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414 条记录 (耗时 0.023 秒)

    Method for separating lignin from ligno-cellulosic material
    2.
    发明授权
    Method for separating lignin from ligno-cellulosic material 有权

    公开(公告)号：US11306434B2

    公开(公告)日：2022-04-19

    申请号：US17407663

    申请日：2021-08-20

    申请人： King Abdulaziz University

    发明人： Sherif Shawki Zaki Hindi

    IPC分类号： D21C9/16 ,  D21C5/02 ,  D21C7/00

    摘要： The present invention involves an environmentally friendly process and apparatus for the delignification of lignin-containing materials, such as cardboard newspaper or agricultural or tree pruning wastes. This process produces cellulose using low temperatures and low concentrations of hydrogen peroxide. It can be performed using a column fitted with a semipermeable gasket that pressurizes the column by retaining oxygen released by action of the hydrogen peroxide on a lignin-containing material.

    Paper Processing Device
    4.
    发明申请
    Paper Processing Device 审中-公开

    公开(公告)号：US20190136449A1

    公开(公告)日：2019-05-09

    申请号：US16236355

    申请日：2018-12-29

    申请人： Yingtao Tong

    发明人： Yingtao Tong

    IPC分类号： D21C7/00

    摘要： This invention discloses a paper processing device, comprising a bottom block, a connecting cavity fixedly arranged in the bottom block, a penetrating cavity communicated with and arranged in the lower end wall of the connecting cavity. The penetrating cavity is communicated with the exterior space. A lifting motor is fixedly arranged in the lower end wall of the connecting cavity, the upper end wall of output shaft of which is fixedly provided with a driving pulley. A driven pulley in the connecting cavity is arranged on one side of the driving pulley. The lifting motor works to drive the driving pulley to rotate to drive the driven pulley to rotate, so an inner threaded block is driven to rotate to drive a threaded rod to move upwards; then a stirring fan is driven to enter a reaction cavity. The automatic structure adopted by this device realizes automation of paper processing.

    SYSTEMS AND METHODS TO PRODUCE TREATED CELLULOSE FILAMENTS AND THERMOPLASTIC COMPOSITE MATERIALS COMPRISING TREATED CELLULOSE FILAMENTS
    5.
    发明申请
    SYSTEMS AND METHODS TO PRODUCE TREATED CELLULOSE FILAMENTS AND THERMOPLASTIC COMPOSITE MATERIALS COMPRISING TREATED CELLULOSE FILAMENTS 审中-公开

    公开(公告)号：US20190031839A1

    公开(公告)日：2019-01-31

    申请号：US15658935

    申请日：2017-07-25

    申请人： ABDOU KHADRI DIALLO ,  CLAIRE JAHIER ,  DANIEL MONTPLAISIR

    发明人： ABDOU KHADRI DIALLO ,  CLAIRE JAHIER ,  DANIEL MONTPLAISIR

    IPC分类号： C08J5/04 ,  D21C5/00 ,  D21C7/00 ,  D21C7/08 ,  C08J3/00

    摘要： A method and system to produce treated Cellulose Filaments (CF) and CF products are provided. Feedstock comprising CF in a water solution are mixed with a debonder to produce a mixed stream. The mixed stream is filtered yielding separate filtered and filtrate streams. The filtrate stream comprises at least a portion of the debonder. The filtered stream is dried to produce treated CF. The debonder is one of an alcohol, glycol ether, ester-containing quaternary ammonium salt, amido amine quaternary ammonium salt, disubstituted amide or a mixture thereof. The filtrate stream may be recycled. The mixed stream may be washed before filtering to remove debonder. A thermoplastic polymer-treated Cellulose filament composite material is formable by associating the treated CF with a thermopolymer such as polyolefin, polyurethane (PU), polypropylene (PP), polyester (PE), polylactic acid (PLA), polyhydroxyalcanoates (PHA), polyamide (PA), and ethylene vinyl acetate (EVA) or a mixture.

    Method and system for efficient production of dissolving pulp in a kraft mill producing paper grade pulp with a continuous type digester
    8.
    发明授权
    Method and system for efficient production of dissolving pulp in a kraft mill producing paper grade pulp with a continuous type digester 有权
    在连续式蒸煮器中生产纸浆纸浆的牛皮纸浆中有效生产溶解纸浆的方法和系统

    公开(公告)号：US09574302B2

    公开(公告)日：2017-02-21

    申请号：US14609385

    申请日：2015-01-29

    申请人： Pec-Tech Engineering and Construction Pte Ltd

    发明人： Richard Constantine van Lee ,  Alagaratnam Joseph Devanesan

    IPC分类号： D21C7/00 ,  D21C7/06 ,  D21C3/02 ,  D21C3/26

    CPC分类号： D21C7/06 ,  D21C3/02 ,  D21C3/26 ,  D21C7/00

    摘要： A method and system for pulp manufacturing used in connection with a kraft process includes a vertical pressure vessel operated in batch mode, a single-vessel or multi-vessel continuous digester, and other equipment for further processing brown stock, such as for washing, oxygen delignification, bleaching, and drying. A feeder and conveyance system may include a high pressure feeder or direct pump system, and selectively provides fiber-containing material to the continuous digester when making lower grade pulp product and to the vertical pressure vessel when making higher grade pulp such as dissolving pulp. The vertical pressure vessel is used for pre-hydrolysis and neutralization, after which the resulting pulp is fed to the continuous digester for cooking. White liquor and black liquor from the same mill may be used for the neutralization fluids. The same continuous digester is selectively used for cooking in connection with making pulp products of different grades or quality.

