CN110412074A - A kind of multifunctional coal oxidation characteristic experimental provision and its application method - Google Patents

A kind of multifunctional coal oxidation characteristic experimental provision and its application method Download PDF

Info

Publication number
CN110412074A
CN110412074A CN201910699191.8A CN201910699191A CN110412074A CN 110412074 A CN110412074 A CN 110412074A CN 201910699191 A CN201910699191 A CN 201910699191A CN 110412074 A CN110412074 A CN 110412074A
Authority
CN
China
Prior art keywords
coal
fan
threeway
gas
rectifying valve
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.)
Pending
Application number
CN201910699191.8A
Other languages
Chinese (zh)
Inventor
张明乾
李宗翔
刘宇
李腾
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Liaoning Technical University
Original Assignee
Liaoning Technical University
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Liaoning Technical University filed Critical Liaoning Technical University
Priority to CN201910699191.8A priority Critical patent/CN110412074A/en
Publication of CN110412074A publication Critical patent/CN110412074A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N25/00—Investigating or analyzing materials by the use of thermal means
    • G01N25/20—Investigating or analyzing materials by the use of thermal means by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity
    • G01N25/22—Investigating or analyzing materials by the use of thermal means by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity on combustion or catalytic oxidation, e.g. of components of gas mixtures
    • G01N25/28—Investigating or analyzing materials by the use of thermal means by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity on combustion or catalytic oxidation, e.g. of components of gas mixtures the rise in temperature of the gases resulting from combustion being measured directly
    • G01N25/38—Investigating or analyzing materials by the use of thermal means by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity on combustion or catalytic oxidation, e.g. of components of gas mixtures the rise in temperature of the gases resulting from combustion being measured directly using the melting or combustion of a solid
    • G01N25/385—Investigating or analyzing materials by the use of thermal means by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity on combustion or catalytic oxidation, e.g. of components of gas mixtures the rise in temperature of the gases resulting from combustion being measured directly using the melting or combustion of a solid for investigating the composition of gas mixtures
    • 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
    • G01N33/0031—General constructional details of gas analysers, e.g. portable test equipment concerning the detector comprising two or more sensors, e.g. a sensor array

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Medicinal Chemistry (AREA)
  • Food Science & Technology (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Sampling And Sample Adjustment (AREA)

Abstract

The present invention relates to mine safety field of engineering technology, a kind of multifunctional coal oxidation characteristic experimental provision and its application method are provided.The device includes temperature programmed control case, data storage processing unit；Temperature programmed control case includes control area, oxidation of coal workspace, gas cooling circulation gas circuit；Control area includes closed circulation air pump, the first and second gas circuits, the first and second external source gas ports, the first drying tube, the second air inlet pipeline, Bidirectional temperature-controlling switch, data acquisition transmission module, gas sensor room, micro valve, equal dabbing tubule, the second drying tube, the second outlet pipe；Oxidation of coal workspace includes coal sample tank, temperature control module, humidity sensor, pressure sensor, preheating pipeline, the first outlet pipe；It includes flowmeter, flow control valve, the first air inlet pipeline, collection bottle, gas cooling pipe that gas cooling, which recycles gas circuit,.The present invention can complete seven kinds of experiments such as coal spontaneous combustion oxidation heating with a kind of experimental provision, and can be improved conventional efficient and experiment accuracy.

