Patent ID: 11905472
Assignee: KELLOGG BROWN & ROOT LLC
Field: Basic materials chemistry (Chemistry)
Classification: CPC C | IPC C

Claim 0:
1. A system for generating on-site a C6+C7 aromatic rich solvent stream, the system comprising:
a quench water separator drum having sequential compartments including a last compartment;
a primary fuel oil separation tower;
a secondary fuel oil separation tower;
a first line connecting the quench water separator drum to the primary fuel oil separation tower and configured to direct a hydrocarbon stream from the last compartment of the quench water separator drum to the primary fuel oil separation tower;
a makeup stream comprising a portion of a C6+C7 aromatic hydrocarbons rich bottoms stream essentially free of C5 hydrocarbon of a debutanizer receiving a hydrocarbon feed located downstream of an olefin plant, wherein the debutanizer is connected to the first line, and wherein the debutanizer comprises a C5 hydrocarbon rich side draw stream;
a recycle line connecting an overhead stream of the primary fuel oil separation tower to a feed stream of the quench water separator drum; and
a second line connecting a bottoms stream of the primary fuel oil separation tower to the secondary fuel oil separation tower.