CN102998390A - Method for analyzing carbon monoxide gas in coal under anaerobic condition - Google Patents
Method for analyzing carbon monoxide gas in coal under anaerobic condition Download PDFInfo
- Publication number
- CN102998390A CN102998390A CN2012104948108A CN201210494810A CN102998390A CN 102998390 A CN102998390 A CN 102998390A CN 2012104948108 A CN2012104948108 A CN 2012104948108A CN 201210494810 A CN201210494810 A CN 201210494810A CN 102998390 A CN102998390 A CN 102998390A
- Authority
- CN
- China
- Prior art keywords
- crusher chamber
- gas
- coal
- oxygen free
- free condition
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Landscapes
- Disintegrating Or Milling (AREA)
Abstract
The invention discloses a method for analyzing carbon monoxide gas in coal under an anaerobic condition. The method comprises the following steps: firstly, getting coal out of a coal mine and making the coal to a block coal sample; placing the block coal sample in a crushing cavity, covering the crushing cavity with a crushing cavity cover and then introducing inert gas to the crushing cavity; driving the crushing cavity to vibrate up and down through a motor so as to crush the coal sample in the crushing cavity; and at last, pumping the gas out of the crushing cavity through an air pump and sending the gas to a chromatographic instrument for analysis. By utilizing the method, whether associated carbon monoxide exists in the coal and the content of the carbon monoxide can be completely and truly reflected; and the method is simple in technology and high in detection accuracy.
Description
Technical field
The present invention relates to a kind of analysis method for gases, in particular, the present invention relates generally to a kind of method that CO gas is analyzed in the coal under oxygen free condition.
Background technology
At present, Conflagration Caused by Coal Self-ignition early prediction forecasting procedure commonly used has index gas analytic approach, thermometry, tracer gas technique etc.The index gas analytic approach is a kind of method that is most widely used, it is by a series of reflection coal oxidations that produce in the mensuration coal seam ignition process and the index gas of burning degree, such as carbon monoxide, carbon dioxide, ethane, ethene, acetylene etc., rising along with the coal temperature, marked change will occur in its generation, therefore, present China carries out the early prediction of coal bed fire usually with the variation of index gas generation.Regulation in " safety regulations in coal mine ": the maximum permissible concentration of carbon monoxide is 0.0024%(24ppm in the mine air).
Some mining area in Ningxia, Shanxi and the Hebei province of China, in the situation of goaf without any coal spontaneous combustion sign, the CO gas of high concentration will appear in upper corner between the workplace normal production period, gives to reflect that truly the spontaneous combustion of coal situation has been brought uncertainty in the goaf.Increasing scholar recognizes the generation of CO gas, not because spontaneous combustion or miscellaneous cause occur in the coal seam entirely, and very likely be that the CO gas of association causes in the run of mine coal seam, severe jamming the monitoring analysis work of Period of Coal Seam Spontaneous Combustion.Existing analytical approach can disclose the Spontaneous Combustion Indication Gas situation in most of colliery.But can not reflect fully, really coal whether association CO gas and content thereof.Consider that prior art can not address this problem, the invention provides the method that CO gas is analyzed in the coal under the oxygen free condition, solve the primary attached carbon monoxide content of depositing of Measurement and analysis coal.
Summary of the invention
In order to overcome the deficiencies in the prior art, the invention provides a kind of method that CO gas is analyzed in the coal under oxygen free condition, may further comprise the steps:
At first under coal mine, take out coal, coal is made block coal sample;
Again coal sample is put into crusher chamber, build crusher chamber lid after, in crusher chamber, pass into inert gas;
By motor drives crusher chamber vertical tremor, the coal sample in the crusher chamber is carried out fragmentation again;
By the gas in the aspiration pump extraction crusher chamber, described gas is sent into chromatograph analysis at last.
Further technical scheme is: described inert gas comprises nitrogen and helium.
Further technical scheme is: after the described concentration that passes into the inert gas in the crusher chamber reaches 99%, close crusher chamber gas admittance valve and air outlet valve and carry out fragmentation again.
Further technical scheme is: described inert gas concentration is the result after by aspiration pump the gas suction chromatograph of crusher chamber being detected.
Further technical scheme is: described broken step and analytical procedure all are to carry out under anaerobic normal temperature state.