Description

A kind of multifunctional coal oxidation characteristic experimental provision and its application method
Technical field
The present invention relates to mine safety field of engineering technology, more particularly to a kind of multifunctional coal oxidation characteristic experimental provision And its application method.
Background technique
Coal-mine fire is the big important disaster for influencing Safety of Coal Mine Production and smoothly exploiting with restriction coal mine work area.According to The reason of fire occurs can be classified as breeding fire and exogenous fire two major classes.Breeding fire is also known as Conflagration Caused by Coal Self-ignition, is Refer to the coal fire that spontaneous fire generates due to aoxidizing heat production.
Spontaneous combustionof coal seriously affects Safety of Coal Mine Production, threatens human life's safety.About prevention and treatment and research spontaneous combustionof coal Element task in, the experimental work of three kinds of basic indexs measurement need be carried out: first is that the measuring of oxidation of coal feature, i.e., It solves keto consumpting speed and CO of the coal of certain character (granularity, humidity and temperature etc.) under different oxygen concentrations and generates ratio；Second is that surveying Determine Marking Gas of Coal Spontaneous Combustion, that is, measures each gas componant that coal at different temperatures releases；Third is that most short spontaneous fire The oxidation temperature-rise period under natural conditions etc. of the measurement of phase, i.e. measurement coal in certain distinguished and admirable oxygen supply.
The above-mentioned key index that need be measured is studied spontaneous combustionof coal and spontaneous combustion diaster prevention and control engineer application is extremely important.But These indexs are only relied on for the help of spontaneous combustion of coal preventing and controlling or limited, need to aoxidize heating, coal to coal spontaneous combustion Spontaneous combustion gas marker, coal thermal coefficient, the release of coal gas, oxidation of coal water generate rate, coal shortest spontaneous combustion period and coal oxygen Change the experimental study of these index determinings of characteristic gas concentration variation coefficient.Traditional method measurement These parameters are all using not Same instrument carries out measuring work respectively.Wherein, the measurement of the keto consumpting speed about coal under different oxygen concentrations, it is existing Conventional method is that the gas sample of different oxygen concentrations is each led into coal sample tank, is individually tested, and it is dense to make certain oxygen first The gas sample of degree is tested again, and primary experiment can only obtain a kind of keto consumpting speed value of the coal under oxygen concentration, the reality of different oxygen concentrations Gas sample must be reconfigured respectively by testing tests again, and experimental method is cumbersome, low efficiency；It is existing about the measurement of coal gasresolution Conventional method be that a certain amount of coal sample is sealed in coal sample tank under room temperature environment, after a certain period of time, by gas in coal sample tank Body imports in the graduated cylinder for filling with water with a scale, and the volume that water is discharged in graduated cylinder is coal gasresolution amount, and experimental method is cumbersome, efficiency Low, low precision and can not under complete documentation different temperatures environment coal gasresolution dynamic process.Speed is generated about oxidation of coal water Rate and temperature, O2Relationship between concentration is significant on spontaneous combustion of coal influence, rarely has carry out system to this respect at present The experimental facilities and method studied in detail.
Summary of the invention
In view of the problems of the existing technology, the present invention provides a kind of multifunctional coal oxidation characteristic experimental provision and its use Method, can be thermally conductive with a kind of experimental provision completion coal spontaneous combustion oxidation heating experiment, Marking Gas of Coal Spontaneous Combustion test experience, coal Coefficient experiment, coal gas release experiment, oxidation of coal water generate rate experiments, the experiment of coal shortest spontaneous combustion period, oxidation of coal feature This seven kinds experiments of gas concentration variation coefficient measurement experiment, and can be improved conventional efficient and experiment accuracy.
The technical solution of the present invention is as follows:
A kind of multifunctional coal oxidation characteristic experimental provision, it is characterised in that: including temperature programmed control case, data storage processing list Member；Described program temperature-controlled box includes cabinet, control area, oxidation of coal workspace, gas cooling circulation gas circuit, the control area, coal Workspace setting is aoxidized in box house, side outside the enclosure is arranged in the gas cooling circulation gas circuit；
The control area includes closed circulation air pump, the first gas circuit, the second gas circuit, the first external source gas port, the second external source It is gas port, the first drying tube, the second air inlet pipeline, Bidirectional temperature-controlling switch, data acquisition transmission module, gas sensor room, micro- Type valve, equal dabbing tubule, the second drying tube, the second outlet pipe；
The outlet of the closed circulation air pump is connected by the first gas circuit with two ports of the 5th fan threeway rectifying valve, The entrance of the closed circulation air pump is connected with three ports of the 9th fan threeway rectifying valve, the 9th fan threeway rectification Two ports of valve are connected by the second gas circuit with a port of the 5th fan threeway rectifying valve, the 5th fan threeway rectification Three ports of valve are connected with a port of the 6th fan threeway rectifying valve, two ports of the 6th fan threeway rectifying valve with First external source gas port is connected, three ports of the 6th fan threeway rectifying valve and a gas of the 7th fan threeway rectifying valve Mouth is connected, and two ports of the 7th fan threeway rectifying valve are connected with the second external source gas port, the 7th fan three Three ports of logical rectifying valve are connected with the entrance of the first drying tube, and the outlet and the 8th fan threeway of first drying tube are whole One port of stream valve is connected, and two ports of the 8th fan threeway rectifying valve pass through the second air inlet pipeline and the 4th fan three One port of logical rectifying valve is connected；
One port of the 9th fan threeway rectifying valve is connected with the outlet of gas sensor room, the gas sensing Device room is equipped with electronic type gas detecting instrument group, the one end of the gas sensor room through micro valve Yu equal dabbing tubule in inside It is connected, the equal dabbing tubule is connected in the other end with the second drying tube, the entrance and first of the gas sensor room Three ports of fan threeway rectifying valve are connected, two ports of the first fan threeway rectifying valve by the second outlet pipe with One port of the second fan threeway rectifying valve is connected；
The oxidation of coal workspace includes coal sample tank, temperature control module, humidity sensor, pressure sensor, preheating pipeline, the One outlet pipe；The temperature control module is arranged inside oxidation of coal workspace, outside coal sample tank；The coal sample tank includes coal sample tank Upper cover, coal sample tank lower cover, temp probe, heat balls, the coal sample tank upper cover are equipped with coal sample canister incoming gas interface, the coal in inside Sample tank lower cover is equipped with coal sample tank outlet interface in inside, and the heat balls, temp probe are arranged in coal sample tank in coal sample；Institute Three ports for stating the 8th fan threeway rectifying valve are connected with one end of preheating pipeline, the other end and the 4th of the preheating pipeline Two ports of fan threeway rectifying valve are connected, three ports and the coal sample canister incoming gas interface phase of the 4th fan threeway rectifying valve Connection, the coal sample tank outlet interface are connected with one end of humidity sensor, the other end and third of the humidity sensor Two ports of fan threeway rectifying valve are connected, and three ports of the third fan threeway rectifying valve are connected with pressure sensor Logical, a port of the third fan threeway rectifying valve passes through three ports of the first outlet pipe and the second fan threeway rectifying valve It is connected；
Gas cooling circulation gas circuit includes that flowmeter, flow control valve, the first air inlet pipeline, collection bottle, gas are cold But it manages；One end of the gas cooling pipe is connected with two ports of the second fan threeway rectifying valve, the gas cooling pipe The other end is connected with the air inlet of collection bottle, and the gas outlet of the collection bottle is connected with one end of the first air inlet pipeline, institute One end of the other end and flowmeter of stating the first air inlet pipeline is connected to flow control valve, and the flowmeter is in the other end and first One port of fan threeway rectifying valve is connected；
The data line of each electronic type gas detecting instrument in the electronic type gas detecting instrument group, temperature control module, Temp probe, heat balls, humidity sensor, pressure sensor are electrically connected with the input terminal of data acquisition transmission module, described The output end of data acquisition transmission module is electrically connected with the input terminal of data storage processing unit；The electronic type gas detecting instrument The detection control line of each electronic type gas detecting instrument in group, Bidirectional temperature-controlling switch with the output end of data storage processing unit Electrical connection, the temperature control module, heat balls are electrically connected with Bidirectional temperature-controlling switch.
The data storage processing unit is the host computer comprising electronic program needed for oxidation of coal characterization experiments；The temperature control Module is used to carry out the temperature in oxidation of coal workspace record and acquires transmission module by data to be transferred to data store Unit is managed, the temp probe is used to carry out the temperature in coal sample tank record and acquires transmission module by data to be transferred to number According to storage processing unit, the heat balls, which are used to the temperature of heat balls acquiring transmission module by data, is transferred to data storage Processing unit, the data storage processing unit are used for the temperature in oxidation of coal workspace, the temperature in coal sample tank, heat balls Temperature handle and transmission telecommunications number gives Bidirectional temperature-controlling switch, Bidirectional temperature-controlling switch is for according to the telecommunications received Number control temperature control module is adjusted the temperature in oxidation of coal workspace, controls heat balls and adjust to the temperature in coal sample tank Section.
The first fan threeway rectifying valve, the second fan threeway rectifying valve, third fan threeway rectifying valve, the 4th fan Threeway rectifying valve, the 5th fan threeway rectifying valve, the 6th fan threeway rectifying valve, the 7th fan threeway rectifying valve, the 8th fan Threeway rectifying valve, the 9th fan threeway rectification valve arrangement are identical；The first fan threeway rectifying valve includes valve body, the valve body It is equipped with the port, two ports, three ports for being respectively facing different directions, the valve inner is equipped with fan spool, the fan Type spool is connected with rectification knob；The valve body is embedded with sealing joint strip in inner wall, and the fan spool is that central angle cone is real Heart design, the circular cone cambered surface of the fan spool are posted sealing joint strip and are kissed with the cross section of a port, two ports, three ports It closes, the rectification knob is used to adjust the rotation angle of fan spool.
The coal sample tank further includes the first pore sieve, the second pore sieve, and the coal sample tank upper cover is equipped with the in bottom One equidistant close screen mesh, the coal sample tank lower cover are equipped with the second equidistant close screen mesh, the first pore sieve setting at top Below the first equidistant close screen mesh, in coal sample tank above coal sample top layer, the second pore sieve setting is equidistant close second Above screen mesh, in coal sample tank below coal sample bottom, between the described first equidistant close screen mesh, the second equidistant close screen mesh are etc. Away from concentric ring type hard sieve；
Tank body, coal sample tank upper cover, the coal sample tank lower cover of the coal sample tank are all made of high temperature resistant and high pressure resistant material, the coal Sample tank upper cover, coal sample tank lower cover are filled with heat preserving and insulating material in respective middle section；
The solid center of gravity of coal sample in coal sample tank is arranged in the heat balls, and the heat balls are electric heating type；It is described Temp probe have it is multiple, the temp probe and data acquisition transmission module between connecting wire pass through the first equidistant close hole sizer Online mesh, the temp probe are vertically embedded in coal sample tank in coal sample.
The electronic type gas detecting instrument group includes O2Detector, carbon monoxide detector, CO2Detector, CH4Detector, C2H4Inspection Survey instrument, C2H2Detector, N2Detector.
The collection bottle is the quartzy bottle with range；The gas cooling pipe is spiral shape, and first air inlet pipeline is worn Cross the spiral space that gas cooling pipe is enclosed.
The application method of above-mentioned multifunctional coal oxidation characteristic experimental provision, which is characterized in that include the following steps:
Step 1: the type of the determination oxidation of coal characterization experiments to be carried out, log-on data storage processing unit；The coal oxygen The type of change characterization experiments aoxidizes heating experiment for coal spontaneous combustion, Marking Gas of Coal Spontaneous Combustion test experience, coal thermal coefficient are tested, Coal gas release experiment, oxidation of coal water generate rate experiments, the experiment of coal shortest spontaneous combustion period, the change of oxidation of coal characteristic gas concentration Change coefficient determination and tests one of this seven kinds experiments；
Step 2: according to the type for the oxidation of coal characterization experiments to be carried out, adjusting the first fan threeway rectifying valve to the 9th fan The rectification knob of each fan threeway rectifying valve to be in type threeway rectifying valve to adjust the on-off of each port of each fan threeway rectifying valve, Start closed circulation air pump；
Step 3: setting external source gas as N2, external source gas is passed through by the second external source gas port, from the first external source gas Mouth discharge, ambient atmos adjust the micro valve and are pressed with adjusting by entering equal dabbing tubule after the drying of the second drying tube Degree, the electronic type gas detecting instrument group O indoor to gas sensor2Concentration, CO concentration, CO2Concentration, CH4Concentration, C2H4 Concentration, C2H2Concentration, N2Concentration is monitored and each concentration data is acquired transmission module transmission through data by data line To data storage processing unit, the temp probe record to the temperature in coal sample tank and acquires transmission module by data It is transferred to data storage processing unit；
Step 4: if the type of the oxidation of coal characterization experiments is coal spontaneous combustion oxidation heating experiment or coal gas release experiment Or oxidation of coal water generates rate experiments or the experiment of coal shortest spontaneous combustion period or the measurement of oxidation of coal characteristic gas concentration variation coefficient Experiment, then startup program temperature-controlled box, sets experiment initial temperature as original coal sample site by data storage processing unit Temperature, the temperature control module carry out record and acquire transmission module by data to be transferred to number to the temperature in oxidation of coal workspace According to storage processing unit, data storage processing unit is by Bidirectional temperature-controlling switch control temperature control module in oxidation of coal workspace Temperature is adjusted, and keeps the temperature in oxidation of coal workspace consistent with the temperature in coal sample tank；
If the type of the oxidation of coal characterization experiments is Marking Gas of Coal Spontaneous Combustion test experience, startup program temperature control Case sets experiment initial temperature by data storage processing unit, and data storage processing unit passes through Bidirectional temperature-controlling switch control The temperature in coal sample tank is adjusted in heat balls, and data acquisition transmission module, which acquires the temperature of heat balls and is transferred to data, deposits Store up processing unit；
If the type of the oxidation of coal characterization experiments is the experiment of coal thermal coefficient, startup program temperature-controlled box passes through data Storage processing unit sets the experimental temperature upper limit；
Step 5: if the type of the oxidation of coal characterization experiments is coal spontaneous combustion oxidation heating experiment or the significant gas of coal spontaneous combustion Body test experience or oxidation of coal water generate rate experiments or the experiment of coal shortest spontaneous combustion period or oxidation of coal characteristic gas concentration becomes Change coefficient determination experiment, is then containing 21%O by foreign gas structural reform when the temperature in coal sample tank reaches experiment initial temperature2's Mixed gas enters step 6；
