| 摘要 |
PCT No. PCT/US96/10679 Sec. 371 Date Feb. 2, 1998 Sec. 102(e) Date Feb. 2, 1998 PCT Filed Jun. 20, 1996 PCT Pub. No. WO97/05957 PCT Pub. Date Jul. 20, 1997Hydrocyclone cleaning systems and methods remove contaminants from a suspension of papermaking stock. A subsystem 10 employs forward cleaners for removing heavy contaminants while a subsystem 12 is fed directly from subsystem 10 and removes lightweight contaminants. The subsystem 12 also includes a through-flow cleaner which receives the rejects flow from a primary reverse flow cleaner and both systems are connected to a common surge tank arrangement. Both subsystems operate at low consistencies or high efficiency while the primary through-flow cleaner of subsystem 12 provides a system output having a consistency approximately twice as high as that of the input so that the overall operation operates both as a stock cleaner and a stock thickener.
|
