Light Cycle Oil (LCO)

Light Cycle Oil (LCO) is a diesel boiling range product from Fluid Catalytic Cracking Units (FCCUs). It's a valuable byproduct in the petroleum refining process, specifically from FCCUs, and bridges the gap between lighter and heavier oil fractions. Light Cycle Oil (LCO) typically has a high sulfur, nitrogen, and aromatic content. While not suitable as a direct diesel blending component, it can be refined to produce low-sulfur diesel and other products.

Light Cycle Oil (LCO) is the most important fuel used in automobiles because of its high efficiency. The global demand for diesel is increasing than petrol but many older refineries have optimized their plant for producing more petrol than diesel. Light Cycle Oil (LCO) is the diesel boiling range material, which is produced in addition to gas and petrol in the FCCU. Light Cycle Oil (LCO) is treated in the diesel hydrotreater (DHT) unit to produce low sulfur environment friendly diesel.

Production of Light Cycle Oil (LCO) is increased in the FCCU by employing medium conversion mode rather than using traditional low conversion mode. Low conversion mode will cause a loss of gas production, deteriorate petrol octane rating and also increase the production of low valued slurry oil. With medium conversion technique both gas quality and quantity is maintained and improves the petrol octane rating. Medium conversion mode also reduces the amount of low valued slurry oil. Slurry oil contains Light Cycle Oil (LCO) boiling range material in it; hence a separate slurry oil stripping tower is employed to recover the LCO from slurry oil.

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