School of Mining Engineering.North China University of Science and Technology Anjiazhuang Town people's Government,Feicheng City,Shandong Province

为掌握次磷酸盐阻化剂对煤的阻燃机理,了解煤在氧化过程中微观结构的变化规律,采用傅里叶变换红外光谱仪,对加入次磷酸铝和次磷酸钠阻化剂处理过的煤样分析其红外光谱图。通过研究阻化前后煤分子微观结构变化特征,分析了次磷酸铝与次磷酸钠对煤在低温下的阻化效果。结果表明:在氧化升温过程中对煤使用阻化剂,煤结构中起阻化作用的是含氧官能团、芳香烃和脂肪烃3类活性基团,含氧官能团起主要作用,芳香烃起次要作用,脂肪烃作用最小;随氧化温度升高,RCH3基团和R2CH2基团氧化反应活性不同,次磷酸盐阻化剂在升温前期阻化效果明显,超过一定温度后不起阻化作用,但对含氧官能团—C—O均保持一定的阻化作用。

in order to grasp the hypophosphite ihibtior mechanism for coal combustion.and understand the change rule of microstoucture in the pocess of oxidat in of coa by using Fourier ransform infrared specromer,the inrared spectra of the coal samples with the inhibior agentreated with th addtion ofaluminum hypopoosphite and sodium hypophosphitewere analyzed.Through studying the molecular microsopic structure changing charactersics before and afer the process of oxidation inhibiorthe paper analyzed the resistance effect of aluminum hypophosphie and sodum hypophosphite on coal at lvw temperature: The resutshowed that using mhibitor for coal in oxidation heating process.three kinds of acive groups oxygen containing functional groups,aromaics hydrocabons and faty hydrocaon played a ole of inhibior in the coal structure containing oxygen functional groups played a major role aromatit hydrocaioons played a secondary role and fna y the alithatie hyrocarons. with increasing oxid ation temperature,RCH3 groups and R2CH2 groupoxidation reaction ctrvty wa diferent,the resistance effect of hypophosphit initbior was obvious in the early stage of heating up.and had no inhiblior effectater over a certain temperatre.the oxygen containing functonal group -C一O was kept theinhibitor function to some extent.

国家自然科学基金资助项目(51474086)；河北省自然科学基金资助项目(E2014209138)；大学生创新创业训练计划资助项目(X2016132)；