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1. 发明授权

US6159373A Cleaning of hollow fibre membranes 失效
标题翻译：清洁中空纤维膜
公开(公告)号：US6159373A
公开(公告)日：2000-12-12
申请号：US809679
申请日：1997-08-08
申请人： Thomas William Beck , Humphrey John Jardine Drummond , Matthew Brian Lee , Clint Virgil Kopp , Warren Thomas Johnson
发明人： Thomas William Beck , Humphrey John Jardine Drummond , Matthew Brian Lee , Clint Virgil Kopp , Warren Thomas Johnson
IPC分类号： B01D29/11 , B01D61/18 , B01D61/20 , B01D61/22 , B01D63/02 , B01D65/00 , B01D65/02 , B01D65/08 , B01D61/00
CPC分类号： B01D65/02 , B01D29/115 , B01D2321/04 , B01D2321/185 , B01D2321/2066
摘要： A method and apparatus for recovering fine solids from a liquid feed suspension is disclosed. The apparatus has an operating cycle including a concentration part of the cycle in which solids present in the feed suspension are concentrated and a backwash part of the cycle in which supply of feed suspension to the concentrator is interrupted, the concentrator comprises a shell (11), and a plurality of elastic, hollow, microporous, polymer fibers (12) being fixed at their ends within the shell (11). Pressurized feed suspension is supplied to the outside of the fibers during said concentration part of the cycle and the filtrate may be withdrawn from the fiber lumens during the operating cycle. During the backwash cycle the concentration part of the cycle is terminated by ceasing supply of feed to said exterior surface of the fibers (12). The shell (11) is then sealed and the remaining filtrate removed from the lumens. A source of fluid under pressure is then applied to said lumens before, at the same time as, or just after opening the shell (11) to atmosphere, to cause explosive decompression through the walls of the fibers (12) whereby the fluid under pressure passes through said walls. The pressure level in said lumens is maintained at a predetermined value for a sufficient time following said decompression to cause substantial portions of solids lodged within and/or on the fiber walls to be dislodged. The dislodged contaminant matter is then washed away by the application of a flow of liquid over the surface of the fiber walls; and the concentration part of the operating cycle is recommended by introducing the supply of feed suspension to said exterior surface of said fibers (12).
摘要翻译： PCT No.PCT / AU95 / 00587 Sec。 371日期：1997年8月8日 102（e）日期1997年8月8日PCT提交1995年9月8日PCT公布。公开号WO96 / 07470 日期：1996年3月14日公开了一种从液体进料悬浮液中回收细小固体的方法和装置。该装置具有操作循环，其包括循环的浓度部分，其中进料悬浮液中存在的固体浓缩，并且在循环中的反冲洗部分，其中供给浓缩器的进料悬浮液被中断，所述浓缩器包括壳体（11），以及多个弹性中空微孔聚合物纤维（12），其端部固定在壳体（11）内。加压进料悬浮液在循环的所述浓缩部分期间供应到纤维的外部，并且在操作循环期间可以将滤液从纤维流体中排出。在回洗循环期间，循环的浓缩部分通过停止向纤维（12）的所述外表面的供给供给来终止。然后将壳体（11）密封，并将剩余的滤液从管腔中移出。然后在将壳体（11）打开到大气之前，同时或刚刚打开壳体（11）之后，将压力下的流体源施加到所述内腔，以通过纤维（12）的壁引起爆炸性减压，由此压力下的流体穿过所述墙壁。在所述减压之后，所述内腔中的压力水平保持在预定值足够的时间，以使得在纤维壁内和/或纤维壁上的大部分固体被移出。然后通过在纤维壁的表面上施加液体流将洗脱的污染物质洗掉; 并且通过将进料悬浮液的供应引入所述纤维（12）的所述外表面来推荐操作循环的浓度部分。

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