Tez özetleri Astronomi ve Uzay Bilimleri Anabilim Dalı

Investigation of Hydrocracking Reactions of Iranian Heavy Oil Resid
It is now a necessity to produce lighter products from heavy oil residue due to increasing demand for lighter petroleum products. Slurry hydrocracking is a new promising process. The reaction yield and % conversion varies on slurry hydrocracking according to reaction type and the properties of catalyst used.

In this study, it’s expected to investigate cheap, effective and easily accessible catalysts that help converting heavy oil residue to lighter products with high yield. The results of this study are expected to reduce current process costs and produce good quality products. Hydrocracking experiments were carried out in a 10 ml stainless steel bomb-type reactor with up and down stirrer at 200 times of reciprocation per minute. Initial pressure was 100 bar H₂. The catalyst provided the minimum coke in the reactions was investigated. FeSO₄.H₂O, the binary mixtures of FeSO₄.H₂O with metal oxides (Fe₂O₃, Al₂O_3, CaO, SiO₂) and the mixtures Fe₂O_3, Al₂O₃ and SiO₂ with elementary sulphur were used as catalyst through the experiments. These experiments were conducted at 425^oC for 90 minutes with the initial pressure 100 bar H₂. The temperature homogeneity was provided with fluidized sand bath. The amount of coke, liquid and gas+light maltene were calculated for each experiment. Gel Permeation Chromatography (GPC), Nuclear Magnetic Resonance (¹H NMR) and elemental analysis were used for Iranian heavy oil resid analysis. Differential Scanning Calorymeter (DSC) was used to analyze the catalyst and Scanning Electron Microscopy (SEM) was used to analyze coke.