CHEMISTRY AND CHEMICAL ENGINEERING |
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Molecular reconstruction model for petroleum fractions based on structure oriented lumping |
QIU Tong, CHEN Jincai, FANG Zhou |
Department of Chemical Engineering, Tsinghua University, Beijing 100084, China |
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Abstract A molecular reconstruction method is given based on a structure oriented lumping model to predict petroleum fractions at the molecular level to achieve molecular management of refining processes. 22 basic structures were selected with relevant constraints. Then, 1 000 virtual molecules were constructed by the Monte Carlo method. Finally, the virtual molecules were adjusted according to the entropy maximization principle. The molecular reconstruction method predicts the petroleum fractions with relative errors between the properties and calibration data less than 3%.
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Keywords
structure oriented lumping
petroleum fraction
molecular reconstruction
Monte Carlo simulation
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Issue Date: 15 April 2016
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