在 3MPa、32 0～ 4 60℃和气体组成 (摩尔分率 )为CO 0 .0 55～ 0 .132 ,CO2 0 .0 32～ 0 .114 ,H20 .2 4 2～ 0 .4 2 3 ,H2 O 0 .2 76～ 0 .4 0 5,N2 0 .0 77～ 0 .2 71(余为CH4)条件下 ,采用磁力搅拌内循环无梯度反应器 ,对低汽 /气比LB型一氧化碳中温变换催化剂的宏观反应特性进行了实验研究。以Marquardt法对实验数据进行非线性参数估值 ,建立了能良好吻合实验数据的幂函数型LB中温变换催化剂加压宏观动力学模型。 At 3MPa, 32 0 ~ 4 60 ℃ and gas composition (molar fraction) of CO 0 .055 ~ 0.132, CO2 0 .0 32 ~ 0 .114, H20 .2 4 2 ~ 0 .4 2 3, H2 O 0 .2 76 ~ 0 .4 0 5, N2 0 .0 77 ~ 0 .2 71 (the rest is CH4), magnetic stirring internal circulation without gradient reactor, the low steam / gas ratio of LB type carbon monoxide The macro-reaction characteristics of the mid-temperature shift catalyst were investigated experimentally. The non-linear parameter estimation of the experimental data by Marquardt method was carried out to establish a macroscopical dynamic model of the pressure-dependent LB medium temperature shift catalyst which can fit the experimental data well.