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    • 33. 发明申请
    • PROCESS FOR DIGESTING LIGNOCELLULOSE MATERIAL
    • 消化纤维素材料的方法
    • WO00073573A1
    • 2000-12-07
    • PCT/JP2000/003403
    • 2000-05-26
    • D21C3/00D21C3/02D21C3/22
    • D21C3/222D21C3/022
    • A continuous process for digesting a lignocellulose material using a one-vessel digestion apparatus, wherein a digester has, from the top towards the bottom thereof, an overhead zone, an upper digestion zone and a lower digestion zone, each zone has a strainer at its bottom, and a black digestion liquor extracted is discharged from at least one strainer to the outside of the digestion system, characterized in that use is made of a chip from a broad-leaved tree or a needle-leaved tree; an alkaline digestion liquid is added at the top of the digester which liquid contains a polysulfide type sulfur in a concentration of 3 to 20 g/L as sulfur, and contains sulfur in an amount of 45 to 100 wt. % and an effective alkali in an amount of 45 to 79 wt. %, both percentages being relative to the respective total amounts contained in the alkaline digestion liquid introduced to the above digestion system; an alkaline digestion liquid containing 0.01 to 105 wt. % of a quinone compound relative to an absolutely dried chip is fed to the digester. The process can be employed for lowering the kappa value for the same percentage of addition of an effective alkali and also for improving the yield of pulp for the same kappa value.
    • 一种使用单容器消化装置消化木质纤维素材料的连续方法,其中消化器从顶部至底部具有顶部区域,上部消化区域和下部消化区域,每个区域在其上具有过滤器 提取的黑色消化液从至少一个过滤器排出到消化系统的外部,其特征在于使用来自阔叶树或针叶树的芯片; 在蒸煮器的顶部添加碱性消化液,该液体含有浓度为3〜20g / L的硫化硫型硫,硫含量为45〜100重量%。 %,有效碱为45〜79重量%。 %,这两个百分比都相对于引入上述消化系统的碱性消化液中含有的各自的总量; 碱性消化液含有0.01〜105wt。 将相对于绝对干燥的芯片的醌化合物的%进料到蒸煮器。 该方法可以用于降低相同百分比的有效碱的κ值,并且也可用于提高相同卡帕值的纸浆产量。
    • 37. 发明申请
    • TWO-STAGE KRAFT COOKING
    • 两阶段克拉夫烹饪
    • WO1996002698A1
    • 1996-02-01
    • PCT/CA1995000426
    • 1995-07-17
    • PULP AND PAPER RESEARCH INSTITUTE OF CANADALI, Jian
    • PULP AND PAPER RESEARCH INSTITUTE OF CANADA
    • D21C03/26
    • D21C3/022D21C3/26
    • A method for the production of kraft pulps in a digester, by modifying the cooking chemical concentration, and lignin concentrationprofiles during the cook, has provided extended delignification and improved selectivity in a simpler way than has previously been possible. The cooking is performed at an elevated temperature in two stages. The first stage liquor is a mixture of 1) the spent liquor of the second stage and 2) a portion of the conventional charge of fresh cooking chemicals needed for the complete cook. The second stage liquor is made up by adding an aqueous diluent, for example, fresh water or washing filtrate to the remaining portion of the fresh cooking chemicals.
    • 在蒸煮器中生产牛皮纸浆的方法,通过改变煮熟时的烹饪化学浓度和木质素浓度的方法,提供了比先前可能的更简单的脱木质素和改进的选择性。 烹饪是在两个阶段的高温下进行的。 第一阶段的液体是1)第二阶段的废液和2)完全烹调所需的常规新鲜烹饪食物的一部分的混合物。 第二阶段的液体是通过向剩余部分的新鲜烹饪化学品中加入水性稀释剂例如淡水或洗涤滤液来制备的。
    • 40. 发明申请
    • COST EFFICIENT KRAFT COOKING METHOD USING POLYSULFIDE COOKING LIQUOR
    • 使用多糖烹饪液成本高效的克拉夫烹饪方法
    • WO2016032374A1
    • 2016-03-03
    • PCT/SE2014/050975
    • 2014-08-26
    • VALMET ABANTONSSON, StefanOLSSON, Krister
    • ANTONSSON, StefanOLSSON, Krister
    • D21C1/06D21C3/02D21C3/24
    • D21C3/022D21C1/06D21C3/24
    • The invention is related to a method for the preparation of kraft pulp with increased pulping yield from lignin-containing cellulosic material using polysulfide cooking liquor. In order to obtain a cost efficient system both in aspects of investment costs but also in aspects of heat economy of operating the process is most of the total charge of alkali charged as heated polysulfide liquor to an first atmospheric vessel, wherein the hot polysulfide liquor flashes off steam providing most if not all of the necessary steaming effect for the cellulose material. The polysulfide liquor is then allowed to impregnate the cellulose material at a temperature closer to cooking temperature but still so low that essentially no delignification occurs in impregnation vessel, as the H-factor in impregnation vessel is kept within 1-20.
    • 本发明涉及一种使用多硫化物蒸煮液从含木质素的纤维素材料制备牛皮纸浆的方法,该方法具有增加的含木质纤维素材料的制浆量。 为了在投资成本方面获得成本有效的系统,而且在操作的热经济方面,大部分作为加热的多硫化合物加入到第一大气容器中的碱的总电荷,其中热的多硫化物液体闪烁 蒸汽提供纤维素材料的大部分(如果不是全部)必要的蒸汽效果。 然后允许多硫化物液体在更接近烹饪温度的温度下浸渍纤维素材料,但仍然低至浸渍容器中基本上不会发生脱木质素,因为浸渍容器中的H-因子保持在1-20℃内。