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RUSSIAN LIGHT CYCLE OIL (LCO) GOST
Light cycle oil (LCO) is a diesel boiling range product from fluid
catalytic cracking units. However, LCO is a poor diesel fuel
blending component without further processing.
Light Cycle Oil (LCO) is a diesel boiling range product from Fluid
Catalytic Cracking Units (FCCUs). However, LCO is a poor diesel
fuel blending component without further processing. Oil refining is
an industrial process which involves separation, conversion, and
finishing. FCC centered refinery uses Fluid Catalytic Cracking Unit
(FCCU) has the major conversion unit. FCCU is responsible for the
production of petrol, LPG and Light Cycle Oil (LCO).
Diesel 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 is the
diesel boiling range material, which is produced in addition to gas
and petrol in the FCCU. LCO is treated in the diesel hydrotreater
(DHT) unit to produce low sulphur environment friendly
diesel.
Production of 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 LCO boiling
range material in it; hence a separate slurry oil stripping tower
is employed to recover the LCO from slurry oil.