The invention provides a kind of under oxygen free condition CO gas analytic system in the coal, inert gas is stored in the inert gas bottle, inert gas enters crusher chamber by draft tube, draft tube is arranged on the lid of crusher chamber, crusher chamber covers and also is connected with escape pipe, escape pipe connects aspiration pump, and aspiration pump connects chromatograph again; The crusher chamber lid is arranged on the crusher chamber top, is provided with O-ring seal between crusher chamber and the crusher chamber lid; The crusher chamber lower end is provided with motor, and motor is fixed on the support, and the motor round end is fixedly connected with by disk, is provided with projection in the outer end of disk, and projection acts on the crusher chamber bottom, and the crusher chamber bottom also is provided with at least two group springs, and described spring is connected with support.
Further technical scheme is: be provided with the control inert gas on the described draft tube and enter the gas admittance valve of crusher chamber, be provided with the air outlet valve of control gas from the crusher chamber to the aspiration pump on the described escape pipe.
Further technical scheme is: also be provided with dismountable cylindrical broken rotor in the described crusher chamber.
Further technical scheme is: described crusher chamber covers end and also is provided with the spring that links closely, and the described spring that links closely is threaded bolt, outer casing spring, the crusher chamber that is used for linking closely lid.
Further technical scheme is: described draft tube and escape pipe are provided with the screen pack that coal dust is filtered by in the pipe of crusher chamber end.
Compared with prior art, one of beneficial effect of the present invention is: by being filled with inert gas to crusher chamber, get rid of the gas that impact detects, and get rid of coal and in shattering process, react, generate CO gas with oxygen, although existing analytical approach can disclose the Spontaneous Combustion Indication Gas situation in most of colliery.But can not reflect fully, really coal whether association CO gas and content thereof.Consider that prior art can not address this problem, the invention provides the method that CO gas is analyzed in the coal under the oxygen free condition,
Solve the primary attached carbon monoxide content of depositing of Measurement and analysis coal.
Description of drawings
Fig. 1 is the structural drawing of system of the present invention;
Embodiment
Below in conjunction with accompanying drawing the present invention is further elaborated.
The method that CO gas is analyzed in the coal under oxygen free condition, may further comprise the steps: at first take out coal under colliery, coal is made block coal sample, the size of block coal sample comprises the coal cinder of 2 * 2 * 3cm; Again coal sample is put into crusher chamber 14, after building crusher chamber lid 11, pass into inert gas in crusher chamber 14, the purpose that passes into inert gas is for the Bas Discharged in the crusher chamber 14, avoid coal in shattering process, to react with oxygen, so that testing result is more accurate; Drive crusher chamber 14 vertical tremors by motor 4 again, broken rotor carries out fragmentation to the coal sample in the crusher chamber 14, with the degree of coal sample reduction to the coal dust shape, makes the long-pending increase of coal surface, discharges to a greater extent the gaseous matter that comprises in the coal cinder; The gas of being extracted out in the crusher chamber 14 by aspiration pump 8 at last, this gas is gas to be analyzed just, again this gas sent into chromatograph 9 and analyzes.
According to a further advantageous embodiment of the invention, described inert gas comprises nitrogen and helium, nitrogen and helium cost are relatively low, obtain manner is comparatively simple, and also can satisfy the required condition that detects, after the concentration of the inert gas that passes into reaches 99%, close crusher chamber 14 gas admittance valves 12 and air outlet valve 7 and carry out again fragmentation, inert gas concentration is the result after by aspiration pump 8 the gas suction chromatograph 9 of crusher chamber 14 being detected, broken step and analytical procedure are all carried out under anaerobic normal temperature state, and purpose is in order to simulate the actual conditions under mine.
As shown in Figure 1 a kind of under oxygen free condition CO gas analytic system in the coal, inert gas is stored in the inert gas bottle 1, inert gas enters crusher chamber 14 by draft tube 12, draft tube 12 is arranged on the crusher chamber lid 11, also be connected with escape pipe 13 on the crusher chamber lid 11, escape pipe 13 connects aspiration pump 8, and aspiration pump 8 connects chromatograph 9 again; Crusher chamber lid 11 is arranged on crusher chamber 14 tops, is provided with O-ring seal between crusher chamber 14 and the crusher chamber lid 11; Crusher chamber 14 lower ends are provided with motor 4, and motor 4 is fixed on the support, and motor 4 round ends are fixedly connected with by disk, be provided with projection 5 in the outer end of disk, projection 5 acts on crusher chamber 14 bottoms, and crusher chamber 14 bottoms also are provided with at least two group springs 3, and spring 3 is connected with support.
