An apparatus and method are provided for processing hydrocarbon feeds. The method may contact hydrogen (H2) and a hydrocarbon feed containing ≧10 wt % resid in the hydrocarbon feed with a catalyst to form a hydroprocessed product. Then, a pyrolysis feed derived from the hydroprocessed product is exposed at high-severity thermal pyrolysis operating conditions to produce a reactor product that comprises ethylene and acetylene. Further, at least a portion of the hydrogen (H2) may be separated from the reactor product, wherein the hydrogen (H2) contacting the catalyst includes at least a portion of the separated hydrogen (H2).