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    • 2. 发明申请
    • METHOD AND DEVICE FOR THE CONTINUOUS COOKING OF PULP
    • 用于连续烹饪纸浆的方法和装置
    • WO2007064293A1
    • 2007-06-07
    • PCT/SE2006/050507
    • 2006-11-24
    • KVAERNER PULPING ABSNEKKENES, VidarLINDSTRÖM, Mikael
    • SNEKKENES, VidarLINDSTRÖM, Mikael
    • D21C3/24D21C3/22D21C7/00
    • D21C7/12D21C3/22D21C3/24
    • The invention concerns an arrangement and a method for the continuous cooking of chemical cellulose pulp in a continuous digester system (100). The continuous digester system (100) comprises an inlet (102) for the feed of a chips suspension and an outlet (103) for the output of a cooked suspension of pulp. The suspension of chips is fed in to the inlet through a line (105) at the beginning of the cook, where the chips suspension has a volume of starting cooking fluid that establishes a fluid/wood ratio that is greater than 3.5. The invention is characterised in that a final cooking fluid is present during the cook for the major part of the cook and is withdrawn through a withdrawal strainer (106) only during the final 15 minutes of the cook. The final cooking fluid ensures a fluid/wood ratio that is greater than 3.5 in association with the withdrawal. The withdrawn final cooking fluid during the final 15 minutes of the cook consists of spent black liquor, which maintains a residual alkali level that lies under 15 g/l.
    • 本发明涉及在连续蒸煮器系统(100)中连续烹饪化学纤维素纸浆的装置和方法。 连续蒸煮器系统(100)包括用于进料碎屑悬浮液的入口(102)和用于输出熟化的纸浆悬浮液的出口(103)。 在烹饪开始时,芯片的悬浮液通过管线(105)进入入口,其中碎屑悬浮液具有确定大于3.5的流体/木材比率的起始烹调液体积。 本发明的特征在于,在厨师烹饪期间存在烹饪最后的烹饪液体,并且仅在烹饪的最后15分钟内通过抽吸过滤器(106)抽出。 最终的烹饪液体确保与抽出相关联的大于3.5的流体/木材比例。 在烹饪最后15分钟内抽出的最终烹饪液体由用过的黑液组成,残留的碱水平保持在15g / l以下。
    • 5. 发明申请
    • PROCESS FOR CONTINUOUSLY COOKING CHEMICAL CELLULOSE PULP
    • 连续烹饪化学纤维素浆的方法
    • WO2003060229A1
    • 2003-07-24
    • PCT/SE2002/002225
    • 2002-12-04
    • KVAERNER PULPING ABGUSTAVSSON, CatrinLINDSTRÖM, MikaelOLSSON, KristerSNEKKENES, Vidar
    • GUSTAVSSON, CatrinLINDSTRÖM, MikaelOLSSON, KristerSNEKKENES, Vidar
    • D21C3/24
    • D21C3/24D21C7/14
    • Process for continuously cooking chemical pulp in a digester system consisting of at least one vessel for impregnating and cooking comprising an inlet into which a mixture of chips and process liquid is fed. The chips are impregnated at a predetermined impregnation temperature T imp , and cooked at a predetermined cooking temperature T cook , after which dissolved pulp is fed out at the outlet of the digester system. Process liquid which is continually extracted is retained outside the digester system during a dwell time, t, of at least 30 min, without any heating above 140°, and thereafter returned to the digester system to a position which is substantially at the same level as the extraction, or downstream thereof, and thereby constitute part of the process liquid in the subsequent treatment zone. The process results in improved tear strength, beatability, bleachability and reduced colour reversion, and increased yield across the digester.
    • 在由至少一个用于浸渍和烹饪的容器组成的蒸煮器系统中连续烹饪化学纸浆的方法,包括一个入口,其中进料有碎屑和工艺液体的混合物。 将芯片以预定的浸渍温度Timp浸渍,并在预定的烹调温度Tcook下煮熟,之后将溶解的纸浆在蒸煮器系统的出口处送出。 持续提取的处理液体在停留时间t至少为30分钟的时间内保留在蒸煮器系统外,没有任何加热高于140°,然后返回到蒸煮器系统到基本上与 提取或其下游,从而构成后续处理区中的处理液的一部分。 该方法产生了改善的撕裂强度,打浆性,漂白性和减少的颜色反转,并提高了整个蒸煮器的产量。
    • 6. 发明申请
    • PRETREATMENT OF CHIPS WITH WHITE LIQUOR PRIOR TO A TREATMENT WITH BLACK LIQUOR
    • 用白色液体处理白色液体的预处理
    • WO2003057979A1
    • 2003-07-17
    • PCT/SE2002/002317
    • 2002-12-13
    • KVAERNER PULPING ABLINDSTRÖM, MikaelSNEKKENES, Vidar
    • LINDSTRÖM, MikaelSNEKKENES, Vidar
    • D21C3/22
    • D21C3/22D21C1/06
    • The invention concerns a method for the manufacture of cooked cellulose pulp in which the starting material, preferably chips, undergoes a successive increase in temperature towards cooking temperature while the chips are first treated in a pre-treatment zone in which the main part, greater than 50%, of fresh white liquor necessary for the cooking stage is added, after which this alkali-rich treatment fluid is withdrawn and replaced to a major extent by black liquor. The alkali-rich treatment fluid that has been withdrawn after the pre-treatment to stage is then added to the cooking stage, which is why the addition of fresh white liquor to the cooking stage is reduced to an equivalent amount. Maximal yield-enhancing effect is obtained using polysulphide-rich white liquor during the pre-treatment at a temperature in the interval 60 ± 40°C and retention time in the interval 2-60 minutes, preferably 2-10 minutes.
