Currently, refiners are experiencing a big challenge due to the slow economic growth, over diesel production and
decreased demand of it. Refineries are searching for technologies that could reduce diesel output, particularly the
inferior light cycle oil (LCO) fraction. Here in, this article mainly we will describes the industrialized technologies for
LCO processing such as LCO upgrading, LCO blending into available plants such as fluid catalytic cracking (FCC),
and hydro-refining/treating unit, LCO moderate hydrocracking, and LCO to some aromatic rich stream and also with
gasoline with the integration of selective hydro-refining and resulting optimized FCC unit. It is analyzed that the LCO
moderate hydrocracking can provide more gasoline at the expense of high H2
consumption, while LCO to aromatics
and gasoline (LTAG) technology needs more steps for clean fuel production and retrofitting of FCC plant. Based on
the analyses of current technologies, it is suggested that implementation of such technologies should consider the
configuration of refineries, as well as the benefit of end users.