If the type of the oxidation of coal characterization experiments is the experiment of coal thermal coefficient or coal gas release experiment, it is directly entered Step 6；
Step 6: if the type of the oxidation of coal characterization experiments is coal spontaneous combustion oxidation heating experiment, being directly entered step 7；
If the type of the oxidation of coal characterization experiments is Marking Gas of Coal Spontaneous Combustion test experience, filled when in test pipeline Completely contain 21%O2Mixed gas after, adjust the 6th fan threeway rectifying valve, the 7th fan threeway rectifying valve, make the 6th fan three Logical rectifying valve, the 7th fan threeway rectifying valve two ports be plugged, form closed circulation pipeline, originate coal sample in experiment At a temperature of continue 30 seconds after, readjust the 6th fan threeway rectifying valve, the 7th fan threeway rectifying valve, make the 6th fan threeway Three ports of rectifying valve, the 7th fan threeway rectifying valve a port be plugged, open test pipeline, in the first external source gas Eluting gas is collected at mouthful, and the type of eluting gas is detected by high-precision gas chromatograph, passes through data storage processing unit The temperature that the type and each Marking Gas of Coal Spontaneous Combustion for recording Marking Gas of Coal Spontaneous Combustion generate；
If the type of the oxidation of coal characterization experiments is the experiment of coal thermal coefficient, as the indoor N of gas sensor2Concentration When reaching preset concentration, third fan threeway rectifying valve, the 4th fan threeway rectifying valve are adjusted, third fan threeway rectifying valve is made Two ports, the 4th fan threeway rectifying valve three ports be plugged, make coal sample tank, humidity sensor be in closing Under state, data storage processing unit is adjusted the temperature in coal sample tank by Bidirectional temperature-controlling switch control heat balls, number The temperature of heat balls is acquired according to acquisition transmission module and is transferred to data storage processing unit, when the temperature in coal sample tank reaches real Heat balls stop heating when testing temperature upper limit, keep coal sample cooling；
If the type of the oxidation of coal characterization experiments is coal gas release experiment, as the indoor N of gas sensor2Concentration reaches When to preset concentration, third fan threeway rectifying valve, the 4th fan threeway rectifying valve are adjusted, third fan threeway rectifying valve is made One port, the 4th fan threeway rectifying valve three ports be plugged, locate coal sample tank, humidity sensor, pressure sensor Under closed state, the pressure data of data acquisition transmission module acquisition pressure sensor monitoring is simultaneously transferred to data storage processing Unit；
If the type of the oxidation of coal characterization experiments is that oxidation of coal water generates rate experiments, when gas sensor is indoor O2When concentration reaches preset concentration, third fan threeway rectifying valve, the 4th fan threeway rectifying valve are adjusted, third fan threeway is made Two ports of rectifying valve, the 4th fan threeway rectifying valve three ports be plugged, so that coal sample tank, humidity sensor is in envelope Under closed state, the humidity data of data acquisition transmission module acquisition humidity sensor monitoring is simultaneously transferred to data storage processing list Member, until humidity reaches 100%；
If the type of the oxidation of coal characterization experiments is the experiment of coal shortest spontaneous combustion period, by Marking Gas of Coal Spontaneous Combustion The minimum temperature that each Marking Gas of Coal Spontaneous Combustion that test experience obtains generates in temperature is set as temperature upper limit, when in coal sample tank When temperature reaches temperature upper limit, stop experiment；
If the type of the oxidation of coal characterization experiments is oxidation of coal characteristic gas concentration variation coefficient measurement experiment, work as gas The indoor O of body sensor2When concentration reaches preset concentration, the 6th fan threeway rectifying valve, the 7th fan threeway rectifying valve are adjusted, It is plugged two ports of the 6th fan threeway rectifying valve, the 7th fan threeway rectifying valve, forms closed circulation pipeline；
Step 7: experimental data is saved by data storage processing unit；The experimental data includes the temperature in coal sample tank Degree, the temperature in oxidation of coal workspace, the temperature of heat balls, the indoor O of gas sensor2Concentration, CO concentration, CO2Concentration, CH4 Concentration, C2H4Concentration, C2H2Concentration, N2Concentration, humidity sensor monitoring humidity data, pressure sensor monitoring number pressure It is generated according to the categorical data and each Marking Gas of Coal Spontaneous Combustion of the Marking Gas of Coal Spontaneous Combustion of, high-precision gas chromatograph detection Temperature.
In the step 3, external source gas is passed through by the second external source gas port, flow through the 7th fan threeway rectifying valve and In first drying tube after drying, enters in preheating pipeline by the 8th fan threeway rectifying valve and preheat or enter the second air inlet pipe Road enters coal sample tank by coal sample canister incoming gas interface by the 4th fan threeway rectifying valve, then is flowed out by coal sample tank outlet interface, according to It is secondary after humidity sensor, third fan threeway rectifying valve by the first outlet pipe to the second fan threeway rectifying valve, enter Gas cooling recycles gas circuit or enters the second outlet pipe, enters gas sensor room by the first fan threeway rectifying valve, then Closed circulation air pump is flowed into through the 9th fan threeway rectifying valve, then flows through the 5th fan threeway rectifying valve, the from the first gas circuit It is discharged after six fan threeway rectifying valves from the first external source gas port；
If the type of the oxidation of coal characterization experiments is that coal spontaneous combustion oxidation heating experiment or oxidation of coal water generate rate experiments Or coal shortest spontaneous combustion period is tested or oxidation of coal characteristic gas concentration variation coefficient measurement experiment, in the step 2, adjusts each The rectification knob of fan threeway rectifying valve makes the fan spool of the 7th fan threeway rectifying valve block one port, makes the 8th fan The fan spool of type threeway rectifying valve is blocked secondly port, makes the fan spool of the 4th fan threeway rectifying valve block one gas Mouthful, block the fan spool of third fan threeway rectifying valve thirdly port, makes the fan spool of the second fan threeway rectifying valve One port is blocked, blocks the fan spool of the first fan threeway rectifying valve secondly port, makes the 9th fan threeway rectifying valve Fan spool block secondly port, makes the fan spool of the 5th fan threeway rectifying valve block one port, make the 6th fan The fan spool of threeway rectifying valve is blocked thirdly port, external source gas flow needed for adjusting the determining experiment of flow control valve are described In step 3, external source gas enters preheating in preheating pipeline by the 8th fan threeway rectifying valve, is rectified by the second fan threeway Enter gas cooling after valve and recycle gas circuit, is introduced into gas cooling pipe, the cooling liquid water generated is saved in collection bottle, cold But the gas after successively passes through the first air inlet pipeline, flowmeter to the first fan threeway rectifying valve；
If the type of the oxidation of coal characterization experiments is coal gas release experiment, in the step 2, each fan threeway is adjusted The rectification knob of rectifying valve makes the fan spool of the 7th fan threeway rectifying valve block one port, keeps the 8th fan threeway whole The fan spool of stream valve is blocked secondly port, makes the fan spool of the 4th fan threeway rectifying valve block one port, make third The fan spool of fan threeway rectifying valve is blocked thirdly port, blocks the fan spool of the second fan threeway rectifying valve secondly gas Mouthful, so that the fan spool of the first fan threeway rectifying valve is blocked one port, makes the fan spool of the 9th fan threeway rectifying valve It blocks secondly port, makes the fan spool of the 5th fan threeway rectifying valve block one port, makes the 6th fan threeway rectifying valve Fan spool block thirdly port, in the step 3, external source gas enters preheating pipeline by the 8th fan threeway rectifying valve Interior preheating, by entering the second outlet pipe after the second fan threeway rectifying valve；
If the type of the oxidation of coal characterization experiments is that Marking Gas of Coal Spontaneous Combustion test experience or coal thermal coefficient are tested When, in the step 2, the rectification knob of each fan threeway rectifying valve is adjusted, the fan spool of the 7th fan threeway rectifying valve is made One port is blocked, blocks the fan spool of the 8th fan threeway rectifying valve thirdly port, makes the 4th fan threeway rectifying valve Fan spool block secondly port, blocks the fan spool of third fan threeway rectifying valve thirdly port, makes the second fan The fan spool of threeway rectifying valve is blocked secondly port, makes the fan spool of the first fan threeway rectifying valve block one port, The fan spool of the 9th fan threeway rectifying valve is blocked secondly port, blocks the fan spool of the 5th fan threeway rectifying valve One port blocks the fan spool of the 6th fan threeway rectifying valve thirdly port, and in the step 3, external source gas passes through 8th fan threeway rectifying valve enters the second air inlet pipeline, by entering the second outlet pipe after the second fan threeway rectifying valve.
In the step 6, when needing to form closed circulation pipeline or being in coal sample tank under closed state, close miniature Valve.
The application method of above-mentioned multifunctional coal oxidation characteristic experimental provision further includes step 8, and the step 8 includes:
If the type of the oxidation of coal characterization experiments is coal spontaneous combustion oxidation heating experiment, change experiment initial temperature or coal In sample tank the partial size of coal sample or the degree of metamorphism of coal sample or in one experiment change external source gas flow, pass through coal sampling tank Interior temperature change, the heating of Study on Coal spontaneous combustion oxidation and experiment initial temperature or coal sample partial size or coal sample degree of metamorphism or foreign gas Relationship between body flow；
If the type of the oxidation of coal characterization experiments is Marking Gas of Coal Spontaneous Combustion test experience, change experiment starting temperature O in degree or coal sample tank in the partial size of coal sample or the degree of metamorphism of coal sample or external source gas2Concentration, by analyzing coal spontaneous combustion mark Property gas type and each Marking Gas of Coal Spontaneous Combustion generate temperature, study Marking Gas of Coal Spontaneous Combustion type and each coal from Fire the temperature and experiment initial temperature or coal sample partial size or coal sample degree of metamorphism or O that gas marker generates2Relationship between concentration；
If the type of the oxidation of coal characterization experiments is the experiment of coal thermal coefficient, change the experimental temperature upper limit or coal sample tank The partial size of interior coal sample or the humidity of coal sample, by the temperature change in coal sampling tank, Study on Coal thermal coefficient and experimental temperature Relationship between the upper limit or coal sample partial size or coal sample humidity；
If the type of the oxidation of coal characterization experiments is coal gas release experiment, change experiment initial temperature or coal sample tank The partial size of interior coal sample, by analyzing the variation of pressure, discharged after research coal body is broken gas intensity and experiment initial temperature or Relationship between coal sample partial size；
If the type of the oxidation of coal characterization experiments be oxidation of coal water generate rate experiments, change experiment initial temperature or O in coal sample tank in the partial size of coal sample or external source gas2Concentration, by analyzing the variation of humidity, research oxidation of coal water generates speed Rate and experiment initial temperature or coal sample partial size or O2Relationship between concentration；
If the type of the oxidation of coal characterization experiments be coal shortest spontaneous combustion period experiment, change experiment initial temperature or The partial size of coal sample or external source gas flow in coal sample tank reach the time of temperature upper limit by analyzing, and Study on Coal is most short to be sent out naturally Relationship between fiery phase and experiment initial temperature or coal sample partial size or external source gas flow；
If the type of the oxidation of coal characterization experiments is oxidation of coal characteristic gas concentration variation coefficient measurement experiment, change The partial size or external source gas flow for testing coal sample in initial temperature or coal sample tank, by analyzing O2Concentration, CO concentration, CO2Concentration Variation, Study on Coal coefficient of oxygen consuming, CO generate coefficient, CO2Generate coefficient and experiment initial temperature or coal sample partial size or external source gas Flow or O2Relationship between concentration.
The invention has the benefit that
1, of the invention versatile, a kind of experimental provision can be used to complete coal spontaneous combustion oxidation heating experiment, coal spontaneous combustion mark The experiment of will gas detection, the experiment of coal thermal coefficient, coal gas release experiment, oxidation of coal water generate rate experiments, coal most it is short from So being under fire, the phase tests, this seven kinds of oxidation of coal characteristic gas concentration variation coefficient measurement experiment tests, and can be improved conventional efficient With experiment accuracy.
2, the present invention can complete specific temperature, different oxygen concentrations condition by once testing under the conditions of enclosed experiment Lower oxidation of coal oxygen consumption rate, CO generating rate and CO2The measurement of generating rate, can be by once testing completion different oxygen concentrations Lower oxidation of coal water generates the measurement of rate, can by once test complete varying environment at a temperature of coal gasresolution dynamic change Measurement, the experiment condition of coal thermal coefficient under different temperatures, damp condition can be measured, improve the flexible of experimentation Property, experiment accuracy and conventional efficient.
3, the present invention is under the conditions of opening experiment, can measure each gas componant that coal under different temperatures releases, obtain It obtains Marking Gas of Coal Spontaneous Combustion and coal shortest spontaneous combustion period is determined according to Marking Gas of Coal Spontaneous Combustion.
4, data storage processing unit of the invention passes through Bidirectional temperature-controlling switch control according to the temperature data in coal sample tank The temperature in oxidation of coal workspace is adjusted in temperature control module, so that the temperature in oxidation of coal workspace and the temperature in coal sample tank Degree is consistent, to realize intelligence with temperature control temperature function.
5, the present invention recycles gas circuit and humidity sensor with control temp, gas cooling by setting intelligence, can be disposable Measure the experiment condition that oxidation of coal water under coal spontaneous combustion oxidation heating dynamic changing process and condition of different temperatures generates rate.
6, the present invention devises novel fan-shaped threeway rectifying valve, can pass through the rectification of each fan-shaped threeway rectifying valve of adjusting Knob is realized so as to adjust the on-off of each port of each fan threeway rectifying valve to gas to adjust the rotation angle of fan spool Road is open, gas circuit is closed, the rectification effect of double gas circuit gas mixings, to realize the conversions of various experiment gas circuits, and structure It is simple and convenient to operate, is easy maintenance and low cost；The valve body of fan threeway rectifying valve of the invention exists in inner wall, fan spool Circular cone cambered surface is embedded with sealing joint strip, can reinforce the leakproofness of fan threeway rectifying valve.
7, the present invention is equipped with electronic type gas detecting instrument group in gas sensor chamber interior, can be flexible according to experiment demand The type and quantity for selecting electronic type gas detecting instrument, can be measured in real time experimental gas concentration.
8, the present invention can be realized the stabilization of gas sensor room pressure by the way that equal dabbing tubule is arranged；It is passed in gas It is equipped with micro valve between sensor room and equal dabbing tubule, pressure degree or enclosed experiment gas can be adjusted by adjusting micro valve Road；The present invention is connected with the second drying tube in the other end of equal dabbing tubule, can dry the ambient atmos into equal dabbing tubule, To reduce error, service life of equipment is improved.
9, the present invention can facilitate gas diffusion by the first equidistant close screen mesh of setting and the second equidistant close screen mesh, The temperature measuring point position of temp probe can also be selected according to requirement of experiment；The present invention is thin by the first pore sieve of setting and second Screen mesh can be avoided cinder blocking gas circuit, to protect equipment.
