CN108414629A - Coal Self-ignition Process discharges the class test device of P-CO/ON-CO/OT-CO gases - Google Patents
Coal Self-ignition Process discharges the class test device of P-CO/ON-CO/OT-CO gases Download PDFInfo
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- CN108414629A CN108414629A CN201810086846.XA CN201810086846A CN108414629A CN 108414629 A CN108414629 A CN 108414629A CN 201810086846 A CN201810086846 A CN 201810086846A CN 108414629 A CN108414629 A CN 108414629A
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- G—PHYSICS
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
- G01K7/02—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using thermoelectric elements, e.g. thermocouples
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Abstract
The invention discloses Coal Self-ignition Process to discharge P CO/ON CO/OT CO gases（Note：P CO --- pyrolysis CO gases, ON CO --- normal temperature oxidation CO gases, OT CO --- heating and oxidation CO gases, similarly hereinafter）Class test device, including gas configuration system, vacuum flush system, coal reaction system, data processing and inversion system；The gas configuration system includes air compressor machine regulating device, nitrogen making machine, pressure gauge, mass flowmenter, three-way pipe, gas piping and pressure reducing valve；Vacuum flush system includes vacuum pump, vacuum meter, stainless steel capillary and valve；Coal reaction system includes constant temperature heating control cabinet（Can coal sample be carried out to room temperature and temperature programming is handled）, mass flowmenter, dust removal and filtration controller and coal sample tank；Data processing and inversion system includes temperature thermocouple, gas chromatography-mass spectrometry and computer.The present apparatus can test the initial temperature and Conduce Disciplinarian that P CO gases under noble gas atmosphere generate respectively, the initial temperature and Conduce Disciplinarian that ON CO/OT CO are generated under coal normal temperature oxidation and heating and oxidation situation under different oxysome fraction atmosphere.
Description
Technical field
The present invention relates to the class test devices that Coal Self-ignition Process discharges P-CO/ON-CO/OT-CO gases.
Background technology
Coal is still the main energy sources in China at present, however is still had perhaps about coal mining and safe coal management
More shortcomings since China's geological conditions is special, construct comparative development, in terms of coal spontaneous combustion especially in terms of coal spontaneous combustion
Research and analysis still lack a large amount of theoretical foundation and field data, be subject to early stage production technique fall behind, spontaneous combustion of coal seam hair
Fire still occupies ratio larger in current coal mining accident.Early in 17 beginnings of the century, a large amount of scholars just carry out coal spontaneous combustion mechanism
More in-depth study, especially for the toxic and harmful gas discharged in Coal Self-ignition Process, it is proposed that the more test side of system
Method.But since the essential complicated and structure of coal is changeable, people cannot still illustrate completely so far understands gas in Coal Self-ignition Process
Generation and changing rule, therefore be current prevention Mine Fire about the effective identification and analysis for discharging gas in Coal Self-ignition Process
The very urgent problem of calamity.
For current coal spontaneous combustion causes of spontaneous combustion with formed rule, numerous studies personnel in order to deeply and carefully analyze coal from
The gas generated in the process is fired, field research and analysis have been carried out to China various regions coal mine.The study found that specific to CO gases
Sensibility, the easily features such as inspection property and regularity can be widely used as the gas marker of prediction coal spontaneous combustion.However from recent scene
It obtains CO occur in coal mining process in observation transfiniting but there is no there is a situation where coal spontaneous combustions.Domestic and foreign scholars are different for CO gases
Normal overrun issues consider from its cause and hosting pattern etc. proposes query to the source problem that comes of CO gases.However it closes
Lack the problems such as the production quantity and its changing rule of CO gases under different operating modes and further inquires into.
The measure that major part mine processing CO gas overrun conditions are taken at present only rests on the layer for reducing CO gas concentrations
On face, there is no accurately being analyzed with changing rule yield of the CO gases under different atmosphere, field observation is arrived
CO gas concentrations, be the synthesis result for the CO for containing separate sources.But these distracters can be to coal spontaneous combustion Exact Forecast
Generate a degree of influence.Therefore yield and its changing rule of the scientific and effective Analysis for CO gas in Coal Self-ignition Process
It is imperative.
In conclusion how to study and distinguish the CO gases generated under different atmosphere, carried for the accurate prediction of coal spontaneous combustion early stage
For reliable basis, become one of the main bugbear of Gonna breakthrough at this stage.The present inventor's designed, designed one kind regarding to the issue above
Coal Self-ignition Process discharges the class test device of P-CO/ON-CO/OT-CO gases.
Invention content
A kind of class test device of Coal Self-ignition Process release P-CO/ON-CO/OT-CO gases of designed, designed of the present invention,
Purpose is to analyze the production quantity and its changing rule of CO gases under various circumstances.In all cases by research CO
Yield, accurately predicts whether CO gases in mine transfinite, and is that the comprehensive treatment of CO gases and CO predict facing for coal spontaneous combustion
Boundary's index correction model provides reliable basis.The experimental provision of the present invention is easy to operation, simple and reliable.