According to an embodiment who is more preferably of the present invention, be provided with the control inert gas on the draft tube 12 and enter the gas admittance valve 2 of crusher chamber 14, be provided with on the escape pipe 13 control gas from crusher chamber 14 to aspiration pump 8 air outlet valve 7, the effect that gas admittance valve 2 and air outlet valve 7 are set is in the process of fragmentation, prevent that the gas in the crusher chamber 14 from spilling, and also prevent entering of extraneous gas, so that detect more accurate.
According to one an of the present invention embodiment who is more preferably, also be provided with dismountable cylindrical broken rotor 6 in the crusher chamber 14, the effect of broken rotor 6 is that coal cinder in the crusher chamber 14 is accelerated broken equipment, crusher chamber is covered 11 upper ends and also is provided with the spring 10 that links closely, the spring 10 that links closely is threaded bolt, outer casing spring, the crusher chamber that is used for linking closely lid 11, fastening spring 10 is to compressing the slit between crusher chamber lid 11 and the crusher chamber 14, so that fragmentation is carried out in fully airtight environment, guarantee the precision of analyzing and testing, draft tube 12 and escape pipe 13 are provided with the screen pack that coal dust is filtered by in the pipe of crusher chamber 14 ends, filter screen can be that the metal copper mesh adds cotton, be used for preventing after fragmentation, existing in the gas dust of a large amount of coals to enter into the effect of other equipment, also can be so that analyzing and testing be more accurate.
" embodiment " who speaks of in this manual, " another embodiment ", " embodiment ", etc., refer to specific features, structure or the characteristics described in conjunction with this embodiment and be included among at least one embodiment that the application's generality describes.A plurality of local appearance statement of the same race is not necessarily to refer to same embodiment in instructions.Furthermore, when describing a specific features, structure or characteristics in conjunction with arbitrary embodiment, what advocate is to realize that in conjunction with other embodiment this feature, structure or characteristics also fall within the scope of the invention.
Although invention has been described with reference to a plurality of explanatory embodiment of the present invention here, but, should be appreciated that those skilled in the art can design a lot of other modification and embodiments, these are revised and embodiment will drop within the disclosed principle scope and spirit of the application.More particularly, in the scope of, accompanying drawing open in the application and claim, can carry out multiple modification and improvement to building block and/or the layout of subject combination layout.Except modification that building block and/or layout are carried out with improving, to those skilled in the art, other purposes also will be obvious.
Claims (10)
1. the method that CO gas is analyzed in the coal under oxygen free condition is characterized in that may further comprise the steps: at first take out coal under colliery, coal is made block coal sample;
Again coal sample is put into crusher chamber, build crusher chamber lid after, in crusher chamber, pass into inert gas;
By motor drives crusher chamber vertical tremor, the coal sample in the crusher chamber is carried out fragmentation again;
By the gas in the aspiration pump extraction crusher chamber, send into chromatograph analysis at last.
2. a kind of method that CO gas is analyzed in the coal under oxygen free condition according to claim 1 is characterized in that described inert gas comprises nitrogen and helium.
3. a kind of method that CO gas is analyzed in the coal under oxygen free condition according to claim 1 after the concentration that it is characterized in that the described inert gas that passes into reaches 99%, is closed crusher chamber gas admittance valve and air outlet valve and is carried out fragmentation again.
4. a kind of method that CO gas is analyzed in the coal under oxygen free condition according to claim 3 is characterized in that described inert gas concentration is the result after by aspiration pump the gas suction analyser of crusher chamber being detected.
5. a kind of method that CO gas is analyzed in the coal under oxygen free condition according to claim 1 is characterized in that described broken step and analytical procedure all carry out under anaerobic normal temperature state.
