Mo基耐硫甲烷化催化剂本征动力学

Reaction kinetics of NIC6 Mo-based methanation catalyst

对高温活性好、耐硫强、热稳定性好、机械强度高和寿命长的NIC6高温耐硫甲烷化催化剂进行了本征动力学研究。以鲁奇炉出口气体组分为参照,采用等温积分反应器,在460~560℃、2.0~3.5MPa、φ（H2S）=0.4%、气体流量1.05~1.4mol/h条件下,通过气相色谱测定反应器出口各组分的浓度。得到幂函数动力学模型及活化能和指前因子。该函数模型的检验表明结果是合理的,参数回归显著,残差分布均匀。

The intrinsic kinetics of sulfur-tolerant methanation catalyst NIC6 was studied. The catalyst NIC6 shows high activity at high temperature. An isothermal integral tubular reactor was employed to test the catalyst and get experimental data. The components of the feed gas and the reaction tail gas were analyzed by gas chromatography. The catalyst was tested under the reaction conditions of 460-550℃, 2.0-3.5MPa, H2S volume fraction of 0.4% and gas flow rate of 1.05-1.4mol/h. A power function kinetic model was established from the experimental data, and the activation energy and pre-exponential factor were obtained. The model testing show that the results are reasonable. The parameters are regressed significantly and the residual distribution is uniform.