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Estimation of activation energies during hydrodesulfurization of middle distillates

机译:中间馏分加氢脱硫过程中活化能的估算

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Hydrodesulfurization (HDS) of different petroleum distillates was carried out in a batch reactor using commercial CoMo catalyst and reaction conditions similar to industrial practice. Various experiments (agitation, particle size and amount of catalyst tests) were conducted with different hydrocarbon feeds to assure the operation under kinetic regime. Reaction orders and activation energies for each feed were determined by two approaches (linear and non-linear regressions). Both kinetic parameters (n and E_A) were found to follow a direct relationship with sulfur content in the feed. Reaction orders ranged between 1.96 and 3.36 and activation energies from 21.49 to 41.96 kcal/mol, which were within the range of those reported in the literature. High values of reaction order were attributed to contributions of HDS reaction of each individual compound exhibiting very different reaction rate constants.
机译:不同的石油馏出物的加氢脱硫(HDS)在间歇反应器中使用商业CoMo催化剂和类似于工业实践的反应条件进行。使用不同的烃进料进行了各种实验(搅拌,粒度和催化剂测试量),以确保在动力学条件下的操作。每种进料的反应顺序和活化能通过两种方法(线性和非线性回归)确定。发现两个动力学参数(n和E_A)都与进料中的硫含量直接相关。反应级数在1.96和3.36之间,活化能从21.49至41.96 kcal / mol,在文献报道的范围内。高反应阶数归因于每个化合物的HDS反应贡献,这些化合物表现出非常不同的反应速率常数。

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