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    A METHOD OF PRODUCING A CERAMIC FILTER MEMBRANE, A METHOD OF IMPROVING A CERAMIC FILTER MEMBRANE AND THE CERAMIC FILTER MEMBRANE OBTAINED BY THE METHOD
    1.
    发明申请
    A METHOD OF PRODUCING A CERAMIC FILTER MEMBRANE, A METHOD OF IMPROVING A CERAMIC FILTER MEMBRANE AND THE CERAMIC FILTER MEMBRANE OBTAINED BY THE METHOD 审中-公开
    一种陶瓷过滤膜的制造方法，改进陶瓷过滤膜的方法和由该方法获得的陶瓷过滤膜

    公开(公告)号：WO2015018420A1

    公开(公告)日：2015-02-12

    申请号：PCT/DK2014/050234

    申请日：2014-08-04

    申请人： LIQTECH INTERNATIONAL A/S

    发明人： MARCHER, Johnny

    IPC分类号： B01D67/00 ,  B01D69/10 ,  B01D71/02

    CPC分类号： B01D71/024 ,  B01D67/0046

    摘要： Methods of producing a ceramic filter membrane and of repairing a ceramic filter membrane and the so obtained membrane. The method for producing a membrane includes a first step of applying a first dispersion comprising ceramic particles of a first medium grain size and ceramic particles of a second medium grain size to a porous substrate, the second medium grain size being smaller than the first medium grain size, drying and sintering the ceramic particles. The so obtained membrane layer is surface treated with a second dispersion comprising ceramic particles of a third medium grain size in the interval -10-+ 10% relative to the first medium grain size and ceramic particles of a fourth medium grain size smaller than the third medium grain size. The surface treatment of the membrane layer occurs by passing the second dispersion in a main flow direction along the membrane surface layer in a turbulent flow while providing a pressure difference over the membrane layer, drying and sintering the so treated membrane. The method for repairing a ceramic filter membrane comprises the step of surface treating the membrane with a dispersion comprising ceramic particles of a first medium grain size and ceramic particles of a second medium grain size smaller than the first medium grain size, where the first medium grain size is larger than the average pore size of the membrane to be treated and smaller than the maximum pore size of the same membrane. The surface treatment of the membrane occurs by passing the dispersion in a main flow direction along the membrane surface in a turbulent flow while providing a pressure difference over the membrane, drying and sintering the so treated membrane.

    摘要翻译： 制造陶瓷过滤膜的方法和修复陶瓷过滤膜以及如此得到的膜。 制造膜的方法包括：第一步骤，将包含第一中等粒度的陶瓷颗粒和第二中等粒度的陶瓷颗粒的第一分散体施加到多孔基材上，所述第二介质颗粒尺寸小于所述第一介质颗粒 尺寸，干燥和烧结陶瓷颗粒。 如此获得的膜层用包含相对于第一介质粒度的间隔为-10- + 10％的第三种中等粒度的陶瓷颗粒的第二分散体进行表面处理，第四种中等粒度的陶瓷颗粒的尺寸小于第三种 中粒度。 膜层的表面处理是通过沿湍流沿着膜表面层的主流动方向通过第二分散体，同时在膜层上提供压差，干燥和烧结如此处理的膜。 修复陶瓷过滤膜的方法包括用包含第一中等粒度的陶瓷颗粒和小于第一中等粒度尺寸的第二中等粒度尺寸的陶瓷颗粒的分散体对膜进行表面处理的步骤，其中第一介质颗粒 尺寸大于待处理的膜的平均孔径，并且小于同一膜的最大孔径。 膜的表面处理通过在湍流中沿着膜表面沿主流动方向通过分散体，同时在膜上提供压力差，干燥和烧结如此处理的膜而发生。

    A METHOD OF PRODUCING A CERAMIC FILTER AND A CERAMIC FILTER MEMBRANE
    2.
    发明申请
    A METHOD OF PRODUCING A CERAMIC FILTER AND A CERAMIC FILTER MEMBRANE 审中-公开

    公开(公告)号：WO2021204337A1

    公开(公告)日：2021-10-14

    申请号：PCT/DK2021/050097

    申请日：2021-04-06

    申请人： LIQTECH INTERNATIONAL A/S

    发明人： CANDELARIO LEAL, Victor Manuel ,  KAISER, Nicolaj Nyboe ,  ZAHRTMANN, Nanette

    IPC分类号： B01D63/06 ,  B01D67/00 ,  B01D69/10 ,  B01D69/12

    摘要： Herein is described a method of producing a ceramic filter and a ceramic filter membrane. The method includes providing a porous ceramic structure comprising a porous ceramic structure front layer, providing a slurry comprising oxide and/or 5 hydroxide ceramic particles, coating the slurry of ceramic particles onto at least a first surface portion of the ceramic structure front layer without the slurry fully penetrates the porous ceramic structure, drying the coated ceramic structure and calcination the ceramic particles to form a membrane layer. The ceramic structure front layer comprises sintered non-oxide ceramic material. The ceramic filter is advantageously 10 the filter is a monolithic filter.