CN201292859Y - Mine ventilation air oxidation apparatus - Google Patents
Mine ventilation air oxidation apparatus Download PDFInfo
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- CN201292859Y CN201292859Y CNU200820224339XU CN200820224339U CN201292859Y CN 201292859 Y CN201292859 Y CN 201292859Y CN U200820224339X U CNU200820224339X U CN U200820224339XU CN 200820224339 U CN200820224339 U CN 200820224339U CN 201292859 Y CN201292859 Y CN 201292859Y
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- oxidation
- spent air
- directed dispenser
- control valve
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Abstract
The utility model provides a mine spent air oxidation device which comprises a ceramic oxidation bed with an insulating layer. The mine spent air oxidation device is characterized by being additionally provided with a plurality of spent air distribution adjusting devices which comprise an exhaust pipe, a spent air inlet pipe, a control valve, methane sensors, a four-way change valve and flow adjusting valves, wherein the methane sensors are respectively arranged on the exhaust pipe and the spent air inlet pipe provided with the control valve, the exhaust pipes and the spent air inlet pipes are connected with the four-way change valves, the upper side and the lower side of the four-way change valve are symmetrically provided with two gas channels, each gas channel is internally provided with one flow adjusting valve, a first guide distributor and a secondary guide distributor, wherein the two secondary guide distributors are symmetrically arranged at the upper side and the lower side of the ceramic oxidation bed and communicated with the two first guide distributors. The mine spent air oxidation device can adjust the flow of spent air respectively entering from the oxidation bed so as to ensure the flow to be consistent, and guides and distributes the spent air at the inlet of the oxidation bed so as to lead the spent air flowing through the section of the oxidation bed to be evenly distributed.
Description
Technical field
The utility model relates to a kind of mine air-lack oxidation unit of administering and utilizing mine air-lack mash gas, belongs to the hot counter flow oxidation device technique of low concentration organic gas field.
Background technology
The main component of coal mine gas is a methane, seldom produces pollutant after the burning, belongs to the high-quality clean gas energy.But gas also is simultaneously potential safety hazard maximum in the Coal Production.In order to improve the safety of Coal Production, adopt a large amount of the ventilation to discharge coal mine gas (being called mine air-lack) usually.Nearly all colliery does not attempt reclaiming and handle the methane that lacks in the wind, and directly it is discharged among the atmosphere, and this not only causes the huge waste of the energy, and atmospheric environment has been caused serious pollution.Mine air-lack has following three characteristics: (1) wind discharge capacity is huge, and the weary air quantity of a typical mine master air outlet is 100-250m
3/ s; (2) gas is generally less than 1%; (3) the gas density fluctuation range is big.These characteristics have determined coal mine wind-lack gas to be difficult to utilize conventional burners directly to burn under the situation of auxiliary fuel not having.The method of effectively utilizing of coal mine wind-lack gas is to adopt the counter flow oxidation technology.The counter flow oxidation technology can be divided into two kinds of hot counter-current reactor and catalysis counter-current reactors according to oxidation mechanism.The basic functional principle of these two kinds of reactors is identical substantially with structure, and the main distinction is that the catalysis counter-current reactor has used oxidation catalyst, has reduced the needed temperature of gas oxidation, but has also increased considerably equipment cost and maintenance cost.MEGTEC company adopts the methane in hot counter-current reactor (VOCSIDIZER) the processing mine air-lack, and reclaims its energy.VOCSIDIZER adopts the regenerated heat exchange principle between gas and the thermal storage ceramic oxidation bed, at first the thermal storage ceramic oxidation bed is heated to about 1000 ℃ with electric heater, mine air-lack is with a direction inflow and pass through reactor, gas is heated by thermal storage ceramic, temperature improves constantly, until methane oxidation.Then, the hot gas of oxidation continues to move to the another side of bed, and heat is fallen in heat transferred thermal storage ceramic gradually.Along with constantly entering of gas, oxidation bed inlet side temperature reduces gradually, and the outlet side temperature raises gradually.Do not have enough heats gas to be heated to before the oxidizing temperature at entrance side, begin commutation, gas flow is reversed.The key of this reactor is to make the central area of oxidation bed on flow direction remain high temperature the continuous conversion direction of motion of sending in the reactor of gas, to guarantee keeping certainly of oxidizing process." coal mine ventilation air methane oxidation device " of China's exploitation (200620081956.X) adopts horizontal oxidation bed structure, and its principle and VOCSIDIZER are basic identical.Because the mine air-lack amount is huge, at present the coal mine ventilation air methane oxidation device of the exploitation