NOVELTY - A biomass material is pyrolyzed to obtain biomass-derived pyrolyzed product (122). A petroleum-derived hydrocarbon composition (102) comprising 0.2 wt.% or more 7C-asphaltene with respect to total weight of petroleum-derived hydrocarbon composition is provided. At least a portion of biomass-derived pyrolyzed product and at least a portion of petroleum-derived hydrocarbon composition are mixed to obtain hydrocarbon-containing mixture. The hydrocarbon-containing mixture is subjected to dewatering process to obtain dewatered hydrocarbon-containing mixture.    USE - Process for converting biomass material to produce hydrocarbon-containing mixture used for producing fuel component and chemical component (claimed).    ADVANTAGE - The method enables conversion of biomass material by simple and economical process.    DETAILED DESCRIPTION - A biomass material is pyrolyzed to obtain biomass-derived pyrolyzed product. A petroleum-derived hydrocarbon composition comprising 0.2 wt.% or more 7C-asphaltene, based on the total weight of petroleum-derived hydrocarbon composition is provided. At least a portion of biomass-derived pyrolyzed product and at least a portion of petroleum-derived hydrocarbon composition are mixed to obtain hydrocarbon-containing mixture. The hydrocarbon-containing mixture is subjected to dewatering process to obtain dewatered hydrocarbon-containing mixture. The petroleum-derived hydrocarbon composition has total acid number of 0.5 mg potassium hydroxide/g or more, density of 0.8 g/ml or more at 15.5 degrees C, and viscosity of 500 cSt at 37.8 degrees C. An INDEPENDENT CLAIM is included for production of fuel components and/or chemical components, which involves dewatering the hydrocarbon-containing mixture, optionally upgrading dewatered hydrocarbon-containing mixture, and converting dewatered hydrocarbon-containing mixture to fuel components and/or chemical components by hydrocarbon conversion process.    DESCRIPTION OF DRAWING(S) - The drawing shows a block diagram explaining the process of converting biomass material.    Petroleum-derived hydrocarbon composition (102)    Naphtha diluent (104)    Separator (106)    Biomass-derived pyrolyzed product (122)    Dewatering unit (140)