10, the present invention recycles gas circuit by setting gas cooling and sets spiral shape for gas cooling pipe, makes major part Cooling tube is not exposed to temperature programmed control box body and as much as possible contacts with air, can be quickly cooled down temperature programmed control box body The cooling moisture generated is simultaneously stored in collection bottle by the gas of discharge, cooling gas effect compared to common " wall-attaching type " or " Clothoid type " cooling tube improves a lot；The present invention, being capable of external source gas needed for regulation experiment by adjusting flow control valve Flow.
Detailed description of the invention
Fig. 1 is the main view of multifunctional coal oxidation characteristic experimental provision of the invention；
Fig. 2 is the side view of multifunctional coal oxidation characteristic experimental provision of the invention；
Fig. 3 is the structural schematic diagram of the coal sample tank upper cover of multifunctional coal oxidation characteristic experimental provision of the invention；
Fig. 4 is the structural schematic diagram of the first equidistant close screen mesh of multifunctional coal oxidation characteristic experimental provision of the invention；
Fig. 5 is the structural representation of the first fan threeway rectifying valve of multifunctional coal oxidation characteristic experimental provision of the invention Figure.
In figure, 1-temperature programmed control case, 2-control areas, 3-oxidation of coal workspaces, the 4-the first air inlet pipeline, 5-flows Meter, 6-gas sensor rooms, 7-closed circulation air pumps, the 8-the first drying tube, 9-preheating pipelines, 10-coal sample tanks, 11- Coal sample tank upper cover, 111-coal sample canister incoming gas interfaces, the 112-the first equidistant close screen mesh, 12-coal sample tank lower covers, 13-humidity Sensor, 14-pressure sensors, 15-gas cooling pipes, 16-collection bottles, 17-equal dabbing tubules, 18-the second is dry Pipe, 19-temp probes, 20-data acquire transmission module, 21-data storage processing units, and 22-Bidirectional temperature-controllings switch, 231-the first external source gas port, the 232-the second external source gas port, the 24-the first gas circuit, the 25-the second gas circuit, the 261-the first fan Type threeway rectifying valve, the 262-the second fan threeway rectifying valve, 263-third fan threeway rectifying valves, the 264-the four fan three Logical rectifying valve, the 265-the five fan threeway rectifying valve, the 266-the six fan threeway rectifying valve, the 267-the seven fan threeway are whole Flow valve, the 268-the eight fan threeway rectifying valve, the 269-the nine fan threeway rectifying valve, 27-micro valves, 28-flow controls Valve processed, the 291-the first pore sieve, the 292-the second pore sieve, 30-rectification knobs, 31-fan-shaped spools, 32-valve bodies, 321-one port, 322-two ports, 323-three ports, 33-heat balls, the 34-the second air inlet pipeline, the 35-the first outlet Pipeline, the 36-the second outlet pipe.
Specific embodiment
Below in conjunction with the drawings and specific embodiments, the invention will be further described.
Embodiment one
As shown in Figure 1 and Figure 2, main view, the side view of multifunctional coal oxidation characteristic experimental provision respectively of the present invention.This The multifunctional coal oxidation characteristic experimental provision of invention, it is characterised in that: including temperature programmed control case 1, data storage processing unit 21； Described program temperature-controlled box 1 includes cabinet, control area 2, oxidation of coal workspace 3, gas cooling circulation gas circuit, the control area 2, coal The setting of workspace 3 is aoxidized in box house, side outside the enclosure is arranged in the gas cooling circulation gas circuit.
The control area 2 include closed circulation air pump 7, the first gas circuit 24, the second gas circuit 25, the first external source gas port 231, Second external source gas port 232, the first drying tube 8, the second air inlet pipeline 34, Bidirectional temperature-controlling switch 22, data acquire transmission module 20, gas sensor room 6, micro valve 27, equal dabbing tubule 17, the second drying tube 18, the second outlet pipe 36.
The outlet of the closed circulation air pump 7 passes through two ports of the first gas circuit 24 and the 5th fan threeway rectifying valve 265 It is connected, the entrance of the closed circulation air pump 7 is connected with three ports of the 9th fan threeway rectifying valve 269, and the described 9th Two ports of fan threeway rectifying valve 269 are connected by the second gas circuit 25 with a port of the 5th fan threeway rectifying valve 265, Three ports of the 5th fan threeway rectifying valve 265 are connected with a port of the 6th fan threeway rectifying valve 266, and described Two ports of six fan threeway rectifying valves 266 are connected with the first external source gas port 231, the 6th fan threeway rectifying valve 266 three ports are connected with a port of the 7th fan threeway rectifying valve 267, the 7th fan threeway rectifying valve 267 Two ports are connected with the second external source gas port 232, three ports and the first drying tube of the 7th fan threeway rectifying valve 267 8 entrance is connected, and the outlet of first drying tube 8 is connected with a port of the 8th fan threeway rectifying valve 268, described Two ports of the 8th fan threeway rectifying valve 268 pass through a gas of the second air inlet pipeline 34 and the 4th fan threeway rectifying valve 264 Mouth is connected.Wherein it is possible to according to experiment demand, by adjust respectively with the first external source gas port 231, the second external source gas port 232 the 6th fan threeway rectifying valve 266, the 7th fan threeway rectifying valves 267 being connected realize injection or discharge gas or complete Totally-enclosed gas circuit.It can be according to experiment demand, by adjusting the 5th fan threeway rectifying valve 265, the 9th fan threeway rectifying valve 269, to select different gas circuit forms.
One port of the 9th fan threeway rectifying valve 269 is connected with the outlet of gas sensor room 6, the gas Transducer room 6 is equipped with electronic type gas detecting instrument group in inside, and the gas sensor room 6 is thin through micro valve 27 and equal dabbing One end of pipe 17 is connected, and the equal dabbing tubule 17 is connected in the other end with the second drying tube 18, the gas sensor The entrance of room 6 is connected with three ports of the first fan threeway rectifying valve 261, and the two of the first fan threeway rectifying valve 261 Port is connected by the second outlet pipe 36 with a port of the second fan threeway rectifying valve 262.Wherein, micro extraneous gas Body can enter gas sensor room 6 by equal dabbing tubule 17 and pass through to realize the stabilization of gas sensor room pressure Pressure degree or enclosed experiment gas circuit can be adjusted by adjusting micro valve；Second drying tube can be dried into equal dabbing tubule Ambient atmos improve service life of equipment to reduce error.
The oxidation of coal workspace 3 includes coal sample tank 10, temperature control module, humidity sensor 13, pressure sensor 14, preheating Pipeline 9, the first outlet pipe 35；The temperature control module is arranged inside oxidation of coal workspace 3, outside coal sample tank 10；The coal Sample tank 10 includes coal sample tank upper cover 11, coal sample tank lower cover 12, temp probe 19, heat balls 33, including the coal sample tank upper cover 11 Portion is equipped with coal sample canister incoming gas interface 111, and the coal sample tank lower cover 12 is equipped with coal sample tank outlet interface, the heat balls in inside 33, temp probe 19 is arranged in coal sample tank 10 in coal sample；Three ports of the 8th fan threeway rectifying valve 268 and preheating One end of pipeline 9 is connected, and the other end of the preheating pipeline 9 is connected with two ports of the 4th fan threeway rectifying valve 264, Three ports of the 4th fan threeway rectifying valve 264 are connected with coal sample canister incoming gas interface 111, the coal sample tank outlet interface It is connected with one end of humidity sensor 13, the other end and the third fan threeway rectifying valve 263 of the humidity sensor 13 Two ports are connected, and three ports of the third fan threeway rectifying valve 263 are connected with pressure sensor 14, the third fan One port of type threeway rectifying valve 263 is connected by the first outlet pipe 35 with three ports of the second fan threeway rectifying valve 262 It is logical.
Gas cooling circulation gas circuit include flowmeter 5, flow control valve 28, the first air inlet pipeline 4, collection bottle 16, Gas cooling pipe 15；One end of the gas cooling pipe 15 is connected with two ports of the second fan threeway rectifying valve 262, described The other end of gas cooling pipe 15 is connected with the air inlet of collection bottle 16, the gas outlet of the collection bottle 16 and the first air inlet pipe The one end on road 4 is connected, and the other end of first air inlet pipeline 4 and one end of flowmeter 5 are connected to flow control valve 28, institute Flowmeter 5 is stated to be connected in the other end with a port of the first fan threeway rectifying valve 261.
The data line of each electronic type gas detecting instrument in the electronic type gas detecting instrument group, temperature control module, The input terminal electricity of temp probe 19, heat balls 33, humidity sensor 13, pressure sensor 14 with data acquisition transmission module 20 The output end of connection, the data acquisition transmission module 20 is electrically connected with the input terminal of data storage processing unit 21；The electricity The detection control line of each electronic type gas detecting instrument, Bidirectional temperature-controlling switch 22 are stored with data in minor gas detecting instrument group The output end of processing unit 21 is electrically connected, and the temperature control module, heat balls 33 are electrically connected with Bidirectional temperature-controlling switch 22.
The data storage processing unit 21 is the host computer comprising electronic program needed for oxidation of coal characterization experiments；The control Warm module is used to carry out the temperature in oxidation of coal workspace 3 record and is transferred to data by data acquisition transmission module 20 to deposit Processing unit 21 is stored up, the temp probe 19 is used to carry out the temperature in coal sample tank 10 record and acquires transmission mould by data Block 20 is transferred to data storage processing unit 21, and the heat balls 33 are used to acquire the temperature of heat balls 33 by data and transmit Module 20 is transferred to data storage processing unit 21, and the data storage processing unit 21 is used for in oxidation of coal workspace 3 Temperature, the temperature in coal sample tank 10, the temperature of heat balls 33 handle and transmission telecommunications number is to Bidirectional temperature-controlling switch 22, described Bidirectional temperature-controlling switch 22 adjusts the temperature in oxidation of coal workspace 3 for control temperature control module based on the received electrical signal The temperature in coal sample tank 10 is adjusted in section, control heat balls 33.
In the present embodiment one, the first fan threeway rectifying valve 261, the second fan threeway rectifying valve 262, third fan Threeway rectifying valve 263, the 4th fan threeway rectifying valve 264, the 5th fan threeway rectifying valve 265, the 6th fan threeway rectifying valve 266, the 7th fan threeway rectifying valve 267, the 8th fan threeway rectifying valve 268,269 structure phase of the 9th fan threeway rectifying valve Together.As shown in figure 5, the first fan threeway rectifying valve 261 includes valve body 32, the valve body 32 is equipped with and is respectively facing difference One port 321, two ports 322, three ports 323 in direction are equipped with fan spool 31, the fan spool inside the valve body 32 31 are connected with rectification knob 30；The valve body 32 is embedded with sealing joint strip in inner wall, and the fan spool 31 is central angle cone Solid design, the circular cone cambered surface of the fan spool 31 post sealing joint strip and with a port 321, two ports 322, three ports 323 cross section coincide, and the rectification knob 30 is used to adjust the rotation angle of fan spool 31.The present invention designs above-mentioned Novel fan-shaped threeway rectifying valve can adjust the rotation of fan spool by adjusting the rectification knob of each fan-shaped threeway rectifying valve Gyration realizes, gas circuit closing, double gas circuit open to gas circuit so as to adjust the on-off of each port of each fan threeway rectifying valve The rectification effect of gas mixing, to realize the conversion of various experiment gas circuits, and structure is simple and convenient to operate, is easy maintenance And low cost；The valve body of fan threeway rectifying valve of the invention is embedded with sealing joint strip in circular cone cambered surface in inner wall, fan spool, It can reinforce the leakproofness of fan threeway rectifying valve.
In the present embodiment one, the coal sample tank 10 further includes the first pore sieve 291, the second pore sieve 292, such as Fig. 3 Shown, the coal sample tank upper cover 11 is equipped with the first equidistant close screen mesh 112 as shown in Figure 4, the coal sample tank lower cover in bottom 12 are equipped with the second equidistant close screen mesh at top, and the first pore sieve 291 is arranged under the first equidistant close screen mesh 112 In side, coal sample tank 10 above coal sample top layer, the second pore sieve 292 is arranged above the second equidistant close screen mesh, coal sample In tank 10 below coal sample bottom, the described first equidistant equidistant close screen mesh of close screen mesh 112, second is equidistant concentric ring type Hard sieve；Tank body, coal sample tank upper cover 11, the coal sample tank lower cover 12 of the coal sample tank 10 are all made of high temperature resistant and high pressure resistant material Matter, the coal sample tank upper cover 11, coal sample tank lower cover 12 are filled with heat preserving and insulating material in respective middle section；The heating The solid center of gravity of coal sample in coal sample tank 10 is arranged in ball 33, and the heat balls 33 are electric heating type；The temp probe 19 Have it is multiple, the temp probe 19 and data acquisition transmission module 20 between connecting wire pass through the first equidistant close screen mesh Mesh on 112, the temp probe 19 are vertically embedded in coal sample tank 10 in coal sample.Wherein, by the way that the first equidistant close hole is arranged Sieve and the second equidistant close screen mesh, can facilitate gas diffusion, additionally it is possible to according to the thermometric of requirement of experiment selection temp probe Point position；By the first pore sieve of setting and the second pore sieve, cinder blocking gas circuit can be avoided, to protect equipment. It can be according to experiment demand setting as the length of the connecting wire of temp probe 19.
In the present embodiment one, the electronic type gas detecting instrument group includes O2Detector, carbon monoxide detector, CO2Detector, CH4 Detector, C2H4Detector, C2H2Detector, N2Detector.Wherein it is possible to according to experiment demand flexible choice electronic type gas inspection The type and quantity of instrument are surveyed, and experimental gas concentration can be measured in real time.
In the present embodiment one, the collection bottle 16 is the quartzy bottle with range；The gas cooling pipe 15 is spiral shape, institute It states the first air inlet pipeline 4 and passes through the spiral space that gas cooling pipe 15 is enclosed.Wherein, gas cooling pipe 15 selects thermal conductivity good Gas cooling pipe is set spiral shape by material, make most of cooling tube be not exposed to temperature programmed control box body and to the greatest extent maximum can It can be contacted with air, the gas of temperature programmed control box body discharge can be quickly cooled down and be stored in the cooling moisture generated and catchmented In bottle, cooling gas effect improves a lot compared to common " wall-attaching type " or " Clothoid type " cooling tube；The present invention passes through Flow control valve is adjusted, the flow of external source gas needed for regulation experiment is capable of.
The application method of multifunctional coal oxidation characteristic experimental provision of the invention, includes the following steps:
Step 1: the type of the determination oxidation of coal characterization experiments to be carried out, log-on data storage processing unit 21；The coal The type of oxidation characteristic experiment is coal spontaneous combustion oxidation heating experiment, Marking Gas of Coal Spontaneous Combustion test experience, coal thermal coefficient reality It tests, coal gas release experiment, oxidation of coal water generate rate experiments, coal shortest spontaneous combustion period is tested, oxidation of coal characteristic gas is dense Spend one of this seven kinds experiments of variation coefficient measurement experiment.
In the present embodiment one, it is real that coal spontaneous combustion oxidation heating is carried out using multifunctional coal oxidation characteristic experimental provision of the invention It tests.
Step 2: according to the type for the oxidation of coal characterization experiments to be carried out, adjusting the first fan threeway rectifying valve 261 to the The rectification knob of each fan threeway rectifying valve is in nine fan threeway rectifying valves 269 to adjust each port of each fan threeway rectifying valve On-off, start closed circulation air pump 7.
In the present embodiment one, the rectification knob of each fan threeway rectifying valve is adjusted, makes the 7th fan threeway rectifying valve 267 Fan spool blocks one port, blocks the fan spool of the 8th fan threeway rectifying valve 268 secondly port, makes the 4th fan The fan spool of threeway rectifying valve 264 blocks one port, block the fan spool of third fan threeway rectifying valve 263 thirdly Port makes the fan spool of the second fan threeway rectifying valve 262 block one port, makes the first fan threeway rectifying valve 261 Fan spool is blocked secondly port, blocks the fan spool of the 9th fan threeway rectifying valve 269 secondly port, makes the 5th fan The fan spool of threeway rectifying valve 265 blocks one port, block the fan spool of the 6th fan threeway rectifying valve 266 thirdly Port adjusts external source gas flow needed for flow control valve 28 determines experiment.
