Each heat-accumulating type high-temperature oxidation unit by provided with clean gas conveyance conduit (26a shown in figure,
26b ... 26x) its caused clean gas is discharged into air, and by provided with hot blast conveying pipe road (30a shown in figure,
30b ... 30x) its caused high-temperature hot-air output is subjected to heat energy utilization.
Example IV
As shown in figure 4, the blending processing system to draw out methane for a kind of coal mine methane and low concentration of the invention, the blending
Processing system includes：Idle air blower cover 6, idle air conveyance conduit 7a, draw out methane connecting pipe 4, blender, mixed gas delivery
Pipeline 7b, air-introduced machine 11 and heat-accumulating type high-temperature oxidation unit 12.It is with the difference of embodiment one：Also include chimney 27.Institute
The chimney 27 stated by provided with clean gas conveyance conduit 26 connected with heat-accumulating type high-temperature oxidation unit 12, for by heat accumulating type
Clean gas caused by the oxidation processes of high-temperature oxidation device 12 is discharged into air；Described clean gas conveyance conduit 26 is provided with cleaning
Gas trap 28, for controlling the opening and closing of clean gas conveyance conduit 26.
In addition, the mixed gas delivery pipeline 7b is provided with emptying air inlet pipe 23b, described row in the upstream of isolating valve 20
Empty air inlet pipe 23b air inlet is directly and atmosphere, emptying air inlet pipe 23b are provided with emptying blower fan 22a and intake valve 24；
Described idle air conveyance conduit 7a is provided with emergent evacuation pipe 23a, the emergent evacuation pipe 23a be arranged at idle air conveyance conduit 7a with
Draw out methane connecting pipe 4 joint upstream, emergent evacuation pipe 23a is provided with exhaust-valve 21a；When heat-accumulating type high-temperature oxygen
After 12 stoppages in transit are put in makeup, blower fan 22a startup is opened and emptied by closed-loop control exhaust-valve 21a, intake valve 24, utilizes row
Empty blower fan 22a extracts air from air, and purges mixed gas delivery pipeline 7b and weary along direction A opposite normal flow direction B
After wind conveyance conduit 7a, the gas remained in pipeline is discharged into air through emergent evacuation pipe 23a, to ensure the peace of whole system
Entirely.
Embodiment five
As shown in figure 5, the blending processing system to draw out methane for a kind of coal mine methane and low concentration of the invention, the blending
Processing system includes：Idle air blower cover 6, idle air conveyance conduit 7a, draw out methane connecting pipe 4, blender, mixed gas delivery
Pipeline 7b, air-introduced machine 11 and heat-accumulating type high-temperature oxidation unit 12.It is with the difference of embodiment one：Also include chimney 27.Institute
The chimney 27 stated by provided with clean gas conveyance conduit 26 connected with heat-accumulating type high-temperature oxidation unit 12, for by heat accumulating type
Clean gas caused by the oxidation processes of high-temperature oxidation device 12 is discharged into air；Described clean gas conveyance conduit 26 is provided with cleaning
Gas trap 28, for controlling the opening and closing of clean gas conveyance conduit 26.
In addition, the joint upstream of described idle air conveyance conduit 7a and the connecting pipe 4 that draws out methane is provided with air inlet
Pipe 35, the air inlet of the air intake duct 35 is directly and atmosphere, the air intake duct 35 are provided with pressure-regulating valve 34,
After heat-accumulating type high-temperature oxidation unit 12 is stopped transport, opened by closed-loop control pressure-regulating valve 34, it is defeated using atmospheric equilibrium idle air
Send pipeline 7a and the negative pressure to draw out methane in connecting pipe 4 so that be in idle air conveyance conduit 7a and the connecting pipe 4 that draws out methane
Malleation.Even if the regulating valve that now draws out methane 15 is not turned off, but due to jet action, remains to make to draw out methane to flow with direction B
In pumpback methane blower cover 3, gas leakage is effectively avoided in idle air conveyance conduit 7a, so as to add the peace of whole system
Entirely.
Embodiment six
As shown in fig. 6, the blending processing system to draw out methane for a kind of coal mine methane and low concentration of the invention, the blending
Processing system includes：Idle air blower cover 6, idle air conveyance conduit 7a, draw out methane connecting pipe 4, blender, mixed gas delivery
Pipeline 7b, air-introduced machine 11 and heat-accumulating type high-temperature oxidation unit.It is with the difference of embodiment one：Set in described air-introduced machine 11
There is grading ring 36, described grading ring 36 is used to measure gas flow.As shown in fig. 7, the flow can be by measuring air-introduced machine 11
The pressure drop of circular cone air inlet calculate, and by carrying out closed loop VFC to air-introduced machine 11, realize in idle air conveyance conduit
The control of gas flow.
