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    • 3. 发明公开
    • 기계 펄프 제조 방법 및 장치
    • 机械粉末制备中的方法和装置
    • KR1020050075434A
    • 2005-07-20
    • KR1020057008924
    • 2003-11-19
    • 메트소 페이퍼, 인코포레이티드
    • 누르미넨,파시수테라,티모코스키넨,킴모
    • D21C11/00D21C9/10D21B1/16
    • D21C11/005D21C11/0028D21C11/122
    • The object of the present invention is a method and arrangement in making of mechanical pulp to reduce the amount of organic dissolved and colloidal substances in the pulp making process water by treating a part of the process water. According to the method the treating is carried out by leading the process water filtrate, separated from the pulp by a press (5) located before bleaching, to pre- treatment (8), where elongated fibres are fractionated from the process water to be treated. The filtrate that has passed the pre-treatment (8) is led to membrane filtration (9), where at least part of the organic dissolved and colloidal substances included in the process water are separated from the rest of the process water. The membrane filtration concentrate i.e. the colloidal and dissolved substances separated from the process water, is led to further treatment and the permeated i.e. the process water that has passed the membrane filtration is led back to the pulp making process. An arrangement according to the present invention comprises means to carry out the method according to the invention.
    • 本发明的目的是通过处理一部分工艺水来制造机械纸浆以减少制浆工艺水中的有机溶解和胶体物质的量的方法和装置。 根据该方法,通过引导通过位于漂白之前的压榨机(5)从纸浆分离的工艺水滤液进行处理(8),其中将长纤维从待处理的水中分馏出来 。 通过预处理(8)的滤液被导入膜过滤(9),其中包含在工艺水中的至少一部分有机溶解和胶体物质与其余工艺水分离。 将膜过滤浓缩物即从工艺用水中分离的胶态物质和溶解物质进一步处理,渗透过的膜,即通过膜过滤的工艺用水被引回制浆过程。 根据本发明的装置包括执行根据本发明的方法的装置。