NOVELTY - Manufacturing fuel alcohol via adsorptive separation of fermentation liquor distillation-free all-molecular sieve comprises (a) gas-lifting or decompressing the raw material of fermentation liquor and extracting; (b) heating ethanol steam, and pumping in a first level adsorption bed for adsorption treatment; and (c) pumping high concentration alcohol steam obtained in (b) in 3A adsorption bed to remove small amount of water in alcohol; and obtaining fuel alcohol.    USE - The process is useful for manufacturing fuel alcohol via adsorptive separation of fermentation liquor distillation-free all-molecular sieve (claimed).    ADVANTAGE - The method can save greater than or equal to 50% of energy; the method is able to realize continuous production, and refers to simple device, less land, high efficiency and low energy consumption; it has also broad application future for concentration production about manufacturing highly volatile small molecular organic solvent via biomass fermentation.    DETAILED DESCRIPTION - Manufacturing fuel alcohol via adsorptive separation of fermentation liquor distillation-free all-molecular sieve comprises (a) gas-lifting or decompressing the raw material of fermentation liquor comprising 1-15% of ethanol and extracting to obtain alcohol steam at 20-40 degrees C; (b) heating ethanol steam obtained in (a) up to 100-120 degrees C, and pumping in a first level adsorption bed whose temperature is kept at 100-120 degrees C for adsorption treatment and adsorption bed hydrophobic zeolite adsorbent; feeding quantity of ethanol steam is 20-200 g ethanol/hour; dynamic adsorption quantity of adsorbent is 80-240 g ethanol/kg adsorbent at an adsorption temperature 100 to 140 degrees C for 15-60 minutes; and (c) pumping high concentration alcohol steam obtained in (b) in 3A adsorption bed to remove small amount of water in alcohol; and obtaining fuel alcohol comprising 99.2-99.9% ethanol. An INDEPENDENT CLAIM is included for a device for manufacturing fuel alcohol via adsorptive separation of fermentation liquor distillation-free all-molecular sieve comprises fermentation tank (1), vacuum pump (2), hydrophobic adsorption bed (3), condenser (4), decompression / compression pump (5), drying bed (6), vacuum compression pump (7) and liquid collector (8) by connecting in turn via pipeline; where mature mash steam obtained in fermentation tank (1) is extracted and compressed by vacuum pump (2), and enters hydrophobic adsorption bed (3) via pipeline after being heated; water vapor from hydrophobic adsorption bed (3) enters condenser (4) to be cooled and discharged by forming water; alcohol steam desorbed from hydrophobic adsorption bed (3) passes decompression/compression pump (5), and pumped in drying bed (6) to be dried and dehydrated via pipeline, and enters liquid collector (8) after through vacuum compression pump (7) to be separated to obtain fuel alcohol comprising greater than or equal to 99.2% ethanol; hydrophobic absorbent used by hydrophobic adsorption bed (3) adopts hydrophobic zeolite adsorbent; 3A molecular sieve, anhydrous calcium sulfate, lime, or phosphorus pentoxide as drier.    DESCRIPTION OF DRAWING(S) - The drawing shows a schematic diagram of a device for manufacturing fuel alcohol.    Fermentation tank; (1)    Vacuum pump; (2)    Hydrophobic adsorption bed; (3)    Condenser; and (4)    Decompression/compression pump (5)