Embodiment seven
As shown in figure 8, the blending processing system to draw out methane for a kind of coal mine methane and low concentration of the invention, the blending
Processing system includes：Idle air blower cover 6, idle air conveyance conduit 7a, draw out methane connecting pipe 4, blender, mixed gas delivery
Pipeline 7b, air-introduced machine 11 and heat-accumulating type high-temperature oxidation unit.It is with the difference of embodiment one：Comprising multiple in the present embodiment
Heat-accumulating type high-temperature oxidation unit (12a, 12b ... 12x shown in figure), described mixed gas delivery pipeline 7b are provided with multichannel
Mixed gas delivery pipeline 25, the oxidation of several heat-accumulating type high-temperatures is connected on described multichannel mixed gas delivery pipeline 25 parallel
Device, isolating valve (20a, 20b ... 20x shown in figure) and air inducing are equipped with the upstream of each heat-accumulating type high-temperature oxidation unit
Machine (11a, 11b ... 11x shown in figure).All heat-accumulating type high-temperature oxidation units are controlled by corresponding isolating valve, are kept
Run or keep simultaneously one or more devices to close.
Each heat-accumulating type high-temperature oxidation unit by provided with clean gas conveyance conduit (26a shown in figure,
26b ... 26x) its caused clean gas be delivered to after chimney 27 be discharged into air, and by provided with hot blast conveying pipe road
After its caused high-temperature hot-air is delivered to hot air boiler 31 by (30a, 30b ... 30x shown in figure), the steam boiler 31 is utilized
Absorb high-temperature hot-air caused by heat-accumulating type high-temperature oxidation unit and carry out heat energy utilization；
Each clean gas conveyance conduit (26a, 26b ... 26x) be equipped with clean gas valve (28a shown in figure,
28b ... 28x), for controlling the opening and closing of corresponding clean gas conveyance conduit.Each hot blast conveying pipe road (30a, 30b ... 30x)
Hot-blast valve (29a, 29b ... 29x shown in figure) and hot blast by-passing valve (32a, 32b ... 32x shown in figure) are equipped with, it is described
Hot-blast valve be used to controlling corresponding to hot blast conveying pipe road and steam boiler 31 break-make, described hot blast by-passing valve is used to control
The break-make in corresponding hot blast conveying pipe road.Temperature sensor is equipped with (in figure in each heat-accumulating type high-temperature oxidation unit combustion chamber
Shown 33a, 33b ... 33x), for monitoring the energy temperature of its release.
In addition, the joint upstream of described idle air conveyance conduit 7a and the connecting pipe 4 that draws out methane is provided with breather pipe 37,
The upper port of the breather pipe 37 is directly and atmosphere, the breather pipe 37 are provided with multifunction valve 38；Described mixed gas
Conveyance conduit 7b is provided with multichannel mixed gas delivery pipeline 25, is connected parallel on described multichannel mixed gas delivery pipeline 25
Several heat-accumulating type high-temperature oxidation units 12, the end of the multichannel mixed gas delivery pipeline 25 are provided with emptying air inlet pipe 23b, institute
The emptying air inlet pipe 23b stated one end is directly and atmosphere, emptying air inlet pipe 23b are provided with emptying blower fan 22a and air inlet
Valve 24；
After heat-accumulating type high-temperature oxidation unit 12 is stopped transport, opened by closed-loop control multifunction valve 38, intake valve 24 and
Blower fan 22a startup is emptied, multichannel mixed gas delivery pipeline is purged successively using emptying blower fan 22a and extracting air from air
25th, after mixed gas delivery pipeline 7b and idle air conveyance conduit 7a, the gas remained in pipeline is discharged into air through breather pipe 37；
Or after heat-accumulating type high-temperature oxidation unit 12 is stopped transport, multifunction valve 38 is conveyed after opening using atmospheric equilibrium idle air
Pipeline 7a and the pressure to draw out methane in connecting pipe 4.Even if the regulating valve that now draws out methane 15 is not turned off, but due to jet
Effect, is remained to make to draw out methane to be flowed back to direction B to draw out methane in blower cover 3, effectively avoids gas leakage to idle air delivery pipe
In road 7a, so as to add the safety of whole system.
