Abstract
Clarified oil (CLO) from a commercial fluid catalytic cracking unit was subjected to solvent extraction followed by solvent dewaxing and adsorption chromatography to analyze its various components for different end-use applications. The clarified oil was first solvent extracted using N-methyl pyrrolidone (NMP) to produce paraffinic rich raffinate (68.9 wt% yield). The raffinate thus obtained was dewaxed using methyl isobutyl ketone (MIBK) to get an oil of pour point 0°C. This dewaxed oil was then subjected to adsorption chromatography to determine group II base oil potential through yield v/s viscosity index (VI) curve. The results revealed that clarified oil has an actual potential of around 27.1 wt% of group II base oil components, suggesting that clarified oil can be used as an additional source of feed for production of group II base oil. This article also describes the potential of other components in clarified oil such as slack wax (24.2 wt%), aromatics (31.1 wt%), and low VI oil (17.6 wt%).
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