论文部分内容阅读
本文采用内循环无梯度反应器,在3.0MPa压力范围内,对国产B113-2型铁铬系高温变换催化剂上变换反应宏观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:该高温变换催化剂内扩散影响严重;该催化剂上CO2组分对反应速率的影响与其它铁系变换催化剂相比变小,推测可能是由于扩散影响或是该催化剂中Cu组分作用的结果;CO2对变换反应速率还是存在一定的抑制,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.压力对变换反应速率影响较大,3.0MPa压力以下,反应速率随着压力的增加线性提高,但在1.0MPa以下时的增加速度明显高于1.0MPa以上的增加速率.
In this paper, macroscopical kinetic data of the shift reaction in domestic B113-2 iron-chromium high-temperature shift catalyst were tested in an internal circulation gradientless reactor at a pressure range of 3.0MPa.Based on the measured data, the power function dynamics Model parameter estimation and model test were carried out, and a highly significant kinetic regression equation was obtained. From the kinetic equation, it can be concluded that the diffusion in the high-temperature shift catalyst is seriously affected; the influence of the CO2 component on the reaction rate and other Iron-based shift catalyst smaller, presumably due to the diffusion effect or the Cu component of the catalyst as a result of the reaction; CO2 conversion reaction rate there is still some inhibition, so to improve the conversion reaction rate, we should try to reduce CO2 The H2 content has a small influence on the reaction rate and can be neglected in practical application.The pressure has a great influence on the conversion reaction rate and the reaction rate increases linearly with the increase of the pressure under the pressure of 3.0MPa The rate of increase below 1.0 MPa is significantly higher than the rate of increase above 1.0 MPa.