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1. 发明授权

US06419786B1 Method for bleaching wood pulp containing recycled paper 失效
标题翻译：漂白含有再生纸的木浆的方法
公开(公告)号：US06419786B1
公开(公告)日：2002-07-16
申请号：US09230059
申请日：1999-04-12
申请人： Rolf Kurtz
发明人： Rolf Kurtz
IPC分类号： D21C502
CPC分类号： D21C9/10 , D21B1/32 , D21C5/02 , Y02W30/646 , Y02W30/648
摘要： A method of treating wood-fiber pump, particularly wood-fiber pulp that contains recycled paper, comprises delivering the pulp to and advancing the pulp in a heating zone while delivering steam to the heating zone. The pulp is finely-divided in a disperser and the finely-divided pulp delivered to a screw press without separate departure of steam, so as to compact the pulp in the end of the screw press and therewith form a plug seal. At the same time, one or more bleaching chemicals is or are supplied during one or more treatment stages, and the temperature of the pulp is regulated to obtain an optimal bleaching process or optimal bleaching processes. The temperature of the pulp can be raised or lowered by supplying steam or water thereto respectively. The invention also relates to a plant for carrying out the method.
摘要翻译：处理木纤维泵，特别是包含再生纸的木纤维纸浆的方法包括在将蒸汽输送到加热区域的同时将纸浆递送到加热区域中并将其推进。纸浆在分散器中细分，将细碎的纸浆输送到螺旋压榨机，而不会蒸汽分离出来，以便在螺旋压榨机的端部压实纸浆并形成塞子密封。同时，在一个或多个处理阶段期间或者提供一种或多种漂白化学品，调节纸浆的温度以获得最佳的漂白过程或最佳漂白过程。通过分别向其供应蒸汽或水，可以提高或降低纸浆的温度。本发明还涉及一种用于实施该方法的设备。

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