CN104014223B - Ventilation air methane adsorber - Google Patents
Ventilation air methane adsorber Download PDFInfo
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- CN104014223B CN104014223B CN201410298269.2A CN201410298269A CN104014223B CN 104014223 B CN104014223 B CN 104014223B CN 201410298269 A CN201410298269 A CN 201410298269A CN 104014223 B CN104014223 B CN 104014223B
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Abstract
The invention discloses a ventilation air methane adsorber. The ventilation air methane adsorber comprises a closed adsorber box body, wherein a plurality of adsorption filtering cores are arranged in the adsorber box body, a ventilation air inlet pipeline and an enriched gas outlet pipeline are arranged at the bottom of the adsorber box body respectively, a hot air inlet pipeline and an emptying pipeline are arranged at the top part of the adsorber box body respectively, an upper guiding partition plate and a lower guiding partition plate, which are provided with air holes, are arranged in the adsorber box body, the adsorption filtering core is arranged between the upper guiding partition plate and the lower guiding partition plate and comprises a filtering core framework and an adsorption material, the filtering core framework comprises a tubular inner framework and a tubular outer framework, a plurality of air holes are formed in the walls of the tubular inner framework and the tubular outer framework, and the adsorption material is arranged between the inner framework and the outer framework. The ventilation air methane adsorber utilizes the methane adsorption material to adsorb methane at normal temperature and desorb at high temperature, adopts the temperature swing adsorption process to concentrate ventilation air methane, and can remarkably reduce the system energy consumption compared with the method adopting the pressure swing adsorption.
Description
Technical field
The invention belongs to coal mine methane utilizes field and in particular to a kind of ventilation air methane adsorber.
Background technology
In process of production, the air that its ventilating system is discharged can carry micro gas (methane), and content is about in colliery
0.3% about, normally referred to as idle air.Because in idle air, methane content is low and lacks effective Land use systems, typically all direct
Enter air.The methane content being emitted into by idle air in air is huge, according to relevant statistics, China's coal-mine annual watt
This discharge capacity be there are about 80%～90% and discharged in mine ventilation mode, more there is data to suggest that 2008 and is entered greatly by idle air
Methane content in gas has reached 16,100,000,000 m3.Separately have research to think, methane greenhouse effect is about 21 times of carbon dioxide, reclaim and
Using ventilation air gas be realize China's energy-saving and emission-reduction target significant.
Currently for the process of idle air, mainly there are hot counter flow oxidation technology and catalysis gas turbine technology although having many
Company just carries out, in coal enterprise, the industrial test that ventilation air methane oxidation utilizes system, but due to idle air concentration too low it is difficult to real
The economical operation of existing equipment.Improve idle air concentration so that idle air treatment technology has bigger pushing away by way of temp.-changing adsorption
Wide application space.
Only minority unit is in the research carrying out coal mine wind-lack gas Adsorption Concentration, " mine disclosed in patent documentation at present
In methane-rich in idle air and Application way " (200910187318.4), " separation absorption devices containing low-concentration methane gas "
(200920203210.5) mode all employing pressure-variable adsorption concentrates to ventilation air gas, and this mode shortcoming is frequently
Boosting absorption, the energy consumption of generation is higher, is unfavorable for the economical operation of total system.A kind of patent " the methane in coal mine methane
Recovery method " (CN101381269B) adopts physical method, according to the little principle of methane relative air density, right by attached dose of coal
The dynamic adsorption balance of methane, and the physical separation of air and methane is realized by stratification.The method has one in theory
Fixed feasibility, but in actual mechanical process, because methane is less with the density difference of air, in not advising of container interior air-flow flowing
Then property may make this lamination be difficult to it is impossible to ensure separating effect.
Content of the invention
In view of this, it is an object of the invention to provide a kind of ventilation air methane adsorber, using room temperature absorption, elevated temperature desorption
Principle carries out the separation of methane, good separating effect and significantly reduce system energy consumption.
The purpose of the present invention is achieved through the following technical solutions：
A kind of ventilation air methane adsorber, including airtight adsorber casing, is provided with multiple suctions in described adsorber casing
Attached filter element, the bottom of described adsorber casing is respectively arranged with idle air air inlet pipeline and enriched gas outlet pipe, described absorption
The top of device casing is respectively arranged with hot blast air inlet pipeline and emptying pipeline, is provided with and has air-vent in described adsorption box body
Upper diaphragm and lower diaphragm, described absorption filter element is arranged between diaphragm and lower diaphragm, described absorption
Consider core and include frame of filter element and adsorbing material, described frame of filter element includes inner frame and outer skeleton in a tubular form, described inner and outer
Substantial amounts of air-vent is provided with the tube wall of skeleton, described adsorbing material is arranged between inside and outside skeleton.
