Abstract
ABSTRACT Fuel oil sediments from visbreaking Arab Light, Minas or Shengli vacuum resids have been compared. These sediment samples were separated into pentane solubles and pentane insolubles. Arab Light and Shengli resids are aromatic in nature and show similar trends in sediment formation and composition. For these results, small amounts of pentane insoluble sediments (<1 wt%) tend to be metal oxides, sulfides, precoke and coke, while larger amounts of pentane insoluble sediments are thermally cracked, lower H-content, polar asphaltic type materials. Waxy Minas resid, on the other hand, produces sediment that is composed of asphaltenes and waxes. Prevention of fuel oil sediment will be discussed.
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