Step 3: setting external source gas as N2, external source gas is passed through by the second external source gas port 232, from the first foreign gas Body mouth 231 is discharged, and ambient atmos adjust the micro valve 27 by entering equal dabbing tubule 17 after the drying of the second drying tube 18 Degree is pressed to adjust, the electronic type gas detecting instrument group is to the O in gas sensor room 62Concentration, CO concentration, CO2Concentration, CH4Concentration, C2H4Concentration, C2H2Concentration, N2Concentration is monitored and acquires each concentration data through data by data line Transmission module 20 is transferred to data storage processing unit 21, and the temp probe 19 records simultaneously the temperature in coal sample tank 10 Transmission module 20, which is acquired, by data is transferred to data storage processing unit 21.
In the present embodiment one, external source gas is passed through by the second external source gas port 232, flows through the 7th fan threeway rectifying valve 267 and it is dry in the first drying tube 8 after, enter in preheating pipeline 9 by the 8th fan threeway rectifying valve 268 and preheat, by the Four fan threeway rectifying valves 264 enter coal sample tank 10 by coal sample canister incoming gas interface 111, then are flowed out by coal sample tank outlet interface, It is successively whole by 35 to the second fan threeway of the first outlet pipe after humidity sensor 13, third fan threeway rectifying valve 263 Valve 262 is flowed, recycles gas circuit into gas cooling, gas sensor room 6 is entered by the first fan threeway rectifying valve 261, then pass through 9th fan threeway rectifying valve 269 flows into closed circulation air pump 7, then flows through the 5th fan threeway rectifying valve from the first gas circuit 24 265, it is discharged after the 6th fan threeway rectifying valve 266 from the first external source gas port 231.
Wherein, after external source gas enters gas cooling circulation gas circuit, gas cooling pipe 15, the cooling liquid generated are introduced into Water is saved in collection bottle 16, and gas after cooling successively passes through the first air inlet pipeline 4,5 to the first fan threeway of flowmeter Rectifying valve 261.
Step 4: startup program temperature-controlled box 1 sets experiment initial temperature as original coal by data storage processing unit 21 Sample site temperature, the temperature control module carry out record and acquire by data to transmit to the temperature in oxidation of coal workspace 3 Module 20 is transferred to data storage processing unit 21, and data storage processing unit 21 controls temperature control mould by Bidirectional temperature-controlling switch 22 The temperature in oxidation of coal workspace 3 is adjusted in block, makes the temperature in oxidation of coal workspace 3 and the temperature one in coal sample tank 10 It causes.
Step 5: being containing 21%O by foreign gas structural reform when the temperature in coal sample tank 10 reaches experiment initial temperature2It is mixed Gas is closed, enters step 6；
Step 6: the type of oxidation of coal characterization experiments is coal spontaneous combustion oxidation heating experiment, is directly entered step 7；
Step 7: experimental data is saved by data storage processing unit 21；The experimental data includes in coal sample tank 10 Temperature, the temperature in oxidation of coal workspace 3, the temperature of heat balls 33, the O in gas sensor room 62Concentration, CO concentration, CO2It is dense Degree, CH4Concentration, C2H4Concentration, C2H2Concentration, N2Concentration, the humidity data of the monitoring of humidity sensor 13, pressure sensor 14 monitor Pressure data, high-precision gas chromatograph detection Marking Gas of Coal Spontaneous Combustion categorical data and the significant gas of each coal spontaneous combustion The temperature that body generates.
Step 8: changing the partial size of coal sample or the degree of metamorphism of coal sample or primary in experiment initial temperature or coal sample tank 10 Change external source gas flow in experiment, by the temperature change in coal sampling tank 10, the heating of Study on Coal spontaneous combustion oxidation and experiment Relationship between initial temperature or coal sample partial size or coal sample degree of metamorphism or external source gas flow.
Embodiment two
The present embodiment two and the difference of above-described embodiment one are:
In step 1, Marking Gas of Coal Spontaneous Combustion inspection is carried out using multifunctional coal oxidation characteristic experimental provision of the invention Survey experiment；
In step 2, the rectification knob for adjusting each fan threeway rectifying valve makes the fan of the 8th fan threeway rectifying valve 268 Type spool is blocked thirdly port, blocks the fan spool of the 4th fan threeway rectifying valve 264 secondly port, makes the second fan three The fan spool of logical rectifying valve 262 is blocked secondly port, makes the fan spool of the first fan threeway rectifying valve 261 block one gas Mouthful；
In step 3, external source gas enters the second air inlet pipeline 34 by the 8th fan threeway rectifying valve 268, by the Enter the second outlet pipe 36 after two fan threeway rectifying valves 262；
In step 4, startup program temperature-controlled box 1 sets experiment initial temperature, data by data storage processing unit 21 Storage processing unit 21 controls heat balls 33 by Bidirectional temperature-controlling switch 22 and the temperature in coal sample tank 10 is adjusted, and data are adopted Collection transmission module 20 acquires the temperature of heat balls 33 and is transferred to data storage processing unit 21；
In step 6, it is full of when in test pipeline containing 21%O2Mixed gas after, adjust the 6th fan threeway rectifying valve 266, the 7th fan threeway rectifying valve 267 makes two gas of the 6th fan threeway rectifying valve 266, the 7th fan threeway rectifying valve 267 Mouth is plugged, and is formed closed circulation pipeline, is made coal sample after continuing 30 seconds under testing initial temperature, readjust the 6th fan Threeway rectifying valve 266, the 7th fan threeway rectifying valve 267 make three ports, the 7th fan of the 6th fan threeway rectifying valve 266 One port of threeway rectifying valve 267 is plugged, and opens test pipeline, eluting gas is collected at the first external source gas port 231, It is significant to record coal spontaneous combustion by data storage processing unit 21 for the type that eluting gas is detected by high-precision gas chromatograph The temperature that the type of gas and each Marking Gas of Coal Spontaneous Combustion generate；
In step 8, change the partial size of coal sample or the degree of metamorphism of coal sample or outer in experiment initial temperature or coal sample tank 10 O in source gas2Concentration, the temperature generated by the type and each Marking Gas of Coal Spontaneous Combustion of analyzing Marking Gas of Coal Spontaneous Combustion Degree, the temperature and experiment initial temperature or coal that the type and each Marking Gas of Coal Spontaneous Combustion for studying Marking Gas of Coal Spontaneous Combustion generate Sample partial size or coal sample degree of metamorphism or O2Relationship between concentration.
In the present embodiment two, in step 6, when needing to form closed circulation pipeline, micro valve 27 is closed；Work as needs When opening test pipeline, micro valve 27 is opened.
Wherein, oxidation reaction occurs under condition of different temperatures for coal can generate different gas markers, according to invention Team the study found that different rank coal, the temperature that various gas markers generate is also different, this result and industry Prevailing paradigm is different, therefore designs the Marking Gas of Coal Spontaneous Combustion test experience in the present embodiment two, by changing coal sample tank The degree of metamorphism of coal sample in 10, to study the type of Marking Gas of Coal Spontaneous Combustion and the temperature of each Marking Gas of Coal Spontaneous Combustion generation With the relationship between coal sample degree of metamorphism.
In the present embodiment two, generated when the type of Marking Gas of Coal Spontaneous Combustion to be studied and each Marking Gas of Coal Spontaneous Combustion Temperature and experiment initial temperature between relationship when, in one experiment, acquire and store the reality under first experiment initial temperature After testing data, next experiment initial temperature is set, is guaranteeing the O in external source gas2Data store under conditions of concentration is constant Processing unit (21) adjusts the temperature in coal sample tank (10) by Bidirectional temperature-controlling switch (22) control heat balls (33) again Section carries out the Marking Gas of Coal Spontaneous Combustion test experience under next experiment initial temperature, to analyze the significant gas of coal spontaneous combustion The temperature that the type of body and each Marking Gas of Coal Spontaneous Combustion generate.
In the present embodiment two, generated when the type of Marking Gas of Coal Spontaneous Combustion to be studied and each Marking Gas of Coal Spontaneous Combustion Temperature and O2When relationship between concentration, in one experiment, acquires and store first O2After experimental data under concentration, change O in external source gas2Concentration, O under conditions of guaranteeing that experiment initial temperature is constant, in gas sensor room (6)2Concentration When reaching preset concentration, next O is carried out2Marking Gas of Coal Spontaneous Combustion test experience under concentration, to analyze coal spontaneous combustion mark The temperature that the type of will gas and each Marking Gas of Coal Spontaneous Combustion generate.
In the present embodiment two, generated by the type and each Marking Gas of Coal Spontaneous Combustion of studying Marking Gas of Coal Spontaneous Combustion Temperature and experiment initial temperature or coal sample partial size or coal sample degree of metamorphism or O2Relationship between concentration can be coal mine actual production Fire extinguishing work in the process provides significant data.
Embodiment three
The present embodiment three and the difference of above-described embodiment two are:
In step 1, the experiment of coal thermal coefficient is carried out using multifunctional coal oxidation characteristic experimental provision of the invention；
In step 4, startup program temperature-controlled box 1 sets the experimental temperature upper limit by data storage processing unit 21；
In steps of 5, the type of oxidation of coal characterization experiments is the experiment of coal thermal coefficient, is directly entered step 6；
In step 6, as the N in gas sensor room 62When concentration reaches preset concentration, it is whole to adjust the threeway of third fan Valve 263, the 4th fan threeway rectifying valve 264 are flowed, keeps two ports of third fan threeway rectifying valve 263, the 4th fan threeway whole Three ports of stream valve 264 are plugged, and are in coal sample tank 10, humidity sensor 13 under closed state, data storage Processing unit 21 controls heat balls 33 by Bidirectional temperature-controlling switch 22 and the temperature in coal sample tank 10 is adjusted, and data acquisition passes Defeated module 20 acquires the temperature of heat balls 33 and is transferred to data storage processing unit 21, when the temperature in coal sample tank 10 reaches real Heat balls 33 stop heating when testing temperature upper limit, keep coal sample cooling；
In step 8, change the partial size of coal sample or the humidity of coal sample in the experimental temperature upper limit or coal sample tank 10, pass through analysis Temperature change in coal sample tank 10, the pass between Study on Coal thermal coefficient and the experimental temperature upper limit or coal sample partial size or coal sample humidity System.
In the present embodiment three, in step 6, when needing is in coal sample tank 10 under closed state, micro valve is closed 27。
Example IV
The present embodiment four and the difference of above-described embodiment one are:
In step 1, coal gas release experiment is carried out using multifunctional coal oxidation characteristic experimental provision of the invention；
In step 2, the rectification knob for adjusting each fan threeway rectifying valve makes the fan of the second fan threeway rectifying valve 262 Type spool is blocked secondly port, makes the fan spool of the first fan threeway rectifying valve 261 block one port；
In step 3, external source gas is by entering the second outlet pipe 36 after the second fan threeway rectifying valve 262；
In steps of 5, the type of oxidation of coal characterization experiments is coal gas release experiment, is directly entered step 6；
In step 6, as the N in gas sensor room 62When concentration reaches preset concentration, it is whole to adjust the threeway of third fan Valve 263, the 4th fan threeway rectifying valve 264 are flowed, keeps a port of third fan threeway rectifying valve 263, the 4th fan threeway whole Three ports of stream valve 264 are plugged, and are in a closed state down coal sample tank 10, humidity sensor 13, pressure sensor 14, Data acquisition transmission module 20 acquires the pressure data that pressure sensor 14 monitors and is transferred to data storage processing unit 21；
In step 8, the partial size for changing coal sample in experiment initial temperature or coal sample tank 10, by analyzing the variation of pressure, Study the relationship discharged between the intensity of gas and experiment initial temperature or coal sample partial size after coal body is crushed.To by primary The measurement of coal gasresolution dynamic change at a temperature of varying environment is completed in experiment.
In the present embodiment four, in step 6, when needing is in coal sample tank 10 under closed state, micro valve is closed 27。
Embodiment five
The present embodiment five and the difference of above-described embodiment one are:
In step 1, oxidation of coal water is carried out using multifunctional coal oxidation characteristic experimental provision of the invention generate rate reality It tests；
In step 6, as the O in gas sensor room 62When concentration reaches preset concentration, it is whole to adjust the threeway of third fan Valve 263, the 4th fan threeway rectifying valve 264 are flowed, keeps two ports of third fan threeway rectifying valve 263, the 4th fan threeway whole Three ports of stream valve 264 are plugged, and are in a closed state down coal sample tank 10, humidity sensor 13, data acquisition transmission Module 20 acquires the humidity data that humidity sensor 13 monitors and is transferred to data storage processing unit 21, until humidity reaches 100%；
In step 8, change the partial size or the O in external source gas of coal sample in experiment initial temperature or coal sample tank 102Concentration, By analyzing the variation of humidity, research oxidation of coal water generates rate and experiment initial temperature or coal sample partial size or O2Between concentration Relationship.To complete the measurement that oxidation of coal water under different oxygen concentrations generates rate by once experiment.
In the present embodiment five, in step 6, when needing is in coal sample tank 10 under closed state, micro valve is closed 27。
Embodiment six
The present embodiment six and the difference of above-described embodiment one are:
In step 1, coal shortest spontaneous combustion period reality is carried out using multifunctional coal oxidation characteristic experimental provision of the invention It tests；
In step 6, each Marking Gas of Coal Spontaneous Combustion Marking Gas of Coal Spontaneous Combustion test experience obtained generates temperature In minimum temperature be set as temperature upper limit, when the temperature in coal sample tank 10 reaches temperature upper limit, stop experiment；
In step 8, the partial size or external source gas flow for changing coal sample in experiment initial temperature or coal sample tank 10, by dividing Analysis reaches the time of temperature upper limit, Study on Coal shortest spontaneous combustion period and experiment initial temperature or coal sample partial size or external source gas stream Relationship between amount.
Embodiment seven
The present embodiment seven and the difference of above-described embodiment one are:
In step 1, oxidation of coal characteristic gas concentration is carried out using multifunctional coal oxidation characteristic experimental provision of the invention Variation coefficient measurement experiment；
In step 6, as the O in gas sensor room 62When concentration reaches preset concentration, it is whole to adjust the 6th fan threeway Valve 266, the 7th fan threeway rectifying valve 267 are flowed, the 6th fan threeway rectifying valve 266, the 7th fan threeway rectifying valve 267 are made Two ports are plugged, and form closed circulation pipeline；
In step 8, the partial size or external source gas flow for changing coal sample in experiment initial temperature or coal sample tank 10, by dividing Analyse O2Concentration, CO concentration, CO2The variation of concentration, Study on Coal coefficient of oxygen consuming, CO generate coefficient, CO2It generates coefficient and experiment originates Temperature or coal sample partial size or external source gas flow or O2Relationship between concentration.
In the present embodiment seven, in step 6, when needing to form closed circulation pipeline, micro valve 27 is closed.
Wherein, in step 6, coal sample carries out oxygen consumption, O under closed circulation pipeline condition2Concentration gradually decreases, so as to Access different O2Coal consumption oxygen quotient, CO under concentration generate coefficient, CO2The data of coefficient are generated, so as to once test Coal consumption oxygen quotient, CO generate coefficient, CO under middle research specific temperature2Generate coefficient and O2Relationship between concentration.
Obviously, above-described embodiment is only a part of the embodiments of the present invention, instead of all the embodiments.Above-mentioned implementation Example for explaining only the invention, is not intended to limit the scope of the present invention..Based on the above embodiment, those skilled in the art Member's every other embodiment obtained namely all in spirit herein and original without making creative work Made all modifications, equivalent replacement and improvement etc., are all fallen within the protection domain of application claims within reason.

