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    AN ACCEPT TANK MIXING ARRANGEMENT
    1.
    发明公开
    AN ACCEPT TANK MIXING ARRANGEMENT 审中-公开

    公开(公告)号：US20240229352A1

    公开(公告)日：2024-07-11

    申请号：US18563701

    申请日：2022-05-20

    申请人： ANDRITZ OY

    发明人： Kimmo VANHALA

    IPC分类号： D21B1/34 ,  B01F27/71 ,  B01F35/50 ,  B01F101/47 ,  D21D5/28

    CPC分类号： D21B1/342 ,  B01F27/71 ,  B01F35/50 ,  D21D5/28 ,  B01F2101/47 ,  B01F2215/0422 ,  B01F2215/0427 ,  B01F2215/0431

    摘要： An accept tank arrangement for mixing of pulped fiber suspension including sidewalls (3,4) including opposite arched ends (2) and an elongated section (1) between the arched ends (2). The accept tank has mixers (10) each located within one of the arched ends (2). The mixers (10) have axles (11) on which are mounted propellers (12). The mixers (10) are aligned horizontally and each axle points to a respective point on the elongated section (1) of the sidewall (3) which away from an end of the elongate section by at least 25% of the length of the elongated section (1). The propellers (12) are symmetrically positioned with respect to a center-point of the accept tank. Within the center of the elongated section is an elongated centerpiece (6) having rounded ends. The accept tank has a substantially flat bottom at least at the elongated section (1) of the accept tank.

    Device for admixing a processing agent into a pulp suspension
    2.
    发明授权
    Device for admixing a processing agent into a pulp suspension 失效
    用于将加工剂混合到纸浆悬浮液中的装置

    公开(公告)号：US5746890A

    公开(公告)日：1998-05-05

    申请号：US640783

    申请日：1996-05-22

    申请人： Kjell Forslund

    发明人： Kjell Forslund

    IPC分类号： B01F3/12 ,  B01F3/08 ,  B01F5/02 ,  B01F7/06 ,  B01F15/00 ,  D21B1/34 ,  D21D5/28 ,  B01F5/00

    CPC分类号： B01F15/00915 ,  D21B1/342 ,  D21D5/28

    摘要： Mixing devices for mixing a processing agent with a pulp suspension are disclosed including a mixing vessel, an agitator mounted on the surface of the mixing vessel to create a flow of the pulp suspension across the mixing vessel, a processing agent supply for supplying processing agent to the flow of pulp suspension, and a flow divider mounted on the inner surface of the mixing vessel opposite the agitator, in which the flow divider includes a substantially vertical front distribution edge and a pair of arcuate front surfaces extending from that edge to the inner surface of the mixing vessel on opposite sides thereof.

    摘要翻译： PCT No.PCT / SE94 / 01009 Sec。 371日期：1996年5月22日 102（e）日期1996年5月22日PCT 1994年10月27日PCT公布。 WO95 / 17243 PCT出版物 日期1996年6月29日公开了用于混合处理剂与纸浆悬浮液的混合装置，其包括混合容器，安装在混合容器表面上的搅拌器，以产生穿过混合容器的纸浆悬浮液的流动，处理剂供应 用于向纸浆悬浮液的流动供应处理剂，以及安装在与搅拌器相对的混合容器的内表面上的分流器，其中分流器包括基本上垂直的前分布边缘和从其延伸的一对弓形前表面 边缘到混合容器的相对侧的内表面。

    Method of removing latency from medium consistency pulps by pumping the pulp
    3.
    发明授权
    Method of removing latency from medium consistency pulps by pumping the pulp 失效
    通过泵送纸浆从中等稠度纸浆中去除潜伏期的方法

    公开(公告)号：US4596631A

    公开(公告)日：1986-06-24

    申请号：US608191

    申请日：1984-05-08

    申请人： J. Robert Prough ,  Louis O. Torregrossa ,  Ake Backlund

    发明人： J. Robert Prough ,  Louis O. Torregrossa ,  Ake Backlund

    IPC分类号： D21D5/00 ,  D21F1/00 ,  D21D5/18 ,  D21D5/28

    CPC分类号： D21F1/0018 ,  D21D5/00

    摘要： The latency of mechanical pulp is removed in a quick and simple manner. After refining of comminuted cellulosic material to produce mechanical pulp, the pulp is diluted (if necessary) to a consistency of between about 8-25%, and the pulp is then merely pumped to a further treatment stage. Pumping is effected utilizing a centrifugal pump which fluidizes the pulp, the fluidization imparting sufficient energy to the pulp to remove the latent properties. The pulp may be pumped to a storage stage prior to passage to a screening stage, and can be pumped in a direct (non-return) path from the pump to the screening stage. If desired or necessary, a portion of the pumped pulp can be recirculated and pumped again to ensure that sufficient energy is imparted thereto to effect latency removal.

