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PILOT PLANT AND MODELING STUDY OF HYDROCRACKING, HYDRODENITROGENATION AND HYDRODESULPHURISATION OF VACUUM GAS OIL IN A TRICKLE BED REACTOR

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Author(s): Majid Bahmani | Reza Seif Mohadecy | Sepehr Sadighi

Journal: Petroleum and Coal
ISSN 1337-7027

Volume: 51;
Issue: 1;
Start page: 59;
Date: 2009;
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Keywords: Hydrocracking | hydrodenitrogenation | hydrodesulphurisation | modeling | three phase reactor | discrete lumping

ABSTRACT
Pilot plant hydrocracking of vacuum gas oil at 180 bar and LHSV of 1.1 h-1 was carried out in afixed bed reactor containing 40 cm3 volume of Ni/Mo/zeolite catalyst. Yields of light naphtha, heavynaphtha, kerosene and diesel were monitored over a temperature range of 380-400oC. Thehydrocracking reactions were modeled using a network consisting of eleven pseudocomponentskinetics. Effects of basic and non-basic nitrogenous compounds on the HCR and HDS reactionswere also taken into account. The three phase trickle bed reactor model incorporating all reactionswas solved using a 4th order Runge-Kutta scheme and the results were compared with experimental pilotdata.
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