Research progress of LCO high-value conversion technology.

The demand for diesel has been decreasing year on year in recent years, LCO (light cycle oil of FCC unit), as the main component of diesel pools, has encountered the problem of overcapacity. The key to solving the overcapacity of LCO is to make reasonable use of the rich bicyclic aromatic hydrocarbon components in LCO and explore new technologies for the conversion of suitable aromatics to aromatics. Starting from the structural composition of LCO, this paper systematically summarizes the recent development status of six technologies for producing various high-value products using LCO as raw material. Among them, LTAG technology has a high yield of high octane gasoline, but reducing reaction hydrogen consumption is a major challenge; LCO preparation of BTX is an effective method for oil conversion, but high hydrogen consumption low selectivity of BTX lead to poor tech no-economics; the preparation of COP- NA resin by LCO can produce high-performance B resin with by-production of high cetane diesel components. However, the curing and crosslinking agents used still have the problem of being expensive. Finally, summary and outlook were made on the current technical issues of LCO production of high-value products. [ABSTRACT FROM AUTHOR]