Journal of Petroleum & Environmental Biotechnology

Study of vacuum gas oil cracking over high acid ZrO2-SiO2 mixed oxide

3^rd World Congress on Petroleum Engineering and Natural Gas Recovery

July 20-21, 2018 Sydney, Australia

Volodymyr V Brei, Olena I Inshina, Svitlana V Prudius and Kostyantyn M Khomenko

National Academy of Sciences of Ukraine, Ukraine

Posters & Accepted Abstracts: J Pet Environ Biotechnol

Abstract:

Traditionally, acid alumino silicate catalysts were used in fluid catalytic cracking process. Typical cracking catalyst contains H-Y faujasite, kaolin or bentonite, alumina, an obligatory additive (up to 2 wt.%) of Ln2O3 and a small amount of platinum (20-50 ppm). Additive of deficient lanthanides improves the activity and hydrothermal stability of alumino silicate catalyst. In this communication the results on comparative testing of the high acidic ZrO2-SiO2 mixed oxides and alumina silicate petromax-50P catalyst in cracking of industrial vacuum gas oil are presented. The acid silica-zirconia samples were prepared from Ukrainian zircon (ZrSiO4) concentrate according to our developed procedure. These samples did not contain additional La3+ ions. The cracking experiments were performed using a flow reactor with fixed bed of a catalyst (10 cm3) under WHSV = 4 h-1 at 500 °C for 10 minutes. After that, a catalyst was regenerated in air flow at 600 °C and then an experiment was repeated. The stable activity of ZrSi samples was kept after carrying out 20-25 experiments. The industrial vacuum gas oil with Tm=30 °C was used. The distillation of liquid cracking products was carried out under vacuum according to ASTM D 1160-03. The analysis of gasoline fractions with EBP = 200 °C was performed according to ASTM D 6729. Obtained results show that ZrSi samples provide the higher yield of gasoline fraction (on 8-10%) than the zeolite catalyst. Gasoline fraction formed over ZrSi catalyst contains more i-alkanes and less aromatics (RON = 82) in comparison with petromax-50P gasoline (RON=79). The high cracking ability of ZrSi samples could be explained by their higher acidity (H0�-11.35; [BH]=1.0-1.1 mmol/g; S�390 m2/g) in comparison with aluminosilicates (H0�-8.2).

Biography :

Volodymyr V Brei pursued his PhD in Physical Chemistry. Currently he is the Head of Department of Heterogeneous acid-base catalysis and Director of Institute for Sorption and Endoecology Problems, Corresponding Member of Ukrainian Academy of Sciences (catalysis) since 2009.

E-mail: brei@ukr.net