Embodiment eight
As shown in figure 9, the blending processing system to draw out methane for a kind of coal mine methane and low concentration of the invention, the blending
Processing system includes：Idle air blower cover 6, idle air conveyance conduit 7a, the connecting pipe that draws out methane, blender, mixed gas delivery
Pipeline 7b, air-introduced machine 11 and heat-accumulating type high-temperature oxidation unit 12.It is with the difference of embodiment one：Also include chimney 27 and steam
Boiler furnace 31, described chimney 27 by provided with clean gas conveyance conduit 26 connected with heat-accumulating type high-temperature oxidation unit 12,
For clean gas caused by the oxidation processes of heat-accumulating type high-temperature oxidation unit 12 to be discharged into air；Described clean gas delivery pipe
Road 26 is provided with clean gas valve 28, for controlling the opening and closing of clean gas conveyance conduit 26.Described steam boiler 31 and chimney
27 by provided with hot blast conveying pipe road 30 connected with heat-accumulating type high-temperature oxidation unit 12, the steam boiler 31 be used for absorb store
High-temperature hot-air caused by hot type high-temperature oxidation device 12 carries out heat energy utilization；Described hot blast conveying pipe road 30 is provided with hot-blast valve 29
With hot blast by-passing valve 32, described hot-blast valve 29 is used for the break-make for controlling hot blast conveying pipe road 30 and steam boiler 31, described
Hot blast by-passing valve 32 is used for the break-make for controlling hot blast conveying pipe road 30 and chimney 27.
The more waste heat energies being converted into after being inputted by methane to heat-accumulating type high-temperature oxidation unit 12 are with more than 800 degrees Celsius
Hot blast form, which is delivered in steam boiler 31, carries out heat exchange generation overheated steam, and pushing turbine 39 drives while rotation
The output electric energy of generator 40, after turbine discharge is condensed into condensate into cooling device 41, steam is transmitted back to by feed pump 42
Recycled in boiler 31.
In addition, in the present embodiment, described blender is designed as static mixing machine 9 and special-shaped deflector 8* combination,
Described static mixing machine 9 is arranged at the downstream of the intersection of idle air conveyance conduit 7a and the connecting pipe that draws out methane, described to take out
Methane connecting pipe is that abnormity draws out methane connecting pipe 4*.As shown in Figure 10, the abnormity connecting pipe 4* that draws out methane prolongs
Extend in idle air conveyance conduit 7a, and the row of the tube wall of idle air conveyance conduit 7a corresponding thereto and the connecting pipe 4 that draws out methane
Gas port respectively leaves distance, and described special-shaped deflector 8* is fixed on the special-shaped connecting pipe 4* that draws out methane one end.
As shown in figure 11, the described abnormity connecting pipe 4* that draws out methane may be designed as rectangular parallelepiped structure, described abnormity
The deflector 8* connecting pipe 4* designs that can draw out methane with abnormity are structure as a whole, and make special-shaped deflector 8* from special-shaped extraction watt
This connecting pipe 4* one side extends exhaust outlet；As shown in Figure 12,13, described special-shaped deflector 8* can also be from special-shaped extraction
Extend exhaust outlet in gas connecting pipe 4* two sides.
As shown in Figure 14 a, 14b, the described abnormity connecting pipe 4* that draws out methane may be designed as cylindrical structural, described
Special-shaped deflector 8* can be tangentially secured to its exhaust ports along the special-shaped connecting pipe 4* that draw out methane outer wall；Such as Figure 15 a, 15b
Shown, the described special-shaped deflector 8* connecting pipe 4* designs that can also draw out methane with abnormity are structure as a whole, and lead abnormity
Flowing plate 8* from the special-shaped connecting pipe 4* that draws out methane a cambered surface extend exhaust outlet.
It should be noted last that the above embodiments are merely illustrative of the technical solutions of the present invention and it is unrestricted.Although ginseng
The present invention is described in detail according to embodiment, it will be understood by those within the art that, to the technical side of the present invention
Case is modified or equivalent substitution, and without departure from the spirit and scope of technical solution of the present invention, it all should cover in the present invention
Right among.
