CN108387686A - Coal adsorbs Y-CO and desorbs the comprehensive test device of YJ-CO/YS-CO gases - Google Patents
Coal adsorbs Y-CO and desorbs the comprehensive test device of YJ-CO/YS-CO gases Download PDFInfo
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- CN108387686A CN108387686A CN201810086828.1A CN201810086828A CN108387686A CN 108387686 A CN108387686 A CN 108387686A CN 201810086828 A CN201810086828 A CN 201810086828A CN 108387686 A CN108387686 A CN 108387686A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0027—General constructional details of gas analysers, e.g. portable test equipment concerning the detector
- G01N33/0036—Specially adapted to detect a particular component
- G01N33/004—Specially adapted to detect a particular component for CO, CO2
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/22—Fuels, explosives
- G01N33/222—Solid fuels, e.g. coal
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N7/00—Analysing materials by measuring the pressure or volume of a gas or vapour
- G01N7/02—Analysing materials by measuring the pressure or volume of a gas or vapour by absorption, adsorption, or combustion of components and measurement of the change in pressure or volume of the remainder
- G01N7/04—Analysing materials by measuring the pressure or volume of a gas or vapour by absorption, adsorption, or combustion of components and measurement of the change in pressure or volume of the remainder by absorption or adsorption alone
Abstract
The present invention relates to coal absorption Y CO and the comprehensive test device for desorbing YJ CO/YS CO gases (to note：Y CO --- primary CO gases；YJ CO --- depressurization desorption CO gases；YS CO --- heating desorption CO gases, P CO --- heating pyrolysis CO gases, similarly hereinafter), including gas supply system (high pressure N2Gas cylinder, high pressure CO gas cylinder, pressure gauge, control valve, gas piping, air accumulator, mass flowmenter), vacuum desorption system (vacuum pump, vacuum meter, gas piping and valve), adsorption-desorption depressurization desorption device (self-control desorption instrument), adsorption/desorption constant temperature heat riser (coal sample tank, temperature programming device), data acquisition and on-line analysis system (temperature thermocouple, pressure gauge, online CO gas analyzers and data collection analysis computer).The present invention can be achieved coal and adsorb Y CO, desorb the class test of YJ CO and YS CO gases, make research the primary CO of coal spontaneous combustion is gas generated and Conduce Disciplinarian on operation simplicity, operability is strong and reliable test result.
Description
Technical field
The invention belongs to coal spontaneous combustion early prediction electric powder predictions, are related to coal absorption Y-CO and desorption YJ-CO/YS-CO
The comprehensive test device of gas.
Background technology
The method that most widely used prediction coal spontaneous is under fire both at home and abroad at present is index gas method, CO gases by
It is common and effective coal spontaneous combustion early prediction forecasting index in having many characteristics, such as that high sensitivity, production quantity are big and be easy to detection
Gas.But often to will appear CO in normal recovery process, in stope upper corner or goaf dense for coal in China mine
Degree has been more than China《Safety regulations in coal mine》Defined 24 ppm but coal not auto-ignition, these sources CO be largely due to
Coal body oxidation generates, but also some coal mines CO may be from ocurrence of coal seam, this part CO may be desorbed in recovery process
To enter in stope space.The CO of the CO or coal body desorption that no matter come from the generation of coal body autoxidation can pacify to mine
Full production brings certain influence, therefore, the research of YJ-CO/YS-CO gas characteristics is adsorbed and desorbed to coal, to understanding coal body
Absorption and adsorption law and instruct mine safety production important in inhibiting.
Based on above-mentioned present situation, design construction coal absorption Y-CO and the comprehensive test device for desorbing YJ-CO/YS-CO gases.
Coal absorption Y-CO and desorption YJ-CO/YS-CO gas rules are analyzed, foundation is provided to improve index gas prediction precision.
Invention content
The technical problem to be solved by the present invention is in view of the deficiencies of the prior art, provide coal absorption Y-CO and desorption
The comprehensive test device of YJ-CO/YS-CO gases.
