| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for producing a lignocellulose pulp by which the degree of sulfurization in a digester is optimized and the amount of sodium sulfide used in a process is reduced. SOLUTION: A pulverized lignocellulosic material 1 is fed and a stream 5 of a white liquor and at least one stream 7 or 15 of an oxidized white liquor are fed to bring the pulverized lignocellulosic material 1 into contact with the white liquor 5 to prepare an intermediate mixture containing a lignocellulosic material partially subjected to delignifying treatment. The resultant intermediate mixture is then brought into contact with the oxidized white liquors 7 and 15 to produce a lignocellulose pulp 19 which is further subjected to the delignifying treatment.
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