公开(公告)号：SE0500446L

公开(公告)日：2005-11-29

申请号：SE0500446

申请日：2005-02-28

Applicant: STFI PACKFORSK AB

Inventor： NORMAN BO ,  SOEDERBERG DANIEL ,  HERMANSSON LENNART

IPC: D21F1/02 ,  D21F9/00

公开(公告)号：DE302075T1

公开(公告)日：1989-05-11

申请号：DE87902828

申请日：1987-04-15

Applicant: STFI, STOCKHOLM, SE

Inventor： ENGSTRAND, OSSIAN, PER, S-183 41 TAEBY, SE ,  HTUN, THOUNG, MYAT, S-162 24 VAELLINGBY, SE ,  HAMMAR, LARS-AKE, S-123 44 FARSTA, SE ,  PETTERSSON, LENNART, RUNE, S-112 47 STOCKHOLM, SE

IPC: D21B20060101 ,  D21B1/16

公开(公告)号：WO2007131794A2

公开(公告)日：2007-11-22

申请号：PCT/EP2007/004392

申请日：2007-05-16

Applicant: BAM ,  STFI e.V. ,  HABEL Wolfgang ,  KREBBER, Katerina ,  THIELE, Elke ,  ARNOLD, Rolf ,  GLÖTZL, Rainer

Inventor： HABEL Wolfgang ,  KREBBER, Katerina ,  THIELE, Elke ,  ARNOLD, Rolf ,  GLÖTZL, Rainer

CPC classification number: E02B3/122 ,  D04B21/16 ,  D10B2403/02431 ,  D10B2505/204 ,  E02B3/10 ,  G01D5/35364 ,  G01M11/086

Abstract: A reinforcement element, comprises at least one sensor fiber adapted for strain measurements based on stimulated Brillouin scattering within said sensor fiber. Furthermore, a system for monitoring strain within a structure comprises a reinforcement element comprising at least one sensor fiber adapted for strain measurements based on stimulated Brillouin scattering within said sensor fiber, a pump laser for coupling in laser radiation of a pump frequency into said at least one sensor fiber, a Stokes laser for coupling in laser radiation of a Stokes laser radiation into said at least one sensor fiber, wherein the pump frequency and the Stokes frequency are different from one another and wherein the frequency difference between the pump and Stokes frequencies is within the range of acoustical phonons within said sensor fiber, a sensor adapted to obtain a stimulated Brillouin backscattering signal, and a network analyzer adapted for determining the complex transfer function of the sensor fiber to determine a spatially resolved strain measurement.

Abstract translation: 增强元件包括至少一个适于基于所述传感器光纤内受激布里渊散射的应变测量的传感器光纤。 此外，用于监测结构内的应变的系统包括加强元件，该加强元件包括适于基于所述传感器光纤内的受激布里渊散射的应变测量的至少一个传感器光纤，用于将泵浦频率的激光辐射耦合到所述至少一个 一个传感器光纤，斯托克斯激光器，用于将斯托克斯激光辐射的激光辐射耦合到所述至少一个传感器光纤中，其中泵浦频率和斯托克斯频率彼此不同，并且其中泵和斯托克斯频率之间的频率差为 在所述传感器光纤内的声学声子的范围内，适于获得受激布里渊后向散射信号的传感器和适用于确定传感器光纤的复数传递函数以确定空间分辨应变测量的网络分析仪。

公开(公告)号：WO2006031175A1

公开(公告)日：2006-03-23

申请号：PCT/SE2005/001301

申请日：2005-09-08

Applicant: STFI-PACKFORSK AB ,  ÖHMAN, Fredrik ,  THELIANDER, Hans ,  TOMANI, Per ,  AXEGARD, Peter

Inventor： ÖHMAN, Fredrik ,  THELIANDER, Hans ,  TOMANI, Per ,  AXEGARD, Peter

IPC: D21C11/00

CPC classification number: D21C11/0007 ,  Y02P40/44

Abstract: The present invention provides a method for separation of lignin from black liquor comprising the following steps: a) Precipitation of lignin by acidifying black liquor and thereupon dewatering, b) suspending the lignin filter cake obtained in step a) whereupon a second lignin suspension is obtained and adjusting the pH level to approximately the pH level of the washing water of step d) below, c) dewatering of the second lignin suspension, d) addition of washing water and performing a displacement washing at more or less constant conditions without any dramatic gradients in the pH, and e) dewatering of the lignin cake produced in step d) into a high dryness and displacement of the remaining washing liquid in said filter cake, whereby a lignin product is obtained which has an even higher dryness after the displacement washing of step e). The present invention also provides a lignin product or an intermediate lignin product obtainable by the above method. The present invention also provides use, preferably for the production of heat or chemicals, of said lignin product or said intermediate lignin product.

