Abstract: The macro-kinetics of methane-steam catalytic reforming reaction with wheel catalysts of original sizes was investigated in an internal recycling gradientless reactor (Type KD-1) under 3.04×106 Pa absolute pressure. Experimental conditions employed were as follows: reaction temperature 600-800℃, H2O/CH4 = 2.0-5.0 (molar ratio), carbon space velocities 4320-12120 ml/h. g. The methane-steam reforming reactions were described by parallel reaction models and experimental data were regressively computerized. The following macro-kinetics equations were obtained: and Calculations from experimental data indicated that water gas shift reaction is far away from equilibrium; wheel catalyst are about two times as effective as that of normal ring catalysts. Macro-kinetics equations thus obtained were applied on a commercial reformer; claiming reliability for the equations and good equivalence.

摘要： 在3.04×10~6Pa压力下使用KD-1型内循环式无梯度反应器研究了原粒度七筋车轮形催化剂上甲烷水蒸汽催化转化反应的宏观动力学.实验条件为:反应温度600—800℃、H_2O/CH_42.0～5.0、碳空速4320—12420ml/(h·g).采用平行模型来描述甲烷蒸汽转化反应,用电子计算机对实验数据进行回归整理,得到宏观动力学方程为:R_(co)=63475e~(-188536/R_gT)P(CH_4~(0.7)(1-β_1)R_(co_2)=8.464×10~(-8)e~(-136012/R_gT)P_(CH_4~(0.7)P_(H_2O)~(1.5)(1-β_2)结果表明,水煤气变换反应远离平衡;七筋车轮形转化催化剂的内表面利用率比一般环形催化剂提高约一倍.经过对工业转化炉核算,本文所得的宏观动力学方程是可靠的,具有良好的等效性.