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    Two stage pulp bleaching reactor
    1.
    发明公开
    Two stage pulp bleaching reactor 失效
    Zweistufige Reaktor zum Bleichen von Zellstoff。

    公开(公告)号：EP0515303A1

    公开(公告)日：1992-11-25

    申请号：EP92610036.3

    申请日：1992-05-19

    申请人： UNION CAMP PATENT HOLDING, INC.

    发明人： Pikulin, Michael A. ,  Friend, William H.

    IPC分类号： D21C9/10 ,  D21C9/153

    CPC分类号： D21C9/153 ,  D21C9/1057

    摘要： A two stage ozone-pulp bleaching method and apparatus are disclosed. In the first stage, high consistency pulp particles are turbulently mixed and contacted with a gaseous mixture containing ozone to mix and contact substantially all of the pulp particles with ozone to react at least a portion of the pulp particles with the ozone. Pulp particles and gaseous bleaching mixture are then directed to a second stage including a quiescent pulp bed. Pulp particles may complete their reaction in the bed, which also serves to strip ozone which was not contacted with pulp particles in the first stage from the gaseous bleaching mixture.

    摘要翻译： 公开了两阶段臭氧纸浆漂白方法和装置。 在第一阶段，将高稠度纸浆颗粒湍流混合并与含有臭氧的气体混合物接触，以与臭氧混合并接触基本上所有的纸浆颗粒，以使至少一部分纸浆颗粒与臭氧反应。 然后将纸浆颗粒和气态漂白混合物引导到包括静止纸浆床的第二阶段。 纸浆颗粒可以在床中完成它们的反应，其也用于从气态漂白混合物中除去在第一阶段不与纸浆颗粒接触的臭氧。

    Process and apparatus for conditioning ozone gas recycle stream in ozone pulp bleaching
    3.
    发明公开
    Process and apparatus for conditioning ozone gas recycle stream in ozone pulp bleaching 失效
    用于通过臭氧的装置的制备在纸浆漂白臭氧再循环气流的方法和装置。

    公开(公告)号：EP0526383A1

    公开(公告)日：1993-02-03

    申请号：EP92610043.9

    申请日：1992-06-09

    申请人： UNION CAMP PATENT HOLDING, INC.

    发明人： Joseph, James C. ,  Pikulin, Michael A. ,  Friend, William H.

    IPC分类号： D21C9/153

    CPC分类号： D21C9/153 ,  B01D53/62 ,  C01B13/11 ,  C01B2201/60 ,  Y02C10/04 ,  Y02P20/152 ,  Y02P70/24

    摘要： A process for conditioning an ozone gas recycle stream in an ozone pulp bleaching process, wherein the level of carbon dioxide in the recycle stream is controlled to allow full capacity operation of the ozone generator. Carbon dioxide concentration is identified over the relevant operational ranges and maximum concentration is identified for full capacity/optimum efficiency operation. Specific methods are described for controlling carbon dioxide concentration including purging a portion of the recycle stream, counter-current scrubbing of the recycle stream with an alkaline solution and passing the recycle stream through an adsorbent material. Contaminants entering the system also may be reduced by directing the purged recycle stream, which is relatively oxygen rich, into the dewatering press where pulp consistency is increased. In this manner nitrogen surrounding the pulp is displaced by oxygen and thus, does not enter the bleaching/ozone system with the pulp.

    摘要翻译： 在臭氧漂白纸浆的过程中，worin二氧化碳的再循环料流中的电平被控制，以允许操作臭氧发生器满负荷为臭氧气体再循环流的调节的方法。 二氧化碳浓度被确定在相关的操作范围和最大浓度标识为全容量/最佳效率操作。 具体方法描述用于控制二氧化碳浓度包括碱性溶液与吹扫再循环流的再循环流，逆流洗涤的一部分和使所述再循环料流经过到吸附剂材料。 进入系统，以便污染物可通过引导吹扫再循环流，所有这些是相对富含氧气，进入脱水压榨机，其中的纸浆稠度增加被减小。 在包围纸浆这样的氮被氧，因此移动时，不与所述纸浆进入漂白/臭氧系统。