TECHNOLOGY FOCUS - CHEMICAL ENGINEERING - Preferred Method: In converting biomass to biomass-derived fuels and chemicals, the solvent comprising one or more members selected from water, in situ generated C2+O2+ oxygenated hydrocarbons, recycled C2+O2+ oxygenated hydrocarbons, bioreforming solvents, organic solvents, organic acids, and a mixture. The solid phase further comprises the deconstruction catalyst. The method further comprises: separating the deconstruction catalyst from the liquid phase; washing the deconstruction catalyst in one or more washing medium; regenerating the deconstruction catalyst in the presence of oxygen or hydrogen, at a regenerating pressure and regenerating temperature where carbonaceous deposits are removed from the deconstruction catalyst; and reintroducing the deconstruction catalyst to react with the biomass feed stream. The biomass component comprises at least one member selected from recycled fibers, corn stover, bagasse, switch grass, miscanthus, sorghum, wood, wood waste, agricultural waste, algae, and municipal waste. The deconstruction catalyst comprises an acidic support or a basic support. The deconstruction catalyst comprises a support and a member selected from ruthenium (Ru), cobalt (Co), rhodium (Rh), palladium (Pd), nickel (Ni), molybdenum (Mo), and alloys. The deconstruction catalyst further comprises a member selected from platinum (Pt), rhenium (Re), iron (Fe), iridium (Ir), copper (Cu), manganese (Mn), chromium (Cr), molybdenum (Mo), boron (B), tungsten (W), vanadium (V), niobium (Nb), tantalum (Ta), titanium (Ti), zirconium (Zr), yttrium (Y), lanthanum (La), scandium (Sc), zinc (Zn), cadmium (Cd), silver (Ag), gold (Au), tin (Sn), germanium (Ge), phosphorus (P), aluminum (Al), gallium (Ga), indium (In), thallium (Tl), and alloys. The support comprises a member selected from a nitride, carbon, silica, alumina, zirconia, titania, vanadia, ceria, boron nitride, heteropolyacid, kieselguhr, hydroxyapatite, zinc oxide, chromia, zeolites, tungstated zirconia, titania zirconia, sulfated zirconia, phosphated zirconia, acidic alumina, silica-alumina, sulfated alumina, phosphated alumina, theta alumina, and mixtures. The support is modified by treating the support with a modifier selected from tungsten, titania, sulfate, phosphate, or silica. The deconstruction temperature is in the range of 120-350 degrees C. The deconstruction pressure is in the range of 300-2500 psi. The washing medium comprises a liquid selected from water, an acid, a base, a chelating agent, alcohols, ketones, cyclic ethers, hydroxyketones, aromatics, alkanes, and combinations. The step of washing the deconstruction catalyst comprises a first step of washing the deconstruction catalysts with a first washing solvent and a second step of washing the deconstruction catalyst with a second washing solvent. The first washing solvent comprises a liquid selected from water, an acid, a base, a chelating agent, and combinations, and the second washing solvent comprises a liquid selected from alcohols, ketones, cyclic ethers, hydroxyketones, aromatics, alkanes, and combinations. The first washing solvent comprises a liquid selected from alcohols, ketones, cyclic ethers, hydroxyketones, aromatics, alkanes, and combinations, and the second washing solvent comprises a liquid selected from water, an acid, a base, a chelating agent, and combinations. The regeneration temperature is in the range of 120-450 degrees C, and is adjusted at a rate of 20-60 degrees C/hour. The regeneration of the deconstruction catalyst further comprises providing a gas stream comprising an inert gas and oxygen, the inert gas provided at a gas flow of between 600-1200 ml gas/ml catalyst per hour and the oxygen provided at a concentration of 0.5-10% of the gas stream. More than 90% of the carbonaceous deposits are removed from the deconstruction catalyst. The condensation catalyst comprises a metal selected from Cu, Ag, Au, Pt, Ni, Fe, Co, Ru, Zn, Cd, Ga, In, Rh, Pd, Ir, Re, Mn, Cr, Mo, W, Sn, osmium (Os), an alloy, and a combination. The condensation catalyst further comprises a modifier selected from cerium (Ce), lanthanum (La), Y, lithium (Li), sodium (Na), potassium (K), rubidium (Rb), cesium (Cs), magnesium (Mg), calcium (Ca), strontium (Sr), barium (Ba), P, boron (B), bismuth (Bi), and a combination. The condensation catalyst comprises a member selected from an acidic alumina, aluminum phosphate, silica-alumina