ability of handling mine air-lack be generally 2.5～12 ten thousand steres/hour, and weary wind is less at the flow velocity of oxidation unit inside, be generally less than 1.2 meter per seconds, the oxidation bed actual internal area of oxidation unit is between 12.5～60 square metres.For big actual internal area like this,, be difficult to guarantee that the weary flow velocity of wind on the oxidation bed flow area is even if do not take weary wind distribution technique measure.If the even difference of flow velocity is bigger, also difference is bigger for the amount of oxidizing of methylene on the flow area, certainly will cause oxidation bed flow area temperature distributing disproportionation even, and some position temperature is higher, some position temperature is lower.The position that temperature is high causes thermal storage ceramic to destroy the life-span of having reduced oxidation unit easily; At the low position of temperature, methane oxidation is incomplete, has reduced the oxygenation efficiency of oxidation unit.Above-mentioned several oxidation units all adopt an air intake and air outlet at upper and lower sides (horizontal oxidation unit is a left and right sides), in order to improve the weary flow velocity uniformity of wind on the oxidation bed flow area, adopted very high blast pressure, this certainly will increase the consumption of electric energy.
Above-mentioned several oxidation units adopt timing reversing.Because oxidation unit is in that up and down the gas circuit circulation area and the circulating resistance of both sides (horizontal oxidation unit is the left and right sides) are difficult to accomplish in full accord.Because flow field, oxidation bed both sides exists fine difference, oxidation unit can produce the phenomenon that the oxidation bed center is departed from the high-temperature region through after the long-time running, and oxidation bed can not automatic holding reaction when serious.
The utility model content
The purpose of this utility model provides a kind of mine air-lack oxidation unit of vertical mine air-lack mash gas, the weary wind flow that enters from oxidation bed is respectively regulated, guarantee its flow unanimity, and in the oxidation bed entrance weary wind is led and distribute, the weary wind that flows through on the oxidation bed cross section is evenly distributed.Its technical scheme is:
A kind of mine air-lack oxidation unit, comprise the ceramic oxidation bed that is provided with insulation layer, it is characterized in that: set up the weary wind of many groups and distribute adjusting device, comprise stack, weary wind air inlet pipe, control valve, methane transducer, four-way change-over valve and flow control valve, wherein methane transducer is separately positioned on stack and is equipped with on the weary wind air inlet pipe of control valve, stack and weary wind air inlet pipe connect four-way change-over valve, and arranging 2 gas passages in the bilateral symmetry up and down of four-way change-over valve, a flow control valve is respectively arranged in each gas passage, one-level directed dispenser and secondary directed dispenser, wherein 2 secondary directed dispensers are arranged symmetrically in the both sides up and down of ceramic oxidation bed, and are connected with the one-level directed dispenser.
Described mine air-lack oxidation unit is being arranged a plurality of upright deflectors in the one-level directed dispenser, a plurality of upright deflectors distribute along the axis vertical of one-level directed dispenser, evenly is partitioned into the air outlet of one-level directed dispenser a plurality of.
Described mine air-lack oxidation unit, arranging a plurality of horizontal deflectors in the secondary directed dispenser, a plurality of horizontal deflectors are along the axial cross direction profiles of secondary directed dispenser, and the length of each horizontal deflector extends successively from inside to outside, evenly are partitioned into the air outlet of secondary directed dispenser a plurality of.
Described mine air-lack oxidation unit is provided with a plurality of thermocouples in the ceramic oxidation bed.
Its operating principle is: at first be heated to about 1000 ℃ with the ceramic heat storage body of heating system with ceramic oxidation bed centre.Mine air-lack is from air inlet pipe, and process control valve and four-way change-over valve enter the gas passage of upside.Weary wind enters the one-level directed dispenser through the flow control valve of upside.In the one-level directed dispenser, weary wind evenly flows in the axial formation of the effect lower edge one-level directed dispenser of upright deflector, enters the secondary directed dispenser then.In the secondary directed dispenser, weary wind evenly flows in the axial formation of the effect lower edge of horizontal deflector secondary directed dispenser.Weary wind enters ceramic oxidation bed equably, is heated by thermal storage ceramic, and temperature improves constantly, and the methane oxidation in weary wind becomes carbon dioxide and water.Then, the hot gas of oxidation continues to move forward, the thermal storage ceramic of heat transferred pottery oxidation bed is lowered the temperature gradually, and secondary directed dispenser, one-level directed dispenser, the flow control valve by downside enters four-way change-over valve and stack at last, is discharged to the external world.
