CN208366936U - Coal adsorbs Y-CO and desorbs the test macro of YJ-CO/YS-CO gas - Google Patents
Coal adsorbs Y-CO and desorbs the test macro of YJ-CO/YS-CO gas Download PDFInfo
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- CN208366936U CN208366936U CN201820154209.7U CN201820154209U CN208366936U CN 208366936 U CN208366936 U CN 208366936U CN 201820154209 U CN201820154209 U CN 201820154209U CN 208366936 U CN208366936 U CN 208366936U
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- desorption
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- coal sample
- constant temperature
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Abstract
The utility model relates to coal absorption Y-CO and test macro (note: Y-CO --- the primary CO gases of desorption YJ-CO/YS-CO gas；YJ-CO --- depressurization desorption CO gas；YS-CO --- heating desorption CO gas, P-CO --- heating pyrolysis CO gas, 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 analyzer and data collection analysis computer).Same coal sample may be implemented after to CO gas absorption balance in the present apparatus, carries out depressurization desorption YJ-CO and heating desorption YS-CO to CO, to study, the raw CO in Coal Self-ignition Process Central Plains is gas generated and Conduce Disciplinarian.
Description
Technical field
The utility model belongs to coal spontaneous combustion early prediction electric powder prediction, is related to coal absorption Y-CO and desorption YJ-CO/
The test macro of YS-CO gas.
Background technique
The method that most widely used prediction coal spontaneous is under fire both at home and abroad at present is index gas method, CO gas by
In with high sensitivity, production quantity is big and is easy to detect feature, be common and effective coal spontaneous combustion early prediction forecasting index gas
Body.But coal in China mine often will appear CO concentration in normal recovery process in stope upper corner or goaf
Be more than 24ppm as defined in China " safety regulations in coal mine " but coal auto-ignition, these sources CO are not 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
Into in stope space.CO either from the coal body autoxidation CO generated or coal body desorption can give mine safety
Production brings certain influence, therefore, the research of YJ-CO/YS-CO gas characteristic is adsorbed and desorbed to coal, inhale to coal body is understood
Attached and adsorption law and instruct mine safety production important in inhibiting.
Based on above-mentioned status, design construction coal absorption Y-CO and the test macro for desorbing YJ-CO/YS-CO gas.Analysis
Coal adsorbs Y-CO and desorption YJ-CO/YS-CO gas rule, provides foundation to improve index gas prediction precision.
Utility model content
Technical problem to be solved in the utility model be in view of the deficiencies of the prior art, provide coal absorption Y-CO and
Desorb the test macro of YJ-CO/YS-CO gas.
In order to solve the above deficiencies, the utility model is achieved through the following technical solutions: coal absorption Y-CO and desorption
The test macro of YJ-CO/YS-CO gas.Including gas supply system, vacuum desorption system, desorption system (adsorption-desorption decompression
Desorption apparatus and adsorption/desorption constant temperature heat riser) and data acquire and on-line analysis system, wherein temperature thermocouple cloth
It sets in coal sample tank, is connect with adsorption/desorption constant temperature heat riser, gas supply system, vacuum desorption system and constant temperature heat up
Coal sample canister incoming gas end connects in device, and in parallel on the left of coal sample canister incoming gas end there are three branch, the first branch and high pressure CO gas cylinders, storage
Gas tank connection, second branch and high pressure N2Gas cylinder, mass flowmenter connection, third branch is controlled to a vacuum pump, the first branch, the
Two branches and third branch road are provided with valve, and self-control desorption instrument connect with coal sample tank outlet side in constant temperature heat riser, uses
The two opposite ends mouth of three-way connection, which is separately connected, inhales coal sample tank outlet side and online CO gas analysis in constant temperature heat riser
Instrument, another port are connected with desorption instrument and online CO gas analyzer, and online CO gas analyzer is connected with computer.
The air accumulator effect is: Carbon Monoxide Gaseous being filled in air accumulator, using pressure gauge, measures CO in air accumulator
Content quantitatively determines CO adsorbance under coal sample tank adsorption equilibrium pressure with Langmuir mono molecule layer adsorption.
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 connection 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 be evenly heated to coal sample tank.It can by the connection with temperature thermocouple in coal sample tank
Temperature data is saved with realization, is handled, while can show microcomputer controller by number, be timed, thus smart
Quasi- effective temperature control.