phosphate, amorphous silica-alumina, sulfated alumina, theta alumina, aluminosilicate, zeolites, zirconia, sulfated zirconia, tungstated zirconia, titania zirconia, phosphated zirconia, tungsten carbide, molybdenum carbide, titania, sulfated carbon, phosphated carbon, phosphated silica, phosphated alumina, acidic resin, heteropolyacid, inorganic acid, and a combination. The C4+ compound is benzene, toluene or xylene. The hydrogen is selected from external hydrogen, recycled hydrogen or in situ generated hydrogen. The in situ generated hydrogen is derived from the C2+O2+ oxygenated hydrocarbons. Alternatively, converting biomass to biomass-derived fuels and chemicals comprises: providing a biomass feed stream comprising a solvent and a biomass component comprising cellulose, hemicellulose or lignin; catalytically reacting the biomass feed stream with hydrogen and a deconstruction catalyst at a deconstruction temperature and a deconstruction pressure to produce a product stream comprising a vapor phase, a liquid phase and a solid phase, the vapor phase comprising one or more volatile C2+O1-2 oxygenates, the liquid phase comprising water and one or more C2+O2+ oxygenated hydrocarbons, and the solid phase comprising extractives; separating the volatile C2+O1-2 oxygenates from the liquid phase and solid phase; catalytically reacting the volatile C2+O1-2 oxygenates in the presence of a condensation catalyst at a condensation temperature and condensation pressure to produce a product mixture comprising two or more C4+ compounds selected from a C4+ alcohol, a C4+ ketone, a C4+ alkane, a C4+ alkene, a C5+ cycloalkane, a C5+ cycloalkene, a aryl, and a fused aryl; and distilling the product mixture to provide a composition selected from an aromatic fraction, a gasoline fraction, a kerosene fraction and a diesel fraction. The aromatic fraction comprises benzene, toluene or xylene. The gasoline fraction has a final boiling point in the range of 150-220 degrees C, a density at 15 degrees C in the range of 700-890 kg/m3, a research octane number (RON) in the range of 80-110, and a motor octane number (MON) in the range of 70-100. The kerosene fraction has an initial boiling point in the range of 120-215 degrees C, a final boiling point in the range of 220-320 degrees C, a density at 15 degrees C in the range of 700-890 kg/m3, a freeze point of -40 degrees C or lower, a smoke point of at least 18 mm, and a viscosity at -20 degrees C in the range of 1-10 cSt. The diesel fraction has a T95 in the range of 220-380 degrees C, a flash point in the range of 30-70 degrees C, a density at 15 degrees C in the range of 700-900 kg/m3, and a viscosity at 40 degrees C in the range of 0.5-6 cSt. In a second alternative case, converting biomass to biomass-derived fuels and chemicals comprises: providing a biomass feed stream comprising a solvent and a biomass component, the solvent comprising one or more members selected from water, in situ generated C2+O2+ oxygenated hydrocarbons, recycled C2+O2+ oxygenated hydrocarbons, bioreforming solvents, organic solvents, organic acids, and a mixture, and the biomass component comprising cellulose, hemicellulose and lignin; catalytically reacting the biomass feed stream with hydrogen and a deconstruction catalyst at a deconstruction temperature and a deconstruction pressure to produce a product stream comprising a vapor phase, a liquid phase and a solid phase, the vapor phase comprising one or more volatile C2+O1-2 oxygenates, the liquid phase comprising water and one or more C2+O2+ oxygenated hydrocarbons, the solid phase comprising extractives, and the deconstruction catalyst comprising a support and a first member selected from Ru, Co, Rh, Pd, Ni, Mo, and alloys, and at least one additional member selected from Pt, Re, Fe, Ir, Cu, Mn, Cr, Mo, B, W, V, Nb, Ta, Ti, Zr, Y, La, Sc, Zn, Cd, Ag, Au, Sn, Ge, P, Al, Ga, In, TI, and alloys; separating the volatile C2+O1-2 oxygenates from the liquid phase and solid phase; and catalytically reacting the volatile C2+O1-2 oxygenates in the presence of a condensation catalyst at a condensation temperature and condensation pressure to produce a C4+ compound comprising a member selected from C4+ alcohol, C4+ ketone, C4+ alkane, C4+ alkene, C5+ cycloalkane, C5+ cycloalkene, aryl, fused aryl, and a mixture. Preferred Composition: In the chemical composition, the C4+ compound is benzene, toluene or xylene. EXAMPLE - No suitable example given.