TECHNOLOGY FOCUS - INSTRUMENTATION AND TESTING - Preferred Components: The pyrolysis unit is further defined as: a catalytic pyrolysis unit, where the apparatus is free from the deoxygenating unit; and a thermal pyrolysis unit, where the deoxygenating unit is present in the apparatus. The apparatus further comprises a co-processing unit in fluid communication with the extraction unit, upstream of the extraction unit.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Method: In the method (M), contacting the hydrocarbon stream with the solvent composition comprises contacting the hydrocarbon stream in a liquid phase with the solvent composition in a liquid phase, with oxygen-containing compounds transferred from the hydrocarbon stream to the solvent composition. The method (M) further comprises: separating an oxygenate-rich solvent composition in the liquid phase from the upgraded hydrocarbon stream in the liquid phase after contacting the hydrocarbon stream with the solvent composition; regenerating the oxygenate-rich solvent composition to produce an oxygen-containing compound stream and a oxygenate-lean solvent stream; separating the oxygenate-lean solvent stream into a drag stream and a recycle stream, where the recycle stream is combined with fresh solvent composition and contacts the hydrocarbon stream to reduce the residual oxygen-containing compound content of the hydrocarbon stream; and deoxygenating the pyrolysis product stream to produce the deoxygenated pyrolysis product. In the method (M): contacting the hydrocarbon stream with the solvent composition comprises contacting the hydrocarbon stream with the solvent composition comprising a basic solvent; contacting the hydrocarbon stream with the solvent composition comprises contacting the hydrocarbon stream with the solvent composition at a fraction of the solvent composition to the hydrocarbon stream of 2-10 vol.%, based on the total volume of the hydrocarbon stream; providing the hydrocarbon stream comprises pyrolyzing a biomass feed to produce a pyrolysis product stream; and pyrolyzing the biomass feed comprises catalytically pyrolyzing the biomass feed. In the method (M), catalytically pyrolyzing the biomass feed produces an intermediate pyrolysis stream, where the method (M) further comprises fractionating the intermediate pyrolysis stream to produce the deoxygenated pyrolysis product, and pyrolyzing the biomass feed comprises thermally pyrolyzing the biomass feed. In the method (M), providing the hydrocarbon stream comprises co-processing a pyrolysis product stream and a petroleum-based source of hydrocarbons to produce the hydrocarbon stream. In the method (M1), contacting the pyrolysis product stream or its derivative with the solvent composition comprises contacting the pyrolysis product stream in a liquid phase with the solvent composition in a liquid phase. In the method (M1), the pyrolysis product stream or its derivative is contacted with the solvent composition in an extraction column, where separating the oxygenate-rich solvent composition from the upgraded hydrocarbon stream comprises collecting the oxygenate-rich solvent composition in the extraction column and removing the oxygenate-rich solvent composition from a bottom of the extraction column, with the hydrocarbon stream exiting the extraction column at its top. EXAMPLE - No suitable example given.