The self-control desorption instrument includes conduit, sink, gauge line, exhaust tube, red saturated sodium chloride solution, 3 to rotation
Rotary valve, 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 saturation
Institute's gauge line to be used is pumped full red saturated sodium chloride solution using exhaust tube by sodium chloride solution, and utilization 3 is to rotary valve control
Gas output processed, to select institute's gauge line to be used.This self-control desorption instrument is simple to operate, is easy to read data.
The utility model realizes the synthesis of coal absorption Y-CO and desorption YJ-CO/YS-CO gas under the control of different valves
Test, the utility model is easy to operate, strong operability, reliable test result.
Detailed description of the invention
Fig. 1 is that coal adsorbs Y-CO and desorbs the system and device schematic diagram of YJ-CO/YS-CO gas
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 embodiment
(1) adsorption experiment of coal sample at normal temperature
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, really
Surely 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(test before all valves it is equal
It is in off state) vacuum desorption is carried out 20 minutes with vacuum pump, valve is closed after the gas of original preservation in coal sample is desorbed sufficiently
Door 5.Valve 1 is opened, a certain amount of CO is filled with into air accumulator, record pressure A indicates number, measures CO volume in air accumulator.It closes
Valve closing door 1 opens valve 2,3, is filled with or releases the CO of certain volume into coal sample tank, closes valve 2,3, recording manometer B
Registration, PB1=0.84 MPa stands observation, balances up to coal sample reaches Dynamic Adsorption, again recording manometer B registration, 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 experiment of coal sample at normal temperature
The coal sample for being up to adsorption equilibrium does YJ-CO experiment, and desorption instrument the first two gauge line is pumped full red saturation chlorination
Sodium solution (second gauge line gives over to spare).Valve 8 is opened, is opening while observing pressure gauge registration, in pressure gauge registration B
Valve 8 is closed when being reduced to 0 rapidly rapidly, valve 6 is opened and opens simultaneously first 3 to rotary valve, measured by draining water gathering of gas law
The YJ-CO amount of depressurization desorption.Average to read gauge line registration every 5s, 10s, 30s, 1min, 5min, pipe registration to be batched is no longer
Valve 6 is closed after variation, the accumulation desorption quantity of coal depressurization desorption YJ-CO is shown in Fig. 2.
(3) the YS-CO experiment containing primary Y-CO coal sample under nitrogen atmosphere
Coal sample (containing primary Y-CO coal sample) after YJ-CO is done into YS-CO experiment, valve 3,4,7 is opened, is passed through high-purity N2
Gas sets gas velocity by mass flowmenter, sets temperature program range and heating rate, open cavity temperature measurement system and
Online CO gas analyzer, the content that the CO content obtained at this time is pyrolysis P-CO and primary preservation Y-CO gas is total, removes
With raw coal sample, temperature programming obtains P-CO(P-CO under nitrogen atmosphere), as the content of YS-CO (heats up see Fig. 3 and desorbs YS-CO
Release profiles).
Claims (8)
1. coal adsorbs Y-CO and desorbs the test macro of YJ-CO/YS-CO gas, it is characterized in that including gas supply system, vacuum
Desorption system, adsorption-desorption depressurization desorption device and adsorption/desorption constant temperature heat riser composition desorption system, data acquisition with
On-line analysis system, wherein temperature thermocouple is arranged in coal sample tank, is connect with adsorption/desorption constant temperature heat riser, and gas supplies
It answers system, vacuum desorption system to connect with coal sample canister incoming gas end in constant temperature heat riser, is parallel with three on the left of coal sample canister incoming gas end
A branch, the first branch are connect with high pressure CO gas cylinder, air accumulator, second branch and high pressure N2Gas cylinder, mass flowmenter connection, the
Three branches are controlled to a vacuum pump, and the first branch, second branch and third branch road are provided with valve, make desorption instrument and constant temperature by oneself
Coal sample tank outlet side connects in heat riser, is separately connected with the two opposite ends mouth of three-way connection and inhales coal sample in constant temperature heat riser
Tank outlet side and online CO gas analyzer, another port is connected with desorption instrument and online CO gas analyzer, online
CO gas analyzer is connected with computer.
