| 石油馏份加氢精制的混合动力学模型 |
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| 引用本文： | 黄志渊. 石油馏份加氢精制的混合动力学模型[J]. 化工学报, 1981, 32(1): 61-74 |
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| 作者姓名： | 黄志渊 |
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| 作者单位： | 石油化工科学研究院 |
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| 摘 要： | 本文首先对加氢精制类二级反应动力学模型的研究做了简要的回顾,然后提出了一个混合反应动力学模型,可用以处理一级反应动力学模型及作者提出的类二级反应模型所不能处理的实验数据得到了较为满意的结果。编制了一个可同时用一级反应,类二级反应模型或本模型对数据进行处理并做出判断的电子计算机程序。
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Kinetic Models for Hydroprocessing of Petroleum Fractions |
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| Huang ZhiyuanResearch Institute of Petroleum Processing. Kinetic Models for Hydroprocessing of Petroleum Fractions[J]. Journal of Chemical Industry and Engineering(China), 1981, 32(1): 61-74 |
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| Authors: | Huang ZhiyuanResearch Institute of Petroleum Processing |
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| Abstract: | A mixed kinetic model with a computer program has been proposed for the processing of the hydrodesulphrisation and hydrodenitrogenation experimental data, which can not be treated by first order or pseudo-second order kinetics. A brief review of the authors pseudo-second order kinetic model is also presented.In the pseudo-second order kinetic model a hyperbolic function of type is used to describe the experimental conversion level - reciprocoal ofLHSV curves. By defining the extreme value of conversion level Ym under certain operating conditions and catalyst as Lim Y=1/b, it is possible to trans-form the above function to the following pseudo-second order kinetic equation:whereand the following model equation is obtained:The predicted values of % conversion are in good agreement with the experimental values.In the case when b<1, the model fails to describe the behaviour of conver-sion curves kinetically, so a mixed kinetic model is developed by assuming both the first and second order reactions can take place on the catalyst simultaneously. Thus the following kinectic equation is obtained:The rate constants K1 and K2 can be found on a computer by preassuming a series of K2/K1 ratio and K1 values and then minimizing the sum of squares of the difference between experimental and predicted values of Y.Generally the mixed kinetic model can be used for a broad range of kinetic data in hydroprocessing. However, in the case of b>l,the pseudo-second order kinetic model seems to be preferred. |
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