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Behaviors of metal compounds during hydrodemetallization of atmospheric residue
박주일,Adel Al-Mutairi,Abdulazeem M.J. Marafie,Isao Mochida,윤성호,Xiaoliang Ma 한국공업화학회 2016 Journal of Industrial and Engineering Chemistry Vol.40 No.-
Behaviors of vanadium and nickel species during hydrodemetallization (HDM) were studied. A Kuwaitatmospheric residue and its hydrodemetallized products from a pilot plant at mild and severe reactionconditions were characterized by using GPC coupled with ICP-MS and high temperature GC-AED afterseparation of them into saturates, aromatics, resins, and asphaltenes. It was found that the HDMreactivity of the vanadium species, especially those with lower molecular weight, was higher than that ofNi species, probably due to the higher polarity of the former than the latter. HDM of the vanadiumspecies in the asphaltene was more difficult than that in the resin. The average molecular weight of metalspecies through higher temperature HDM was higher than that through the lower temperature HDM,although the metal removal at the higher temperature is higher.
박주일,Adel Al-Mutairi,Abdulazeem M.J. Marafie,윤성호,Isao Mochida,Xiaoliang Ma 한국공업화학회 2016 Journal of Industrial and Engineering Chemistry Vol.34 No.-
The aim of this study is to characterize the vanadium and nickel species in saturate, aromatic, resin andasphaltene fractions from typical Kuwait atmospheric residues, using GPC coupled with an ICP–MS andHT GC–AED. It was found that most of vanadium and nickel complexes were in both resin and asphaltenefractions, while there was very small amount of non-porphyrinic metal species in the aromatic fractions. The nickel complexes show higher molecular weight than that of the vanadium complexes. Theporphyrin units existing in the asphaltenes linked to the larger aggregates, while in the resins associatedwith less aggregates.