摘要
采用热重?红外(TG?FTIR)联用技术研究废弃推进剂与无烟煤混合试样的燃烧特性,以10 K·min^(-1)的加热速率将不同配比的推进剂?无烟煤混合物从室温加热至1300℃,分析热分析曲线获得热力学参数,采用Satava?Sestak积分法计算氧化反应动力学参数,并进行红外光谱的同步分析。结果表明,将废弃推进剂加入到无烟煤中,随着推进剂含量的上升,热分析曲线向低温区移动,无烟煤固定碳的着火温度由560℃降至383℃,燃尽温度由676℃降至616℃,综合燃烧特性指数由2.36E?8升至1.27E?7,反应表观活化能由165.6 kJ·mol^(-1)降低至91.2 kJ·mol^(-1);红外光谱结果显示,随着推进剂掺混量增加,热氧化标志性气体产物CO_2、CO波峰向低温区移动,表明废弃推进剂对无烟煤的氧化和点火燃烧过程具有促进作用。
Large amount of solid propellants would be discarded each year due to failure,and the recycling /reuse of the waste propellants is important for energy conservation and environmental protection.On the basis of thermogravimetry.differential scanning calorimetry,coupled with Fourier transform infrared spectroscopy(TG-DSC-FTIR)technique,the solid.state reaction properties of the mixtures of propellant and anthracite has been investigated with details.Propellant.anthracite blends at different ratios were heated up to 1300 ℃ at 10 K·min^-1 heating rate in air,and the FTIR spectra have been obtained synchronously.The results show that as the propellant content increases,the decomposition process moves to the low temperature zone.The ignition temperature of anthracite decreases from 560 ℃ to 383℃.The burn out temperature decreases from 676 ℃ to 616 ℃,and the comprehensive combustion characteristic index increases from 2.36 E-8 to 1.27 E-7.Moreover,the apparent activation energy of the fixed carbon combustion part decreases from 165.6 to 91.2 kJ·mol^-1.The FTIR spectra show that as the propellant content increases,the release of CO2 and CO as the major gaseous products of anthracite oxidation,move to the low temperature zone.It indicates that the waste propellants can greatly enhance the oxidation process,ignition and combustion of anthracite.
作者
魏潇
刘建忠
周禹男
苑继飞
邹德荣
WEI Xiao;LIU Jian-zhong;ZHOU Yu-nan;YUAN Ji-fei;ZOU De-rong(State Key Laboratory of Clean Energy Utilization,Zhejiang University,Hangzhou 310027,China;Hubei Sanjiang Aerospace Jianghe ChemicalTechnology Co.,Ltd.,Yichang 444200,China)
出处
《含能材料》
EI
CAS
CSCD
北大核心
2019年第4期304-310,I0006,共8页
Chinese Journal of Energetic Materials
关键词
废弃推进剂
无烟煤
混合燃烧
热重
红外光谱
waste propellant
anthracite
co-combustion
thermogravimetric analysis
infrared spectrum
作者简介
魏潇(1995-),男,硕士生,主要从事含能材料研究。e-mail:21860075@zju.edu.cn;通信联系人:刘建忠(1965-),男,教授,博导,主要从事推进剂与金属燃料研究。e-mail:zjliu@zju.edu.cn.
