【摘要】 验证了内循环无梯度反应器在气体流量80～130 mL/h、转速600～1 400 r/min时能很好体现无梯度的性能,并采用O.154～0.198 mm的国产新型甲醇合成催化剂NC309,在反应温度190～250℃,反应压力5～8 MPa,体积空速4 000 h^-1的条件下对其宏观动力学进行研究。选择Langmuir-Hinshelwood型动力学方程建立了以各组分逸度表示的CO、CO₂加氢合成甲醇的宏观动力学模型,用合理有效的参数估值方法得到了宏观动力学模型参数。宏观动力学模型得到的CO和CO₂加氢反应的活化能均小于NC309本征动力学模型得到的活化能。更多还原

【Abstract】 The no gradient behavior of the internal recycled reactor was well proved in the chosen experimental conditions.Then,the apparent kinetics of methanol synthesis was investigated over domestic new catalyst NC309 with the size of 0.154-0.198 mm,under a space velocity of 4 000 h^-1,at a temperature from 190℃to 250℃and a pressure between 5 MPa and 8 MPa.The Langmuir-Hinshelwood type kinetics equation was chosen to set up the apparent kinetics model of methanol synthesis in terms of the reactant fugacity in the hydrogenation of carbon monoxide and carbon dioxide.The parameters were obtained based on the experimental data with the reasonable and effective parameter estimation method.At last,the results obtained were compared with those estimated by the intrinsic kinetics models of methanol synthesis over the same kind of catalyst,and the apparent reaction activation energy of hydrogenation of carbon monoxide and carbon dioxide were both smaller than those of the intrinsic reactions.更多还原