REACTIVITY OF FCC SLURRY BEFORE AND AFTER AROMATIC ENRICHMENT

With the usage of FTIR, 1?HNMR, 13G*CNMR and group composition analysis, the reactivity of FCC slurry, before and after aromatic enrichment, to synthesize Bstage BA series pitch resins were investigated. In the original FCC slurry, the concentration of saturates is relatively high, and the aromatic ring substituents are quiet varied. The FCC slurry has a complex composition, the uniformity is low and the steric hindrance in a chemical reaction is high. In comparison, an aromatic enriched fraction extracted from the FCC slurry by a solvent, the long alkyl chain substituents are few. The fraction composition is relatively simple, uniformity is higher and steric hindrance in a chemical reaction is lower. Consequently the reactivity of the aromatic enriched fraction extracted from the FCC slurry is higher than that of the original FCC slurry. Aromatic enrichment by solvent extraction improved the reactivity of FCC slurry and produces a highquality feedstock for recatalytic cracking.