Systems and methods for processing heavy oils by steam cracking following oil upgrades

摘要

According to one embodiment, the heavy oil may be treated in a manner that may include upgrading at least a portion of the heavy oil to form the upgraded oil, for upgrade the heavy oil. Is contacted with a hydrogenation demetallization catalyst, a transition catalyst, a hydrogenation denitrification catalyst, and a hydrocracking catalyst to remove at least some of the metal, nitrogen, or aromatic components from the heavy oil and upgrade. Of the upgraded oil, which includes forming the oil and passing the upgraded oil to a steam cracker and steaming the upgraded oil to form a steamed effluent. The final boiling point is 540 ° C. or lower.