论文部分内容阅读
在固定床反应器上进行了Fe-Mn超细粒子催化剂F -T合成反应动力学研究。以碳化物机理为基础推导出简化的F -T合成产物生成动力学模型 : RCnH2n + 2 =kHC5PH2 (1-α)αn在温度 5 76～ 6 10K ,压力 1 5～ 2 5MPa ,空速 2 5 0 0～ 45 0 0h-1和原料气H2 /CO比为 2 0的条件下进行动力学试验 ,通过模型拟合 ,求得动力学方程参数 : kHC5=kHC5(5 80K)exp[EaR(1T - 15 80 ) ]其中 ,kHC5(5 80K) =2 82× 10 -6mol/ (mlcat·MPa·s) ,Ea=6 6 0 7kJ/mol结果表明 ,该模型与实验值拟合较好 ,链增长几率α与温度和反应器内H2 /CO比具有简单的关系 :α =1/ (1+ρRHC)。
The F-T synthesis kinetics of Fe-Mn ultrafine particle catalyst was investigated on a fixed bed reactor. Based on the carbides mechanism, a simplified kinetic model for the synthesis of F-T was deduced: RCnH2n + 2 = kHC5PH2 (1-α) αn at a temperature of 5 76-6 10 K, a pressure of 15-25 MPa and a space velocity of 25 The kinetic experiments were carried out under the conditions of 0 0 ~ 45 0 0h-1 and H2 / CO ratio of feed gas of 20, and the kinetic parameters were obtained by model fitting: kHC5 = kHC5 (5 80K) exp [1T - 15 80)] Among them, kHC5 (5 80K) = 2 82 × 10 -6 mol / (mlcat · MPa · s) and Ea = 6 6 0 7 kJ / mol. The results show that the model fits well with the experimental data. The growth rate α has a simple relationship with the temperature and the H2 / CO ratio in the reactor: α = 1 / (1 + ρRHC).