Tag Archives for asphaltenes
The yield of precipitated asphaltenes cannot be reduced because the asphaltenes in the coker feed will produce coke regardless of coke drum operating parameters.
Shot coke is composed of precipitated asphaltenes. Asphaltenes are large hydrocarbon molecules that are dispersed in the lighter aromatic and paraffinic oils in vacuum residuum. When these lighter molecules thermally crack and vaporize in the coke drum, the asphaltenes agglomerate … Continue reading