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    • 44. 发明申请
    • FILTER MATTING FOR A REVERSIBLE-FLOW FILTER
    • 过滤器用于可逆流过滤器
    • WO1993006908A1
    • 1993-04-15
    • PCT/CH1992000198
    • 1992-10-01
    • ROSENMUND AGDILLIER, Gustav
    • ROSENMUND AG
    • B01D29/01
    • B07B1/4618B01D29/012B01D29/58B01D29/66B01D29/846B01D46/0067B01D46/0082B01D46/10B01D46/2411B01D46/4263B01D2275/10B03B4/00B07B1/4663
    • Described is filter matting (20) for reversible-flow filter, the matting having layers with decreasing mesh size disposed on a rigid base (21). The matting layers are joined to each other and to the base preferably by means of sintered joints and hence braced with respect to each other. Particularly preferred is the use of such filter matting in the operation of a pressure filter which can be fitted with equipment for automatically removing the filter cake. Because of the rigid nature of the filter matting, a reverse flow can be established using a liquid or gaseous flushing agent to detach the filter cake rapidly and completely, without the filter matting being distorted or torn open. Any residual layer of filter cake is removed by using a swirling flow. The use of heated gaseous flushing agent enables the filter cake residues to be dried more rapidly.
    • 描述了用于可逆流过滤器的过滤垫(20),具有设置在刚性基座(21)上的具有减小的网格尺寸的层的消光板。 消光层彼此连接并且优选地通过烧结接头连接到基部,并因此相对于彼此支撑。 特别优选的是在压滤机的操作中使用这种过滤垫,该过滤器可以装配用于自动除去滤饼的设备。 由于过滤垫的刚性,可以使用液体或气体冲洗剂建立反向流动,以快速和完全地分离滤饼,而不会使过滤垫失真或撕开。 通过使用旋流来除去任何残留的滤饼层。 使用加热的气体冲洗剂使得滤饼残留物更快地被干燥。
    • 45. 发明申请
    • FILTERING METHOD AND APPARATUS
    • 过滤方法和装置
    • WO1992008599A2
    • 1992-05-29
    • PCT/GB1991002028
    • 1991-11-18
    • PROCESS DEVELOPMENTS LTD.
    • PROCESS DEVELOPMENTS LTD.KALMAN, Peter, Gabor
    • B29C47/68
    • B29C47/681B01D29/09B01D29/52B01D29/606B01D29/608B01D29/668B01D29/846B01D35/12B29C47/0019B29C47/92B29C2947/926B29C2947/92961Y10T137/0391Y10T137/0402Y10T137/1797Y10T137/4643
    • Filtering apparatus includes two or more passages (2) acting in parallel, each having an extended filter (12) which passes through inlet and outlet ports (48, 49), preferably sealed by solidified plugs of the flowable substance such as a polymer being filtered. The flow of such substance to one passage can be terminated so as to permit filter advance under conditions of zero pressure drop, whilst flow through the other passage continues. Filter advance can be assisted by extrusion of a sealing plug in the outlet port under the pressure of such substance from the other passage which is still filtering. In an additional or alternative mode, flow into a passage is terminated and a secondary outlet (20, 21) in that passage is opened. This creates a counterflow under the pressure of substance from the other passage, which cleans the filter. The secondary outlet can be sealed by a plug which is extruded during counterflow. An alternative valve for the secondary outlet, which can also be used in a diverter valve for controlling the input of substance to the two passages, has a side passage (26) in which is formed a plug of solidified substance, and means (27) for pushing the plug into the flow substance.
    • 过滤装置包括两个或更多个平行作用的通道(2),每个通道(2)具有延伸的过滤器(12),该过滤器通过入口和出口(48,49),优选地通过可流动物质的固化塞(例如被过滤的聚合物)密封 。 这种物质流向一个通道可以被终止,以便允许过滤器在零压降的条件下前进,同时流过另一通道。 过滤器的前进可以通过在这种物质的压力下将密封塞挤压在出口端口,从另一个仍然过滤的通道来进行。 在附加或替代模式中,流入通道的流动终止,并且该通道中的二级出口(20,21)打开。 这在另一个通道的物质压力下产生逆流,从而清洁过滤器。 次级出口可以通过在逆流期间挤出的塞子来密封。 用于二次出口的替代阀,其也可用于控制物质输入到两个通道的分流阀,具有侧通道(26),其中形成有凝固物质的塞子,以及装置(27), 用于将塞子推入流动物质中。