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    METHOD FOR PRODUCING PULP
    5.
    发明授权
    METHOD FOR PRODUCING PULP 有权
    生产纸浆的方法

    公开(公告)号：EP3023539B1

    公开(公告)日：2018-05-16

    申请号：EP15397535.4

    申请日：2015-10-12

    申请人： UPM-Kymmene Corporation

    发明人： Tienvieri, Taisto ,  Latomaa, Ari ,  Suojanen, Vesa

    IPC分类号： D21C3/06 ,  D21B1/02 ,  D21B1/12 ,  D21H11/02 ,  D21C3/00

    CPC分类号： D21H11/02 ,  D21B1/021 ,  D21B1/12 ,  D21C3/00 ,  D21C3/06

    摘要： The present application provides a method for producing chemithermomechanical pulp from wood chips, such as softwood chips, the method comprising feeding the chips into a pressurized first preheater, preheating the chips to produce softened chips, discharging the softened chips from the first preheater through a first feeding device arranged to maintain the overpressure, feeding the softened chips to a pressurized second preheater, treating the chips with steam and alkaline chemicals to produce impregnated chips, discharging the impregnated chips from the second preheater through a second feeding device arranged to maintain the overpressure, feeding the impregnated chips to a refiner, and refining the impregnated chips to produce chemithermomechanical pulp. The present application also provides a device for carrying out said method, a wood pulp product obtained with said method and paper product containing said wood pulp product.

    VERFAHREN ZUM DELIGNIFIZIEREN LIGNOCELLULOSISCHER ROHSTOFFE
    8.
    发明公开
    VERFAHREN ZUM DELIGNIFIZIEREN LIGNOCELLULOSISCHER ROHSTOFFE 审中-公开
    方法脱木素木质纤维商品

    公开(公告)号：EP1399620A2

    公开(公告)日：2004-03-24

    申请号：EP02762312.3

    申请日：2002-07-01

    申请人： Voith Paper Fiber Systems GmbH & Co. KG

    发明人： PATT, Rudolf ,  KORDSACHIA, Othar ,  ROSE, Björn

    IPC分类号： D21C3/06

    CPC分类号： D21C3/06

    摘要： The invention relates to a method for delignifying lignocellulosic raw materials by using sulfites in the presence of an alkaline component, especially sodium hydroxide or sodium carbonate or a mixture thereof in an aqueous solution at a high temperature and high pressure. The invention is characterized in that a first partial fragment of the alkaline component is added when the aqueous solution starts to decompose and in that at least a second partial fragment of the alkaline component is added only when delignification begins.

    Bleached, strong sulfite chemical pulp, a process for the production thereof and products derived therefrom
    9.
    发明公开
    Bleached, strong sulfite chemical pulp, a process for the production thereof and products derived therefrom 审中-公开
    漂白化学亚硫酸盐纸浆具有良好的强度，处理其生产和产品制成

    公开(公告)号：EP1375734A1

    公开(公告)日：2004-01-02

    申请号：EP02013497.9

    申请日：2002-06-17

    申请人： SCA Hygiene Products GmbH

    发明人： Geisenheiner, Andreas ,  Reinhard, Armin ,  Kordsachia, Othar ,  Patt, Rudolf

    IPC分类号： D21C3/06 ,  D21C9/10

    CPC分类号： D21C9/163 ,  D21C3/10

    摘要： The present invention relates to a process for preparing a bleached sulfite chemical pulp comprising:

    delignification of chips of a lignocellulosic material in a sulfite pulping process beyond the defibration point of said material until kappa values of below 50 are reached, and
    bleaching of the fibrous material thus obtained by means of a chlorine-free bleaching sequence which comprises at least one first bleaching step with a chlorine-free oxidant in the presence of a base.

    The chemical pulp prepared according to this process and paper or nonwoven made from such are characterized by a high degree of brightness (at least 83%, in particular more than 86%) and high strength.

    摘要翻译： 本发明涉及一种用于制备漂白亚硫酸盐化学纸浆，其包括：的木质纤维素材料的芯片脱木素在亚硫酸盐制浆过程超过所述材料的解纤点直到低于50卡伯值被达到，并且该纤维材料的漂白 通过包括在碱的存在下，游离氯氧化剂的至少一个第一漂白步骤无氯漂白顺序的方式将由此获得的。 的化学纸浆制备寻求通过高亮度度数（至少83％，特别是人数超过86％）和高强度的特点由雅丁这一进程，纸或无纺布。

    PROCESS FOR PRODUCTION OF CHEMICAL PULP FROM HERBACEOUS PLANTS
    10.
    发明公开
    PROCESS FOR PRODUCTION OF CHEMICAL PULP FROM HERBACEOUS PLANTS 审中-公开
    VERFAHREN ZUR ZELLSTOFFHERSTELLUNG AUS GRASARTIGEN PFLANZEN

    公开(公告)号：EP1056902A4

    公开(公告)日：2001-05-30

    申请号：EP99908224

    申请日：1999-02-18

    申请人： INT PAPER CO

    发明人： GALLAGHER HUGH P ,  HILL NELSON F ,  KOSTER CURTIS F ,  CASSIDY ROBERT F

    IPC分类号： D21C1/10 ,  D21C3/00 ,  D21C5/00 ,  D21C3/02 ,  D21C3/04 ,  D21C3/06

    CPC分类号： D21C5/00 ,  D21C1/10 ,  D21C3/00

    摘要： The specification discloses a process for production of chemical fibrous pulp for making paper, paperboard and other fibrous products from herbaceous plants, such as kenaf. Pulp from the herbaceous plant is made by a process which involves densification of pieces of all or part of the plants; i.e., both the core and the stalk or just the core portion, into cubes or pellets having a density ranging from about 15 to about 70 lbs/ft3, preferably from about 25 to about 50 lbs/ft3, which are then chemically digested to produce a fibrous pulp. The densified cubes or pellets may be digested alone or together with conventional wood chips. A principal advantage of the invention is that the densified cubes or pellets exhibit significantly better yield and strength after treatment by conventional chemical pulping methods as compared with the undensified material, enabling more efficient and economical use of this material to supplement limited supplies of conventional hardwood and softwood pulp sources.

    摘要翻译： 一种生产用于从草本植物（如洋麻）制造纸，纸板和其他纤维制品的化学纤维纸浆的方法。 来自草本植物的纸浆是通过一种方法制成的，该方法涉及致密化全部或部分植物的片段; 即核心部分或茎部或核心部分，成为立方体或丸粒，其密度范围为约15至约70磅/英3，优选约25至约50磅/平方英尺，然后将其化学消化以产生 纤维纸浆。 致密的立方体或颗粒可以单独消除或与常规木片一起消化。 本发明的主要优点是，与未增塑的材料相比，通过常规化学制浆方法处理后，致密化的立方体或丸粒显示出显着更好的产率和强度，使得该材料能够更有效和经济地使用以补充常规硬木的有限供应和 软木浆来源。