The present invention provides technical solution below：
The class test device of Coal Self-ignition Process release P-CO/ON-CO/OT-CO gases includes gas configuration system, at vacuum
Reason system, coal reaction system, data processing and inversion system；The gas configuration system includes air compressor machine regulating device, system
Nitrogen machine, pressure gauge, mass flowmenter, three-way pipe, gas piping and pressure reducing valve；Vacuum flush system include vacuum pump, vacuum meter,
Stainless steel capillary and valve；Coal reaction system includes constant temperature heating control cabinet, mass flowmenter, dust removal and filtration controller and coal
Sample tank；Data processing and inversion system includes temperature thermocouple, gas chromatograph-mass spectrometer (GC-MS) and computer.By coal sample tank
It is positioned over constant temperature heating control cabinet, and is connected with into escape pipe, temperature thermocouple, dust removal and filtration controller, is then taken out
It is vacuum-treated, avoids the interference of primary preservation CO gases.
The nitrogen making machine can provide high purity N2(concentration 99.999%), under real simulation noble gas atmosphere pyrolysis of coal generate
The yield and Conduce Disciplinarian of CO gases provide comparison foundation for follow-up normal temperature oxidation and heating and oxidation.
The constant temperature heating control cabinet can control temperature elevating range and heating rate, and can be realized to laying out apparatus complete
Covering heating.Mass flowmenter monitors gas flow in real time, it is ensured that the authenticity and reliability of artificial ground.
The gas chromatograph-mass spectrometer (GC-MS) is connected with temperature thermocouple and vent line, can intuitively observe CO
Gas generate initial temperature, volume fraction and mass fraction, by with computer unicom, in real time monitor coal sample tank in sample temperature
The variation of degree.
The present invention has the advantages that following several：
1. apparatus of the present invention can test out the initial temperature and correspondence that P-CO/ON-CO/OT-CO gases generate under different atmosphere
Volume fraction.
2. apparatus of the present invention are easy to operate, test data is reliably accurate.
3. apparatus of the present invention can predict that the critical indicator correction model of coal spontaneous combustion provides for the comprehensive treatment of CO gases and CO
Authentic data.
Description of the drawings
Fig. 1 is the test device structural schematic diagram of the coal spontaneous combustion release P-CO/ON-CO/OT-CO gases of apparatus of the present invention.
Fig. 2 is to implement P-CO change law of gas curve graphs under noble gas atmosphere.
Fig. 3 is to implement ON-CO change law of gas curve graphs under 20% oxysome fraction.
Fig. 4 is to implement P-CO and heating and oxidation CO (OT-CO) change law of gas fitted figure under 20% oxysome fraction.
Fig. 5 is to implement OT-CO change law of gas curve graphs under 20% oxysome fraction.
Specific implementation mode
The present invention is made below in conjunction with the accompanying drawings, explanation is expanded on further.
Experimentation is as follows：
1) under the temperature programming of noble gas atmosphere P-CO gases test experiments
The seal of first check device, then takes coal sample to be placed in coal sample tank before experiment, and sealing places and temperature is made to be in constant temperature
30℃；Valve 1,2,3,5 is closed, valve 4 is opened, vacuumize process is carried out to coal sample tank with vacuum pump, is deaerated 30 minutes, by coal
The juvenile gas of preservation is fully desorbed in sample；Then valve 2,3,5 is opened, valve 4 is closed and starts to be passed through high pure nitrogen, and set
The heating rate and temperature elevating range for setting constant temperature heating control cabinet open gas chromatograph-mass spectrometer (GC-MS), and monitoring in real time generates P-CO
The initial temperature (see Fig. 2) that gas generates and volume fraction situation of change (being shown in Table 1).
The initial temperature that 1 P-CO gases of table generate and initial volume score
2) test experiments of ON-CO gases under different oxysome fraction operating modes are simulated
Pre-treatment program is tested with (1), closes valve 2, valve 1 is opened and adjusts air compressor machine, simulate different oxysome fraction operating modes
Lower ON-CO gas productions, using 10% and 20% oxysome fraction as embodiment, setting constant temperature heats up to be controlled patent of the present invention
Case keeps 30 DEG C of constant temperature, setting air flow to simulate coal sample normal temperature oxidation, pass through gas chromatograph-mass spectrometer (GC-MS) and computer
Record CO gases generate temperature and volume fraction (being shown in Table 2) in real time for interconnection.Embodiment described in the invention is only therein
The test experiments under a variety of oxysome fraction operating modes may be implemented by different distribution ratios for a part (see Fig. 3).
The initial temperature that 2 ON-CO gases of table generate and initial volume score
3) test experiments of OT-CO gases under different oxysome fraction operating modes are simulated
Starting experimental step adjusts air compressor machine simulation with (2) air atmosphere and constant temperature heating control cabinet control heating is arranged with (1)
Range and heating rate are consistent with (1), real simulation coal spontaneous combustion temperature-rise period, are recorded CO gases in real time and are generated temperature and body
Fraction (is shown in Table 3).The CO generated during this is the summation (see Fig. 4) of P-CO and OT-CO gases, is calculating stage CO
It is noted that the CO gas generating amounts of record and P-CO gases are done difference when gas generated, final OT-CO gases are obtained
Yield (see Fig. 5).