Claims (16)
1. a kind of coal mine methane and the blending processing system to draw out methane, it is characterised in that the blending processing system includes：Idle air
Blower cover (6), idle air conveyance conduit (7a), the connecting pipe that draws out methane (4), blender (M), mixed gas delivery pipeline
(7b), air-introduced machine (11) and heat-accumulating type high-temperature oxidation unit (12)；The idle air conveyance conduit (7a) connects with idle air blower cover (6)
It is logical so that idle air is due in negative pressure absorbing to idle air conveyance conduit (7a)；The exhaust outlet of the connecting pipe that draws out methane (4) with
Idle air conveyance conduit (7a) connects so that draws out methane because the connecting pipe that draws out methane (4) interior negative pressure is sucked into idle air conveying
Pipeline (7a), the blended device of idle air (M) blending with flowing in idle air conveyance conduit (7a) uniformly extremely have low-concentration methane
After mixed gas, one or more heat-accumulating type high-temperature oxidation unit (12) is delivered to by mixed gas delivery pipeline (7b) and carried out
Oxidation processes；The coal mine methane and the negative pressure transportation power resources that draw out methane are in heat-accumulating type high-temperature oxidation unit (12) upstream
The air-introduced machine (11) of setting；Described blender (M) is the combination of deflector (8) and static mixing machine (9), described deflector
(8) it is arranged near the intersection of idle air conveyance conduit (7a) and the connecting pipe that draws out methane (4)；Described static mixing machine
(9) it is arranged at the downstream of the intersection of idle air conveyance conduit (7a) and the connecting pipe that draws out methane (4)；
The connecting pipe that draws out methane (4) is extended in idle air conveyance conduit (7a), and idle air conveyance conduit corresponding thereto
The exhaust outlet of the tube wall of (7a) and the connecting pipe (4) that draws out methane respectively leaves distance.
2. coal mine methane according to claim 1 and the blending processing system to draw out methane, it is characterised in that described mixes
Mixed processing system also includes：The evacuated tube that draws out methane (2) and the blower cover that draws out methane (3)；The evacuated tube that draws out methane (2)
Lower port connects with coal mine ground extraction pumping plant (1)；The blower cover that draws out methane (3) for conducting cover body structure, the extraction
Gas blower cover (3) is arranged at the exit of evacuated tube (2) that draw out methane, and and atmosphere；It is described draw out methane draw
The side wall of fan housing (3) offers air inducing hole, and the air inducing hole is connected with the air inlet of the connecting pipe that draws out methane (4).
3. coal mine methane according to claim 2 and the blending processing system to draw out methane, it is characterised in that the extraction
Explosion suppression device (13) is provided with gas connecting pipe (4), the explosion suppression device (13) is by being installed on the connecting pipe that draws out methane
(4) two groups of flame sensors (14) and on the blower cover that draws out methane (3) carry out blast monitoring.
4. coal mine methane according to claim 1 and the blending processing system to draw out methane, it is characterised in that described is weary
Wind conveyance conduit (7a) is being provided with idle air wind regime regulating valve (16), idle air conveying close to the side of idle air blower cover (6) exhaust outlet
Pipeline (7a) and draw out methane connecting pipe (4) joint upstream or be nearby provided with pressure sensor (17), the pressure sensing
Device (17) carries out closed loop by monitoring the gas pressure before being blended in idle air conveyance conduit (7a), to idle air wind regime regulating valve (16)
Automatically adjust.
5. coal mine methane according to claim 1 and the blending processing system to draw out methane, it is characterised in that described is mixed
Close gas transmission pipeline (7b) and be provided with measuring instrument (18), the monitoring that the measuring instrument (18) passes through display in the downstream of blender (M)
Value, closed loop VFC is carried out to air-introduced machine (11), realizes the control of mixed gas delivery pipeline (7b) interior gas flow.
6. coal mine methane according to claim 1 and the blending processing system to draw out methane, it is characterised in that described is mixed
Close gas transmission pipeline (7b) and be provided with methane concentration monitor (19) close to the side of blender (M) outlet, it is dense by methane
The continuous on-line monitoring of degree, the regulating valve that draws out methane (15) being provided with to the connecting pipe that draws out methane (4) carry out closed loop and adjusted automatically
Section.
7. coal mine methane according to claim 1 and the blending processing system to draw out methane, it is characterised in that described is mixed
Close gas transmission pipeline (7b) and demisting dehydration device (10), described demisting dehydration device are provided with the downstream of blender (M)
(10) passage of conveying is flowed in into several supply by chevron-shaped arranged in parallel, for the gas after removing water droplet to be sent
Enter in heat-accumulating type high-temperature oxidation unit (12).
