丙烷脱氢氧化制丙烯热力学分析  

Thermodynamics analysis of propane dehydrogenation oxidation to propylene

作　　者：叶敏[1] 李贤[1] 

机构地区：[1]中国石化集团南京工程有限公司,江苏南京211100

出　　处：《化学工业与工程技术》2011年第6期18-21,共4页Journal of Chemical Industry & Engineering

摘　　要：计算了丙烷脱氢过程各主、副反应的热力学平衡常数和平衡转化率,分析了平衡转化率、烧氢率与反应热效应的关系。表明氧化烧氢具有提高平衡转化率和能量合理利用的优点;丙烷脱氢平衡转化率随烧氢率的增加而增大;当反应温度为923K时要保证热量耦合,烧氢率应大于48.6%;丙烷脱氢氧化工艺原理在于用氧化再热取代传统中的过热蒸汽再热。The equilibrium constant and conversion of propane dehydrogenation oxidation are calculated. Relation of dehydrogenation equilibrium conversion, hydrogen-burning rate and reaction heat is analyzed. It is found that the technique of dehydrogenation oxidation is good for increasing equilibrium conversion of propane. Propane dehydrogenation equilibrium conversion is as increase as hydrogen-burning rate. The hydrogen burning rate should be greater than 48.60% to ensure energy coupling when reaction temperature is 923 K. The technology theory of propane dehydrogenation oxidation is that oxidation reheat is instead of the traditional superheated steam reheat.

关 键 词：丙烷 丙烯 脱氢氧化 平衡常数 转化率 反应热 热力学 

分 类 号：TQ221.212[化学工程—有机化工]