6. CO gas analytic system in the coal under oxygen free condition, it is characterized in that inert gas is stored in the inert gas bottle, inert gas enters crusher chamber by draft tube, draft tube is arranged on the lid of crusher chamber, crusher chamber covers and also is connected with escape pipe, escape pipe connects aspiration pump, and aspiration pump connects chromatograph again; The crusher chamber lid is arranged on the crusher chamber top, is provided with O-ring seal between crusher chamber and the crusher chamber lid; The crusher chamber lower end is provided with motor, and motor is fixed on the support, and the motor round end is fixedly connected with by disk, is provided with projection in the outer end of disk, and projection acts on the crusher chamber bottom, and the crusher chamber bottom also is provided with at least two group springs, and described spring is connected with support.
According to claim 6 a kind of under oxygen free condition CO gas analytic system in the coal, it is characterized in that being provided with on the described draft tube control inert gas and enter the gas admittance valve of crusher chamber, be provided with the air outlet valve of control gas from the crusher chamber to the aspiration pump on the described escape pipe.
According to claim 6 a kind of under oxygen free condition CO gas analytic system in the coal, it is characterized in that also being provided with in the described crusher chamber dismountable cylindrical broken rotor.
According to claim 6 a kind of under oxygen free condition CO gas analytic system in the coal, it is characterized in that described crusher chamber covers end and also is provided with the spring that links closely, the described spring that links closely is threaded bolt, outer casing spring, the crusher chamber that is used for linking closely lid.
According to claim 6 a kind of under oxygen free condition CO gas analytic system in the coal, it is characterized in that described draft tube and escape pipe are provided with the screen pack that coal dust is filtered by in the pipe of crusher chamber end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210494810.8A CN102998390B (en) | 2012-11-28 | 2012-11-28 | Method for analyzing carbon monoxide gas in coal under anaerobic condition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210494810.8A CN102998390B (en) | 2012-11-28 | 2012-11-28 | Method for analyzing carbon monoxide gas in coal under anaerobic condition |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102998390A true CN102998390A (en) | 2013-03-27 |
| CN102998390B CN102998390B (en) | 2014-04-02 |
Family
ID=47927229
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210494810.8A Expired - Fee Related CN102998390B (en) | 2012-11-28 | 2012-11-28 | Method for analyzing carbon monoxide gas in coal under anaerobic condition |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102998390B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104880543A (en) * | 2015-06-16 | 2015-09-02 | 西安科技大学 | Experiment device and method for underground coal mine CO source mechanism and disappearing mechanism research |
| CN105181165A (en) * | 2015-10-27 | 2015-12-23 | 河南理工大学 | Device system for testing CO release and temperature change in coal incising process |
| CN106769641A (en) * | 2016-12-16 | 2017-05-31 | 华北理工大学 | The vacuum breaking detection means of coal containing CO |
| CN110208421A (en) * | 2019-01-31 | 2019-09-06 | 煤科集团沈阳研究院有限公司 | It is a kind of for measuring the device of hydrogen sulfide content in coal body |
| CN111097347A (en) * | 2020-01-13 | 2020-05-05 | 厦门大学 | Gas replacement and introduction synthesis reaction device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3716992A1 (en) * | 1987-04-30 | 1988-11-17 | Westfaelische Berggewerkschaft | Method of measuring proportions of combustible gas of low concentration in mine air |
| RU2088634C1 (en) * | 1992-06-22 | 1997-08-27 | Товарищество с ограниченной ответственностью "Уральская компания предпринимателей" | Method of determining optimal composition of coal charge for coking process |
| JP2004317260A (en) * | 2003-04-15 | 2004-11-11 | Kansai Coke & Chem Co Ltd | Method for measuring quantity of discharge of gas included in coal |
| CN101206211A (en) * | 2007-12-18 | 2008-06-25 | 中国矿业大学 | Method for determining coal ignitability |
-
2012
- 2012-11-28 CN CN201210494810.8A patent/CN102998390B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3716992A1 (en) * | 1987-04-30 | 1988-11-17 | Westfaelische Berggewerkschaft | Method of measuring proportions of combustible gas of low concentration in mine air |
