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Received April 7, 2010
Accepted May 14, 2010
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This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits
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Analysis of sulfur removal in gasoil hydrodesulfurization process by application of response surface methodology
Sorood Zahedi Abghari†
Saeed Shokri
Behnam Baloochi
Mehdi Ahmadi Marvast
Shahram Ghanizadeh1
Afshin Behroozi1
Modeling and Process Control Department, Process Engineering Development Division, RIPI (Research Institute of Petroleum Industry), Tehran, Iran 1Research and Development Division, Bandar Abbas Oil Refining Company, Bandar Abbas, Iran
zahedis@ripi.ir
Korean Journal of Chemical Engineering, January 2011, 28(1), 93-98(6), 10.1007/s11814-010-0325-1
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Abstract
To investigate the efficiency of a Co-Mo catalyst in HDS process, a set of experiments were designed and carried out based on central composite design (CCD) methodology in an HDS pilot plant. The designed variables included temperature, LHSV and pressure. However, the hydrogen over fresh feed ratio remained constant. The ranges of these variables were, respectively, equal to 335-361 ℃, 1.06-1.8 1/hr and 46.8-53.2 bar. The outcomes of experiments were employed to determine the coefficients of statistical models. For the clarification of the accuracy of the model,_x000D_
several statistical tests like ANOVA (Analysis of Variance), Lack-of-Fit test and residual squares were carried out. To optimize the operating conditions to achieve maximum sulfur removal, an optimization algorithm was employed. The outcomes revealed that the minimum sulfur content, which is 23.65 ppm in the final product, is attained at 355 ℃, 1.2 1/hr and 49.2 bar.
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