To solve above insufficient, the present invention is to realize by the following technical solutions：Coal adsorbs Y-CO and desorption YJ-
The comprehensive test device of CO/YS-CO gases.Including gas supply system, vacuum desorption system, desorption system（Adsorption-desorption drops
Press desorption apparatus and adsorption/desorption constant temperature heat riser）And data acquire and on-line analysis system, wherein temperature thermocouple
It is arranged in coal sample tank, is connect with adsorption/desorption constant temperature heat riser, gas supply system, vacuum desorption system and constant temperature liter
Coal sample canister incoming gas end connects in warm device, in parallel there are three branch on the left of coal sample canister incoming gas end, the first branch and high pressure CO gas cylinder,
Air accumulator connects, the second branch and high pressure N2Gas cylinder, mass flowmenter connection, third branch are connect with vacuum pump, the first branch,
The second branch and third branch road are both provided with valve, and self-control desorption instrument is connect with coal sample tank outlet side in constant temperature heat riser,
It is separately connected with the two opposite ends mouth of three-way connection and inhales coal sample tank outlet side and online CO gas analyses in constant temperature heat riser
Instrument, another port are connected with desorption instrument and online CO gas analyzers, and online CO gas analyzers are connected with computer.
The air accumulator acts on：Carbon Monoxide Gaseous is filled in air accumulator, using pressure gauge, measures CO in air accumulator
Content quantitatively determines CO adsorbances under coal sample tank adsorption equilibrium pressure with Langmuir mono molecule layer adsorptions.
The coal sample tank is airtight cavity, and bottom is set with air inlet port, and top is set with air outlet and survey respectively
Wen Kong is convenient for gas circuit unicom and the installation of TC.Coal sample is placed in coal sample chamber body by stainless steel mesh away from bottom 2cm
Place exports or is reacted convenient for gas.
The adsorption/desorption constant temperature heat riser, can be realized simultaneously heating and temperature incubation function, can be made by adjusting
Coal sample tank keeps temperature constant state, can also realize and is evenly heated to coal sample tank.It can by the connection with temperature thermocouple in coal sample tank
Temperature data is preserved with realization, is handled, while can show microcomputer controller by number, is timed, to
Accurate effective temperature control.
The self-control desorption instrument includes conduit, sink, gauge line, exhaust tube, red saturated nacl aqueous solution, 3 to rotation
Rotary valve etc., one end of conduit is connect with three-way connection another port, the other end is extend into inside gauge line.Sink is full of red full
And sodium chloride solution, institute's gauge line to be used is pumped full into red saturated nacl aqueous solution using exhaust tube, using 3 to rotary valve
Control gas output, the gauge line to be used to select.This self-control desorption instrument is simple to operate, is easy to read data.
The present invention realizes coal absorption Y-CO and the comprehensive of desorption YJ-CO/YS-CO gases under the control of different valves and surveys
Examination, the present invention is easy to operate, and operability is strong, reliable test result.
Description of the drawings
Fig. 1 is that coal adsorbs Y-CO and desorbs the schematic device of YJ-CO/YS-CO gases.
Fig. 2 is the accumulation desorption quantity of coal depressurization desorption YJ-CO.
Fig. 3 is that the heating after deducting P-CO in temperature-rise period desorbs YS-CO release profiles.
Specific implementation mode
（1）The adsorption experiment of coal sample at normal temperatures
The drying coal sample 50g that will be handled well, is fitted into coal sample tank, then coal sample tank is placed in constant temperature heat riser, determine close
Seal it is intact after, make constant temperature heat riser by coal sample tank keep 30 DEG C of constant temperature after, open valve 5（All valves are to close before experiment
Closed state）Vacuum desorption is carried out with vacuum pump 20 minutes, and valve 5 is closed after so that the gas of original preservation in coal sample is fully desorbed.
Valve 1 is opened, a certain amount of CO is filled with into air accumulator, record pressure A indicates number, measures CO volumes in air accumulator.Close valve
Door 1 opens valve 2,3, is filled with or releases the CO of certain volume into coal sample tank, closing valve 2,3, recording manometer B registrations,
PB1=0.84 MPa stands observation, is balanced up to coal sample reaches Dynamic Adsorption, again recording manometer B registrations, PB2=0.78
MPa, coal sample tank and associated ping volume calibration are V=683ml.Can be calculated CO absorption gas flow in coal is 0.016 mol.
