NOVELTY - System comprises: a pretreatment reactor for receiving the biomass material; a transfer system, in fluid communication with a discharge of the pretreatment reactor, capable of receiving cooling liquid and/or pH adjusting material to produce a cooled and pH controlled pretreated biomass (111); an enzyme addition system in fluid communication with the transfer system for the addition of enzyme solution to the cooled and pH controlled pretreated biomass; and an at least one vessel in fluid communication with the transfer system to transform the cooled and pH controlled pretreated biomass.    USE - The system is useful for enzymatically hydrolyzing a biomass material (claimed), such as lignocellulosic material, which is useful for making sugar based polymers, such as hemicellulose and cellulose.    ADVANTAGE - The system rapidly and efficiently hydrolyzed the biomass material to yield fermentable sugars contains a high proportion of cellulose, hemicellulose and lignin. The long felt for temperature and volume control of the pretreated biomass material to the reactor reduces addition of fresh, cooling liquid (e.g. water) to the hot pretreated biomass from the appropriate pretreatment process.    DETAILED DESCRIPTION - System comprises: a pretreatment reactor for receiving the biomass material; a transfer system, in fluid communication with a discharge of the pretreatment reactor, capable of receiving cooling liquid and/or pH adjusting material to produce a cooled and pH controlled pretreated biomass (111); an enzyme addition system in fluid communication with the transfer system for the addition of enzyme solution to the cooled and pH controlled pretreated biomass; and an at least one vessel in fluid communication with the transfer system to transform the cooled and pH controlled pretreated biomass from a higher apparent viscosity and high unconverted cellulose to sugar content to a lower apparent viscosity and lower unconverted cellulose to sugar content to create a liquefaction material, recalculate at least a portion of the liquefaction material to the pretreated biomass as at least a portion of the cooling liquid, and transfer at least a second portion of the liquefaction material to subsequent enzymatic hydrolysis reactor vessels to produce fully hydrolyzed biomass. An INDEPENDENT CLAIM is included for a process flow system, comprising: a pretreating reactor vessel configured to pretreat biomass at a temperature of at least 100 degrees C; a cooling device configured to cool a continuous flow of the pretreated biomass to a temperature of less than 80 degrees C, where the cooling device uses a continuous flow of at least a portion of a liquefaction material; a pH controlling device configured to add pH controlling material to the pretreated biomass; an at least first vessel configured to enzymatically hydrolyze the cooled and pH controlled pretreated biomass using at least one of an enzyme, yeast, thermophilic bacteria, mesophilic bacteria or other biological catalyst to produce a liquefaction material; at least one further enzymatic hydrolyzing reactor vessel configured to enzymatically hydrolyze at least a portion of the liquefaction material produced in the at least first vessel using at least one of an enzyme, yeast, thermophilic bacteria, mesophilic bacteria or other biological catalyst, where at least one further enzymatic hydrolyzing reactor vessel is coupled to receive at least a portion of the liquefaction material discharged from the at least first vessel; and a pump configured to transfer at least a portion of the liquefaction material to the cooling device.    DESCRIPTION OF DRAWING(S) - The figure shows a process flow diagram for pretreating biomass, cooling the pretreated biomass and enzymatically hydrolyzing the cooled pretreated biomass.    Pretreatment vessel (110)    Pretreated biomass (111)    Mixing stage (112)    Appropriate base (114)    Conduit. (116)