    摘要翻译： 机械纸浆的潜伏期以快速简单的方式去除。 在粉碎的纤维素材料精制以产生机械纸浆后，将纸浆稀释（如果需要）至约8-25％的稠度，然后将纸浆泵送到另外的处理阶段。 使用离心泵来实现泵送，该离心泵使纸浆流化，流化赋予纸浆足够的能量以去除潜在性能。 纸浆可以在通过筛选阶段之前被泵送到储存阶段，并且可以在从泵到筛选阶段的直接（非返回）路径中泵送。 如果需要或需要，一部分泵送的纸浆可以再循环并再次泵送，以确保赋予足够的能量以实现等待时间的去除。

    Method and apparatus for treating pulp with oxygen in a multi-stage bleaching sequence
    4.
    发明授权
    Method and apparatus for treating pulp with oxygen in a multi-stage bleaching sequence 失效
    在多阶段漂白顺序中用氧处理纸浆的方法和设备

    公开(公告)号：US4298426A

    公开(公告)日：1981-11-03

    申请号：US48936

    申请日：1979-06-15

    申请人： Louis O. Torregrossa ,  Jozef M. Bentvelzen ,  Gerald D. Crosby ,  Michael D. Meredith ,  Henry Bepple

    发明人： Louis O. Torregrossa ,  Jozef M. Bentvelzen ,  Gerald D. Crosby ,  Michael D. Meredith ,  Henry Bepple

    IPC分类号： D21C9/10 ,  D21C9/12 ,  D21C9/14 ,  D21C9/16 ,  D21D5/28

    CPC分类号： D21C9/1068

    摘要： A wood pulp slurry is treated with oxygen in a mill with little change to the process or structure of the mill. No special pressure tanks are required. The consistency of the pulp need not be altered for the treatment step. It may be treated at the usual process consistency of the pulp; e.g., it may be treated at the usual consistency of the pulp leaving a washer or subsequent steam mixer without additional dewatering or additional dilution.The oxygen is added into a closed section of the system so that it cannot immediately vent to the atmosphere. Alkali should also be present when the oxygen is mixed with the slurry. The mixing should occur near to the point of oxygen addition.The mixing occurs in a relatively small mixer that intensively mixes the slurry and gas. The mixer has a mixing zone with a swept area of 10,000 to 1,000,000 square meters per metric ton of oven-dry pulp. A preferred range is 25,000 to 150,000 square meters per metric ton of oven-dry pulp and an optimum range of around 65,400 square meters per metric ton of oven-dry pulp.The pulp is treated several times during a sequence. Some sequences are O-X-O and O-O-X-O in which X may be chlorine, chlorine dioxide, a combination of chlorine and chlorine dioxide - mixture of chlorine and chlorine dioxide, C.sub.D, D.sub.c -, hypochlorite, peroxide and ozone. The sequence may be followed by a D stage.Other systems and specific mixer designs are also disclosed.

    摘要翻译： 在磨机中用氧气处理木浆浆料，对轧机的工艺或结构几乎没有变化。 不需要特殊的压力罐。 对于处理步骤，不需要改变纸浆的稠度。 可以按照纸浆的通常工艺一致性进行处理; 例如，可以以离开洗涤器或随后的蒸汽混合器的纸浆的通常稠度进行处理，而无需额外的脱水或额外的稀释。 将氧气加入系统的封闭部分，使其不能立即排放到大气中。 当氧气与浆料混合时，碱也应存在。 混合应发生在加氧附近。 混合发生在相当小的混合器中，其密集地混合浆料和气体。 混合器具有混合区，扫地面积为10,000至100万平方米，每公吨烘干纸浆。 每公吨烘干纸浆的优选范围是25,000至15万平方米，每公吨干燥纸浆的最佳范围约为65,400平方米。 在一个序列中纸浆被处理好几次。 一些序列是O-X-O和O-O-X-O，其中X可以是氯，二氧化氯，氯和二氧化氯的组合 - 氯和二氧化氯的混合物，CD，Dc-，次氯酸盐，过氧化物和臭氧。 该序列之后可以是D阶段。 还公开了其他系统和特定混合器设计。

    Method of treating suspension of fibers to form fibrous aggregates
    5.
    发明授权
    Method of treating suspension of fibers to form fibrous aggregates 失效
    处理纤维悬浮物形成纤维素聚集体的方法

    公开(公告)号：US3679542A

    公开(公告)日：1972-07-25

    申请号：US3679542D

    申请日：1970-04-01

    申请人： BREVETS GRANOFIBRE SEBREG SOC

    发明人： JACQUELIN GUY

    IPC分类号： D21B1/12 ,  D21D5/28

    CPC分类号： D21B1/12

    摘要： A SUSPENSION OF FIBERS IS TREATED TO FORM AGGREGATES BY SUBJECTING A SUSPENSION OF THE FIBERS IN A LIQUID TO ROTATIONAL AGITATION TO ESTABLISH A SPEED GRADIENT BETWEEN POINTS IN THE SUSPENSION CAUSING THE FORMATION OF EDDYS, WHICH RESULT IN THE FIBERS MOVING TOGETHER INTO GROUPS. THE

    GROUPED FIBERS CLING TO ONE ANDOTHER TO FORM AGGREGATES, THE CONCENTRATION BY WEIGHT OF THE FIBERS IN THE SUSPENSION AT THE BEGINING OF THE TREATMENT BEING RELATIVELY LOW.