Abstract
Abstract The purpose of this research is to utilize computer aided modeling as a tool for the investigation of simultaneous hydrodesulfurization (HDS), hydrodenitrogenation (HDN) and hydrodearomatization (HDA) reactions in industrial reactors. This study is based on the modeling of an industrial process as a mean to predict the quality of products during the hydrotreatment of a vacuum gas oil (VGO) using a commerical catalyst (Ni-Mo/γAl 2 O 3 ), including the three selected reactions (HDS, HDN, HDA), and utilizing data obtained at a pilot-plant, where catalytic experiments were carried out under typical industrial conditions. Analytical techniques such as nuclear magnetic resonance (NMR), gas chromatography coupled with high performance mass spectrometry (GC-MS), ultraviolet-visible spectrometry (UV-VIS), simulated distillation (SimDis), analysis of saturates-aromatic-resin (SAR), and standard tests (ASTM) were used for the construction of a database. A suitable numerical program with a user-friendly interface was written for this simulation. The simulated results show a good agreement with experimental data obtained from the pilot plant.
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