（2）The YJ-CO experiments of coal sample at normal temperatures
The coal sample for being up to adsorption equilibrium does YJ-CO experiments, and it is molten that desorption instrument the first two gauge line is pumped full red saturated sodium-chloride
Liquid（Second gauge line gives over to spare）.Valve 8 is opened, is opening while observing pressure gauge registration, it is rapid in pressure gauge registration B
Valve 8 is closed when being reduced to 0 rapidly, valve 6 is opened and opens simultaneously first 3 to rotary valve, measured and be depressured by draining water gathering of gas law
The YJ-CO amounts of desorption.Average to read gauge line registration every 5s, 10s, 30s, 1min, 5min, pipe registration to be batched no longer changes
Valve 6 is closed afterwards, and the accumulation desorption quantity of coal depressurization desorption YJ-CO is shown in Fig. 2.
（3）YS-CO experiments containing primary Y-CO coal samples under nitrogen atmosphere
By the coal sample after YJ-CO（Containing primary Y-CO coal samples）YS-CO experiments are done, valve 3,4,7 is opened, is passed through high-purity N2Gas,
Gas velocity is set by mass flowmenter, sets temperature program range and heating rate, opens cavity temperature measurement system and online
Formula CO gas analyzers, the content that the CO contents obtained at this time are pyrolysis P-CO and primary preservation Y-CO gases are total, remove P-CO
（With raw coal sample, temperature programming obtains P-CO under nitrogen atmosphere）, the as content of YS-CO（See Fig. 3 heating desorption YS-CO releases
Curve）.
Claims (8)
1. coal adsorbs Y-CO and desorbs the comprehensive test device of YJ-CO/YS-CO gases, which is characterized in that supply system including gas
System, vacuum desorption system, desorption system（Adsorption-desorption depressurization desorption device and adsorption/desorption constant temperature heat riser）And data
Acquisition and on-line analysis system, wherein temperature thermocouple is arranged in coal sample tank, is connect with adsorption/desorption constant temperature heat riser,
Gas supply system, vacuum desorption system are connect with coal sample canister incoming gas end in constant temperature heat riser, on the left of coal sample canister incoming gas end simultaneously
There are three branch, the first branchs to be connect with high pressure CO gas cylinder, air accumulator for connection, the second branch and high pressure N2Gas cylinder, mass flowmenter
Connection, third branch are connect with vacuum pump, and the first branch, the second branch and third branch road are both provided with valve, self-control desorption
Instrument is connect with coal sample tank outlet side in constant temperature heat riser, is separately connected with the two opposite ends mouth of three-way connection and is inhaled constant temperature heating dress
Interior coal sample tank outlet side and online CO gas analyzers are set, another port is connected with desorption instrument and online CO gas analyses
Instrument, online CO gas analyzers are connected with computer.
2. according to the comprehensive test device of coal absorption Y-CO and desorption YJ-CO/YS-CO gases described in claims 1, feature
It is, the high pressure CO gas cylinder is 99.99% high-purity CO gases, high pressure N2Bottle is 99.99% high-purity N2Gas.
3. according to the comprehensive test device of coal absorption Y-CO and desorption YJ-CO/YS-CO gases described in claims 1, feature
It is, pressure reducing valve, pressure maintaining valve, control valve is connected in turn between the high pressure CO gas and gas circuit pipeline；The high pressure
N2It is connected with pressure reducing valve, pressure maintaining valve, control valve and mass flowmenter between gas and gas circuit pipeline in turn.
4. according to the comprehensive test device of coal absorption Y-CO and desorption YJ-CO/YS-CO gases described in claims 1, feature
It is, the coal sample tank is high pressure resistant high temperature stainless steel cylindrical tank, is connected using three on the outside of coal sample tank inlet, outlet end
Head connection, and convenient for gas output or reacted in coal sample chamber body away from stainless steel mesh is disposed at the 2cm of bottom；Air accumulator
Origin pressure, the contradiction for the gas consumption being likely to occur in solution system can be stablized.