Further, between described inside and outside skeleton, the thickness of adsorbing material is less than 20cm.
Further, described frame of filter element is metallic framework, and described metallic framework inner ring is rustless steel sieve plate, and outer ring is stainless
Steel wire, described adsorbing material is by being wound around or being arranged between Internal and external cycle by way of piling up.
Further, described sorbent material is in threadiness or integral honeycomb shape.
Further, described sorbent material is in activated carbon, silica gel, adsorbent resin, NACF or zeolite molecular sieve
One or more combination.
Further, adsorber box inside described in described adsorbent casing is covered with heat preservation rock.
Further, described ventilation air methane adsorber also includes control unit, and described idle air air inlet pipeline, enriched gas are given vent to anger
It is provided with air operated reversing valve, pressure transducer and temperature sensor on pipeline, hot blast air inlet pipeline and emptying pipeline, described weary
Concentration sensor and flow transducer are additionally provided with wind air inlet pipeline and enriched gas outlet pipe, in described absorption filter element also
It is provided with temperature sensor.
The invention has the beneficial effects as follows：
First, the present invention is using gas adsorption material adsorption gas, the feature being desorbed at high temperature at normal temperatures, by becoming
Warm absorbing process realizes the concentration of ventilation air gas, and gas desorption can utilize the waste heat flue gas of follow-up regenerative oxidation device Lai real
Existing, compare with pressure-variable adsorption, significantly reduce the energy consumption of system, apply better economy.
Secondly, the present invention is provided with the special construction (internal skeleton of hollow flow-guiding of upper and lower diaphragm and absorption filter element
Frame, adsorbing material is arranged between inside and outside skeleton, and the tube wall of inner and outer skeleton is provided with substantial amounts of air-vent), hence in so that
Air flow method is more uniform, and adsorption effect more preferably, also reduces gas-flow resistance simultaneously, reduces system energy consumption.
Again, studied according to many experiments and find, when adsorbing material thickness is less than 20cm, its radiating is very fast, adsorbing material
Extra cooling need not be carried out and can again recover absorbability, decrease the efficiency that cooling process improves system.
Finally, by being accurately controlled unit and controlling not higher than 150 DEG C of filter element heating-up temperature it is ensured that the longevity of adsorbing material
Life.
Other advantages of the present invention, target and feature will be illustrated to a certain extent in the following description, and
And to a certain extent, will be apparent to those skilled in the art based on to investigating hereafter, or can
To be instructed from the practice of the present invention.The target of the present invention and other advantages can be realized by description below and
Obtain.
Brief description
In order that the object, technical solutions and advantages of the present invention are clearer, below in conjunction with accompanying drawing the present invention is made into
The detailed description of one step, wherein：
Fig. 1 is present configuration schematic diagram.
Specific embodiment
Hereinafter with reference to accompanying drawing, the preferred embodiments of the present invention are described in detail.It should be appreciated that preferred embodiment
Only for the present invention is described, rather than in order to limit the scope of the invention.
As illustrated, a kind of ventilation air methane adsorber, including airtight adsorber casing 6, set in described adsorber casing
It is equipped with multiple absorption filter elements 7, the bottom of described adsorber casing is respectively arranged with idle air air inlet pipeline 10 and enriched gas are given vent to anger
Pipeline 8, the top of described adsorber casing is respectively arranged with hot blast air inlet pipeline 11 and emptying pipeline 1, in described adsorption box body
Be provided with the upper diaphragm with air-vent and lower diaphragm, described absorption filter element 7 be arranged on diaphragm 4 and under lead
Between stream dividing plate 5, described absorption is considered core and is included frame of filter element and adsorbing material, and described frame of filter element includes inner frame in a tubular form
With outer skeleton, the tube wall of described inner and outer skeleton is provided with substantial amounts of air-vent, described adsorbing material is arranged on inside and outside skeleton
Between.
