【摘要】：為了研究林南倉礦煤的低溫氧化的動力學(xué)特性,選取來自不同煤層和采區(qū)的3個煤樣為實驗煤樣。通過工業(yè)分析和元素分析確定了煤的種類為中高揮發(fā)分煙煤,自燃等級為Ⅱ類自燃。分析熱重實驗結(jié)果將低溫氧化過程分為失重階段和增重階段,確定兩階段為一級化學(xué)反應(yīng),隨著反應(yīng)深入氧化所需的能量增加。升溫氧化實驗過程中氣體的質(zhì)量濃度和種類隨溫度升高而增加,利用電子自旋共振波譜儀研究不同氧化溫度下煤中自由基的數(shù)量,結(jié)果顯示自由基濃度出現(xiàn)先減小后增加的趨勢。從宏觀和微觀兩個角度提出隨著反應(yīng)程度的加深反應(yīng)所需能量以及氣體產(chǎn)物和自由基數(shù)量之間的關(guān)系,進一步揭示煤自燃的發(fā)展進程。
[Abstract]:In order to study the dynamic characteristics of coal oxidation at low temperature in Linnanchang Coal Mine, three coal samples from different coal seams and mining areas were selected as experimental coal samples. Through industrial analysis and elemental analysis, it was determined that the type of coal is medium and high volatile bituminous coal, and the spontaneous combustion grade is class 鈪，

本文編號：2394306