8. coal mine methane according to claim 6 and the blending processing system to draw out methane, it is characterised in that described is mixed
Close gas transmission pipeline (7b) and be provided with isolating valve (20) in the side close to air-introduced machine (11) entrance, the isolating valve (20) passes through first
The monitoring result of alkane concentration monitoring device (19) controls its switch, surpasses when methane concentration monitor (19) monitors volume percent methane
When crossing default threshold value, isolating valve (20) quick closedown so that heat-accumulating type high-temperature oxidation unit (12) and mixed gas delivery pipe
Road (7b) thoroughly isolates.
9. coal mine methane according to claim 8 and the blending processing system to draw out methane, it is characterised in that described is weary
The joint upstream of wind conveyance conduit (7a) and the connecting pipe (4) that draws out methane is provided with air intake duct (35), and the air enters
The air inlet of tracheae (35) is directly provided with pressure-regulating valve (34), works as heat accumulating type with atmosphere, the air intake duct (35)
After high-temperature oxidation device (12) is stopped transport, opened by closed-loop control pressure-regulating valve (34), utilize atmospheric equilibrium idle air delivery pipe
Road (7a) and the negative pressure to draw out methane in connecting pipe (4).
10. coal mine methane according to claim 8 and the blending processing system to draw out methane, it is characterised in that described mixed
Close gas transmission pipeline (7b) and be provided with emergent evacuation pipe (23) in the upstream of isolating valve (20), described emergent evacuation pipe (23)
Upper port is directly and atmosphere, the emergent evacuation pipe (23) are provided with exhaust-valve (21) and emptying blower fan (22)；Work as heat accumulating type
After high-temperature oxidation device (12) is stopped transport, blower fan (22) is opened and emptied by closed-loop control exhaust-valve (21) and is started, utilizes emptying
Negative pressure caused by blower fan (22) is after idle air blower cover (6) extracts idle air purging mixed gas delivery pipeline (7b), by pipeline
The gas of residual is discharged into air through emergent evacuation pipe (23).
11. coal mine methane according to claim 8 and the blending processing system to draw out methane, it is characterised in that described mixed
Close gas transmission pipeline (7b) and be provided with emptying air inlet pipe (23b), described emptying air inlet pipe (23b) in the upstream of isolating valve (20)
Air inlet directly and atmosphere, the emptying air inlet pipe (23b) is provided with emptying blower fan (22a) and intake valve (24)；It is described
Idle air conveyance conduit (7a) be provided with emergent evacuation pipe (23a), the emergent evacuation pipe (23a) is arranged at idle air conveyance conduit
The upstream of the joint of (7a) and the connecting pipe (4) that draws out methane, the emergent evacuation pipe (23a) are provided with exhaust-valve (21a)；When
After heat-accumulating type high-temperature oxidation unit (12) is stopped transport, wind is opened and emptied by closed-loop control exhaust-valve (21a), intake valve (24)
The startup of machine (22a), air purging mixed gas delivery pipeline (7b) and idle air are extracted from air using blower fan (22a) is emptied
After conveyance conduit (7a), the gas remained in pipeline is discharged into air through emergent evacuation pipe (23a).
12. coal mine methane according to claim 1 and the blending processing system to draw out methane, it is characterised in that described
The joint upstream of idle air conveyance conduit (7a) and the connecting pipe (4) that draws out methane is provided with breather pipe (37), the breather pipe
(37) upper port is directly and atmosphere, the breather pipe (37) are provided with multifunction valve (38)；The mixed gas delivery pipe
The end in road (7b) is provided with emptying air inlet pipe (23b), and one end of described emptying air inlet pipe (23b) directly and atmosphere, should
Empty air inlet pipe (23b) and be provided with emptying blower fan (22a) and intake valve (24)；
After heat-accumulating type high-temperature oxidation unit (12) is stopped transport, by closed-loop control multifunction valve (38), intake valve (24) open with
And the startup of emptying blower fan (22a), mixed gas delivery pipe is purged successively using emptying blower fan (22a) and extracting air from air
Behind road (7b) and idle air conveyance conduit (7a), the gas remained in pipeline is discharged into air through breather pipe (37)；Or
After heat-accumulating type high-temperature oxidation unit (12) is stopped transport, blower fan (22a) is opened and emptied by closed-loop control intake valve (24)
Startup, using empty negative pressure caused by blower fan (22a) from idle air blower cover (6) extract idle air purging mixed gas delivery pipeline
After (7b), the gas remained in pipeline is discharged into air through emptying air inlet pipe (23b)；Or
After heat-accumulating type high-temperature oxidation unit (12) is stopped transport, by closed-loop control intake valve (24), multifunction valve (38) open and
The startup of blower fan (22a) is emptied, air purging idle air conveyance conduit (7a) and mixed gas delivery pipe are extracted from breather pipe (37)
Behind road (7b), the gas remained in pipeline is discharged into air through emptying air inlet pipe (23b).
