Process and system for upgrading hydrocracker unconverted heavy oil

A process for upgrading unconverted heavy oil, the process consisting of:

• providing an unconverted heavy oil feed from an ebullated bed hydrocracker, wherein the unconverted heavy oil feed comprises hydrocracker resid;
• adding a first aromatics feed to the unconverted heavy oil feed to form a mixture;
• passing the mixture directly to a filtration separation process to remove insolubles, thereby forming an unconverted heavy oil stream;
• combining a second aromatics feed with the unconverted heavy oil stream to form a second mixture;
• passing the second mixture directly to a heavy oil hydrotreating process, thereby forming a hydrotreated heavy oil stream from the second mixture;
• wherein the first and the second aromatics feeds comprise an aromatics content of greater than about 20 vol. % aromatics;
• the second mixture passed to the heavy oil hydrotreating process has an API in the range of −5 to 15, a sulfur content in the range of 0.7 to 3.5 wt. %, a microcarbon residue content of 8 to 35 wt. %, and a total content of Ni and V of less than 150 ppm;
• the hydrotreated heavy oil stream from the hydrotreating process has an API in the range of 2 to 18, a sulfur content in the range of 0.05 to 0.70 wt. %, a microcarbon residue content of 3 to 18 wt. %, and a total content of Ni and V of less than 30 ppm;
• and
• wherein the process does not include a maturation step, does not include an aging step, and does not include a sedimentation step other than the filtration.