Claims (10)

1. a kind of multifunctional coal oxidation characteristic experimental provision, it is characterised in that: including temperature programmed control case (1), data storage processing Unit (21)；Described program temperature-controlled box (1) includes cabinet, control area (2), oxidation of coal workspace (3), gas cooling circulating air Road, in box house, the gas cooling circulation gas circuit is arranged in cabinet for the control area (2), oxidation of coal workspace (3) setting Outside；
The control area (2) includes closed circulation air pump (7), the first gas circuit (24), the second gas circuit (25), the first external source gas port (231), the second external source gas port (232), the first drying tube (8), the second air inlet pipeline (34), Bidirectional temperature-controlling switch (22), number According to acquisition transmission module (20), gas sensor room (6), micro valve (27), equal dabbing tubule (17), the second drying tube (18), the second outlet pipe (36)；
The outlet of the closed circulation air pump (7) passes through two gas of the first gas circuit (24) and the 5th fan threeway rectifying valve (265) Mouth is connected, and the entrance of the closed circulation air pump (7) is connected with three ports of the 9th fan threeway rectifying valve (269), institute Two ports for stating the 9th fan threeway rectifying valve (269) pass through the second gas circuit (25) and the 5th fan threeway rectifying valve (265) One port is connected, and the one of three ports of the 5th fan threeway rectifying valve (265) and the 6th fan threeway rectifying valve (266) Port is connected, and two ports of the 6th fan threeway rectifying valve (266) are connected with the first external source gas port (231), institute Three ports for stating the 6th fan threeway rectifying valve (266) are connected with a port of the 7th fan threeway rectifying valve (267), described Two ports of the 7th fan threeway rectifying valve (267) are connected with the second external source gas port (232), and the 7th fan threeway is whole Three ports of stream valve (267) are connected with the entrance of the first drying tube (8), the outlet of first drying tube (8) and the 8th fan One port of type threeway rectifying valve (268) is connected, two ports of the 8th fan threeway rectifying valve (268) by second into Air pipe (34) is connected with a port of the 4th fan threeway rectifying valve (264)；
One port of the 9th fan threeway rectifying valve (269) is connected with the outlet of gas sensor room (6), the gas Transducer room (6) is equipped with electronic type gas detecting instrument group in inside, and the gas sensor room (6) is through micro valve (27) and One end of dabbing tubule (17) is connected, and the equal dabbing tubule (17) is connected in the other end with the second drying tube (18), institute The entrance for stating gas sensor room (6) is connected with three ports of the first fan threeway rectifying valve (261), first fan three Two ports of logical rectifying valve (261) pass through a port phase of the second outlet pipe (36) and the second fan threeway rectifying valve (262) Connection；
The oxidation of coal workspace (3) include coal sample tank (10), temperature control module, humidity sensor (13), pressure sensor (14), Preheat pipeline (9), the first outlet pipe (35)；The temperature control module setting is in oxidation of coal workspace (3) inside, coal sample tank (10) It is external；The coal sample tank (10) includes coal sample tank upper cover (11), coal sample tank lower cover (12), temp probe (19), heat balls (33), The coal sample tank upper cover (11) is equipped with coal sample canister incoming gas interface (111) in inside, and the coal sample tank lower cover (12) is equipped in inside Coal sample tank outlet interface, the heat balls (33), temp probe (19) are arranged in coal sample tank (10) interior coal sample；Described 8th Three ports of fan threeway rectifying valve (268) are connected with one end of preheating pipeline (9), the other end of preheating pipeline (9) Be connected with two ports of the 4th fan threeway rectifying valve (264), three ports of the 4th fan threeway rectifying valve (264) with Coal sample canister incoming gas interface (111) is connected, and the coal sample tank outlet interface is connected with one end of humidity sensor (13), described The other end of humidity sensor (13) is connected with two ports of third fan threeway rectifying valve (263), the third fan three Three ports of logical rectifying valve (263) are connected with pressure sensor (14), a gas of the third fan threeway rectifying valve (263) Mouth is connected by the first outlet pipe (35) with three ports of the second fan threeway rectifying valve (262)；
The gas cooling circulation gas circuit includes flowmeter (5), flow control valve (28), the first air inlet pipeline (4), collection bottle (16), gas cooling pipe (15)；Two ports of one end of the gas cooling pipe (15) and the second fan threeway rectifying valve (262) It is connected, the other end of the gas cooling pipe (15) is connected with the air inlet of collection bottle (16), the collection bottle (16) Gas outlet is connected with the one end of the first air inlet pipeline (4), the other end and flowmeter (5) of first air inlet pipeline (4) One end is connected to flow control valve (28), a gas of the flowmeter (5) in the other end and the first fan threeway rectifying valve (261) Mouth is connected；
The data line of each electronic type gas detecting instrument, temperature control module, temperature in the electronic type gas detecting instrument group It pops one's head in (19), heat balls (33), humidity sensor (13), pressure sensor (14) acquire the defeated of transmission module (20) with data Enter end electrical connection, the output end of data acquisition transmission module (20) and the input terminal of data storage processing unit (21) are electrically connected It connects；The detection control line of each electronic type gas detecting instrument, Bidirectional temperature-controlling switch (22) in the electronic type gas detecting instrument group It is electrically connected with the output end of data storage processing unit (21), the temperature control module, heat balls (33) are opened with Bidirectional temperature-controlling Close (22) electrical connection.
2. multifunctional coal oxidation characteristic experimental provision according to claim 1, which is characterized in that the data storage processing Unit (21) is the host computer comprising electronic program needed for oxidation of coal characterization experiments；The temperature control module is used to work to oxidation of coal Temperature in area (3) carries out record and is transferred to data storage processing unit (21), institute by data acquisition transmission module (20) Temp probe (19) are stated for carrying out record to the temperature in coal sample tank (10) and by data acquisition transmission module (20) transmission It gives data storage processing unit (21), the heat balls (33) are used to the temperature of heat balls (33) acquiring transmission mould by data Block (20) is transferred to data storage processing unit (21), and the data storage processing unit (21) is used for oxidation of coal workspace (3) temperature in, the temperature in coal sample tank (10), the temperature of heat balls (33) handle and transmission telecommunications number is to Bidirectional temperature-controlling It switchs (22), the Bidirectional temperature-controlling switch (22) is for control temperature control module based on the received electrical signal to oxidation of coal workspace (3) temperature in, which is adjusted, controls heat balls (33) is adjusted the temperature in coal sample tank (10).
3. multifunctional coal oxidation characteristic experimental provision according to claim 1, which is characterized in that the first fan threeway Rectifying valve (261), the second fan threeway rectifying valve (262), third fan threeway rectifying valve (263), the 4th fan threeway rectification Valve (264), the 5th fan threeway rectifying valve (265), the 6th fan threeway rectifying valve (266), the 7th fan threeway rectifying valve (267), the 8th fan threeway rectifying valve (268), the 9th fan threeway rectifying valve (269) structure are identical；First fan three Logical rectifying valve (261) include valve body (32), and the valve body (32) is equipped with the port (321) for being respectively facing different directions, two Port (322), three ports (323), the valve body (32) is internal to be equipped with fan spool (31), and the fan spool (31) is connected with It rectifies knob (30)；The valve body (32) is embedded with sealing joint strip in inner wall, and the fan spool (31) is that central angle cone is real The heart design, the circular cone cambered surface of the fan spool (31) post sealing joint strip and with a port (321), two ports (322), three gas The cross section of mouth (323) coincide, and rectification knob (30) is used to adjust the rotation angle of fan spool (31).
4. multifunctional coal oxidation characteristic experimental provision according to claim 1, which is characterized in that the coal sample tank (10) is also Including the first pore sieve (291), the second pore sieve (292), the coal sample tank upper cover (11) is equipped with first equidistantly in bottom Close screen mesh (112), the coal sample tank lower cover (12) are equipped with the second equidistant close screen mesh, the first pore sieve at top (291) setting is below the first equidistant close screen mesh (112), above the interior coal sample top layer of coal sample tank (10), second fine ga(u)ge screen Net (292) is arranged above the second equidistant close screen mesh, below the interior coal sample bottom of coal sample tank (10), the described first equidistant close hole sizer Net (112), the second equidistant close screen mesh are equidistant concentric ring type hard sieve；
Tank body, coal sample tank upper cover (11), the coal sample tank lower cover (12) of the coal sample tank (10) are all made of high temperature resistant and high pressure resistant material Matter, the coal sample tank upper cover (11), coal sample tank lower cover (12) are filled with heat preserving and insulating material in respective middle section；
In the solid center of gravity of coal sample tank (10) interior coal sample, the heat balls (33) are electric heating for heat balls (33) setting Type；The temp probe (19) have it is multiple, the temp probe (19) and data acquisition transmission module (20) between connection lead Line passes through the mesh on the first equidistant close screen mesh (112), and the temp probe (19) is vertically embedded to coal sample tank (10) interior coal sample In.
5. multifunctional coal oxidation characteristic experimental provision according to claim 1, which is characterized in that the electronic type gas inspection Surveying instrument group includes O2Detector, carbon monoxide detector, CO2Detector, CH4Detector, C2H4Detector, C2H2Detector, N2Detector.
6. multifunctional coal oxidation characteristic experimental provision according to claim 1, which is characterized in that the collection bottle (16) is Quartzy bottle with range；The gas cooling pipe (15) is spiral shape, and first air inlet pipeline (4) passes through gas cooling pipe (15) spiral space enclosed.
7. a kind of application method of such as multifunctional coal oxidation characteristic experimental provision described in any one of claims 1 to 6, special Sign is, includes the following steps:
Step 1: the type of the determination oxidation of coal characterization experiments to be carried out, log-on data storage processing unit (21)；The coal oxygen The type of change characterization experiments aoxidizes heating experiment for coal spontaneous combustion, Marking Gas of Coal Spontaneous Combustion test experience, coal thermal coefficient are tested, Coal gas release experiment, oxidation of coal water generate rate experiments, the experiment of coal shortest spontaneous combustion period, the change of oxidation of coal characteristic gas concentration Change coefficient determination and tests one of this seven kinds experiments；
Step 2: according to the type for the oxidation of coal characterization experiments to be carried out, adjusting the first fan threeway rectifying valve (261) to the 9th The rectification knob of each fan threeway rectifying valve is in fan threeway rectifying valve (269) to adjust each port of each fan threeway rectifying valve On-off, start closed circulation air pump (7)；
Step 3: setting external source gas as N2, external source gas is passed through by the second external source gas port (232), from the first external source gas Mouth (231) discharge, ambient atmos adjust the miniature valve by entering equal dabbing tubule (17) after the second drying tube (18) drying Door (27) presses degree to adjust, and the electronic type gas detecting instrument group is to the O in gas sensor room (6)2Concentration, CO are dense Degree, CO2Concentration, CH4Concentration, C2H4Concentration, C2H2Concentration, N2Concentration is monitored and each concentration data is passed through data line It is transferred to data storage processing unit (21) through data acquisition transmission module (20), the temp probe (19) is to coal sample tank (10) Interior temperature carries out record and is transferred to data storage processing unit (21) by data acquisition transmission module (20)；
Step 4: if the type of the oxidation of coal characterization experiments is coal spontaneous combustion oxidation heating experiment or coal gas release experiment or coal It aoxidizes water and generates rate experiments or the experiment of coal shortest spontaneous combustion period or oxidation of coal characteristic gas concentration variation coefficient measurement experiment, Then startup program temperature-controlled box (1) sets experiment initial temperature as original coal sample location by data storage processing unit (21) Point temperature, the temperature control module record to the temperature in oxidation of coal workspace (3) and acquire transmission module by data (20) it is transferred to data storage processing unit (21), data storage processing unit (21) passes through Bidirectional temperature-controlling switch (22) control control The temperature in oxidation of coal workspace (3) is adjusted in warm module, makes temperature and coal sample tank (10) in oxidation of coal workspace (3) Interior temperature is consistent；
If the type of the oxidation of coal characterization experiments be Marking Gas of Coal Spontaneous Combustion test experience, startup program temperature-controlled box (1), Experiment initial temperature is set by data storage processing unit (21), data storage processing unit (21) is switched by Bidirectional temperature-controlling (22) temperature in coal sample tank (10) is adjusted in control heat balls (33), and data acquire transmission module (20) and acquire heat balls (33) temperature is simultaneously transferred to data storage processing unit (21)；
If the type of the oxidation of coal characterization experiments is the experiment of coal thermal coefficient, startup program temperature-controlled box (1) is deposited by data It stores up processing unit (21) and sets the experimental temperature upper limit；
Step 5: if the type of the oxidation of coal characterization experiments is coal spontaneous combustion oxidation heating experiment or Marking Gas of Coal Spontaneous Combustion inspection It surveys experiment or oxidation of coal water generates rate experiments or the experiment of coal shortest spontaneous combustion period or oxidation of coal characteristic gas concentration variation system Foreign gas structural reform is containing 21%O then when the temperature in coal sample tank (10) reaches experiment initial temperature by number measurement experiment2's Mixed gas enters step 6；