13. coal mine methane according to claim 12 and the blending processing system to draw out methane, it is characterised in that work as accumulation of heat
After formula high-temperature oxidation device (12) is stopped transport, atmospheric equilibrium idle air delivery pipe is utilized after being opened by closed-loop control multifunction valve (38)
Road (7a) and the pressure to draw out methane in connecting pipe (4).
14. coal mine methane according to claim 1 and the blending processing system to draw out methane, it is characterised in that described
Blending processing system also includes chimney (27), described chimney (27) by provided with clean gas conveyance conduit (26) and accumulation of heat
Formula high-temperature oxidation device (12) connects, for clean gas caused by heat-accumulating type high-temperature oxidation unit (12) oxidation processes to be discharged into
Air；Described clean gas conveyance conduit (26) is provided with clean gas valve (28), for controlling clean gas conveyance conduit
(26) opening and closing.
15. coal mine methane according to claim 14 and the blending processing system to draw out methane, it is characterised in that described
Blending processing system also includes steam boiler (31), described steam boiler (31) and chimney (27) by provided with hot blast it is defeated
Pipeline (30) is sent to be connected with heat-accumulating type high-temperature oxidation unit (12), the steam boiler (31) is used to absorb heat-accumulating type high-temperature oxidation dress
Put high-temperature hot-air caused by (12) and carry out heat energy utilization；Described hot blast conveying pipe road (30) is provided with by hot-blast valve (29) and hot blast
Port valve (32), described hot-blast valve (29) is used for the break-make for controlling hot blast conveying pipe road (30) and steam boiler (31), described
Hot blast by-passing valve (32) is used for the break-make for controlling hot blast conveying pipe road (30) and chimney (27).
16. coal mine methane according to claim 1 and the blending processing system to draw out methane, it is characterised in that described
Grading ring (36) is provided with air-introduced machine (11), described grading ring (36) is used to measure the gas in mixed gas delivery pipeline (7b)
Body flow.
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| CN201510889236.XA CN105381694B (en) | 2015-12-07 | 2015-12-07 | A kind of coal mine methane and the blending processing system to draw out methane |
| PCT/EP2016/079827 WO2017097733A1 (en) | 2015-12-07 | 2016-12-06 | A mixing and processing system of ventilation air methane and coal mine methane |
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| CN201510889236.XA CN105381694B (en) | 2015-12-07 | 2015-12-07 | A kind of coal mine methane and the blending processing system to draw out methane |
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| CN106764431B (en) * | 2016-11-28 | 2019-09-10 | 中国神华能源股份有限公司 | Gas Transmission system |
| CN107435554B (en) * | 2017-07-20 | 2023-06-06 | 山西文龙中美环能科技股份有限公司 | Gas blending system and gas blending concentration control method |
| CN111054229A (en) * | 2019-01-28 | 2020-04-24 | 河北寰球工程有限公司 | Ventilation air methane and low-concentration gas static mixer with suction function |
| 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 |
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| CN111058887A (en) * | 2019-12-30 | 2020-04-24 | 中铁十四局集团大盾构工程有限公司 | Long-distance ventilation and safety control system and method |
| CN111878155B (en) * | 2020-07-31 | 2022-08-12 | 山西兰能煤层气开发有限公司 | Coal mine low-concentration gas power generation device |
| CN112324488B (en) * | 2020-10-30 | 2022-09-16 | 中国平煤神马能源化工集团有限责任公司 | System for preparing saturated steam by low-gas high-temperature heat storage oxidation of coal mine |
| CN113019054B (en) * | 2021-03-31 | 2022-08-30 | 西安科技大学 | Gas filtering, cooling and purifying device and method for gas extraction pipeline |
| CN113250735A (en) * | 2021-04-14 | 2021-08-13 | 山东扬德科技有限公司 | Gas safe mixing system and method matched with gas oxidation device |
| CN113250736B (en) * | 2021-05-24 | 2024-02-13 | 华北科技学院(中国煤矿安全技术培训中心) | Gas explosion shock wave pipe network test system capable of detecting concentration in real time |
| CN117654348B (en) * | 2024-02-01 | 2024-04-23 | 沁水寺河瓦斯发电有限公司 | Gas mixing device for gas power generation |
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