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Design of artificial neural networks using a genetic algorithm to predict saturates of vacuum gas oil

Petroleum Science 2010年第1期7卷 118-122页

作者： Dong Xiucheng Wang Shouchun Sun Renjin Zhao Suoqi School of Business Administration China University of Petroleum Beijing 102249 China School of Chemical Science and Engineering China University of Petroleum Beijing 102249 China

Accurate prediction of chemical composition of vacuum gas oil （VGO） is essential for the routine operation of refineries. In this work, a new approach for auto-design of artificial neural networks （ANN） based on a genetic algorithm （GA） is developed for predicting VGO saturates. The number of neurons in the hidden layer, the momentum and the learning rates are determined by using the genetic algorithm. The inputs for the artificial neural networks model are five physical properties, namely, average boiling point, density, molecular weight, viscosity and refractive index. It is verified that the genetic algorithm could find the optimal structural parameters and training parameters of ANN. In addition, an artificial neural networks model based on a genetic algorithm was tested and the results indicated that the VGO saturates can be efficiently predicted. Compared with conventional artificial neural networks models, this approach can improve the prediction accuracy.

关键词： saturates vacuum gas oil prediction artificial neural networks genetic algorithm

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Effect of Nitrogen Compounds on the Oxidation Stability of Saturate Fractions

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Chinese Journal of Chemical Engineering 2002年第4期10卷 486-489页

作者：周亚松林世雄 University of Petroleum(Beijing) State Key Laboratory of Heavy Oil Processing 北京 102200

A custom built dynamic oxygen uptake tester was used to study theinfluence of nitrogen compounds on the oxidation characteristics ofthe saturate fractions from mineral base oils. Experimental resultsindicate that nitrogen compounds, especially quinoline and indole,take part in the oxidation of saturates. It is also found that indoleis more active than quinoline. The latter can be oxidized partly intoketoimine, and the former is more rapidly oxidized into *** oxidation products, ketoimine or acylamide, could inhibit theoxidation of the saturates by decomposing hydroperoxide.

关键词： nitrogen compound oxygen consumption oxidation saturates

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