1、英文原文Experimental Study on Tendency of Coal Spontaneous Combustion Based on CO ConcentrationW ANG Cong-lu，Lecturer W U Ai-you，Lecturer CAI Kang-xu，Prof(School ofEnergy&Safety Engineering，Hunan University of ScienceTechnology，XiaIgtan 411201，China)Abstract： Through the pyrogenation experiments on fres
2、h and oxidized coal samples，the properties ofcoal spontaneous combustion of a coal mine in Pingxiang mining group were studied；and CO concentrations of different pyrogenation temperature of experiment samples were measuredThe changing rule of COconcentrations with temperature change is analyzedThe c
3、hanging rule of CO concentration is different forunit distinctionSo it is not appropriate to use a fixed value as a criterion to predict the coal spontaneous combustionThe results are meaningful in improving the accuracy of coal spontaneous combustion prediction and prevention of mine fireKey words：
4、 coal spontaneous combustion； pyrogenation； unit distinction；forecast and prediction1 introductionThe coal spontaneous combustion occurrence and the development are complex physical chemistry process， is the coal and the oxygen has theoxidizing reaction under the low temperature condition to have th
5、ethermal accumulation agglomeration and finally to cause thespontaneous combustion the result . Its physical change includes:The coal to the gas solution adsorption， the moisture contentevaporates and congeals， the heat conduction and so on; Chemicalchange including between coal and oxygen chemical
6、adsorption andchemical reaction. The coal mainly has the physisorption under the lowtemperature with the oxygen， after the physisorption achieves thebalance by the chemical adsorption primarily. Along with temperatureelevating， the chemical adsorption speed speeds up and further haschemical reaction
7、 j. The coal oxygen compound chemical change cancause the coal surface texture and the spatial structure change， itsinternal energy also can change and emit the quantity of heat alongwith it. The coal structure change is affecting the entire physicalchemistry change advancement， the concerned schola
8、r has made massiveresearch H. As a result of the coal spontaneous combustion process complexity， theexperimental study method application is more common. Because thedifferent coal mine between has the individual difference，therefore， regarding the specific coal mine， needs to burn through theconcret
9、e experimental analysis coal under the different condition theresultant appears the rule， for the accurate forecast， the forecastcoal spontaneous combustion ignition provides the basis. Chooses whatkind of target gas to take the judgement coal spontaneous combustionstage the monitor parameter， regar
10、ding enhances the coal spontaneouscombustion to forecast， the forecast reliability has the extremelyvital role. In order to synthesize reflected Pingsiang mining industrygroup some coal mine coal spontaneous combustion firingcharacteristic， uses this coal mine different place in thetemperature progr
11、am installment the thermal decomposition， separatesout the gas to use cc - l7A (Ver. 3) the gas phase color spectrometerto carry on the component analysis， carries on the screening and thechoice to the tentative data， determined the attribute coalspontaneous combustion rule the control parameter， is
12、 for the purposeof determining suits this coal mine the target gas， enhances the coalearly time spontaneous combustion forecast， the forecast accuracy，prevented the mine fire occurs， reduces the resources the loss，guarantees the coal mine security.2 experimental equipmentsExperimental system includi
13、ng 3 main parts: 1) oxidizes the thermal decomposition test installation， by the pot，the heating furnace and the heat preservation outer covering 3parts is composed. 2) coal warm examination and temperature control installment. The coalheats by 5 thermo-elements determines with 415 millivoltmeters;
14、the temperature control by buries controls warm in the centerpokes head in to complete， the sample temperature basis experimentsbeforehand prearranges the request hypothesis， after the coal warmachieved prearranges the temperature pauses l rain to take a sample. 3) is mad the type analysis system. T
15、he gas analysis uses Gc 17A (Vet.3) the gas phase color spectrometer， it is the present quite advancedgas type analysis system， may simultaneously examine the gas type aremore， and provides special-purpose data analysis software (Class-GC100software). This gas phase color spectrometer has followingc
16、haracteristic: (1) Automatic flow control system; (2) Automaticpressure control system; (3) Keyboard ease of operation; (4) Widedisplay monitor; (5) Wide measuring range FID; (6) Uses the sense oftouch type， the automatic way ignition; (7) Provides the userspecial-purpose function， reports to the police the function and theparameter locking function and so on. The experimental system concreteskeleton like attempts l to show.3 experimental works flow3.1
