| 摘要 |
1,235,507. Regenerating anion exchange resins. ROHM & HAAS CO. 6 Sept., 1968 [20 Sept., 1967], No. 42617/68. Heading B1J. A bed of ion exchange resin material containing intermixed exhausted weak base resin and exhausted strong base resin, there being a difference in density between the two types of resin during or after regeneration, is regenerated and stratified by a process comprising regenerating the resins with regenerant liquid and expanding the bed whilst the resins are in contact with a liquid of density intermediate that of the two regenerated resins to permit the resins to stratify into upper and lower layers. |