The initial temperature that 3 OT-CO gases of table generate and initial volume score
Apparatus of the present invention can test the gas content and its Conduce Disciplinarian of P-CO/ON-CO/OT-CO gases respectively, and
CO change law of gas in Accurate Analysis Coal Self-ignition Process under different oxysome fractions.
The present invention can accurately simulate the form that underground CO gases are likely to occur, and analyze P-CO/ON-CO/OT- in real time
The initial temperature and Conduce Disciplinarian that CO is generated are that the comprehensive treatment of CO gases and CO predict that the critical indicator of coal spontaneous combustion corrects mould
Type provides reliable basis, makes accurate prediction to CO gas anomalies and spontaneous combustion of coal in time.
Claims (7)
1. Coal Self-ignition Process discharges the class test device of P-CO/ON-CO/OT-CO gases, including gas configuration system, vacuum
Processing system, coal reaction system, data processing and inversion system；It is characterized in that, the gas configuration system includes pneumatics
Machine regulating device, nitrogen making machine, pressure gauge, mass flowmenter, three-way pipe, gas piping and pressure reducing valve；Vacuum flush system includes
Vacuum pump, vacuum meter, stainless steel capillary and valve；Coal reaction system includes constant temperature heating control cabinet（Coal sample can be carried out normal
Mild temperature programming processing）, mass flowmenter, dust removal and filtration controller and coal sample tank；Data processing and inversion system includes surveying
Warm galvanic couple, gas chromatograph-mass spectrometer (GC-MS) and computer；It is characterized in that, testing pyrolysis of coal, normal temperature oxidation and liter respectively
The gas content and its Conduce Disciplinarian of temperature oxidation CO is the critical indicator amendment of comprehensive treatment and the CO prediction coal spontaneous combustions of CO gases
Model provides foundation.
2. the class test device of P-CO/ON-CO/OT-CO gases is discharged according to Coal Self-ignition Process described in claims 1,
It is characterized in that, the air compressor machine, nitrogen making machine are connect by stainless steel ferrule fitting threeway with mass flowmenter, are coal reaction system
System provides high-purity N2Gas simultaneously simulates the air atmosphere under different oxysome fractions.
3. the class test device of P-CO/ON-CO/OT-CO gases is discharged according to Coal Self-ignition Process described in claims 1,
It is characterized in that, the vacuum treatment installation is mutually connected by vacuum pump with vacuum meter and valve.
4. the class test device of P-CO/ON-CO/OT-CO gases is discharged according to Coal Self-ignition Process described in claims 1,
It is characterized in that, temperature can be adjusted to 500 DEG C by the constant temperature heating control cabinet equipped with mass flowmenter from 30 DEG C, and be controlled
Its heating rate is made, monitors gas flow in real time.
5. the class test device of P-CO/ON-CO/OT-CO gases is discharged according to Coal Self-ignition Process described in claims 1,
It is characterized in that, the dust removal and filtration controller can be filtered the flue gas and coal dust of generation, keep experimental result more abundant
Reliably.
6. the class test device of P-CO/ON-CO/OT-CO gases is discharged according to Coal Self-ignition Process described in claims 1,
It is characterized in that, the vent line is stainless steel capillary, has good flexibility, heat-resisting quantity and corrosion resistance.
7. the class test device of P-CO/ON-CO/OT-CO gases is discharged according to Coal Self-ignition Process described in claims 1,
It is characterized in that, ranging from 30 DEG C to 500 DEG C of the temperature test of the gas chromatograph-mass spectrometer (GC-MS), the device and thermometric heat
Galvanic couple is connected with vent line, can monitor gas temperature, gas componant, gas volume fraction and mass fraction in real time.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810086846.XA CN108414629A (en) | 2018-01-30 | 2018-01-30 | Coal Self-ignition Process discharges the class test device of P-CO/ON-CO/OT-CO gases |
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| CN201810086846.XA CN108414629A (en) | 2018-01-30 | 2018-01-30 | Coal Self-ignition Process discharges the class test device of P-CO/ON-CO/OT-CO gases |
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| CN201810086846.XA Pending CN108414629A (en) | 2018-01-30 | 2018-01-30 | Coal Self-ignition Process discharges the class test device of P-CO/ON-CO/OT-CO gases |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107192794A (en) * | 2017-06-15 | 2017-09-22 | 河南理工大学 | A kind of device of underground coal mine CO sources identification |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107192794A (en) * | 2017-06-15 | 2017-09-22 | 河南理工大学 | A kind of device of underground coal mine CO sources identification |
Non-Patent Citations (6)
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| 余明高 等: "不同自燃倾向性煤自燃氧化特性试验研究" * |
| 周清清 等: "煤自燃倾向性测试方法研究进展" * |
| 张剑辉 等: "煤加水成生H2S气体模拟研究" * |
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