Which feeds are supplied to the GRU?

The correct answer indicates that both Heavy Reformate and Xylene Bottoms are supplied to the Gasoline Recovery Unit (GRU). This unit typically processes feeds containing various aromatic compounds and heavier hydrocarbons that can be recycled or further treated to improve gasoline quality.

Heavy Reformate is a significant feed for the GRU because it contains a higher concentration of aromatic compounds, which are valuable for gasoline blending. The GRU aims to recover light hydrocarbons from these heavier feeds, thereby enhancing the overall yield of usable fuels.

Xylene Bottoms, on the other hand, are a byproduct of the xylene separation process and can also be rich in aromatic compounds. Similar to Heavy Reformate, they provide a source of hydrocarbons that the GRU can process to improve gasoline specifications or to recover lighter fractions.

By utilizing both feed types, the GRU can optimize the recovery of useful gasoline components, which contributes to overall refinery efficiency and product quality. This synergistic use of feeds allows for better yield and enhances the operational effectiveness of the refinery’s product slate.