5. according to the comprehensive test device of coal absorption Y-CO and desorption YJ-CO/YS-CO gases described in claims 1, feature
It is, the adsorption/desorption constant temperature heat riser not only can be used for the constant temperature desorption to coal sample tank but also can be used for coal sample
The heating of tank desorbs, and constant temperature heat riser temperature regulating range is room temperature to 500 DEG C, and heating rate is adjusted and realizes to coal
The real-time paperless tests function of temperature of sample tank.
6. according to the comprehensive test device of coal absorption Y-CO and desorption YJ-CO/YS-CO gases described in claims 1, feature
It is, the thermocouple is stainless steel hot galvanic couple, is arranged in above coal sample tank, is heated up by lead and adsorption/desorption constant temperature
Device connects.
7. according to the comprehensive test device of coal absorption Y-CO and desorption YJ-CO/YS-CO gases described in claims 1, feature
It is, the self-control desorption instrument includes conduit, sink, gauge line, exhaust tube, red saturated nacl aqueous solution, 3 to rotary valve
Deng one end of conduit is connect with three-way connection another port, the other end is extend into inside gauge line, and equipment operation is simple, is easy to
Read data.
8. according to the comprehensive test device of coal absorption Y-CO and desorption YJ-CO/YS-CO gases described in claims 1, feature
It is, the online CO gas analyzers are connect with coal sample tank outlet side and computer respectively, convenient for monitoring in real time.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810086828.1A CN108387686A (en) | 2018-01-30 | 2018-01-30 | Coal adsorbs Y-CO and desorbs the comprehensive test device of YJ-CO/YS-CO gases |
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| CN201810086828.1A CN108387686A (en) | 2018-01-30 | 2018-01-30 | Coal adsorbs Y-CO and desorbs the comprehensive test device of YJ-CO/YS-CO gases |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108982173A (en) * | 2018-08-27 | 2018-12-11 | 武汉理工大学 | Gas sampling analysis system and its method |
| CN109459343A (en) * | 2018-12-25 | 2019-03-12 | 西安科技大学 | A kind of experimental teaching unit of coal seam gas-bearing capacity test |
| CN110108696A (en) * | 2019-06-20 | 2019-08-09 | 河南理工大学 | Online constant temperature transformation and constant pressure alternating temperature coal Raman spectroscopy test device and method |
| CN110146425A (en) * | 2019-05-16 | 2019-08-20 | 中国地质大学（武汉） | A kind of quantitative assessment experimental provision of shale High Pressure Absorption gas componant |
| CN110987719A (en) * | 2019-12-26 | 2020-04-10 | 辽宁工程技术大学 | Coal adsorbs flue gas process simulation experiment system of power plant |
| CN111773876A (en) * | 2020-06-16 | 2020-10-16 | 浙江师范大学 | Precise gas adsorption system for temperature programmed desorption |
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| 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 (4)
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| CN202562897U (en) * | 2012-05-29 | 2012-11-28 | 西安科技大学 | Multi-component gas absorption/desorption integrated experimental device for outsized coal sample |
| CN104849300A (en) * | 2015-05-30 | 2015-08-19 | 西安科技大学 | Experiment table for researching influences of coal body gas content to coal spontaneous combustion characteristics and application method of experiment table |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108982173A (en) * | 2018-08-27 | 2018-12-11 | 武汉理工大学 | Gas sampling analysis system and its method |
| CN109459343A (en) * | 2018-12-25 | 2019-03-12 | 西安科技大学 | A kind of experimental teaching unit of coal seam gas-bearing capacity test |
| CN110146425A (en) * | 2019-05-16 | 2019-08-20 | 中国地质大学（武汉） | A kind of quantitative assessment experimental provision of shale High Pressure Absorption gas componant |
| CN110108696A (en) * | 2019-06-20 | 2019-08-09 | 河南理工大学 | Online constant temperature transformation and constant pressure alternating temperature coal Raman spectroscopy test device and method |
| CN110987719A (en) * | 2019-12-26 | 2020-04-10 | 辽宁工程技术大学 | Coal adsorbs flue gas process simulation experiment system of power plant |
| CN111773876A (en) * | 2020-06-16 | 2020-10-16 | 浙江师范大学 | Precise gas adsorption system for temperature programmed desorption |
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