2. the test macro of coal absorption Y-CO and desorption YJ-CO/YS-CO gas according to claim 1, it is characterized in that described
High pressure CO gas cylinder be 99.99% high-purity CO gas, high pressure N2Bottle is 99.99% high-purity N2Gas.
3. the test macro of coal absorption Y-CO and desorption YJ-CO/YS-CO gas according to claim 1, it is characterized in that described
High pressure CO gas and gas circuit pipeline between be connected with pressure reducing valve, pressure maintaining valve, control valve in turn；The high pressure N2Gas is gentle
It is connected with pressure reducing valve, pressure maintaining valve, control valve and mass flowmenter between the pipeline of road in turn.
4. the test macro of coal absorption Y-CO and desorption YJ-CO/YS-CO gas according to claim 1, it is characterized in that described
Coal sample tank, be high pressure resistant high temperature stainless steel cylindrical tank, connected using three-way connection on the outside of coal sample tank inlet, outlet end, and
Away from stainless steel mesh is disposed at the 2cm of bottom in coal sample chamber body, convenient for gas output or react；Air accumulator can have been stablized
Source pressure, the contradiction for the gas consumption being likely to occur in solution system.
5. the test macro of coal absorption Y-CO and desorption YJ-CO/YS-CO gas according to claim 1, it is characterized in that described
Adsorption/desorption constant temperature heat riser not only can be used for the desorption of the constant temperature of coal sample tank but also can be used for the heating solution to coal sample tank
It inhales, constant temperature heat riser temperature regulating range is room temperature to 500 DEG C, and heating rate is adjusted and realizes the temperature to coal sample tank
Real-time paperless tests function.
6. the test macro of coal absorption Y-CO and desorption YJ-CO/YS-CO gas according to claim 1, it is characterized in that described
Thermocouple be stainless steel hot galvanic couple, be arranged in above coal sample tank, connect by lead with adsorption/desorption constant temperature heat riser.
7. the test macro of coal absorption Y-CO and desorption YJ-CO/YS-CO gas according to claim 1, it is characterized in that described
Self-control desorption instrument include conduit, sink, gauge line, exhaust tube, red saturated sodium chloride solution, 3 to rotary valve, the one of conduit
End 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. the test macro of coal absorption Y-CO and desorption YJ-CO/YS-CO gas according to claim 1, it is characterized in that described
Online CO gas analyzer connect respectively with coal sample tank outlet side and computer, be convenient for real-time monitoring.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820154209.7U CN208366936U (en) | 2018-01-30 | 2018-01-30 | Coal adsorbs Y-CO and desorbs the test macro of YJ-CO/YS-CO gas |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820154209.7U CN208366936U (en) | 2018-01-30 | 2018-01-30 | Coal adsorbs Y-CO and desorbs the test macro of YJ-CO/YS-CO gas |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108387686A (en) * | 2018-01-30 | 2018-08-10 | 河南理工大学 | Coal adsorbs Y-CO and desorbs the comprehensive test device of YJ-CO/YS-CO gases |
| CN109696380A (en) * | 2019-03-04 | 2019-04-30 | 大连理工大学 | A kind of method and device for evaluating poromerics gas separating property |
| 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 |
| CN111579583A (en) * | 2020-05-21 | 2020-08-25 | 太原理工大学 | Infrared thermal imaging device for testing coal adsorbed gas |
-
2018
- 2018-01-30 CN CN201820154209.7U patent/CN208366936U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108387686A (en) * | 2018-01-30 | 2018-08-10 | 河南理工大学 | Coal adsorbs Y-CO and desorbs the comprehensive test device of YJ-CO/YS-CO gases |
| CN109696380A (en) * | 2019-03-04 | 2019-04-30 | 大连理工大学 | A kind of method and device for evaluating poromerics gas separating property |
| CN109696380B (en) * | 2019-03-04 | 2021-04-16 | 大连理工大学 | Method and device for evaluating gas separation performance of microporous material |
| 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 |
| CN111579583A (en) * | 2020-05-21 | 2020-08-25 | 太原理工大学 | Infrared thermal imaging device for testing coal adsorbed gas |
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Granted publication date: 20190111 Termination date: 20200130 |