Journals Information
Universal Journal of Engineering Science(CEASE PUBLICATION) Vol. 6(1), pp. 12 - 18
DOI: 10.13189/ujes.2018.060102
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Deposits Effects on Catalysts Porous Structure and Chemical Activity during Residuum Catalytic Hydro-treatment
Jamal Mohammad Amous *
Chemical Engineering Department, Faculty of Engineering, University of Hail, Hail, Kingdom of Saudi Arabia
ABSTRACT
Catalyst Porous structure parameters and activity were investigated during the catalytic hydro-treatment of Heavy Arabian Oil atmospheric residuum utilizing a fixed bed catalytic reactor with recycle. Two model Hydro-treating catalysts CAT-1 containing 0.5 wt% Molecular Sieves (MS) 13X, and CAT-2, having different physical and chemical properties were used in this investigation. Spent, extracted and dried, catalyst samples were analyzed for their physical features and chemical deposits for both types, CAT-1 and CAT-2, with sizes having (Lpo) = 0. 059 mm and 
. It was found that carbonaceous deposits on CAT-1, 
approached 41.91 wt% (S, C, H and N) g/100 gregen. Cat.. The porous structure parameters were affected by the deposited materials. Surface areas lost due to deposits were in the range of 45 to 55% and pore volumes decrease was in the range of 43 to 52% compared with the fresh samples. Probable pore diameters decreased from around 80 脜 to 43 脜. Pores in the range between 105 to 165 脜 disappeared Especially in CAT-1 samples. Coke content of S, C, H, and N with respect to the weight of the regenerated catalyst was around 4.0, 34.0, 1.9 and 0.50 wt. % respectively. Vanadium (V) and Nickle (Ni) contents were in the range 0.63 and 0.27 wt. % respectively. Extracted and dried spent catalysts samples were oxidized with dry air stream at 380℃. Upon regeneration the carbonaceous deposits were removed and the porous structure parameters were recovered up to levels approaching 79-89% of those recorded for the fresh samples, depending on their sizes.
KEYWORDS
Catalyst, Pore Structure, Deposits, Regeneration, Residuum, Metals
Cite This Paper in IEEE or APA Citation Styles
(a). IEEE Format:
[1] Jamal Mohammad Amous , "Deposits Effects on Catalysts Porous Structure and Chemical Activity during Residuum Catalytic Hydro-treatment," Universal Journal of Engineering Science(CEASE PUBLICATION), Vol. 6, No. 1, pp. 12 - 18, 2018. DOI: 10.13189/ujes.2018.060102.
(b). APA Format:
Jamal Mohammad Amous (2018). Deposits Effects on Catalysts Porous Structure and Chemical Activity during Residuum Catalytic Hydro-treatment. Universal Journal of Engineering Science(CEASE PUBLICATION), 6(1), 12 - 18. DOI: 10.13189/ujes.2018.060102.