If the type of the oxidation of coal characterization experiments is the experiment of coal thermal coefficient or coal gas release experiment, it is directly entered step 6；
Step 6: if the type of the oxidation of coal characterization experiments is coal spontaneous combustion oxidation heating experiment, being directly entered step 7；
If the type of the oxidation of coal characterization experiments is Marking Gas of Coal Spontaneous Combustion test experience, contain when being full of in test pipeline 21%O2Mixed gas after, adjust the 6th fan threeway rectifying valve (266), the 7th fan threeway rectifying valve (267), make the 6th Fan threeway rectifying valve (266), the 7th fan threeway rectifying valve (267) two ports be plugged, formed closed circulation pipeline, Make coal sample after continuing 30 seconds under testing initial temperature, readjusts the 6th fan threeway rectifying valve (266), the 7th fan threeway Rectifying valve (267) makes three ports of the 6th fan threeway rectifying valve (266), a port of the 7th fan threeway rectifying valve (267) It is plugged, opens test pipeline, eluting gas is collected at the first external source gas port (231), passes through high-precision gas-chromatography Instrument detects the type of eluting gas, type and each coal by data storage processing unit (21) record Marking Gas of Coal Spontaneous Combustion The temperature that spontaneous combustion gas marker generates；
If the type of the oxidation of coal characterization experiments is the experiment of coal thermal coefficient, the N in gas sensor room (6)2Concentration reaches When to preset concentration, third fan threeway rectifying valve (263), the 4th fan threeway rectifying valve (264) are adjusted, third fan three is made Two ports of logical rectifying valve (263), three ports of the 4th fan threeway rectifying valve (264) are plugged, and make coal sample tank (10), wet Degree sensor (13) is under closed state, and data storage processing unit (21) is controlled by Bidirectional temperature-controlling switch (22) The temperature in coal sample tank (10) is adjusted in heat balls (33), and data acquire the temperature of transmission module (20) acquisition heat balls (33) It spends and is transferred to data storage processing unit (21), the heat balls when the temperature in coal sample tank (10) reaches the experimental temperature upper limit (33) stop heating, keep coal sample cooling；
If the type of the oxidation of coal characterization experiments is coal gas release experiment, the N in gas sensor room (6)2Concentration reaches When preset concentration, third fan threeway rectifying valve (263), the 4th fan threeway rectifying valve (264) are adjusted, third fan threeway is made One port of rectifying valve (263), the 4th fan threeway rectifying valve (264) three ports be plugged, make coal sample tank (10), humidity Sensor (13), pressure sensor (14) are in a closed state down, and data acquire transmission module (20) and acquire pressure sensor (14) monitor pressure data and be transferred to data storage processing unit (21)；
If the type of the oxidation of coal characterization experiments is that oxidation of coal water generates rate experiments, the O in gas sensor room (6)2 When concentration reaches preset concentration, third fan threeway rectifying valve (263), the 4th fan threeway rectifying valve (264) are adjusted, third is made Two ports of fan threeway rectifying valve (263), the 4th fan threeway rectifying valve (264) three ports be plugged, make coal sample tank (10), humidity sensor (13) is in a closed state down, and data acquire transmission module (20) acquisition humidity sensor (13) prison The humidity data of survey is simultaneously transferred to data storage processing unit (21), until humidity reaches 100%；
If the type of the oxidation of coal characterization experiments is the experiment of coal shortest spontaneous combustion period, Marking Gas of Coal Spontaneous Combustion is detected The minimum temperature that each Marking Gas of Coal Spontaneous Combustion that experiment obtains generates in temperature is set as temperature upper limit, when in coal sample tank (10) When temperature reaches temperature upper limit, stop experiment；
If the type of the oxidation of coal characterization experiments is oxidation of coal characteristic gas concentration variation coefficient measurement experiment, when gas passes O in sensor room (6)2When concentration reaches preset concentration, the 6th fan threeway rectifying valve (266) of adjusting, the 7th fan threeway are whole It flows valve (267), is plugged two ports of the 6th fan threeway rectifying valve (266), the 7th fan threeway rectifying valve (267), Form closed circulation pipeline；
Step 7: saving experimental data by data storage processing unit (21)；The experimental data includes in coal sample tank (10) Temperature, the temperature in oxidation of coal workspace (3), the temperature of heat balls (33), the O in gas sensor room (6)2Concentration, CO are dense Degree, CO2Concentration, CH4Concentration, C2H4Concentration, C2H2Concentration, N2Concentration, the humidity data of humidity sensor (13) monitoring, pressure pass The categorical data and each coal for the Marking Gas of Coal Spontaneous Combustion that pressure data, the high-precision gas chromatograph of sensor (14) monitoring detect The temperature that spontaneous combustion gas marker generates.
8. the application method of multifunctional coal oxidation characteristic experimental provision according to claim 7, which is characterized in that the step In rapid 3, external source gas is passed through by the second external source gas port (232), flows through the 7th fan threeway rectifying valve (267) and first In drying tube (8) it is dry after, enter in preheating pipeline (9) preheating by the 8th fan threeway rectifying valve (268) or enter second Air inlet pipeline (34) enters coal sample tank (10) by coal sample canister incoming gas interface (111) by the 4th fan threeway rectifying valve (264), It is flowed out again by coal sample tank outlet interface, successively by first after humidity sensor (13), third fan threeway rectifying valve (263) Outlet pipe (35) recycles gas circuit into gas cooling or enters the second outlet pipe to the second fan threeway rectifying valve (262) (36), gas sensor room (6) are entered by the first fan threeway rectifying valve (261), then through the 9th fan threeway rectifying valve (269) closed circulation air pump (7) are flowed into, then flows through the 5th fan threeway rectifying valve (265), the 6th fan from the first gas circuit (24) It is discharged after type threeway rectifying valve (266) from the first external source gas port (231)；
If the type of the oxidation of coal characterization experiments is that coal spontaneous combustion oxidation heating experiment or oxidation of coal water generate rate experiments or coal Shortest spontaneous combustion period is tested or oxidation of coal characteristic gas concentration variation coefficient measurement experiment, in the step 2, adjusts each fan The rectification knob of threeway rectifying valve makes the fan spool of the 7th fan threeway rectifying valve (267) block one port, makes the 8th fan The fan spool of type threeway rectifying valve (268) is blocked secondly port, keeps the fan spool of the 4th fan threeway rectifying valve (264) stifled Firmly one port blocks the fan spool of third fan threeway rectifying valve (263) thirdly port, rectifies the second fan threeway The fan spool of valve (262) blocks one port, blocks the fan spool of the first fan threeway rectifying valve (261) secondly gas Mouthful, block the fan spool of the 9th fan threeway rectifying valve (269) secondly port, makes the 5th fan threeway rectifying valve (265) Fan spool block one port, block the fan spool of the 6th fan threeway rectifying valve (266) thirdly port, adjust stream Control valve (28), which determines, tests required external source gas flow, and in the step 3, external source gas is rectified by the 8th fan threeway Valve (268) enters preheating in preheating pipeline (9), enters gas cooling circulating air afterwards by the second fan threeway rectifying valve (262) Road is introduced into gas cooling pipe (15), and the cooling liquid water generated is saved in collection bottle (16), and gas after cooling is successively By the first air inlet pipeline (4), flowmeter (5) to the first fan threeway rectifying valve (261)；
If the type of the oxidation of coal characterization experiments is coal gas release experiment, in the step 2, each fan threeway rectification is adjusted The rectification knob of valve makes the fan spool of the 7th fan threeway rectifying valve (267) block one port, keeps the 8th fan threeway whole The fan spool of stream valve (268) is blocked secondly port, makes the fan spool of the 4th fan threeway rectifying valve (264) block one gas Mouthful, block the fan spool of third fan threeway rectifying valve (263) thirdly port, makes the second fan threeway rectifying valve (262) Fan spool block secondly port, makes the fan spool of the first fan threeway rectifying valve (261) block one port, make the 9th The fan spool of fan threeway rectifying valve (269) is blocked secondly port, makes the fan spool of the 5th fan threeway rectifying valve (265) One port is blocked, blocks the fan spool of the 6th fan threeway rectifying valve (266) thirdly port, in the step 3, external source Gas enters preheating in preheating pipeline (9) by the 8th fan threeway rectifying valve (268), passes through the second fan threeway rectifying valve (262) enter the second outlet pipe (36) afterwards；
If the type of the oxidation of coal characterization experiments is Marking Gas of Coal Spontaneous Combustion test experience or the experiment of coal thermal coefficient, institute It states in step 2, adjusts the rectification knob of each fan threeway rectifying valve, make the fan spool of the 7th fan threeway rectifying valve (267) One port is blocked, blocks the fan spool of the 8th fan threeway rectifying valve (268) thirdly port, keeps the 4th fan threeway whole The fan spool of stream valve (264) is blocked secondly port, blocks the fan spool of third fan threeway rectifying valve (263) thirdly gas Mouthful, block the fan spool of the second fan threeway rectifying valve (262) secondly port, makes the first fan threeway rectifying valve (261) Fan spool block one port, block the fan spool of the 9th fan threeway rectifying valve (269) secondly port, makes the 5th The fan spool of fan threeway rectifying valve (265) blocks one port, makes the fan spool of the 6th fan threeway rectifying valve (266) It blocks thirdly port, in the step 3, external source gas enters the second air inlet pipeline by the 8th fan threeway rectifying valve (268) (34), the second outlet pipe (36) are entered afterwards by the second fan threeway rectifying valve (262).
9. the application method of multifunctional coal oxidation characteristic experimental provision according to claim 8, which is characterized in that the step In rapid 6, when needing to form closed circulation pipeline or being in coal sample tank (10) under closed state, close micro valve (27).
10. the application method of multifunctional coal oxidation characteristic experimental provision according to claim 9, which is characterized in that also wrap Step 8 is included, the step 8 includes:
If the type of the oxidation of coal characterization experiments is coal spontaneous combustion oxidation heating experiment, change experiment initial temperature or coal sample tank (10) partial size of interior coal sample or the degree of metamorphism of coal sample or in one experiment change external source gas flow, pass through coal sampling tank (10) temperature change in, the heating of Study on Coal spontaneous combustion oxidation is with experiment initial temperature or coal sample partial size or coal sample degree of metamorphism or outside Relationship between source gas flow；
If the type of the oxidation of coal characterization experiments be Marking Gas of Coal Spontaneous Combustion test experience, change experiment initial temperature or The partial size of coal sample tank (10) interior coal sample or the degree of metamorphism of coal sample or the O in external source gas2Concentration, by analyzing coal spontaneous combustion mark Property gas type and each Marking Gas of Coal Spontaneous Combustion generate temperature, study Marking Gas of Coal Spontaneous Combustion type and each coal from Fire the temperature and experiment initial temperature or coal sample partial size or coal sample degree of metamorphism or O that gas marker generates2Relationship between concentration；
If the type of the oxidation of coal characterization experiments is the experiment of coal thermal coefficient, change the experimental temperature upper limit or coal sample tank (10) The partial size of interior coal sample or the humidity of coal sample, by the temperature change in coal sampling tank (10), Study on Coal thermal coefficient and experiment Relationship between temperature upper limit or coal sample partial size or coal sample humidity；
If the type of the oxidation of coal characterization experiments is coal gas release experiment, change experiment initial temperature or coal sample tank (10) The partial size of interior coal sample, by analyzing the variation of pressure, discharged after research coal body is broken gas intensity and experiment initial temperature or Relationship between coal sample partial size；
If the type of the oxidation of coal characterization experiments is that oxidation of coal water generates rate experiments, change experiment initial temperature or coal sample The partial size or the O in external source gas of tank (10) interior coal sample2Concentration, by analyzing the variation of humidity, research oxidation of coal water generates speed Rate and experiment initial temperature or coal sample partial size or O2Relationship between concentration；
If the type of the oxidation of coal characterization experiments is the experiment of coal shortest spontaneous combustion period, change experiment initial temperature or coal sample The partial size or external source gas flow of tank (10) interior coal sample reach the time of temperature upper limit by analyzing, and Study on Coal is most short to be sent out naturally Relationship between fiery phase and experiment initial temperature or coal sample partial size or external source gas flow；
If the type of the oxidation of coal characterization experiments is oxidation of coal characteristic gas concentration variation coefficient measurement experiment, change experiment The partial size or external source gas flow of initial temperature or coal sample tank (10) interior coal sample, by analyzing O2Concentration, CO concentration, CO2Concentration Variation, Study on Coal coefficient of oxygen consuming, CO generate coefficient, CO2Generate coefficient and experiment initial temperature or coal sample partial size or external source gas Flow or O2Relationship between concentration.
CN201910699191.8A 2019-07-31 2019-07-31 A kind of multifunctional coal oxidation characteristic experimental provision and its application method Pending CN110412074A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910699191.8A CN110412074A (en) 2019-07-31 2019-07-31 A kind of multifunctional coal oxidation characteristic experimental provision and its application method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910699191.8A CN110412074A (en) 2019-07-31 2019-07-31 A kind of multifunctional coal oxidation characteristic experimental provision and its application method

