To provide a method for homogeneously digesting a lignocellulose material by using a continuous digester.
The method for digesting the lignocellulose material by using the continuous digester comprising an impregnation zone, a digestion zone and a cleaning zone in order comprises adding a digesting liquor at least to one position per each zone, and extracting a black liquor at the finishing of the impregnation zone and the digestion zone. The recovered black liquor after recovering flushed steam is cooled to ≤99°C, and the cooled recovered black liquor in an amount regulated so that the liquid ratio at the impregnation zone may be 3-7 is added to the lignocellulose material simultaneously with the digesting liquor at the starting of the impregnation zone.
NISHIMURA NORIAKI
IZUKA TOMOFUMI