In the present embodiment, when carrying out adsorption process, idle air is entered along absorption filter element 7 radially by idle air air inlet pipeline 10
Flow into, flow upwards out along hollow axle center, discharge through emptying pipeline 1；When carrying out being desorbed flow process, hot blast is desorbed pipeline 11 from hot blast
Enter adsorber, heat adsorbing material through absorption filter element 7, thus by the methane desorption of enrichment out, from enriched gas pipeline 8
Discharge.The space adsorbing casing top is separated into a mixing chamber 4 and secondary mixing chamber 5 using upper diaphragm by the present invention,
During desorption, hot blast uniformly flows to secondary mixing chamber so that hot-air flow is evenly distributed from a mixing chamber, and makes institute
Filling filter element all can fully be desorbed；Descend diaphragm that the space adsorbing lower box is separated into positioned at the lower partition in the same manner
Mixing chamber and be located at the secondary mixing chamber in dividing plate top, hot-air flow carries the adsorbate being desorbed out from absorption filter element, from
Secondary mixing chamber is uniformly flowed to, so that the concentration of adsorbate is more uniform in air-flow after desorption in mixing chamber；With
When, the filter cartridge construction of above-mentioned hollow and the adsorbing material with reference to efficient low-resistance make the flow resistance of filter element reduce, and reduce
The operation power consumption of system fan.Present system high adsorption capacity, adsorption/desorption speed is fast, adsorbs and desorption efficiency high.
As further improvement of this embodiment, between described inside and outside skeleton, the thickness of adsorbing material is less than 20cm, existing
The thickness of the adsorbing material of technology is typically thicker, by the difference of adsorption capacity, is set to 30～60cm, heat filter element thickness more
In order that filter element quickly recovers absorbability needs to import cold wind and carry out cooling to filter element and make filter element extensive rapidly after wind desorption
Multiple absorbability, due to heat conduction soon, when adsorbing material thickness is less than 20cm, absorption filter element can be quick for the filter cartridge construction of the present invention
Cool to room temperature thus fast quick-recovery absorbability, after being therefore desorbed, cold front heavy rain need not be imported.
As further improvement of this embodiment, described frame of filter element is metallic framework, and described metallic framework inner ring is not
Rust steel sieve plate, outer ring is stainless steel cloth, and described adsorbing material is by being wound around or being arranged between Internal and external cycle by way of piling up；This
Filter cartridge construction air-flow in enforcement is uniformly smooth, high adsorption capacity, adsorbs and desorption efficiency high, convenient to install and maintain.
As further improvement of this embodiment, described sorbent material is in threadiness or integral honeycomb shape；The present embodiment
Structure, adsorption area is big, high adsorption capacity.
As further improvement of this embodiment, described sorbent material is activated carbon, silica gel, adsorbent resin, activated carbon
One or more of fiber or zeolite molecular sieve combine.
As further improvement of this embodiment, adsorber box inside described in described adsorbent casing is covered with insulation rock
Cotton, reduces the heat exchange inside and outside adsorption box, thus reducing energy consumption.
As further improvement of this embodiment, described ventilation air methane adsorber also includes control unit, and described idle air enters
It is provided with air operated reversing valve 12, pressure sensing on air pipe, enriched gas outlet pipe, hot blast air inlet pipeline and emptying pipeline
Device 13 and temperature sensor 3, described idle air air inlet pipeline and enriched gas outlet pipe are additionally provided with concentration sensor 2 and stream
Quantity sensor 9, is additionally provided with temperature sensor in described absorption filter element.The present embodiment controls heating by being accurately controlled unit
Not higher than 150 DEG C of temperature is it is ensured that the life-span of adsorbing material.
The ventilation air methane adsorber of the present embodiment, process idle air is 1000m3/ h, idle air initial concentration is 0.3%, passes through
After hot blast desorption, its flow is changed into 200m3/ h, concentration is 1%, can be supplied to lean combustion catalysis gas turbine or regenerative oxidation device makes
With.
Finally illustrate, above example only in order to technical scheme to be described and unrestricted, although with reference to relatively
Good embodiment has been described in detail to the present invention, it will be understood by those within the art that, can be to the skill of the present invention
Art scheme is modified or equivalent, the objective without deviating from the technical program and scope, and it all should be covered in the present invention
Right in the middle of.
Claims (5)
1. a kind of ventilation air methane adsorber, including airtight absorption casing, is provided with multiple absorption filter elements in described adsorption box body,
The bottom of described absorption casing is respectively arranged with idle air air inlet pipeline and enriched gas outlet pipe, the top of described absorption casing
Be respectively arranged with hot blast air inlet pipeline and emptying pipeline it is characterised in that：It is provided with described adsorption box body and there is air-vent
Upper diaphragm and lower diaphragm, described upper diaphragm and lower diaphragm are respectively by described absorption casing top or bottom
Space be separated into a mixing chamber and secondary mixing chamber, described absorption filter element be arranged on diaphragm and lower diaphragm it
Between, described absorption is considered core and is included frame of filter element and adsorbing material, and described frame of filter element includes inner frame and outer skeleton in a tubular form,
Substantial amounts of air-vent is provided with the tube wall of described inner and outer skeleton, described adsorbing material is arranged between inside and outside skeleton；Described
Between inside and outside skeleton, the thickness of adsorbing material is less than 20cm；Described frame of filter element is metallic framework, and described metallic framework inner ring is
Rustless steel sieve plate, outer ring is stainless steel cloth, and described adsorbing material is by being wound around or being arranged between Internal and external cycle by way of piling up.
