NOVELTY - A methanol-production system (10A) has a biomass gasifier (20), a gasified-gas (24) purifier (25), a gas reforming/refining device (40) which purifies natural gas (41) into hydrogen-rich gas (43) while reforming natural gas, a methanol synthesis installation (30) which synthesizes methanol (31) using the biomass-derived purified gas (26) and hydrogen-rich gas. When methanol is synthesized, the parameter which regulates the ratio of carbon source with respect to hydrogen is controlled to 1.05 or more after mixing of purified gas and hydrogen-rich gas.    USE - System is used for producing methanol (claimed) useful as liquid fuel.    ADVANTAGE - The system enables production of methanol with high yield.    DETAILED DESCRIPTION - A methanol-production system consists of a biomass gasifier which gasifies supplied biomass (21) to obtain biomass gasified gas, a purifier which purifies the biomass gasified gas, a gas reforming/refining device which purifies natural gas into hydrogen-rich gas while carrying out gas reforming of natural gas, a methanol synthesis installation which synthesizes methanol using the biomass-derived purified gas obtained by gas reforming/refining device and hydrogen-rich gas derived from natural gas. When methanol is synthesized, the parameter (M) which regulates the ratio of carbon source (carbon monoxide (CO), carbon dioxide (CO2)) with respect to hydrogen (H2/(2CO+3CO2)) is controlled by a controller to 1.05 or more after mixing of biomass-derived purified gas and hydrogen-rich gas. An INDEPENDENT CLAIM is included for production of methanol.    DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of the methanol production system. (Drawing includes non-English language text)    Methanol production system (10A)    Biomass gasifier (20)    Biomass (21)    Gasified gas (24)    Purifier (25)    Purified gas (26)    Methanol synthesis installation (30)    Methanol (31)    Hydrogen-lean off gas (32A)    Gas reforming/refining device (40)    Natural gas (41)    Hydrogen-rich gas (43)