The reaction heat effect analysis for the aromatization process of Liquefied Petroleum Gas (LPG) was completed in this paper. In order to characterize this complex reaction system, one set of independent reactions was...The reaction heat effect analysis for the aromatization process of Liquefied Petroleum Gas (LPG) was completed in this paper. In order to characterize this complex reaction system, one set of independent reactions was determined by means of atomic coefficient matrix method. Based on reaction thermodynamic and stoichiometric knowledge, the heat effect, Gibbs free energy change and equilibrium constant for each independent reaction was calculated for the specified conditions. Under these conditions, based on the initial and final composition data from LPG aromatization experiments, the actual extent of reaction for each independent reaction was determined. Furthermore, the global reaction heat and adiabatic temperature rise of LPG aromatization reaction system could be estimated. This work would provide a theoretical guidance for the design and scale-up of reactor for LPG aromatization process, as well as for the selection of proper operating conditions.展开更多
TH703 2001010039光学系统热效应及分析软件研制=Thermal effectsfor optical system and design of an analysisprogram[刊,中]/李林,王煊,张丽琴,张波(北京理工大学光电工程系.北京(100081))∥北京理工大学学报.-2000,20(1).-112-114...TH703 2001010039光学系统热效应及分析软件研制=Thermal effectsfor optical system and design of an analysisprogram[刊,中]/李林,王煊,张丽琴,张波(北京理工大学光电工程系.北京(100081))∥北京理工大学学报.-2000,20(1).-112-114研究温度对光学系统的影响,讨论无热设计方法。采用温度热膨胀系数和光线追迹分析温度变化对光学系统结构参数的影响及成像质量的变化。研究表明,温度对光学系统的影响是明显的,无热设计是可行的。温度的热效率不可忽视。展开更多
文摘The reaction heat effect analysis for the aromatization process of Liquefied Petroleum Gas (LPG) was completed in this paper. In order to characterize this complex reaction system, one set of independent reactions was determined by means of atomic coefficient matrix method. Based on reaction thermodynamic and stoichiometric knowledge, the heat effect, Gibbs free energy change and equilibrium constant for each independent reaction was calculated for the specified conditions. Under these conditions, based on the initial and final composition data from LPG aromatization experiments, the actual extent of reaction for each independent reaction was determined. Furthermore, the global reaction heat and adiabatic temperature rise of LPG aromatization reaction system could be estimated. This work would provide a theoretical guidance for the design and scale-up of reactor for LPG aromatization process, as well as for the selection of proper operating conditions.
文摘TH703 2001010039光学系统热效应及分析软件研制=Thermal effectsfor optical system and design of an analysisprogram[刊,中]/李林,王煊,张丽琴,张波(北京理工大学光电工程系.北京(100081))∥北京理工大学学报.-2000,20(1).-112-114研究温度对光学系统的影响,讨论无热设计方法。采用温度热膨胀系数和光线追迹分析温度变化对光学系统结构参数的影响及成像质量的变化。研究表明,温度对光学系统的影响是明显的,无热设计是可行的。温度的热效率不可忽视。