| RU2088634C1 (en) * | 1992-06-22 | 1997-08-27 | Товарищество с ограниченной ответственностью "Уральская компания предпринимателей" | Method of determining optimal composition of coal charge for coking process |
| JP2004317260A (en) * | 2003-04-15 | 2004-11-11 | Kansai Coke & Chem Co Ltd | Method for measuring quantity of discharge of gas included in coal |
| CN101206211A (en) * | 2007-12-18 | 2008-06-25 | 中国矿业大学 | Method for determining coal ignitability |
Non-Patent Citations (3)
| Title |
|---|
| XING FAN ET AL.: "Application of gas chromatography/mass spectrometry in studies on separation and identification of organic species in coals", 《FUEL》, vol. 109, 25 September 2012 (2012-09-25) * |
| 张月琴 等: "气相色谱法测定煤层瓦斯中低浓度氢气和氦气", 《岩矿测试》, vol. 24, no. 4, 31 December 2005 (2005-12-31) * |
| 张朝青 等: "气相色谱法检测煤层气成分", 《广东化工》, vol. 39, no. 12, 30 September 2012 (2012-09-30) * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104880543A (en) * | 2015-06-16 | 2015-09-02 | 西安科技大学 | Experiment device and method for underground coal mine CO source mechanism and disappearing mechanism research |
| CN105181165A (en) * | 2015-10-27 | 2015-12-23 | 河南理工大学 | Device system for testing CO release and temperature change in coal incising process |
| CN105181165B (en) * | 2015-10-27 | 2018-04-03 | 河南理工大学 | It is a kind of to test incising coal seam process CO releases and the apparatus system of temperature change |
| CN106769641A (en) * | 2016-12-16 | 2017-05-31 | 华北理工大学 | The vacuum breaking detection means of coal containing CO |
| CN110208421A (en) * | 2019-01-31 | 2019-09-06 | 煤科集团沈阳研究院有限公司 | It is a kind of for measuring the device of hydrogen sulfide content in coal body |
| CN111097347A (en) * | 2020-01-13 | 2020-05-05 | 厦门大学 | Gas replacement and introduction synthesis reaction device |
| CN111097347B (en) * | 2020-01-13 | 2024-03-15 | 光炁钧宏(厦门)科技服务有限公司 | Synthetic reaction device for gas replacement and ventilation |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102998390B (en) | 2014-04-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102998390B (en) | Method for analyzing carbon monoxide gas in coal under anaerobic condition | |
| Singh et al. | Mine fire gas indices and their application to Indian underground coal mine fires | |
| Denkevits | Explosibility of hydrogen–graphite dust hybrid mixtures | |
| CN109001417A (en) | A kind of getting working face operation process dust analysis mode pilot system | |
| CN202837049U (en) | Multi-probe sampling smoke and gas detecting system | |
| CN202083635U (en) | Gas analyzer for petroleum and gas | |
| CN102914456A (en) | Oil gas concentration sampling detection device, use method and application thereof | |
| Zhu et al. | Study on primal CO gas generation and emission of coal seam | |
| Liu et al. | A study of the characteristics of gaseous and solid residues after coal dust explosions | |
| CN104181199A (en) | Ignition energy variable completely-transparent pipeline gas explosion experiment platform and method | |
| CN103076363A (en) | Method for determining critical pressure range for explosive decomposition of pressure sensitive gas | |
| CN105221181A (en) | Gas testing device under a kind of multifunctional well | |
| CN209784287U (en) | Device for measuring carbon monoxide generation rate in closed space under coal normal temperature condition | |
| Ma et al. | Effect of flammable gases produced from spontaneous smoldering combustion of coal on methane explosion in coal mines | |
| CN208999286U (en) | A kind of friction spark igniting gas test device | |
| CN102798781B (en) | Thermal shock test system | |
| CN202339619U (en) | Gas distribution detection system | |
| CN114295675A (en) | Device and method for evaluating explosion risk of sulfide mineral dust | |
| Nie et al. | Experimental analysis on gas and solid residues of pre-and post-explosion coal dust | |
| CN102937605A (en) | Pressure-sensitive explosion test device | |
| Timko et al. | Methods to determine the status of mine atmospheres-an overview | |
| CN101788468A (en) | Method for detecting toxic gases generated by high-energy gas fracture | |
| Huangfu et al. | Effects of oxygen concentrations and heating rates on non-isothermal combustion properties of jet coal in East China | |
| CN103738607A (en) | Safety protection device of center-inerting pipe type coal storage silo | |
| Wang et al. | Spontaneous combustion of coal |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140402 Termination date: 20211128 |