    摘要翻译： 用于与牛皮纸工艺相关的纸浆生产的方法和系统包括以分批模式操作的垂直压力容器，单容器或多容器连续蒸煮器以及用于进一步处理棕色原料的其它设备，例如用于洗涤，氧气 脱木质素，漂白和干燥。 进料器和输送系统可以包括高压给料器或直接泵系统，并且当制造较低级纸浆产品时，选择性地向连续蒸煮器提供含纤维材料，并且当制造较高级纸浆如溶解纸浆时，选择性地向垂直压力容器提供。 垂直压力容器用于预水解和中和，然后将所得纸浆进料到连续蒸煮器进行烹饪。 来自同一台磨机的白液和黑液可用于中和液。 与制造不同等级或质量的纸浆产品相关的连续蒸煮器被选择性地用于烹饪。

    Digester shell extension
    9.
    发明授权
    Digester shell extension 有权
    Digester外壳扩展

    公开(公告)号：US09328458B2

    公开(公告)日：2016-05-03

    申请号：US14717707

    申请日：2015-05-20

    申请人： Valmet AB

    发明人： Jonas Saetheråsen

    IPC分类号： D21C7/00 ,  D21C3/24 ,  D21C7/08

    CPC分类号： D21C7/00 ,  D21C3/24 ,  D21C7/08

    摘要： The invention relates to an improved design of the bottom of a continuous digester reducing the torque load on conventional bottom scrapers with scraper arms arranged at an angle α in relation to the horizontal plane in the range between 5°-30°. A simple digester shell extension VE is installed below the lowermost wash screen WS, ending at a small distance D above the end of the outer end of the scraper arm. The shell extension prevents the descending pulp column from expanding below the wash screen and enables easier shaving action from the scraper, using a dilution and expansion volume established at the outer ends of the scraper arms.

    摘要翻译： 本发明涉及连续蒸煮器的底部的改进设计，其减小了常规底部刮刀上的扭矩负载，刮刀臂相对于水平面以α°°在5°-30°之间的范围内布置。 简单的蒸煮器外壳延伸件VE安装在最下面的洗涤屏WS的下方，在刮刀臂的外端的末端上方的距离D处结束。 外壳延伸部防止下降的纸浆柱在洗涤屏幕下方扩展，并且使用在刮刀臂的外端建立的稀释和膨胀体积使得刮刀更容易剃刮。

    METHODS FOR THE OXYGEN-BASED DELIGNIFICATION OF PULP
    10.
    发明申请
    METHODS FOR THE OXYGEN-BASED DELIGNIFICATION OF PULP 审中-公开
    基于氧气的PULP定标方法

    公开(公告)号：US20160002858A1

    公开(公告)日：2016-01-07

    申请号：US14789359

    申请日：2015-07-01

    申请人： Linde Aktiengesellschaft

    发明人： Naresh J. Suchak

    IPC分类号： D21H21/32 ,  D21H17/67 ,  D21C7/00 ,  D21C11/00

    CPC分类号： D21H21/32 ,  D21C7/00 ,  D21C9/02 ,  D21C9/10 ,  D21C9/147 ,  D21C11/0007 ,  D21H17/675

    摘要： Pulp is delignified by forming a mixture of pulp and caustic, adding oxygen and feeding this oxygen-containing mixture to a first step reactor. The lignin in the oxygen-containing mixture will be partially delignified and will be fed to a second step reactor where the remainder of the lignin in the pulp will be delignified. In this manner, fast reacting lignin can be treated in the first step reactor and slow reacting lignin can be treated in the second reactor. The delignified pulp is recovered from the apparatus and after washing can be forwarded to a bleaching unit.

    摘要翻译： 通过形成纸浆和苛性碱的混合物，加入氧气并将该含氧混合物进料到第一步骤反应器来将纸浆脱木质素。 含氧混合物中的木质素将被部分脱木质素，并且将进料到第二步骤反应器中，其中纸浆中剩余的木质素将脱木质素。 以这种方式，可以在第一步骤反应器中处理快速反应的木质素，并且可以在第二反应器中处理缓慢反应的木质素。 从设备中回收脱木素的纸浆，并且在洗涤之后可以将其送至漂白单元。