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    • 3. 发明授权
    • Cooking of cellulose pulp in a cooking liquor containing pre-evaporated black liquor
    • 在含有预蒸发黑液的蒸煮液中烹调纤维素纸浆
    • US07351306B2
    • 2008-04-01
    • US10501246
    • 2003-01-17
    • Mikael LindstromVidar Snekkenes
    • Mikael LindstromVidar Snekkenes
    • D21C3/26D21C3/24D21C3/02
    • D21C3/222D21C11/10
    • The method is for cooking of cellulose pulp in which the raw material, preferably in the form of chips, undergoes a successive elevation of temperature towards the cooking temperature while the chips are first impregnated with an impregnation liquor followed by cooking in a cooking liquor that is preferably alkali. Through the addition of pre-evaporated black liquor, either as early as the impregnation stage or during the subsequent cooking stage, an improved delignification process is achieved in which the pulp obtains improved properties, primarily with respect to strength/viscosity for a given degree of delignification, and also with respect to yield. The method can be used both for continuous cooking and for batch cooking of cellulose pulp.
    • 该方法用于烹饪纤维素纸浆,其中优选以碎屑形式的原料经历温度朝着烹饪温度的连续升高,同时首先用浸渍液浸渍木屑,然后在蒸煮液中烹饪, 优选碱。 通过加入预蒸发的黑液,无论是早在浸渍阶段还是在随后的烹饪阶段,实现了改进的脱木质过程,其中纸浆获得改进的性能,主要是对于给定程度的强度/粘度 脱木质素,以及产量。 该方法可用于连续烹饪和用于纤维素浆的分批烹饪。