Along with constantly entering of weary general mood body, ceramic oxidation bed upside temperature reduces gradually, and the downside temperature raises gradually.Do not have enough heats will lack wind at upside and be heated to before the methane oxidation temperature, the counter-rotating of control four-way change-over valve, weary wind enters ceramic oxidation bed through flow control valve, one-level directed dispenser, the secondary directed dispenser of downside.The hot gas of oxidation enters four-way change-over valve and stack through secondary directed dispenser, one-level directed dispenser, the flow control valve of upside, is discharged to the external world.Circulation so repeatedly.
The utility model compared with prior art, its major advantage is:
(1) on the gas passage of the both sides up and down of four-way change-over valve, flow control valve is housed, by regulating the aperture of flow control valve, make the weary wind flow that enters oxidation bed from both sides up and down equate, avoid causing the high-temperature region to depart from the phenomenon at oxidation bed center, thereby guarantee oxidation unit operation steady in a long-term because of flow field, oxidation bed both sides exists fine difference.
(2) under the water conservancy diversion and distributional effects of one-level directed dispenser and secondary directed dispenser, when weary wind enters ceramic oxidation bed, distributed uniform on the oxidation bed flow cross, the flow velocity unanimity, thereby make the amount of oxidizing of methylene on the oxidation bed cross section identical, uniformity of temperature profile had both improved whole methane oxidation rate, improve the functional reliability of oxidation unit again, prolonged application life.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment;
Fig. 2 is the A-A sectional drawing of middle one-level directed dispenser embodiment illustrated in fig. 1;
Fig. 3 is the B-B sectional drawing of middle secondary directed dispenser embodiment illustrated in fig. 1;
Fig. 4 is a vertical view embodiment illustrated in fig. 1.
Among the figure: 1, one-level directed dispenser 2, secondary directed dispenser 3, supporting network 4, ceramic oxidation bed 5, thermocouple 6, insulation layer 7, metal shell 8, horizontal deflector 9, upright deflector 10, flow control valve 11, four-way change-over valve 12, methane transducer 13, control valve 14, weary wind air inlet pipe 15, stack 16, pipeline
The specific embodiment
In the embodiment shown in Fig. 1-4, ceramic oxidation bed 4 is provided with 4 groups of weary wind and distributes and adjusting device.Every group of weary wind distributes in the adjusting device, methane transducer 12 is separately positioned on stack 15 and is equipped with on the weary wind air inlet pipe 14 of control valve 13, stack 15 and weary wind air inlet pipe 14 connect four-way change-over valve 11, and arranging 2 gas passages in the bilateral symmetry up and down of four-way change-over valve 11, a flow control valve 10, one-level directed dispenser 1 and secondary directed dispenser 2 are respectively arranged in each gas passage, wherein 2 secondary directed dispensers 2 are arranged symmetrically in the both sides up and down of ceramic oxidation bed 4, and are connected with one-level directed dispenser 1.Arranging a plurality of upright deflectors 9 in each one-level directed dispenser 1, a plurality of upright deflectors 9 distribute along the axis vertical of one-level directed dispenser 1, evenly be partitioned into the air outlet of one-level directed dispenser 1 a plurality of, arranging a plurality of horizontal deflectors 8 in each secondary directed dispenser 2, a plurality of horizontal deflectors 8 are along the axial cross direction profiles of secondary directed dispenser 2, and by interior (contiguous ceramic oxidation bed 4) to outside the length of each horizontal deflector 8 extend successively, evenly be partitioned into the air outlet of secondary directed dispenser 2 a plurality of, like this under the water conservancy diversion and distributional effects of one-level directed dispenser 1 and secondary directed dispenser 2, weary wind distributed uniform on ceramic oxidation bed 4 flow cross, the flow velocity unanimity, thereby make the amount of oxidizing of methylene on ceramic oxidation bed 4 cross sections identical, uniformity of temperature profile.
