公开(公告)号：US6136202A

公开(公告)日：2000-10-24

申请号：US152767

申请日：1998-09-14

申请人： Michael R. Foreman

发明人： Michael R. Foreman

IPC分类号： B01D33/073 ,  B01D37/04 ,  B01D33/50

CPC分类号： B01D33/073 ,  B01D2201/0407

摘要： A system for filtering fluids uses the pressure differential across a filter element between an internal filter volume and an external filter volume to control the rate of fluid flow through the filter element. The internal filter volume communicates with a backwash volume contained in the external filter volume. The backwash volume may be movable relative to the filter element to clean accumulated filtrate from the filter element through backwashing. By increasing the pressure in the internal filter volume, the rate of backwashing can be increased while the rate of fluid flow into the internal filter volume is decreased. Particularly when the filter element becomes clogged, damage to a filter caused by an excessive pressure differential across the filter element may be decreased.

摘要翻译： 用于过滤流体的系统使用内部过滤器体积和外部过滤器体积之间的过滤器元件上的压力差来控制流过过滤元件的流体流速。 内部过滤器体积与包含在外部过滤器体积中的反洗液体积进行通信。 反洗容积可以相对于过滤元件移动，以通过反向洗涤从过滤元件清洗累积的滤液。 通过增加内部过滤器体积中的压力，可以提高反冲洗速率，同时流入内部过滤器体积的流体速率降低。 特别是当过滤元件堵塞时，由过滤元件过大的压差引起的过滤器损坏可能会降低。

公开(公告)号：US4874528A

公开(公告)日：1989-10-17

申请号：US220628

申请日：1988-07-18

申请人： Michael R. Foreman ,  Albert F. Hadermann ,  Jerry C. Trippe

发明人： Michael R. Foreman ,  Albert F. Hadermann ,  Jerry C. Trippe

IPC分类号： B01D17/04 ,  B01D17/05

CPC分类号： B01D17/047

摘要： Dispersions of oil and similar liquids in water are clarified with separation of the oil and water phases by mixing the dispersion with a polymer dissolved in an oil miscible solvent in a manner such that contact between the polymer solution and dispersed oil droplets is achieved. The polymer must be soluble in the oil and must have a molecular weight sufficiently high to impart viscoelasticity to the resulting solution of polymer in solvent and oil. Thereafter, the oil and water phases are readily separated by settling and decantation, or by enhanced phase separation techniques such as centrifugation.

摘要翻译： 通过将分散体与溶解在油混溶性溶剂中的聚合物混合，使聚合物溶液和分散的油滴之间的接触达到，使油和水相分散，分离出油相和水相。 聚合物必须溶于油中，并且必须具有足够高的分子量，以使聚合物在溶剂和油中的溶液具有粘弹性。 此后，油相和水相通过沉降和倾析容易地分离，或通过增强的相分离技术如离心分离。