煤矿安全2017，Vol.48Issue(4)：24-28,5.DOI:10.13347/j.cnki.mkaq.2017.04.007
贫氧条件下煤自燃特性的热重-红外实验研究
Thermogravimetric-infrared Experimental Research on Coal Spontaneous Combustion Under the Condition of Lean Oxygen
摘要
Abstract
To study spontaneous combustion characteristics of pulverized coal under the condition of lean oxygen,we use TG/DSC and FTIR spectrometry to test the combustion heat release process of Gubei gas coal samples under different oxygen concentration.We analyze temperature point characteristics,TG and DSC curves under the lean oxygen condition.The change laws of the release of CO and CO2 in infrared spectrum is studied.By the integral method,we calculate the activation energy change laws of active temperature point to the point of ignition.Research shows that coal and oxygen reaction can still continue under the condition of lean oxygen.The characteristic temperature points increase in the high temperature oxidation stage.DSC,TG curves offset to high temperature zone,and the peak temperature of CO and CO2 is increased.Weight gain stage to the combustion phase of the activation energy changes little.关键词
贫氧/气煤/自燃特性/热重红外/活化能Key words
oxygen deficient/gas coal/spontaneous combustion characteristic/thermogravimetric infrared/activation energy分类
矿业与冶金引用本文复制引用
邓军,杨俊义,张玉涛,李亚清..贫氧条件下煤自燃特性的热重-红外实验研究[J].煤矿安全,2017,48(4):24-28,5.基金项目
国家自然科学基金资助项目(51404192) （51404192）
中国博士后科学基金资助项目(2015T81043) （2015T81043）
陕西省自然科学基础研究资助项目(2015JQ5174) （2015JQ5174）