Publications (1)

Publication Number Publication Date
CN110412074A true CN110412074A (en) 2019-11-05

Family

ID=68364403

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201910699191.8A Pending CN110412074A (en) 2019-07-31 2019-07-31 A kind of multifunctional coal oxidation characteristic experimental provision and its application method

Country Status (1)

Country Link
CN (1) CN110412074A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113030372A (en) * 2021-03-24 2021-06-25 西安科技大学 Drought area environment simulation coal natural ignition test device and method
CN113960243A (en) * 2021-11-02 2022-01-21 宁波工程学院 Control experiment system and method for rapidly determining adiabatic natural ignition period of coal
CN114544703A (en) * 2022-01-18 2022-05-27 北京科技大学 Device and method for measuring oxidation temperature rise characteristics of pressurized coal body under multi-atmosphere environmental load

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2570646Y (en) * 2002-08-30 2003-09-03 济南钢铁股份有限公司 Switching valve for double heat storage type combustion system
CN102661975A (en) * 2012-04-20 2012-09-12 华电环保系统工程有限公司 Method and device for continuously monitoring flue gas acid dew point at tail part of coal burning boiler on line
CN103399035A (en) * 2013-07-30 2013-11-20 辽宁工程技术大学 Multi-functional coal sample spontaneous combustion oxidizing and warming experimental apparatus
KR101364000B1 (en) * 2012-11-14 2014-02-17 한국에너지기술연구원 Coal spontaneous combustion measuring apparatus
CN204924842U (en) * 2015-07-09 2015-12-30 桂林电子科技大学 Portable mining blow detector
CN105899943A (en) * 2014-01-15 2016-08-24 株式会社神户制钢所 Spontaneous combustion prediction method for coal

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2570646Y (en) * 2002-08-30 2003-09-03 济南钢铁股份有限公司 Switching valve for double heat storage type combustion system
CN102661975A (en) * 2012-04-20 2012-09-12 华电环保系统工程有限公司 Method and device for continuously monitoring flue gas acid dew point at tail part of coal burning boiler on line
KR101364000B1 (en) * 2012-11-14 2014-02-17 한국에너지기술연구원 Coal spontaneous combustion measuring apparatus
CN103399035A (en) * 2013-07-30 2013-11-20 辽宁工程技术大学 Multi-functional coal sample spontaneous combustion oxidizing and warming experimental apparatus
CN105899943A (en) * 2014-01-15 2016-08-24 株式会社神户制钢所 Spontaneous combustion prediction method for coal
CN204924842U (en) * 2015-07-09 2015-12-30 桂林电子科技大学 Portable mining blow detector

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
杨永良 等: "《煤自燃特性及煤堆自燃防治技术研究》", 31 January 2016, 中国矿业大学出版社 *
蒋承林 等: "《矿井瓦斯灾害防治与利用》", 30 June 2013, 中国矿业大学出版社 *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113030372A (en) * 2021-03-24 2021-06-25 西安科技大学 Drought area environment simulation coal natural ignition test device and method
CN113030372B (en) * 2021-03-24 2024-04-12 西安科技大学 Device and method for testing natural ignition of simulated coal in arid region environment
CN113960243A (en) * 2021-11-02 2022-01-21 宁波工程学院 Control experiment system and method for rapidly determining adiabatic natural ignition period of coal
CN114544703A (en) * 2022-01-18 2022-05-27 北京科技大学 Device and method for measuring oxidation temperature rise characteristics of pressurized coal body under multi-atmosphere environmental load

Similar Documents

Publication Publication Date Title
CN110412074A (en) A kind of multifunctional coal oxidation characteristic experimental provision and its application method
CN104111145B (en) Combustible refrigerant reveals apparatus for measuring concentration
CN109313100A (en) Valve pressure-proof inspection device and its inspection method and hydrogen detection unit
CN201327427Y (en) Temperature and humidity measurement calibrating device
CN209432776U (en) Gas-liquid phase pipe experimental provision
CN109164393A (en) Battery thermal runaway experimental provision, system and method
CN106124357A (en) A kind of multi-functional coal sample heating and oxidation rule test platform of automatic sampling
CN108872877A (en) Battery thermal runaway experimental provision and its system
CN107449864A (en) A kind of more scene cable fire Gas Parameters evaluation and test platforms and evaluating method
US20140175083A1 (en) Digital Multi-Use Thermo-Cup
CN206772964U (en) Simulate coal yard storage determining coal ignitability device
CN107449847A (en) The chromatography of Period of Coal Seam Spontaneous Combustion symbolic gas and index preferably determine device
CN204142664U (en) A kind of miniature calorimeter
CN109632879B (en) Visual macroscopic thermogravimetric analyzer for briquette coal combustion
CN208872855U (en) Battery thermal runaway experimental provision and its system
CN107064208A (en) A kind of universal calorimetric biosensor
TW202020427A (en) Test system of dew point sensor capable of saving costs and providing a stable test environment for the dew point sensor
CN205719864U (en) liquid viscosity coefficient testing device
CN105784931B (en) Temperature automatically controlled use for laboratory gas sensor test case
CN106596902A (en) Portable full-automatic apparatus for testing hydrogen sulfide in petroleum products
CN205388571U (en) Portable micro - gas composition apparatus
CN108801848A (en) A kind of intelligent constant-temperature calibrating liquid densimeter experimental rig
CN207067095U (en) A kind of more scene cable fire Gas Parameters evaluation and test platforms
CN100507559C (en) Device for investigating coal self-combustion tendentiousness based on low temp oxidation oxygen consumption
KR20140142541A (en) Moisture transmission testing instrument

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
AD01 Patent right deemed abandoned

Effective date of abandoning: 20220830

AD01 Patent right deemed abandoned