NOVELTY - Method (M1) for producing at least one fluid chemical intermediate from a hydrocarbonaceous material, comprises: (a) feeding a hydrocarbonaceous material to a reactor; (b) pyrolyzing within the reactor at least a portion of the hydrocarbonaceous material under reaction conditions sufficient to produce at least one pyrolysis product; catalytically reacting at least a portion of the pyrolysis products, and separating at least a portion of the hydrocarbon products; and reacting a portion of the hydrocarbon products to produce a chemical intermediate.    USE - The method is useful for producing fluid chemical intermediate and fluid hydrocarbon product from a hydrocarbonaceous material, where the chemical intermediates comprise at least one component including ethylene oxide, ethanol, acetic acid, acetaldehyde, acrylonitrile, acrylic acid, styrene, cumene, ethyl benzene, terephthalic acid, monomethyl terephthalate, dimethyl terephthalate, polyethyleneterephthalate, polybutylene terephthalate, phthalic anhydride, phenol, ethylbenzene, cyclohexane, adipic acid, benzaldehyde, benzoic acid, hexanes, ethylene glycol, polyethylene, hexamethylenediamine, adiponitrile, nylon 6, nylon 6,6, toluene diisocyanate, toluene diamine, methylene diphenyl diisocyanate, polyurethanes, polycarbonates, polystyrenes (general purpose. polystyrene crystals, high impact polystyrene and expandable polystyrene), acrylonitrile-styrene butadiene and styrene-acrylonitrile copolymers and styrene-butadiene rubbers, alkylphenols, polymethylphenols, ethylphenols, isopropylphenols, secondary-butyl phenols, tertiary-butylphenols, tertiary-pentylphenols, cycloalkylphenols, aralkylphenols, alkenylphenols, indanols, catechol, trihydroxybenzenes, pyrogallol, hydroxyhydroquinone, phloroglucinol, bisphenols (bishydroxyarylalkanes), hydroxybiphenyls, phenol ethers, phenol-formaldehyde resins, phenolic/polysiloxane resins, fibers, beverage, food and other liquid containers, thermoform plastic materials and/or engineering resins (all claimed).    ADVANTAGE - The method improves the overall yield of chemical intermediates, improves the thermal balance, and generates useful and different by-products.    DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a method (M2) for producing at least one fluid hydrocarbon product from a hydrocarbonaceous material comprising: steps (a) and (b) as above per se; catalytically reacting within the reactor at least a portion of the pyrolysis products under reaction conditions sufficient to produce at least one fluid hydrocarbon products comprising olefins and aromatics; reacting at least a portion of the fluid hydrocarbon products to produce at least one chemical intermediate; and feeding at least a portion of the byproducts of the chemical intermediate production back to the pyrolysis reactor.