Abstract translation: 本发明提供了一种从黑液中分离木质素的方法，包括以下步骤：a）通过酸化黑液并随后脱水来沉淀木质素，b）悬浮步骤a）中获得的木质素滤饼，由此获得第二木质素悬浮液 并且将pH水平调节到下面步骤d）的洗涤水的大约pH值水平，c）第二木质素悬浮液的脱水，d）加入洗涤水并在或多或少的恒定条件下进行置换洗涤，而没有任何显着的梯度 在pH值中，e）将步骤d）中产生的木质素滤饼脱水到所述滤饼中的高干燥度和剩余洗涤液体的位移，由此得到木质素产物，其在置换洗涤后具有更高的干燥度 步骤e）。 本发明还提供可通过上述方法获得的木质素产品或中间木质素产品。 本发明还提供了用于生产所述木质素产物或所述中间体木质素产物的热或化学物质的用途。

公开(公告)号：WO2005080678A1

公开(公告)日：2005-09-01

申请号：PCT/SE2005/000136

申请日：2005-02-03

Applicant: STFI, SKOGSINDUSTRINS TEKNISHA FORSKNINGSINSTITUT AB ,  LINDSTRÖM, Tom

Inventor： LINDSTRÖM, Tom

IPC: D21H11/20

CPC classification number: D21C9/005 ,  D21H11/20 ,  D21H17/26 ,  D21H21/20

Abstract: The present invention provides a method for the modification of lignocellulosic materials. Cellulose fibres are treated with an aqueous electrolyte-containing solution of an amphoteric cellulose derivative for at least 5 minutes at a temperature of at least 50 °C. The pH during the treatment is approximately 1.5-4.5 or higher than 11; or the concentration of the electrolyte is approximately 0.0001-0.05 M if the electrolyte has monovalent cations, or approximately 0.0002-0.1 M if the electrolyte has divalent cations. Further the invention relates to products obtainable by the above mentioned method and uses of said products for manufacturing paper with a high wet strength and rayon fibres.

Abstract translation: 本发明提供了一种木质纤维素材料的改性方法。 纤维素纤维在至少50℃的温度下用两性纤维素衍生物的含电解质水溶液处理至少5分钟。 治疗期间的pH约为1.5-4.5或高于11; 如果电解质具有一价阳离子，则电解质的浓度约为0.0001-0.05M，如果电解质具有二价阳离子，则电解质的浓度约为0.0002-0.1M。 此外，本发明涉及通过上述方法获得的产品和用于制造具有高湿强度的人造丝纤维的所述产品的用途。

公开(公告)号：WO2003046276A1

公开(公告)日：2003-06-05

申请号：PCT/SE2002/002137

申请日：2002-11-22

Applicant: STFI, SKOGSINDUSTRINS TEKNISKA FORSKNINGSINSTITUT AB ,  BRELID, Harald ,  AXEGÅRD, Peter

Inventor： BRELID, Harald ,  AXEGÅRD, Peter

IPC: D21C1/04

CPC classification number: D21C1/04 ,  D21C1/10

Abstract: In a process of treating wood chips for reduction of the concentration of undesirable inorganic elements prior to cooking in a production line for chemical pulp, the wood chips, having entrapped air, are treated with an aqueous leaching liquor at elevated temperature and pressure, followed by draining at atmospheric pressure or below atmospheric pressure, the pressures being controlled to yield a moisture content in the wood chips as low as possible for adequate leaching result and behavior of the chips in a subsequent digester. The aqueous leaching liquor is e.g. pulp mill process water with a low content of undesirable inorganic components, such as bleach plant spent liquor or condensate. The aqueous leaching liquor drained from the treated wood chips may be purified and recycled back to the process.

Abstract translation: 在用于化学纸浆的生产线中烹饪之前处理木片以减少不需要的无机元素的浓度的过程中，具有截留空气的木屑在升高的温度和压力下用含水浸出液处理，接着是 在大气压力或低于大气压力下排放，控制压力以在木屑中产生尽可能低的水分含量，以使碎屑在随后的蒸煮器中的充分浸出结果和行为。 含水浸出液是例如水。 具有低含量不需要的无机组分的纸浆加工水，例如漂白设备废液或冷凝物。 从经处理的木片排出的含水浸出液可以被纯化并再循环回该方法。

公开(公告)号：WO1998007922A1

公开(公告)日：1998-02-26

申请号：PCT/SE1997001365

申请日：1997-08-20

Applicant: STFI ,  NILVEBRANT, Nils-Olov ,  REIMANN, Anders ,  DE SOUSA, Filipe

Inventor： STFI

IPC: D21C09/10

CPC classification number: D21C9/008 ,  D21C5/005

Abstract: One or several oxalic acid or oxalate decomposing enzymes are used to lower the concentration of oxalic acid and/or oxalate precipitates in the production of pulp and paper. The method is particularly useful in processes using oxidative bleaching and in particular in processes where the process liquids are recirculated within the plant. Thus the forming of incrusts and sediments, comprising sparingly soluble oxalate compounds, is reduced or prevented.

