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本文采用活塞流管式积分反应器,在1.0MPa压力下,对国产B113-2型铁铬系高温变换催化剂上变换反应本征动力学数据进行了测试.根据测定得到的数据,对幂函数动力学模型进行了模型参数估计和模型检验,得到了高度显著的动力学回归方程.从动力学方程可以得出:该高温变换催化剂的活化能比较低,因此其低温活性较好;该催化剂上H2O组分对反应速率的影响比较大,推测可能是由于该催化剂中Cu组分作用的结果:CO2对变换反应速率的抑制作用很大,因此为提高变换反应速率,应当设法减小CO2的不利影响;H2组分对反应速率的影响均比较小,在实际应用过程中,可以忽略.
In this paper, piston flow tube integral reactor was used to test the intrinsic kinetic data of the shift reaction of domestic B113-2 iron-chromium high temperature shift catalyst at 1.0MPa pressure.According to the measured data, The model was tested by the model parameters estimation and model test, and a highly significant kinetic regression equation was obtained. From the kinetic equation, it can be concluded that the activation energy of the high temperature shift catalyst is relatively low, so its low temperature activity is better. The influence of the component on the reaction rate is relatively large. It is presumed that the Cu component in the catalyst may be responsible for the effect. The inhibition of the conversion reaction rate by CO2 is very large. Therefore, in order to increase the conversion reaction rate, the adverse effect of CO2 should be reduced ; H2 component of the reaction rate are relatively small, in the practical application process, can be ignored.