Development of heavy metal passivators in residue fluid catalytic cracking process

The advancement of residual fluid catalytic cracking (RFCC) is significantly influenced by the development heavy metals passivation technology. Resids often include larger concentrations (Ni, V, and Fe) than gas oils, primarily in form porphyrin complexes salts organic acids. Under conditions, metals, especially Ni V residues oil deposit on catalyst induce adverse dehydrogenation reactions. catalyst's zeolite component destroyed these metals. While reducing yield gasoline, active increase yields coke hydrogen. Because most FCC units can only tolerate limited amounts hydrogen, level needs to be kept under control order achieve maximum productivity profit. Metal enhances activity and/or selectivity more desired products minimizing detrimental effects contaminating In this study, we will review deactivation mechanism RFCC process potential technological solutions concern.