本文關(guān)鍵詞：不同煤階煤氧化過程活性基團(tuán)的紅外光譜特征研究　出處：《西安科技大學(xué)學(xué)報(bào)》2016年03期 　論文類型：期刊論文

  更多相關(guān)文章： 自燃傾向性 低溫氧化 活性基團(tuán)

【摘要】：煤自燃傾向性與變質(zhì)程度密切相關(guān),研究不同煤階煤氧化過程中活性基團(tuán)及其變化特征,對揭示和表征煤自燃傾向性有十分重要的意義。文中采用傅里葉紅外光譜儀(FTIR),通過紅外光譜分析實(shí)驗(yàn),對比研究不同變質(zhì)程度煤樣在不同溫度條件下煤中主要活性基團(tuán)的變化特征,根據(jù)煤低溫氧化過程中活性基團(tuán)的動態(tài)變化特征,得出了煤分子中含氧活性結(jié)構(gòu)含量隨煤變質(zhì)程度的升高不斷減少,表明了煤分子中活性結(jié)構(gòu)的種類、數(shù)量及活性直接影響煤氧化自燃的能力,揭示了煤低溫氧化升溫過程微觀結(jié)構(gòu)變化與煤自燃性之間的內(nèi)在關(guān)系。研究表明不同煤階煤微觀本質(zhì)的不同,導(dǎo)致其自燃傾向特性的不同。研究結(jié)果對煤自燃過程的定量分析、預(yù)測和阻化的研究有一定的指導(dǎo)意義。
[Abstract]:The tendency of coal spontaneous combustion is closely related to the degree of deterioration. Studying the active groups and their changing characteristics of different rank coal oxidation process is very important for revealing and characterizing the tendency of coal spontaneous combustion. In this paper, by using Fourier transform infrared spectrometer (FTIR), through the infrared spectrum analysis experiment, change characteristics of main active groups in coal under different temperature conditions in the coal sample comparison of different metamorphic degree, according to the dynamic characteristics of the active groups of coal oxidation at low temperature, the higher oxygen content of active molecular structure of coal with coal the degree of metamorphism is decreased, indicate the quantity and variety of activity in the molecular structure of coal directly affect the ability of coal spontaneous combustion, reveals the inherent relationship between the process of low temperature oxidation of coal temperature and microstructure change between the spontaneous combustion of coal. The study shows that the different micro nature of coal rank coal leads to the difference of spontaneous combustion tendency. The research results have certain guiding significance for the quantitative analysis, prediction and resistance research of coal spontaneous combustion.
【作者單位】： 教育部西部礦井開采及災(zāi)害防治重點(diǎn)實(shí)驗(yàn)室;西安科技大學(xué)能源學(xué)院;
【基金】：國家自然科學(xué)基金(51504187) 陜西省自然科學(xué)基金(2014JM7276) 陜西省教育廳科學(xué)研究專項(xiàng)計(jì)劃(15JK1479)
【分類號】：TD752.2;O657.33
【正文快照】： 0引言中國90%以上的煤層屬于易自燃或自燃煤,煤自燃現(xiàn)象十分嚴(yán)重[1]。煤分子的組成具有復(fù)雜性及多變性,不同煤階的煤具有不同的活性基團(tuán)特征,在煤氧化自燃過程中,煤的微觀活性結(jié)構(gòu)首先氧化,放出熱量,引起煤體溫度升高,并進(jìn)一步促進(jìn)煤中新的活性結(jié)構(gòu)產(chǎn)生。因此研究煤表面活性基，

本文編號：1341988