A system and method are disclosed that allow a user to combine raw light hydrocarbons (e.g., C4 hydrocarbons) and raw heavy hydrocarbons (e.g., gasolines and/or C5+ hydrocarbons) streams together prior to hydrogenation. The system and method allow light and heavy hydrocarbons to be hydrogenated simultaneously within a single reactor. An system and method are also disclosed which provides specific conditions for minimizing light hydrocarbon losses during hydrocarbon processing. In particular, the disclosed method provides pressure conditions in post reactor stabilizers that facilitate venting of un-reacted hydrogen and the condensation of light hydrocarbons. Under the disclosed conditions, light hydrocarbon losses are minimized during the method and the condensed light hydrocarbons can be either recycled back into the system or utilized as a fungible energy source.