    • 本发明涉及一种制造煮熟的纤维素纸浆的方法,其中起始材料,优选碎片在烹饪温度下经历连续升高的温度,同时首先在预处理区域处理切屑,其中主要部分大于 添加50%的烹饪阶段所需的新鲜白液,然后将该富碱处理液抽出并在很大程度上用黑液代替。 然后在预处理阶段之后取出的富碱处理液加入烹调阶段,这就是为了将新鲜的白液添加到烹饪阶段的原因被减少到等量。 在预处理期间,在60±40℃的间隔和2-60分钟,优选2-10分钟的保留时间内,使用多硫化物白液获得最大的产率增强效果。
    • 7. 发明申请
    • CONTINUOUS DIGESTER FOR CELLULOSE PULP INCLUDING METHOD AND RECIRCULATION SYSTEM FOR SUCH DIGESTER
    • 包含用于此类细菌的方法和再循环系统的纤维素浆的连续消毒剂
    • WO2002075044A1
    • 2002-09-26
    • PCT/SE2002/000516
    • 2002-03-19
    • KVAERNER PULPING ABSNEKKENES, VidarLINDSTRÖM, Mikael
    • SNEKKENES, VidarLINDSTRÖM, Mikael
    • D21C3/24
    • D21C7/14D21C3/24
    • The invention relates to a continuous digester for producing chemical pulp, to a process for operating this digester and to a feedback system for the cooking liquid. By means of implementing cooking zones 1st, 2nd, 3rd, 4th and 5th down through the digester, having a successively decreasing liquid-to-wood ratio, it is possible to obtain a more uniform alkali profile during the cooking. The alkali which is totally available is kept high at the beginning by means of a high liquid-to-wood ratio, typically well over 6:1, which well exceeds conventional liquid-to-wood ratios, which are normally around 3.5-5.0:1. In combination with digester liquid from subsequent cooking zones being fed back to the top of the digester, the alkali concentration can be kept low at the beginning of the cooking, typically within 20-35 g/l when cooking softwood. This is achieved with essentially all the alkali, i.e. more than 80 %, being added at the beginning of the cooking. A more uniform alkali profile is favourable for the cooking process and gives an improved pulp quality.
    • 本发明涉及一种用于生产化学纸浆的连续消化器,一种用于操作该蒸煮器的方法和一种用于烹饪液体的反馈系统。 通过蒸煮器第1,第2,第3,第4,第5和第5的烹饪区域,通过蒸煮器连续降低液体与木材的比例,可以在烹调过程中获得更均匀的碱性。 完全可用的碱通过高达6:1的高液 - 木比率开始保持高,这远远超过常规的液 - 木比,其通常为约3.5-5.0: 1。 结合来自后续烹饪区域的蒸煮器液体被反馈到蒸煮器的顶部,在烹饪开始时,碱浓度可以保持较低,当烹饪软木时通常为20-35g / l。 这是在烹饪开始时基本上全部添加碱(即大于80%)来实现的。 更均匀的碱型材有利于烹饪过程并且提供改善的纸浆质量。
    • 9. 发明申请
    • PROCESS FOR THE HYDROLYSIS OF CELLULOSE
    • 水解纤维素的方法
    • WO2010124944A1
    • 2010-11-04
    • PCT/EP2010/055030
    • 2010-04-16
    • HELI INOVATIO HANDELSBOLAGHENRIKSSON, GunnarLINDSTRÖM, Mikael
    • HENRIKSSON, GunnarLINDSTRÖM, Mikael
    • C13K1/02C12P7/06C12P7/10
    • C13K1/02C12P7/10C12P19/02Y02E50/16Y02E50/17
    • There is disclosed a process for the hydrolysis of cellulose comprising the sequential steps (a) mixing cellulose with a viscosity below 900 ml/g with an aqueous solution to obtain a liquid, wherein particles comprising cellulose in said liquid have a diameter of maximum 200 nm, wherein the temperature of the aqueous solution is below 35°C, and wherein the pH of the aqueous solution is above 12, (b) subjecting the liquid to at least one of the steps: (i) decreasing the pH of the liquid with at least 1 pH unit and (ii) increasing the temperature by at least 20°C, and (c) hydrolyzing the cellulose. Moreover there is disclosed glucose manufactured according to the method and ethanol manufactured from the glucose. Advantages include that the cellulose is hydrolyzed faster and to a greater extent after the treatment. The yield is increased.
    • 公开了一种水解纤维素的方法,其包括以下顺序步骤:(a)用水溶液混合粘度低于900ml / g的纤维素以获得液体,其中在所述液体中包含纤维素的颗粒的直径最大为200nm ,其中所述水溶液的温度低于35℃,并且其中所述水溶液的pH高于12,(b)使所述液体经历以下步骤中的至少一个:(i)降低所述液体的pH, 至少1个pH单位,和(ii)将温度升高至少20℃,和(c)水解纤维素。 此外,公开了根据该方法制备的葡萄糖和由葡萄糖制造的乙醇。 优点包括纤维素在处理之后更快地水解并且更大程度地水解。 产量增加。