B113-2型高温变换催化剂上反应动力学(Ⅰ)——本征动力学研究  

THE KINETICS OF SHIFT REACTION ON THE B113-2 SHIFT CATALYST(Ⅰ)——Intrinsic Kinetics

作　　者：刘全生[1] 赵福军[1] 牟占军[1] 冷庆海 唐伟 陈超 金恒芳[1] 

机构地区：[1]内蒙古工业大学化工学院,呼和浩特市010062 [2]盘锦南方化学辽河催化剂有限公司,辽宁盘锦124021

出　　处：《石油化工高等学校学报》2004年第3期4-8,16,共6页Journal of Petrochemical Universities

基　　金：国家自然科学基金 (2 0 0 6 6 0 0 2 );内蒙古教育厅重点领域 (ZL990 4 );内蒙古自然科学基金 (990 30 4- 2 )联合资助项目

摘　　要：使用活塞流管式积分反应器 ,采用稳态测定技术 ,在 6 18～ 72 3K、1.0MPa压力下 ,对在国产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参数估计和检验 ,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 :在高温变换催化剂上变换反应动力学参数基本上与传统铁铬系高温变换催化剂一致 ,但在该催化剂上CO组分对反应速率的影响程度降低 ,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较大。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很小 ,在实际应用过程中 ,可以忽略。The water gas shift reaction over an industrial ferrochrome shift catalyst B113-2 was studied by steady experiments in a fixed-bed plug flow microreactor consisting of a stainless-steel tube with eliminating diffusion effect at 618～723 K and 1.0 MPa. The different dependencies of the intrinsic kinetics were evaluated by a power law kinetic model, which was found to give an excellent representation of the kinetic data. Comparatively, the kinetic parameters of this model are consistent with that of traditional water gas shift catalyst. The influence of CO on the reaction rate is depressed comparing with other traditional ferrochrome shifts catalysts, which may be resulted from the additional Cu component in this catalyst. The rate expression indicates a strong inhibition on the forward rate by CO_2. It’s crucial to reduce the resistance effect of the CO_2 in favor of the reaction rate. The influence of H_2 on the reaction rate can be neglected.

关 键 词：铁铬系催化剂 水煤气变换反应 本征动力学 模型 

分 类 号：TQ018[化学工程]