NOVELTY - A saccharification pre-processing of lignocellulosic biomass involves mixing lignocellulosic biomass and aqueous ammonia, obtaining a substrate mixture by sealed reaction container (2), making lignin dissociate from substrate or swell the substrate, obtaining ammonia containing saccharification pre-processed material by predetermined time while heating substrate mixture to predetermined temperature, obtaining ammonia separation saccharification pre-processed material by diffusing ammonia from ammonia containing saccharification pre-processed material and discharging out of reaction container.    USE - Saccharification pre-processing of lignocellulosic biomass used for manufacturing bioethanol.    ADVANTAGE - Ammonia separation saccharification pre-processed material is easily cooled without throwing in cooling water in reaction container.    DETAILED DESCRIPTION - A saccharification pre-processing of lignocellulosic biomass involves mixing lignocellulosic biomass and aqueous ammonia, obtaining a substrate mixture by sealed reaction container, making lignin dissociate from substrate or swell the substrate, obtaining ammonia containing saccharification pre-processed material by predetermined time while heating substrate mixture to predetermined temperature, obtaining ammonia separation saccharification pre-processed material by diffusing ammonia from ammonia containing saccharification pre-processed material, discharging out of reaction container, obtaining substrate and saccharogenic amylase mixture by adding solution which contains saccharogenic amylase in ammonia separation saccharification pre-processed material, and reducing ammonia separation saccharification pre-processed material to temperature corresponding the 2nd pressure by reducing internal pressure of reaction container to pressure beyond saturated vapor pressure of water.    DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of the apparatus structure which enforces the pre-processing.    Preprocessor (1)    Reaction container (2)    Ammonia water condenser (3)    Aqueous ammonia absorption tower (4)    Ammonia water tank (5)