Abstract translation: 一种或多种草酸或草酸盐分解酶用于降低纸浆和纸浆生产中草酸和/或草酸盐沉淀物的浓度。 该方法在使用氧化漂白的方法中特别有用，特别是在工艺液体在工厂内再循环的方法中。 因此，减少或防止包含微溶草酸盐化合物的结垢和沉积物的形成。

公开(公告)号：WO1997017177A1

公开(公告)日：1997-05-15

申请号：PCT/SE1996001398

申请日：1996-10-31

Applicant: STFI ,  UHMEIER, Andreas

Inventor： STFI

IPC: B27L11/00

CPC classification number: B27L11/02 ,  B27L11/00

Abstract: Process for the manufacturing of wood chips as raw material in the production of mechanical pulp in order to reduce the energy consumption in the production of pulp, characterized in that the wood fibres, including the summerwood fibres, are irreversibly deformed across the grain, i.e. in a direction perpendicular to the longitudinal axis of the fibres. Preferably this is done through mechanical treatment with one or several tools, arranged so that the forces created in the treatment act in a direction substantially perpendicular to the longitudinal axis of the fibres.

Abstract translation: 制造木屑作为生产机械纸浆原料的方法，以减少纸浆生产中的能源消耗，其特征在于包括夏木纤维在内的木纤维在整个谷物上不可逆地变形，即在 垂直于纤维纵轴的方向。 优选地，这是通过用一个或多个工具进行机械处理而完成的，其布置成使得在处理中产生的力在基本上垂直于纤维的纵向轴线的方向上作用。

公开(公告)号：WO1992005423A1

公开(公告)日：1992-04-02

申请号：PCT/SE1991000642

申请日：1991-09-25

Applicant: STFI ,  FRANSSON, Per-Ivar ,  KARLSSON, Håkan ,  KASTRE, Lehard

Inventor： STFI

IPC: G01N15/02

CPC classification number: G01N15/1475 ,  G01N1/38 ,  G01N11/00 ,  G01N15/147 ,  G01N33/343 ,  G01N2015/0057

Abstract: A method for measuring the flexibility of fibres, particularly cellulose fibres, in a flowing suspension. The fibre form of a large number of fibres is registered at two different pictures of suspension flow. A predefined fibre form is calculated for each flow picture, and a relationship, for example the quotient between two measurements of mean fibre form is determined and utilized to define fibre flexibility. The invention also relates to an arrangement for carrying out the inventive method, wherein the arrangement includes a flowthrough container (20) through which the suspension flows, a transparent window (26) mounted in the container wall, a CCD-type camera (30) which functions to photograph fibres passing the window, a picture analysis unit (34) coupled to the camera (30), and a data processing unit (36) for processing information obtained from the picture analysis unit (34).

Abstract translation: 用于测量流动悬浮液中纤维，特别是纤维素纤维的柔韧性的方法。 大量纤维的纤维形式记录在悬浮液流动的两个不同图片上。 为每个流动图像计算预定义的纤维形式，并且确定关系，例如平均纤维形式的两次测量之间的商，并用于定义纤维柔性。 本发明还涉及一种用于实施本发明的方法的装置，其中，该装置包括悬挂液流过的流过容器（20），安装在容器壁上的透明窗（26），CCD型照相机（30） 用于拍摄通过窗口的光纤，耦合到相机（30）的图像分析单元（34），以及用于处理从图像分析单元（34）获得的信息的数据处理单元（36）。

公开(公告)号：CA2641607C

公开(公告)日：2013-03-26

申请号：CA2641607

申请日：2007-01-31

Applicant: STFI PACKFORSK AB

Inventor： LINDSTROM TOM ,  ANKERFORS MIKAEL ,  HENRIKSSON GUNNAR

IPC: D21C9/00 ,  D21H11/20

Abstract: The present invention provides a method for treatment of chemical pulp for the manufacturing of microfibrillated cellulose comprising the following steps: a) providing a hemicellulose containing pulp, b) refining said pulp in at least one step and treating said pulp with one or more wood degrading enzymes at a relatively low enzyme dosage, and c) homogenizing said pulp thus providing s aid microfibrillated cellulose. According to a second aspect of the invention a microfibrillated cellulose obtainable by the method according to the first aspect is provided . According to a third aspect of the invention, use of said microfibrillated cellulose according to the second aspect in food products, paper products, composite materials, coatings or in rheology modifiers (e.g. drilling muds) is provided .