2. ventilation air methane adsorber according to claim 1 it is characterised in that：Described sorbent material is in fibrous or whole
Body is cellular.
3. ventilation air methane adsorber according to claim 1 it is characterised in that：Described sorbent material is activated carbon, silicon
One or more of glue, adsorbent resin, NACF or zeolite molecular sieve combine.
4. ventilation air methane adsorber according to claim 1 it is characterised in that：Casing is adsorbed described in described adsorbent casing
Inner side is covered with heat preservation rock.
5. ventilation air methane adsorber according to claim 1 it is characterised in that：Described ventilation air methane adsorber also includes controlling
Unit processed, described idle air air inlet pipeline, enriched gas outlet pipe, hot blast air inlet pipeline and emptying pipeline is provided with pneumatic
Reversal valve, pressure transducer and temperature sensor, described idle air air inlet pipeline and enriched gas outlet pipe are additionally provided with dense
Degree sensor and flow transducer, are additionally provided with temperature sensor in described absorption filter element.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410298269.2A CN104014223B (en) | 2014-06-26 | 2014-06-26 | Ventilation air methane adsorber |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410298269.2A CN104014223B (en) | 2014-06-26 | 2014-06-26 | Ventilation air methane adsorber |
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| CN104014223A CN104014223A (en) | 2014-09-03 |
| CN104014223B true CN104014223B (en) | 2017-02-15 |
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| CN201410298269.2A Active CN104014223B (en) | 2014-06-26 | 2014-06-26 | Ventilation air methane adsorber |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104611193A (en) * | 2015-02-11 | 2015-05-13 | 重庆大学 | Device and method for quickly enriching Nx-DAMO bacteria |
| CN106338585A (en) * | 2016-10-09 | 2017-01-18 | 江苏建筑职业技术学院 | Low-concentration airflow gas methane extracting experiment device |
| CN106582196B (en) * | 2016-12-19 | 2019-02-22 | 航天凯天环保科技股份有限公司 | A kind of modularization granular active carbon emission-control equipment |
| CN110292834A (en) * | 2019-07-17 | 2019-10-01 | 贵州大学 | Absorption plant is used in a kind of leakage of coal gas in mine |
| CN112169535A (en) * | 2020-09-30 | 2021-01-05 | 广州骁庆科技有限公司 | Extraction device and extraction method for coal mine ventilation air methane |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2727585A (en) * | 1950-01-10 | 1955-12-20 | W E Moore And Company | Apparatus for the treatment of gases |
| US4770676A (en) * | 1986-05-16 | 1988-09-13 | Air Products And Chemicals, Inc. | Recovery of methane from land fill gas |
| CN101518707A (en) * | 2008-02-28 | 2009-09-02 | 北京时代桃源环境科技有限公司 | Method for adsorbing and dehumidifying mash gas and device thereof |
| CN103301711A (en) * | 2013-07-03 | 2013-09-18 | 中煤科工集团重庆研究院 | Multi-tower type ventilation air methane temperature swing adsorption concentration device |
| CN203899407U (en) * | 2014-06-26 | 2014-10-29 | 中煤科工集团重庆研究院有限公司 | Ventilation air methane adsorber |
-
2014
- 2014-06-26 CN CN201410298269.2A patent/CN104014223B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2727585A (en) * | 1950-01-10 | 1955-12-20 | W E Moore And Company | Apparatus for the treatment of gases |
| US4770676A (en) * | 1986-05-16 | 1988-09-13 | Air Products And Chemicals, Inc. | Recovery of methane from land fill gas |
| CN101518707A (en) * | 2008-02-28 | 2009-09-02 | 北京时代桃源环境科技有限公司 | Method for adsorbing and dehumidifying mash gas and device thereof |
| CN103301711A (en) * | 2013-07-03 | 2013-09-18 | 中煤科工集团重庆研究院 | Multi-tower type ventilation air methane temperature swing adsorption concentration device |
| CN203899407U (en) * | 2014-06-26 | 2014-10-29 | 中煤科工集团重庆研究院有限公司 | Ventilation air methane adsorber |
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