【摘要】：以中溫煤瀝青的甲苯可溶組分為原料,進(jìn)行元素分析和TG/DTG分析,并且利用偏光顯微鏡、X射線單晶衍射儀、拉曼光譜以及相應(yīng)的分峰擬合等數(shù)學(xué)方法對(duì)熱轉(zhuǎn)化的產(chǎn)物進(jìn)行研究。以實(shí)驗(yàn)獲得的數(shù)據(jù)為基礎(chǔ),采用Flynn-Wall-Ozawa法和Kissinger-Akahira-Sunose法計(jì)算得到反應(yīng)活化能,采用Satava-Sastak法求解熱解反應(yīng)動(dòng)力學(xué)參數(shù)。實(shí)驗(yàn)結(jié)果表明,中溫瀝青中甲苯可溶組分的熱解反應(yīng)活化能為E=88.48kJ/mol,指前因子lgA=10.22,反應(yīng)級(jí)數(shù)為2級(jí),熱解反應(yīng)機(jī)理適合隨機(jī)成核及其隨后的增長(zhǎng)模型。1 000℃焙燒后的炭化產(chǎn)物的光學(xué)顯微組分含量為:鑲嵌型23.74%,粗纖維型14.80%,細(xì)纖維17.88%,大片結(jié)構(gòu)30.45%。由XRD研究結(jié)果可知,趨于規(guī)整結(jié)構(gòu)的碳微晶含量為41.86%。Raman光譜分析研究結(jié)果表明,石墨結(jié)構(gòu)的碳微晶含量為11.59%,缺陷石墨碳含量為79.31%,無定形碳含量為9.10%。熱轉(zhuǎn)化產(chǎn)物具有很好的可石墨化性。
[Abstract]:Using toluene soluble component of medium-temperature coal pitch as raw material, elemental analysis and TG/DTG analysis were carried out, and polarizing microscope and X-ray single crystal diffractometer were used. Raman spectra and corresponding peak fitting methods were used to study the thermal conversion products. Based on the experimental data, the reaction activation energy was calculated by Flynn-Wall-Ozawa method and Kissinger-Akahira-Sunose method, and the kinetic parameters of pyrolysis reaction were calculated by Satava-Sastak method. The experimental results show that the activation energy of pyrolysis of toluene soluble component in medium-temperature asphalt is 88.48kJ / mol, and the lgA=10.22, reaction order of pre-exponential factor is 2. The mechanism of pyrolysis is suitable for random nucleation and subsequent growth models. The content of optical macerals of carbonized products calcined at 1000 鈩，

本文編號(hào)：2400571