Apparatus for producing sugar solution

Abstract

An apparatus for producing a sugar liquid includes a stirring tank for primary hydrolysis; a solid-liquid separation device; a secondary hydrolysis tank or press filtration device for secondary hydrolysis; a solid-liquid separation device(s) for the primary hydrolysate and secondary hydrolysate; and an ultrafiltration membrane device that separates the carbohydrase and the sugar liquid from the primary sugar liquid and/or the secondary sugar liquid.

1 . An apparatus for producing a sugar liquid comprising:
 a stirring tank for primary hydrolysis;   a solid-liquid separation device;   a secondary hydrolysis tank or press filtration device for secondary hydrolysis;   a solid-liquid separation device(s) for said primary hydrolysate and secondary hydrolysate; and   an ultrafiltration membrane device that separates said carbohydrase and said sugar liquid from said primary sugar liquid and/or said secondary sugar liquid.   
     
     
         2 . An apparatus for producing a sugar liquid comprising:
 a reaction vessel for primary hydrolysis;   a press filtration device having a warm-water supply tank;   a circulation line that circulates the filtrate from said press filtration device to said warm-water supply tank; and   an ultrafiltration membrane device that separates said carbohydrase and said sugar liquid from said primary sugar liquid and/or said secondary sugar liquid.   
     
     
         3 . The apparatus according to  claim 1 , further comprising a sugar liquid concentrating device equipped with a reverse osmosis membrane and/or nanofiltration membrane to concentrate said sugar liquid obtained with said ultrafiltration membrane device. 
     
     
         4 . The apparatus according to  claim 2 , further comprising a sugar liquid concentrating device equipped with a reverse osmosis membrane and/or nanofiltration membrane to concentrate said sugar liquid obtained with said ultrafiltration membrane device. 
     
     
         5 . The apparatus according to  claim 1 , wherein said sugar liquid is obtained by using a filamentous fungus-derived cellulose as a carbohydrase to hydrolyze cellulose by a method comprising:
 adding said carbohydrase to cellulose to perform primary hydrolysis and then subjecting the primary hydrolysate to solid-liquid separation into a primary sugar liquid and solids;   adding water to said solids and performing secondary hydrolysis, followed by subjecting the secondary hydrolysate to solid-liquid separation into a secondary sugar liquid and a residue; and   filtering said primary sugar liquid and/or secondary sugar liquid through an ultrafiltration membrane, and recovering said carbohydrase from the feed side and recovering a sugar liquid from the permeate side.   
     
     
         6 . The apparatus according to  claim 2 , wherein said sugar liquid is obtained by using a filamentous fungus-derived cellulose as a carbohydrase to hydrolyze cellulose by a method comprising:
 adding said carbohydrase to cellulose to perform primary hydrolysis and then subjecting the primary hydrolysate to solid-liquid separation into a primary sugar liquid and solids;   adding water to said solids and performing secondary hydrolysis, followed by subjecting the secondary hydrolysate to solid-liquid separation into a secondary sugar liquid and a residue; and   filtering said primary sugar liquid and/or secondary sugar liquid through an ultrafiltration membrane, and recovering said carbohydrase from the feed side and recovering a sugar liquid from the permeate side.   
     
     
         7 . The apparatus according to  claim 1 , wherein:
 the stirring tank comprises a filamentous fungus-derived cellulase as a carbohydrase and cellulose;   the solid-liquid separation device is adapted to separate a primary hydrolysate into a primary sugar liquid and solids and transfer the solids to a secondary hydrolysis tank or press filtration device for secondary hydrolysis;   the secondary hydrolysis tank or press filtration device comprise a water supply line and are adapted to receive the solids of the first solid-liquid separation device and water from the water supply line;   the solid-liquid separation device(s) for said primary hydrolysate and secondary hydrolysate is adapted to separate the primary hydrolysate and the secondary hydrolysate into a secondary sugar liquid and solids; and   the ultrafiltration membrane device separates said carbohydrase to a feed side and said sugar liquid to a permeate side.   
     
     
         8 . The apparatus according to  claim 2 , wherein:
 the reaction vessel comprises a filamentous fungus-derived cellulase as a carbohydrase and cellulose;   the press filtration device is adapted to separate a hydrolysate into a sugar liquid and solids; and   the ultrafiltration membrane device separates said carbohydrase to a feed side and said sugar liquid to a permeate side.