吸热型碳氢燃料高温裂解特性及热力学模型分析  

Pyrolysis Characteristics and Thermodynamic Model Analysis of Endothermic Hydrocarbon Fuel at High Temperature

作　　者：柳朋浩 陈立伟 白素英 景敬 何瑞娟 葛朋 LIU Penghao;CHEN Liwei;BAI Suying;JING Jing;HE Ruijuan;GE Peng(College of Energy and Environmental Engineering,Hebei University of Engineering,Handan Hebei 056038,China;College of Materials Science and Engineering,Hebei University of Engineering,Handan Hebei 056038,China)

机构地区：[1]河北工程大学能源与环境工程学院,河北邯郸056038 [2]河北工程大学材料科学与工程学院,河北邯郸056038

出　　处：《当代化工》2025年第2期358-363,共6页Contemporary Chemical Industry

基　　金：河北省自然科学基金青年基金项目(项目编号:B2021402023)。

摘　　要：采用燃料高温反应实验测量装置,结合化学反应机理与状态方程,构建了燃料温度、密度、压缩因子与裂解反应关联的热力学模型,分析了吸热型碳氢燃料航空煤油RP-3高温裂解反应特性。结果表明:构建的热力学模型误差在±3%以内,最大误差为2.83%。相较于原燃料,高温裂解燃料的密度从112 kg·m^(-3)下降至57 kg·m^(-3),降低了49%。平均摩尔质量由152 g·mol^(-1)降低至109 g·mol^(-1),减少了28%,高温裂解燃料的平均摩尔质量与转化率存在确定的函数关系,平均摩尔质量可作为衡量燃料反应进程的指标。高温裂解燃料的压缩因子受流体温度和化学反应的影响,压缩因子从0.76增加至0.96,增加了26%,高温裂解燃料的性质逐渐趋向理想气体状态。该研究可为热防护系统的设计与优化提供理论依据和基础数据。On basis of an experimental apparatus for high-temperature reaction of fuel,the chemical reaction mechanism and equation of state,a thermodynamic model was developed to establish correlations between fuel temperature,density,compressibility factor and pyrolysis reaction.The high-temperature pyrolysis reaction characteristics of endothermic hydrocarbon fuel aviation kerosene RP^(-3) were analyzed.The results showed that the thermodynamic model exhibited an error within±3%,with the maximum error of 2.83%.Compared to raw fuel,the density of pyrolysis fuel at high temperature decreased from 112 kg·m^(-3) to 57 kg·m^(-3),with a reduction of 49%.The average molar mass decreased from152 g·mol^(-1) to 109 g·mol^(-1),representing a decrease of 28%.The average molar mass exhibited a definite functional relationship with the conversion rate of pyrolysis fuel at high temperature,thereby serving as an indicator for assessing the progress of fuel pyrolysis reaction.The compressibility factor of pyrolysis fuel at high temperature was influenced by the fluid temperature and chemical reactions.The compression factor increased from 0.76 to 0.96,indicating an enhancement of 26%.And the thermal properties of pyrolysis fuel at high temperature gradually approached the ideal gas state.The investigation can provide theoretical basis and fundamental data for the design and optimization of thermal protection system.

关 键 词：燃料 热力学性质 裂解特性 化学反应 石油化工 

分 类 号：TQ511[化学工程] TE65[石油与天然气工程—油气加工工程]