Claims (4)
1, a kind of mine air-lack oxidation unit, comprise the ceramic oxidation bed (4) that is provided with insulation layer (6), it is characterized in that: set up the weary wind of many groups and distribute and adjusting device, comprise stack (15), weary wind air inlet pipe (14), control valve (13), methane transducer (12), four-way change-over valve (11) and flow control valve (10), wherein methane transducer (12) is separately positioned on stack (15) and is equipped with on the weary wind air inlet pipe (14) of control valve (13), stack (15) and weary wind air inlet pipe (14) connect four-way change-over valve (11), and arranging 2 gas passages in the bilateral symmetry up and down of four-way change-over valve (11), a flow control valve (10) is respectively arranged in each gas passage, one-level directed dispenser (1) and secondary directed dispenser (2), wherein 2 secondary directed dispensers (2) are arranged symmetrically in the both sides up and down of ceramic oxidation bed (4), and are connected with one-level directed dispenser (1).
2, mine air-lack oxidation unit according to claim 1, it is characterized in that: arranging a plurality of upright deflectors (9) in the one-level directed dispenser (1), a plurality of upright deflectors (9) distribute along the axis vertical of one-level directed dispenser (1), evenly are partitioned into the air outlet of one-level directed dispenser (1) a plurality of.
3, mine air-lack oxidation unit according to claim 1, it is characterized in that: arranging a plurality of horizontal deflectors (8) in the secondary directed dispenser (2), a plurality of horizontal deflectors (8) are along the axial cross direction profiles of secondary directed dispenser (2), and the length of each horizontal deflector (8) extends successively from inside to outside, evenly is partitioned into the air outlet of secondary directed dispenser (2) a plurality of.
4, mine air-lack oxidation unit according to claim 1 is characterized in that: be provided with a plurality of thermocouples (5) in the ceramic oxidation bed (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820224339XU CN201292859Y (en) | 2008-11-28 | 2008-11-28 | Mine ventilation air oxidation apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820224339XU CN201292859Y (en) | 2008-11-28 | 2008-11-28 | Mine ventilation air oxidation apparatus |
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| Publication Number | Publication Date |
|---|---|
| CN201292859Y true CN201292859Y (en) | 2009-08-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNU200820224339XU Expired - Fee Related CN201292859Y (en) | 2008-11-28 | 2008-11-28 | Mine ventilation air oxidation apparatus |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101845960A (en) * | 2010-05-07 | 2010-09-29 | 大连海事大学 | Ventilation air methane countercurrent oxidation device with flue gas suction device |
| CN101906986A (en) * | 2010-07-09 | 2010-12-08 | 胜利油田胜利动力机械集团有限公司 | Method for distributing intake airflow and exhaust airflow of coal mine methane device |
| CN103328769A (en) * | 2010-11-24 | 2013-09-25 | 科基思管理服务私人有限公司 | System and apparatus for connecting a gas source to a thermal oxidizer |
| NO337239B1 (en) * | 2013-12-06 | 2016-02-22 | Storroesaeter Rune | System and method for extracting smoke from road tunnels |
| CN106540538A (en) * | 2015-09-17 | 2017-03-29 | 北京化工大学 | A kind of apparatus and method for of wind resource assessment catalysis oxidation |
-
2008
- 2008-11-28 CN CNU200820224339XU patent/CN201292859Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101845960A (en) * | 2010-05-07 | 2010-09-29 | 大连海事大学 | Ventilation air methane countercurrent oxidation device with flue gas suction device |
| CN101906986A (en) * | 2010-07-09 | 2010-12-08 | 胜利油田胜利动力机械集团有限公司 | Method for distributing intake airflow and exhaust airflow of coal mine methane device |
| CN103328769A (en) * | 2010-11-24 | 2013-09-25 | 科基思管理服务私人有限公司 | System and apparatus for connecting a gas source to a thermal oxidizer |
| NO337239B1 (en) * | 2013-12-06 | 2016-02-22 | Storroesaeter Rune | System and method for extracting smoke from road tunnels |
| CN106540538A (en) * | 2015-09-17 | 2017-03-29 | 北京化工大学 | A kind of apparatus and method for of wind resource assessment catalysis oxidation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090819 Termination date: 20111128 |