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    VERFAHREN ZUR HERSTELLUNG EINER FASERSTOFFBAHN
    7.
    发明公开
    VERFAHREN ZUR HERSTELLUNG EINER FASERSTOFFBAHN 审中-公开

    公开(公告)号：EP3359733A1

    公开(公告)日：2018-08-15

    申请号：EP16766279.0

    申请日：2016-09-14

    申请人： Andritz AG

    发明人： ANZEL, Andreas ,  SCHERB, Thomas ,  MAUSSER, Wilhelm ,  GISSING, Klaus

    IPC分类号： D21F11/00 ,  D21F11/14

    CPC分类号： D21F1/76 ,  D21F5/18 ,  D21F11/006 ,  D21F11/145

    摘要： The invention relates to a method for producing a fibrous material web (9), particularly for producing a tissue or hygienic paper web, in which a fibrous material suspension is dewatered in a twin wire former (18) to obtain a fibrous material web (9), and said fibrous material web (9) is dried with the aid of a TAD dryer (19). After the twin wire former (18) and before the TAD dryer (19), a pre-dewatering device (20) is provided which comprises a hood (17) and a suction roller (16), a hot fluid flow passing through the fibrous material web (9) that is embedded between one covering (3, 4, 5) on each side. The covering (5) between the suction roller (16) and the fibrous material web (9) is a felt (5), and the covering (3, 4) between the fibrous material web (9) and the hood (17) is a screen (3, 4). In said pre-dewatering device (20), a specific volumetric fluid flow greater than 100 m
    3 / (m
    2. min), particularly greater than 200 m
    3 / (m
    2. min), and preferably greater than 250m
    3 / (m
    2. min) is sucked through the fibrous material web (9).

    VERFAHREN UND VORRICHTUNG ZUR ENTWÄSSERUNG VON SCHLAMM AUF EINEM SIEB
    10.
    发明公开
    VERFAHREN UND VORRICHTUNG ZUR ENTWÄSSERUNG VON SCHLAMM AUF EINEM SIEB 有权
    VERFAHREN UND VORRICHTUNG ZURENTWÄSSERUNGVON SCHLAMM AUF EINEM SIEB

    公开(公告)号：EP3134354A1

    公开(公告)日：2017-03-01

    申请号：EP15717843.5

    申请日：2015-04-13

    申请人： Andritz AG

    发明人： HOCHEGGER, Ursula ,  SPIELMANN, Christoph

    IPC分类号： C02F1/52

    CPC分类号： C02F1/5209 ,  C02F11/121 ,  C02F2303/24

    摘要： The invention relates to a method for the dewatering of sludge on a screen, wherein a flocculant is admixed with sludge, whereafter the sludge is at least partially dewatered, the flow behaviour of the sludge on the screen being optically detected and the amount of flocculant to be admixed being set according to the free screen surface in a control region. The invention is primarily characterized in that the control region is arranged at a point of the cleaned screen in the inlet area of the sludge, for example at the edge. The invention also relates to a device for the dewatering of sludge, comprising a flocculant feed device and a screen downstream of the flocculant feed device, wherein a device, in particular a camera, is provided for optically detecting the flow behaviour of the sludge and is connected via a control system to the flocculant feed device for regulating the amount of flocculant, said device being characterized in that the device (11), in particular the camera, is designed such that it detects a control region in the inlet area (10) of the cleaned screen. In this way, regulation can be achieved for an optimal feed amount of flocculant in a straightforward manner regardless of the material feed and the sludge type.

    摘要翻译： 本发明涉及一种用于在筛网上对污泥进行脱水的方法，其中将絮凝剂与污泥混合，此后污泥至少部分脱水，光学检测筛网污泥的流动行为和絮凝剂的量 根据控制区域中的自由屏幕表面进行混合。 本发明的主要特征在于，控制区域布置在例如在边缘处的污泥的入口区域中的清洁筛网的点处。 本发明还涉及一种用于污泥脱水的装置，包括絮凝剂进料装置和絮凝剂进料装置下游的筛网，其中提供了一种装置，特别是相机，用于光学检测污泥的流动行为，并且是 通过控制系统连接到絮凝剂进料装置以调节絮凝剂的量，所述装置的特征在于，装置（11），特别是相机被设计成使得其检测入口区域（10）中的控制区域， 的清洁屏幕。 以这种方式，可以以直接的方式实现最佳的絮凝剂进料量的调节，而不管材料进料和污泥类型如何。