公开(公告)号：US3180825A

公开(公告)日：1965-04-27

申请号：US19770562

申请日：1962-05-25

Applicant: I A C INTERNAT ANALYZER COMPAN

Inventor： SILVERE COUVREUR ,  PAUL BALDWIN

IPC: B01D24/00 ,  B01J47/02 ,  C02F1/42 ,  C02F9/00 ,  C13B20/14

CPC classification number: C13B20/14 ,  B01D24/007 ,  B01D24/04 ,  B01D24/12 ,  B01D24/4631 ,  B01D24/4668 ,  B01D24/4884 ,  B01D2201/085 ,  B01J47/022 ,  C02F1/42 ,  C02F2303/16

Abstract: 1,013,069. Filters for liquids; ion-exchange. INTERNATIONAL ANALYZER S.A. April 26, 1962 [May 29, 1961], No. 16010/62. Headings B1D and B1J. During upflow of liquid to be filtered or treated, or of regenerating liquid, the free space 7, Fig. 1, above the bed 2, is eliminated by introduction of a fluid at 8, Fig. 2, to the region 5 between the outer cylindrical wall 1 and a resilient cylindrical wall 6, to prevent channelling of the bed. During upflow rinsing, the free space may be partially eliminated by the same means. A cylindrical resilient wall may be arranged within the bed along the axis to provide a central expandible region, Fig. 3 (not shown). The pervious wall 4 above the bed may be replaced by a layer of coarse granules of lower specific gravity than the bed, Fig. 5 (not shown).