Journal
FUEL
Volume 219, Issue -, Pages 270-278Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.fuel.2018.01.134
Keywords
Hydroprocessing; Poly-aromatics; Light cycle oil (LCO); SiO2-Al2O3
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Funding
- NAM fellowship, India
- CSIR, India
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Hydroprocessing of light cycle oil was carried out in a fixed bed reactor. Sulfided hydroprocessing catalyst, NiMo/SiO2-Al2O3 was used, and poly-aromatic hydrocarbons in the obtained products were reduced to 5 wt%, from 64 wt% in the feed, at 380 degrees C and 60 bar. The GC-MS analysis confirmed that 3-ring poly-aromatic compounds converted to alkyl substituted tetralin compounds. Aromatics yield increased by nearly 4-6 times (50 wt %) in the hydroprocessed products, which could be suitable for gasoline pool due to improved octane number. Mono-aromatic hydrocarbons concentration obtained was 35-55% at all the operating conditions in the hydroprocessed products. Higher concentration of mono-aromatics leads to the improved octane number of the fuel. Properties like viscosity, cetane index, degrees API, and density of hydroprocessed LCO products, lead us to conclude that the obtained products are suitable for diesel as well. Under severe reaction conditions (380 degrees C, 70 bar), degrees API and cetane index values increased whereas viscosity and the density value of the products decreased. The results indicate that the catalyst shows very stable performance with time regarding meeting the required specifications for diesel.
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