【摘要】：為研究煤粉在貧氧條件下的自燃特性,利用TG/DSC-FTIR聯(lián)用技術(shù)測(cè)試了顧北氣煤在不同氧氣濃度氣氛下的燃燒放熱過(guò)程,分析了貧氧條件下特征溫度點(diǎn)、TG、DSC曲線的變化規(guī)律,通過(guò)紅外光譜技術(shù)研究了CO、CO_2的釋放規(guī)律,采用積分法計(jì)算了活性溫度點(diǎn)到著火點(diǎn)的活化能變化規(guī)律。研究表明:貧氧條件下,煤氧復(fù)合反應(yīng)仍然能夠持續(xù),特征溫度點(diǎn)在高溫氧化階段呈增大趨勢(shì),TG、DSC曲線向高溫區(qū)偏移,CO、CO_2的峰值溫度升高,增重階段至燃燒階段的活化能變化不大。
[Abstract]:In order to study the spontaneous combustion characteristics of pulverized coal under the condition of poor oxygen, the combustion and exothermic process of Gubei gas coal in different oxygen concentration atmosphere was tested by TG/DSC-FTIR technique. The characteristic temperature point, TG, under the condition of oxygen deficiency were analyzed. The variation of DSC curve was studied by infrared spectroscopy, and the activation energy from active temperature to ignition point was calculated by integral method. The results show that the complex reaction of coal and oxygen can continue under the condition of oxygen deficiency, the characteristic temperature point increases in the high temperature oxidation stage, the TG,DSC curve shifts to the high temperature region, and the peak temperature of CO,CO_2 increases. The activation energy from the weight increasing stage to the combustion stage has little change.
【作者單位】： 西安科技大學(xué)安全科學(xué)與工程學(xué)院;西部礦井開采及災(zāi)害防治教育部重點(diǎn)實(shí)驗(yàn)室;
【基金】：國(guó)家自然科學(xué)基金資助項(xiàng)目(51404192) 中國(guó)博士后科學(xué)基金資助項(xiàng)目(2015T81043) 陜西省自然科學(xué)基礎(chǔ)研究資助項(xiàng)目(2015JQ5174)
【分類號(hào)】：TD752.2

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1 劉國(guó)林，，楊立興;礦井高氮貧氧窒息事故研究[J];中國(guó)煤炭;1996年05期

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